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Liste des publications au format AERES

ACL - Articles dans des revues à comité de lecture

2016


  • Casado Ana, Peiry Jean-Luc et Campo Alicia M.« Geomorphic and vegetation changes in a meandering dryland river regulated by alarge dam, Sauce Grande River, Argentina », Geomorphology. DOI : 10.1016/j.geomorph.2016.05.036. https://hal.archives-ouvertes.fr/hal-01332432.
    Résumé : This paper investigates post-dam geomorphic and vegetation changes in the Sauce Grande River, a meandering dryland river impounded by a large water-conservation dam. As the dam impounds a river section with scarce influence of tributaries , sources for fresh water and sediment downstream are limited. Changes were inspected based on (i) analysis of historical photographs/imagery spanning pre-(1961) and post-dam (1981, 2004) channel conditions for two river segments located above and below the dam, and (ii) field survey of present channel conditions for a set of eight reference reaches along the river segments. Whilst the unregulated river exhibited active lateral migration with consequent adjustments of the channel shape and size, the river section below the dam was characterized by (i) marked planform stability (93 to 97%), and by (ii) vegetation encroachment leading to alternating yet localized contraction of the channel width (up to 30%). The present river displays a moribund, stable channel where (i) redistribution of sediment along the river course no longer occurs and (ii) channel forms constitute a remnant of a fluvial environment created before closing the dam, under conditions of higher energy. In addition to providing new information on the complex geomorphic response of dry-land rivers to impoundment, this paper represents the very first geomorphic assessment of the regulated Sauce Grande and therefore provides an important platform to underpin further research assessing the geomorphic state of this highly regulated dryland river.
    Mots-clés : Dryland rivers, flow regulation, Geomorphic changes, Paso de las Piedras Dam, Sauce Grande River, Vegetation changes.

  • Maleval Véronique, Destombes Pierre-Brieuc et Astrade Laurent« Diagnostic et propositions d'actions relatifs à l'érosion des berges du Léman sur la commune de Thonon-les-Bains (Haute-Savoie, France) », Physio-Géo - Géographie Physique et Environnement (www.physio-geo.fr), 10/2016, p. 20-43. (Physio Géo - Géographie Physique et Environnement). https://hal.archives-ouvertes.fr/hal-01313049.
    Mots-clés : erosion, Géomorphologie, geomorphology, Léman, Léman., protection, rate, rivage, sedimentation, shoreline, vitesse.


  • Poiraud Alexandre, Chevalier Mylène, Claeyssen Bertrand, Biron Pierre-Eymard et Joly Bertrand« From geoheritage inventory to territorial planning tool in the Vercors massif (French Alps): Contribution of statistical and expert cross approaches », Applied Geography, 71, p. 69-82. DOI : 10.1016/j.apgeog.2016.04.012. https://hal.archives-ouvertes.fr/hal-01310698.
    Résumé : Geoheritage is a concept derived from the geosciences, initially referring to the preservation of geoscientific objects. This concept is now used in local or regional development, especially for promoting a territory via the supply of geotouristic services for example. In this way, geoheritage covers the domains of geography, social sciences and strategy planning. In these types of project, geoheritage is considered as a natural resource, which implies a good knowledge of the location and characteristics of the resources concerned. For this purpose, we require an inventory. In this paper, we explore a methodology to draw up a geoinventory adapted to the territorial project of Vercors as well as an analytical approach mixing multivariate statistics and expert knowledge to produce an objective and suitable territorial diagnosis. The statistical approach is PCA-based whereas the heuristic approach combines a blind-test with two non-expert teams and a heuristic classification by two experts. This heuristic approach was based only on visualization of radar chart. Despite the inherent subjectivity of such a methodology, this statistical-expert cross approach provides a consensual classification of the 79 listed geosites and a deeper understanding of the major components making up the inventory. This classification forms the basis of a territorial analysis which proposes the creation of 5 thematic spaces (glacio-tectonic, peleogeomorphology, hydrogeology, morpho-tectonic and stratigraphy) across the whole massif as new territories for the development of geoeducation and geotourism. Finally, the territorial strategy considers the Vercors massif as an important dynamic outdoor museum dedicated to environmental education based on a major contribution arising from the analysis of geoheritage.
    Mots-clés : Expert analysis, French Alps, Geoheritage, Geotourism, Multivariate statistics, Territorial planning.


  • Roussel Erwan, Toumazet Jean-Pierre, Marren Philip M. et Cossart Etienne« Iceberg jam floods in Icelandic proglacial rivers: testing the self-organized criticality hypothesis », Géomorphologie : relief, processus, environnement, vol. 22 – 1/2016, p. 37-49. DOI : 10.4000/geomorphologie.11229. http://geomorphologie.revues.org/11229.


  • Roussel Erwan, Toumazet Jean-Pierre, Philip Marren et Cossart Etienne« Iceberg jam floods in Icelandic proglacial rivers: testing the self-organized criticality hypothesis », Geomorphologie -Paris-. DOI : 10.4000/geomorphologie.11229. https://hal.archives-ouvertes.fr/hal-01312715.
    Résumé : In this paper, we describe a fluvial marginal process associated with the formation of iceberg jams in Icelandic proglacial lakes. The floods triggered by the release of these iceberg jams have implications for the geomorphic evolution of the proglacial fluvial system. The process of iceberg jam floods share some conceptual characteristics with Self-Organized Criticality (SOC) approach of complex systems. Using a simple numerical model and field observations, we test the hypothesis that iceberg jam floods exhibit SOC. Field observations and aerial photo-interpretations in southeastern Iceland demonstrate the occurrence of icebergs jam in ice-contact lakes. The mapping of the south Vatnajökull margins between 2003 and 2012 reveals an increase of the calving potentiality and a rise in the likelihood of iceberg jam flood occurrence. Based on the results of the numerical model and field observations, we suggest that iceberg jam floods should be recognized as a SOC phenomenon. Analysis of the simulated time-series show that the iceberg jam floods become less frequent and more similar in magnitude over time. This global trend is related to the gradual enlargement of the lake outlet channel.
    Mots-clés : iceberg jam floods, Iceland, proglacial lakes, Proglacial rivers, self-organized criticality.
2015

  • Arthur Messerli et Larrue Sébastien« Effets de l’arbuste envahissant Rhododendron ponticum L. sur quelques espèces indigènes de l’île de Rùm (Ecosse du nord-ouest) », Revue d'Ecologie (La Terre et la Vie), 70 (Spécial Espèces Invasives), p. 68-79. https://hal.archives-ouvertes.fr/hal-01226313.
    Résumé : Introduit dans les îles britanniques en 1763 pour sa valeur ornementale, Rhododendron ponticum (L.) est aujourd’hui un arbuste naturalisé dans tout le Royaume-Uni. Cette espèce est considérée comme l’une des plus envahissantes de Grande-Bretagne. Cette étude tente in situ de mettre en évidence les effets de Rhododendron ponticum sur quelques espèces indigènes de l’île de Rùm (Nord-Ouest de l’Écosse, Grande Bretagne) où les gestionnaires se sont notamment engagés dans des programmes de reboisement en espèces ligneuses indigènes. Nous avons comparé la diversité végétale (i.e., la richesse spécifique, l’abondance, et les indices de diversité de Shannon, Simpson et d’équitabilité) dans (1) des placettes de 100 m² situées en landes envahies et non envahies par Rhododendron ponticum, et (2) des îlots de sous-bois formés par des individus d’Ilex aquifolium (indigène) versus Rhododendron ponticum (introduite). Les placettes envahies par Rhododendron ponticum présentent globalement des indices de Shannon, Simpson et une équitabilité plus faibles. Dans les îlots, on observe la même tendance, les indices de diversité sont plus faibles sous les îlots à Rhododendron ponticum que sous ceux à Ilex aquifolium. Ces résultats laissent à penser que Rhododendron ponticum perturbe l’établissement des espèces indigènes avec notamment une moindre abondance des ptéridophytes telles que Dryopteris dilatata et Dryopteris filix-mas. Par ailleurs, les îlots à Ilex aquifolium présentent une diminution significative dans l’abondance de Rhododendron ponticum en sous-bois. Ilex aquifolium devrait donc accompagner les programmes de reboisement en espèces indigènes afin de diminuer l’invasion de Rhododendron ponticum en sous-bois.


  • Barbier Nicolas« The controversial management of fire in the national forests of Idaho and western Montana », Journal of Alpine Research/Revue de Géographie Alpine. DOI : 10.4000/rga.2696. https://hal.archives-ouvertes.fr/hal-01224560.
    Résumé : In Idaho and Montana just like in the rest of the U.S. Rocky Mountains, a part of the population wants to settle near forests perceived as environmental amenities. The regional net migration has been positive for about twenty-five years. Wildfires with variable intensity regularly destroy properties. Some of them kill people. Regionally, they are an important human, economic, political and environmental issue. Their significance is likely to increase due to global warming. A lot of these fires are ignited within the huge national forests of the montane zone (600 to 2,100 meters of elevation in the study area) dominated by Ponderosa pines and Douglas firs. Between the end of the conquest of the West and the 1970s, land uses have altered these forests and the fire regimes that affect them. For about four decades, managers have been involved in a partial and controversial restoration of pre-conquest fire regimes and forests they used to shape.
    Mots-clés : Fire, Idaho, management, Montana, national forest.


  • Barbier Nicolas« La gestion controversée du feu dans les forêts nationales de l’Idaho et de l’ouest du Montana », Revue de Géographie Alpine. DOI : 10.4000/rga.2685. https://hal.archives-ouvertes.fr/hal-01225933.
    Résumé : En Idaho et au Montana comme dans le reste des Montagnes Rocheuses états-uniennes, une partie de la population souhaite s’installer à proximité immédiate des aménités paysagères forestières. Le solde migratoire régional est fortement positif depuis un quart de siècle. Des feux de végétation d’intensité variable y détruisent des propriétés à intervalles réguliers. Certains de ces feux sont meurtriers. Ils constituent un enjeu régional humain, économique, politique et environnemental dont la portée risque de s’accroître dans un contexte de réchauffement climatique. Bon nombre de ces feux démarrent dans les immenses forêts nationales de la zone montagnarde (600 à 2100 mètres d’altitude dans la région étudiée) dominée par des pins Ponderosa et par des sapins Douglas. Entre la fin de la conquête de l’Ouest et les années 1970, les impacts anthropogéniques ont fait évoluer ces forêts et les régimes de feu auxquels elles sont soumises. Depuis une quarantaine d’années, les gestionnaires ont amorcé une restauration partielle et controversée des régimes de feu d’autrefois et des espaces qu’ils contribuent à façonner.
    Mots-clés : feu de végétation, forêt nationale, gestion, Idaho, Montana.


  • Bartout Pascal, Touchart Laurent, Terasmaa Jaanus, Choffel Quentin, Marzecova Agata, Koff Tiiu, Kapanen Galina, Qsair Zoubida, Maleval Véronique, Millot Camille, Saudubray Julien et Aldomany Mohammad« A new approach to inventorying bodies of water, from local to global scale », Die Erde, 146 (4), p. 245-258. DOI : 10.12854/erde-146-. https://hal.archives-ouvertes.fr/hal-01254299.
    Mots-clés : bodies of water, Inventory, lake, pond, scale.


  • Beauger Aude, Delcoigne Arnaud, Voldoire Olivier, Serieyssol Karen K. et Peiry Jean-Luc« Distribution of diatom, macrophyte and benthic macroinvertebrate communities related to spatial and environmental characteristics: the example of a cut-off meander of the River Allier (France) », Cryptogamie, Algologie, 36 (3), p. 1-33. DOI : 10.7872/crya/v36.iss3.2015.1. https://hal.archives-ouvertes.fr/hal-01170337.
    Résumé : Currently, a consensus has been reached to protect and restore cut-off meanders. Therefore, it is important to understand how these wetlands function. To our knowledge, the spatial and temporal distribution of both benthic diatoms and macroinvertebrates, associated with macrophytes communities, linked to the geomorphology, has not been studied extensively. In the upstream and intermediate zones, the low water temperature and the high conductivity revealed a connection with the groundwater. Moreover, the geomorphological riffle characterizing the intermediate zone created the same downwelling and upwelling processes as in running water, with a groundwater/hyporheic/surface water ecotone and produced physico-chemical differences between the upstream and the downstream zones and thereby modify the diatom, macroinvertebrate and macrophyte distribution. Downstream, water input from the main channel of the Allier River allowed the development of taxa observed in the River. All these hydrological connections and the sedimentation modified the physical, chemical and geomorphological characteristics, thereby, creating a gradient of water quality, influencing the distribution of the biotic communities.
    Mots-clés : /, cut-off, diatoms, geomorphology, Macroinvertebrates, macrophytes, meander, water.

  • Bernardie-Tahir Nathalie et Schmoll Camille« Iles, frontières et migrations méditerranéennes : Lampedusa et les autres », L’Espace Politique, 25. http://espacepolitique.revues.org/3333.


  • Bosi Giovanna, Benatti Alessandra, Rinaldi Rossella, Dallai Daniele, Santini Claudio, Carbognani Michele, Tomaselli Marcello et Bandini Mazzanti Marta« The memory of water: archaeobotanical evidence of wetland plants from Modena (Emilia-Romagna, northern Italy) and palaeoecological remarks », Plant Biosystems, 149 (1), p. 144-153. DOI : 10.1080/11263504.2014.998310. https://hal-unilim.archives-ouvertes.fr/hal-01126716.
    Résumé : Modena, founded by the Romans (183 BC), has always been conditioned by water in all its urban history. In the city, numerous archaeobotanical investigations have been carried out in order to reconstruct the natural landscape and human– environment interactions over time. During these investigations, four archaeological sites (two Roman and two medieval) have revealed deposits with a marked character of palaeobiocoenosis, largely resulting from the natural environment surrounding the sites, due to natural “seed rain”. These deposits are characterized by widespread evidence of plants related to water, constituting a valuable archive to investigate habitats which currently have become very rare and threatened, if they have not completely disappeared. The present paper aims to reveal the peculiarities of the Roman/medieval archaeocarpological floristic lists (through a comparison with the flora over the last two centuries in the area of Modena) and highlight the possible causes explaining the presence or the demise of several taxa, considering also the palaeoecological reconstruction of the environment in which they have been found.
    Mots-clés : Archaeobotany/ecology, Roman/medieval/recent, seeds/fruits, wetland.


  • Casteller Alejandro, Stoffel Markus, Crespo Sebastian, Villalba Ricardo, Corona Christophe et Bianchi Emilio« Flash floods in the Patagonian Andes: A dendrogeomorphological approach. », Geomorphology, 228, p. 116-123. DOI : 10.1016/j.geomorph.2014.08.022. https://hal.archives-ouvertes.fr/hal-01131643.
    Résumé : Flash floods represent a significant natural hazard in small mountainous catchments of the Patagonian Andes and have repeatedly caused loss to life and infrastructure. At the same time, however, documentary records of past events remain fairly scarce and highly fragmentary in most cases. In this study, we therefore reconstruct the spatiotemporal patterns of past flash flood activity along the Los Cipreses torrent (Neuquén, Argentina) using dendrogeomorphic methods. Based on samples from Austrocedrus chilensis, Pseudotsuga menziesii, and Nothofagus dombeyi, we document 21 flash flood events covering the period A.D. 1890–2009 and reconstruct mean recurrence intervals of events at the level of individual trees being impacted, which varies from 4 to 93 years. Results show that trees tend to be older (younger) in sectors of the torrent with gentler (steeper) slope gradients. Potential triggers of flash floods were analyzed using daily temperature and precipitation data from a nearby weather station. Weather conditions leading to flash floods are abundant precipitations during one to three consecutive days, combined with temperatures above the rain/snow threshold (2 °C) in the whole watershed.
    Mots-clés : Austrocedrus chilensis, Dendrogeomorphology, Nothofagus dombeyi, Patagonian Andes, Pseudotsuga menziesii.


  • Corenblit Dov, Baas Andreas, Balke Thorsten, Bouma Tjeerd, Fromard François, Garófano-Gómez Virginia, González Eduardo, Gurnell Angela M., Hortobágyi Borbála, Julien Frédéric, Kim Daehyun, Lambs Luc, Stallins J. Anthony, Steiger Johannes, Tabacchi Eric et Walcker Romain« Engineer pioneer plants respond to and affect geomorphic constraints similarly along water-terrestrial interfaces world-wide », Global Ecology and Biogeography, 24 (12), p. 1363–1376. DOI : 10.1111/geb.12373. https://hal.archives-ouvertes.fr/hal-01229045.
    Résumé : AIM Within fluvial and coastal ecosystems world-wide, flows of water, wind and sediment generate a shifting landscape mosaic composed of bare substrate and pioneer and mature vegetation successional stages. Pioneer plant species that colonize these ecosystems at the land–water interface have developed specific traits in response to environmental constraints (response traits) and are able to modify habitat conditions by modulating geomorphic processes (effect traits). Changes in the geomorphic environment under the control of engineer plants often feed back to organism traits (feedback traits), and thereby ecosystem functioning, leading to eco-evolutionary dynamics. Here we explain the joint foundations of fluvial and coastal ecosystems according to feedback between plants and the geomorphic environment. LOCATION Dynamic fluvial and coastal ecosystems world-wide. METHOD Drawing from a pre-existing model of ‘fluvial biogeomorphic succession’, we propose a conceptual framework showing that fluvial and coastal ‘biogeomorphic ecosystems’ are functionally similar due to eco-evolutionary feedbacks between plants and geomorphology. RESULTS The relationships between plant traits and their geomorphic environments within different fluvial and coastal biogeomorphic ecosystems are identified and classified within a framework of biogeomorphic functional similarity according to three criteria: (1) pioneer plants develop specific responses to the geomorphic environment; (2) engineer plants modulate the geomorphic environment; (3) geomorphic changes under biotic control within biogeomorphic ecosystems feed back to organisms. MAIN CONCLUSIONS The conceptual framework of functional similarity proposed here will improve our capacity to analyse, compare, manage and restore fluvial and coastal biogeomorphic ecosystems world-wide by using the same protocols based on the three criteria and four phases of the biogeomorphic succession model.
    Mots-clés : biogeomorphic ecosystem, biogeomorphic succession, coastal dune, eco-evolutionary dynamics, ecosystem engineer, mangrove, niche construction, plant trait, river, salt marsh.


  • Corenblit Dov, Davies Neil S., Steiger Johannes, Gibling Martin R. et Bornette Gudrun« Considering river structure and stability in the light of evolution: feedbacks between riparian vegetation and hydrogeomorphology », Earth Surface Processes and Landforms, 40 (2), p. 189-207. DOI : 10.1002/esp.3643. http://onlinelibrary.wiley.com/doi/10.1002/esp.3643/abstract.
    Résumé : River ecological functioning can be conceptualized according to a four-dimensional framework, based on the responses of aquatic and riparian communities to hydrogeomorphic constraints along the longitudinal, transverse, vertical and temporal dimensions of rivers. Contemporary riparian vegetation responds to river dynamics at ecological timescales, but riparian vegetation, in one form or another, has existed on Earth since at least the Middle Ordovician (c. 450 Ma) and has been a significant controlling factor on river geomorphology since the Late Silurian (c. 420 Ma). On such evolutionary timescales, plant adaptations to the fluvial environment and the subsequent effects of these adaptations on fluvial sediment and landform dynamics resulted in the emergence, from the Silurian to the Carboniferous, of a variety of contrasted fluvial biogeomorphic types where water flow, morphodynamics and vegetation interacted to different degrees. Here we identify several of these types and describe the consequences for biogeomorphic structure and stability (i.e. resistance and resilience), along the four river dimensions, of feedbacks between riparian plants and hydrogeomorphic processes on contrasting ecological and evolutionary timescales. This article is protected by copyright. All rights reserved.
    Mots-clés : ecosystem engineer, ecosystem resistance and resilience, fluvial biogeomorphic succession, functional effect and response traits, niche construction, riparian vegetation, scale-dependant feedback, vegetation evolution.


  • Corona Christophe, Saez Jérôme Lopez, Stoffel Markus, Rovéra Georges, Edouard Jean-Louis et Guibal Frédéric« Impacts of more frequent droughts on a relict low-altitude Pinus uncinata stand in the French Alps », Frontiers in Ecology and Evolution, 2 (82), p. 10.3389/fevo.2014.00082. DOI : 10.3389/fevo.2014.00082. https://hal.archives-ouvertes.fr/hal-01131635.
    Résumé : Cold microclimatic conditions provide exceptional microhabitats to Pinus uncinata stands occurring at abnormally low altitudes in seven relict stands of the northern French Alps. Here, P. uncinata is located at the lower bounds of its ecological limits and therefore expected to provide a sensitive indicator of climate change processes. We used dendrochronological analysis to study the growth patterns of closely spaced chronologies across an elevational transect and compare a relict low-altitude to a P. uncinata stand located at the alpine treeline. Two detrending procedures are used to reveal high- and low-frequencies embedded in annually resolved ring-width series. Growth response of P. uncinata to instrumental temperature and precipitation data is investigated by means of moving response function analyses. Results show an increase in the sensitivity of tree-ring widths to drought during previous summer in both stands. At the treeline stand, an increasing response to fall temperature is observed whereby fall temperature and radial tree growth increased in two synchronous steps around ~1930 and from ~1980-present. At the low-altitude stand, P. uncinata appears more drought sensitive and exhibits a sharp growth decline since the mid-1980s, coinciding with increasing summer temperatures. Growth divergence between the two stands can be observed since the mid-1980s. We argue that the positive growth trend at the high-altitude stand is due to increasing fall temperatures which would favor the formation of metabolic reserves in conjunction with atmospheric CO2 enrichment that in turn would facilitate improved water use efficiency. At the relict low-altitude stand, in contrast, it seems that improved water use efficiency cannot compensate for the increase in summer temperatures.
    Mots-clés : climate change, dendroclimatology, elict pine stand, French Alps, response functions, tree-growth decline.

  • Delay Etienne et Chevallier Marius« Roger Dion, Toujours vivant! », Cybergeo : Revue européenne de géographie / European journal of geography. https://halshs.archives-ouvertes.fr/halshs-00933549.
    Résumé : Cet article explore au moyen d'un modèle en système multi­agent (SMA) les conditions d'émergence et de structuration historique des territoires de production des vins de qualité décrits dans l'œuvre de Roger Dion, et plus particulièrement dans son article intitulé "Querelles des anciens et des modernes sur les facteurs de la qualité du vin" de 1952 (Dion, 1952).
    Mots-clés : géographie sociale, Netlogo, Roger Dion, systèmes multi-agents.


  • Delay Etienne, Chevallier Marius, Rouvellac Éric et Zottele Fabio« Effects of the Wine Cooperative System on Socio-economic Factors and Landscapes in Mountain Areas », Journal of Alpine Research/Revue de Géographie Alpine, p. http://rga.revues.org/2733. DOI : 10.4000/rga.2733. https://halshs.archives-ouvertes.fr/halshs-01225874.
    Résumé : In an economy of increased globalization and trade, wine holds a privileged place. The wine cooperative system in vineyards in mountain regions, such as in Banyuls-sur-Mer, France and the Val di Cembra, Italy, offers a privileged context for studying the opportunities for individual action that affect precarious socio-economic balances. To understand, and sometimes predict, changes in the socio-economics and landscapes of a region due to cooperatives, we have used a multi-agent system (MAS) to model the behavior of the actors involved in wine production in a cooperative. This model analyses cooperative systems’ impact on socio-economic factors (income inequality and the rate of business failure) and landscapes (percentage of total land as vineyards, particularly in steep areas) of the regions considered. The findings show that cooperatives play a role of socio-economic and landscape stabilizer in these regions.
    Mots-clés : agent-based modeling, cooperation, modelisation, slope, vineyard landscape, viticulture, wine cooperative.
  • Didolot F.« Structure de la propriété forestière privée en 2012 », Forêt Entreprise, 222, p. 25-29.
  • Didolot F.« Le risque en forêt. Quels risques, quels comportements ? », Forêt Entreprise, 222, p. 21-24.
  • Didolot F. et Giry C.« Motivations et pratiques des propriétaires forestiers : des changements qui intéressent les européens », 222, p. 44-46.
  • Didolot F. et Picard O.« Pourquoi analyser le comportement des forestiers ? », Forêt Entreprise, 222, p. 18-20.

  • Garnier Edwige et Serre Frédéric« Patrimoine, identité et développement territorial », éd. par Editions La Librairie des territoires. https://halshs.archives-ouvertes.fr/halshs-01195724.
    Résumé : Et si l’on considérait que le patrimoine constituait un élément moteur d’identité et de développement territorial ? Dans une période de remise à plat des politiques publiques sur les territoires, et alors que ceux-ci sont à la recherche d’un projet collectif, il convenait de s’interroger sur la place du patrimoine dans la mobilisation des acteurs locaux et dans la recherche des retombées sociales et économiques. L’ouvrage « Patrimoine, identité et développement territorial » associe concepts, méthodes et récits d’expériences, il permet ainsi à tous ceux qui sont impliqués dans le devenir des territoires de trouver matière à enrichir leurs pratiques, à découvrir comment des éléments patrimoniaux peuvent devenir une richesse pour l’avenir de ces espaces de vie. Coordonné par Edwige Garnier et Frédéric Serre, ce livre a mobilisé un collectif de chercheurs de l’Université de Limoges, de l’EPL d’Ahun et de professionnels du développement territorial. Il s’appuie sur une formation universitaire, dont le montage original repose sur le soutien sans faille de collectivités territoriales, notamment creusoises.
    Mots-clés : développement, identité, patrimoine, projet de territoire, territoire.

  • Garófano-Gómez Virginia, Corenblit Dov Jean-François, Steiger Johannes, Moulia Bruno B., Ploquin Stéphane, Chaleil Patrice, Forestier Olivier, Evette André, Hortobágyi Borbála et Lambs Luc« Response of black poplar (Populus nigra L.) to hydrogeomorphological constraints: a semi-controlled ex situ experiment ». https://hal.archives-ouvertes.fr/hal-01121218.
    Mots-clés : Mechanical constraints, Populus nigra L, positive niche construction, response traits, sediment burial.

  • Guyot Sylvain, Dellier Julien et Antony Caillot« Our rural sense of place’: Rurality and Strategies of Self-Segregation in the Cape Peninsula (South Africa) », JSSJ Justice Spatiale / Spatial Justice, 7. https://hal.archives-ouvertes.fr/hal-01118881.
    Mots-clés : Cape Peninsula, Cape Town, rurality, self-segregation, sense of place, South Africa.

  • Hamidou Bello, Couratier Philippe, Nicol Marie, Delzor Aurélie, Boumédiène Farid, Preux Pierre-Marie et Marin Benoît« Incidence de la sclérose latérale amyotrophique en limousin (2000–2011) : résultats du premier registre français des cas de SLA (registre FRALIM) », Revue Neurologique, 11. DOI : 10.1016/j.neurol.2015.01.190.


  • Larrue Sébastien, Butaud J.-F., Dumas P. et Ballet S.« Native plant species richness on Eastern Polynesias remote atolls: Which abiotic factors influence its spatial pattern? », Progress in Physical Geography, p. 1–23. DOI : 10.1177/0309133315615804. https://hal.archives-ouvertes.fr/hal-01260842.
    Résumé : Which abiotic factors influence the number of native plant species on remote atolls is an important question to understand better the spatial pattern of the species observed on these low and vulnerable coral islands. However, this issue is still very poorly documented, often due to human degradation, partial botanical surveys or the difficult geographic access of remote atolls for researchers. The remote atolls of Eastern Polynesia, which are among the most isolated in the world, are of great interest for studies of native species’ distribution due to their isolation, low human density and urbanisation. In this study, we selected 49 remote atolls of Eastern Polynesia with complete botanical surveys to test the relative influence of eight abiotic factors on native plant species richness (i.e. indigenous and endemic species). Abiotic factors used as potential predictors included atoll area (km2), shoreline length (km), atoll elevation (m) and index of isolation (UNEP), but also the coastal index of the atoll (Ic ), the distance to the nearest similar atoll (km), the distance to the nearest large volcanic island ≥ 1000 km2 (here, Tahiti as a potential stepping-stone island) and the distance to the nearest raised atoll ≥ 15 m a.s.l. (here, Makatea or Henderson as a potential refugium during sea-level highstands). Spearman’s rank correlation, linear regression analysis and frequency diagrams were used to assess the relative influence of these factors on native species richness. No relationship was found between the species richness and the index of isolation or the distance to the nearest similar atoll. Atoll area and distance to the nearest raised atoll of Makatea explained 47.1% and 40%, respectively, of the native species richness variation observed on the remote atolls. The distance to the volcanic island of Tahiti and the coastal index explained 36.9% and 27.3% of the variation, while elevation and shoreline length explained 23.3% and 18.4% of the variation, respectively. Native species richness on the atolls surveyed increased with the increasing atoll area, elevation and shoreline length, but decreased with the increasing distance to the nearest raised atoll of Makatea and the large volcanic island of Tahiti. This supports the view that the spatial pattern of native species richness observed on the remote atolls was strongly influenced by (i) atoll area but also by (ii) the distance to the raised atoll of Makatea, and (iii) the distance to the volcanic island of Tahiti. This finding suggests that the raised atoll may be viewed as a refugium during sea-level highstands while the large volcanic island played the role of stepping-stone island, both islands influencing the dispersal of native species on remote atolls and attenuating the isolation effect in the study area.
    Mots-clés : eastern Polynesia, island biogeography, physical and spatial factors, raised atoll, refugium, remote atolls, species richness, stepping-stone-island.

  • Ledger Paul, Miras Yannick, Poux Matthieu et Milcent Pierre-Yves« The palaeoenvironmental impact of prehistoric settlement and Protohistoric urbanism: tracing the emergence of the Oppidum of Corent, Auvergne, France », PLoS ONE, 10 (4), p. 1-25. DOI : 10.1371/journal.pone.0121517.
    Résumé : Early human societies and their interactions with the natural world have been extensively explored in palaeoenvironmental studies across Central and Western Europe. Yet, despite an extensive body of scholarship, there is little consideration of the environmental impacts of proto-historic urbanisation. Typically palaeoenvironmental studies of Bronze and Iron Age societies discuss human impact in terms of woodland clearance, landscape openness and evidence for agriculture. Although these features are clearly key indicators of human settlement, and characterise Neolithic and early to Middle Bronze Age impacts at Corent, they do not appear to represent defining features of a protohistoric urban environment. The Late Iron Age Gallic Oppidum of Corent is remarkable for the paucity of evidence for agriculture and strong representation of apophytes associated with disturbance. Increased floristic diversity – a phenomenon also observed in more recent urban environments – was also noted. The same, although somewhat more pronounced, patterns are noted for the Late Bronze Age and hint at the possibility of a nascent urban area. High percentages of pollen from non-native trees such as Platanus, Castanea and Juglans in the late Bronze Age and Gallic period also suggest trade and cultural exchange, notably with the Mediterranean world. Indeed, these findings question the validity of applying Castanea and Juglans as absolute chronological markers of Romanisation. These results clearly indicate the value of local-scale palaeoecological studies and their potential for tracing the phases in the emergence of a proto-historic urban environment.

  • Metzger Alexis« The Dutch Winter landscapes climatic temporalities », Nouvelles Perspectives en Sciences Sociales, 10 (2), p. 12. (Représenter les temporalités). https://hal.archives-ouvertes.fr/hal-01129027.
    Mots-clés : climatologie historique, Dutch Painting, Golden Age, historical climatology, hiver, Little Ice Age, peinture hollandaise, petit âge glaciaire, représentations, Siècle d’or, Winter.


  • Miras Yannick, Beauger Aude, Lavrieux Marlène, Berthon Vincent, Andrieu-Ponel Valérie et Ledger Paul« Tracking long-term human impacts on landscape, vegetal biodiversity and water quality in the Lake Aydat catchment (Auvergne, France) using pollen, non-pollen palynomorphs and diatom assemblages », Palaeogeography, Palaeoclimatology, Palaeoecology, 424, p. 76-90. DOI : 10.1016/j.palaeo.2015.02.016. https://hal.archives-ouvertes.fr/hal-01120579.
    Résumé : Palaeoenvironmental studies allow the assessment of long-term human–climate–environmental interactions, and furnish valuable tools for the sustainable management of lacustrine ecosystems. A good example is the multi-proxy study of Lake Aydat's 19 m sedimentary core. Previous research revealed the role of climate and human activities on lake sedimentation, and identified two sedimentary units (6700 ± 200 to 3180 ± 90 and 1770 ± 60 cal. yr BP to present) separated by an erosive mass-wasting deposit (Lavrieux et al., 2013a). Pollen, non-pollen palynomorphs (e.g. fungal and algal spores, rotifer resting eggs), and diatom-based trophic reconstructions have been used to track the impacts of past land use on landscape evolution, vegetal biodiversity and water quality. Palaeoenvironmental data were also compared with local archaeo-historical datasets which allowed refined landscape reconstructions, especially for late Antiquity. The results obtained demonstrate that even Neolithic and Bronze Age human activities (between ca. 4600 and 4300 cal. yr BP and between ca. 3900 and 3500 cal. yr BP) had a discernible influence on catchment vegetation and lacustrine trophic dynamics of Lake Aydat, underlining the vulnerability of the ecosystem. Recurrent and complex models of past vegetation changes, phases of water nutrient over-enrichment and lake resilience were identified and related to grazing activities, but also to land use practises, which have been overlooked in Auvergne, such as mountain agriculture and hemp retting.
    Mots-clés : Anabaena, Diatom-inferred trophic level, EUTROPHICATION, HUMAN IMPACT, Lake water quality, pollen, Rotifer resting eggs.


  • Miras Yannick, Ejarque Ana, Riera Mora Santiago, H. Orengo Hector et Maria Palet Martinez Josep« 28. Andorran high Pyrenees (Perafita Valley, Andorra): Serra Mijtana fen », Grana, 54 (4), p. 313-316. DOI : 10.1080/00173134.2015.1087590. https://hal.archives-ouvertes.fr/hal-01226217.


  • Morel Pauline, Trappmann Daniel, Corona Christophe et Stoffel Markus« Defining sample size and sampling strategy for dendrogeomorphic rockfall reconstructions », Geomorphology, p. doi:10.1016/j.geomorph.2015.02.017. DOI : 10.1016/j.geomorph.2015.02.017. https://hal.archives-ouvertes.fr/hal-01131632.
    Résumé : Optimized sampling strategies have been recently proposed for dendrogeomorphic reconstructions of mass movements with a large spatial footprint, such as landslides, snow avalanches, and debris flows. Such guidelines have, by contrast, been largely missing for rockfalls and cannot be transposed owing to the sporadic nature of this process and the occurrence of individual rocks and boulders. Based on a data set of 314 European larch (Larix decidua Mill.) trees (i.e., 64 trees/ha), growing on an active rockfall slope, this study bridges this gap and proposes an optimized sampling strategy for the spatial and temporal reconstruction of rockfall activity. Using random extractions of trees, iterative mapping, and a stratified sampling strategy based on an arbitrary selection of trees, we investigate subsets of the full tree-ring data set to define optimal sample size and sampling design for the development of frequency maps of rockfall activity. Spatially, our results demonstrate that the sampling of only 6 representative trees per ha can be sufficient to yield a reasonable mapping of the spatial distribution of rockfall frequencies on a slope, especially if the oldest and most heavily affected individuals are included in the analysis. At the same time, however, sampling such a low number of trees risks causing significant errors especially if nonrepresentative trees are chosen for analysis. An increased number of samples therefore improves the quality of the frequency maps in this case. Temporally, we demonstrate that at least 40 trees/ha are needed to obtain reliable rockfall chronologies. These results will facilitate the design of future studies, decrease the cost–benefit ratio of dendrogeomorphic studies and thus will permit production of reliable reconstructions with reasonable temporal efforts.
    Mots-clés : Dendrogeomorphology, frequency, mass movement, Methodology, Rockfall, simulation.


  • Pouteau Robin, Meyer Jean Yves et Larrue Sébastien« Using range filling rather than prevalence of invasive plant species for management prioritisation: the case of Spathodea campanulata in the Society Islands (South Pacific) », Ecological Indicators, 54, p. 87-95. DOI : 10.1016/j.ecolind.2015.02.017. https://hal.archives-ouvertes.fr/hal-01126620.
    Résumé : Biological invasion science lacks standardised measures of invasion success that would provide effective prioritisation of invasive species and invaded areas management. Area of occupancy of invasive species is often used as proxy of their success but this metric ignores the extent to which a species fills its potential distribution. This study aims to estimate the performance of invasive tree species by computing the ratio between the compressed canopy area (CCA), assessed through remote sensing, and their potential distribution, estimated using invasive species distribution modelling. This index of ‘range filling’ (RF) has applicability to a broad set of invasive plant species in any biome. A case study is provided using the invasive African tulip tree Spathodea campanulata (Bignoniaceae) on three small tropical oceanic islands of French Polynesia (South Pacific Ocean) exhibiting different invasion levels to test for differences between CCA and RF. The results show that the RF of Spathodea campanulata varied within islands depending on elevation but not proportionally to the CCA of the species. Another key result was that the RF of the species and its CCA provided different between-island perspectives on the invasions and leaded to distinct ranking among islands to prioritise for management. Therefore, managers should disregard species’ area of occupancy as a measure of success and rather weight it with potential distribution to quantify how an invader is performing in a given environment.
    Mots-clés : Geographic information system, island ecology, management prioritisation, niche modelling, support vector machines.

  • Ransan-Cooper Hedda, Farbotko Carol, McNamara Karen E., Thornton Fanny et Chevalier Emilie« Being (s) framed: The means and ends of framing environmental migrants », Global Environmental Change, 35, p. 106–115. http://www.sciencedirect.com/science/article/pii/S0959378015300194.


  • Rouvellac Éric« La construction des appellations viticoles et la géographie juridique », Développement durable et territoires, 6 (1). DOI : 10.4000/developpementdurable.10811. http://developpementdurable.revues.org/10811.

  • Zottele Fabio et Delay Etienne« È possibile descrivere la resistenza dei paesaggi vitati di montagna utilizzando un territorio virtuale? Il caso trentino. », Territoires du vin, 6, p. 1-16. (Territori del vino in Italia). https://halshs.archives-ouvertes.fr/halshs-01138934.
    Résumé : Il paesaggio è la percezione che l’uomo ha dell’ambiente che lo circonda e del risultato dei processi dinamici nel tempo e nello spazio che agiscono su un territorio. Nell’ultimo secolo i paesaggi agricoli hanno subìto cambiamenti radicali in risposta a forti trasformazioni sociali e importanti innovazioni tecnologiche. Queste ultime, in generale, hanno reso possibile lo sfruttamento di maggiori superfici agrarie con minori costi di manodopera. La meccanizzazione di alcune pratiche agronomiche è una spinta innovativa che ha agito in maniera disomogenea: nelle zone di montagna e/o in quelle in forte pendenza persiste un’agri- coltura composta da piccoli appezzamenti, spesso terrazzati, dove la meccanizzazione risulta difficile o impossibile. Tuttavia, nonostante le difficoltà gestionali legate alla conformazione orografica, questi paesaggi si sono mantenuti nel tempo conservando una forte e peculiare identità territoriale. In Trentino (IT) coesistono in equilibrio dinamico due tipologie di paesaggio vitato: il fondovalle è meccanizzato e gli appezzamenti hanno estensione maggiore, sui versanti a forte pendenza si sviluppa una viticoltura di montagna terrazzata, di piccola taglia ed a bassissima meccanizzazione. In questo lavoro si ipotizza che l’emergenza dei due differenti contesti viticoli - di forte pendenza e di fondovalle - scaturisca dalla complessità dei processi che sottendono lo sviluppo di un territorio, che i differenti fattori in gioco debbano essere studiati nella loro diversità intrinseca e che nessuno di questi singoli fattori possa essere considerato come la causa principale. Basandosi su ipotesi semplici di strutturazione del paesaggio è stato sviluppato un modello parsimonioso basato su un sistema multiagente per la simulazione di queste dinamiche. I risultati ottenuti sono stati messi a confronto con l’evoluzione storica del paesaggio documentata in alcuni archivi storici e con lo stato attuale del territorio. L’obiettivo è determinare la plausibilità di un modello semplificato che possa descrivere sia le forzanti socio-economiche complesse sia l’evoluzione del paesaggio verso le configurazioni attuali. Si mostreranno, infine, le rappresentazioni preliminari del modello sviluppato per descrivere le dinamiche di evoluzione del paesaggio viticolo trentino sottoposto a queste forzanti.
    Mots-clés : Agent Based Model, Alpes, Landscape, Moutains, paesaggio, viticulture.
2014

  • André Marie-Françoise, Vautier Franck, Voldoire Olivier et Roussel Erwan« Accelerated stone deterioration induced by forest clearance around the Angkor temples », Science of the Total Environment, 493, p. 98-108. https://hal.archives-ouvertes.fr/hal-01115192.
    Mots-clés : cultural heritage, geomorphology and weathering.


  • Aubry Thierry, Dimuccio Luca Antonio, Buylaert Jan-Pieter, Liard Morgane, Murray Andrew S., Thomsen Kristina Jørkov et Walter Bertrand« Middle-to-Upper Palaeolithic site formation processes at the Bordes-Fitte rockshelter (Central France) », Journal of Archaeological Science, 52, p. 436-457. DOI : 10.1016/j.jas.2014.09.013. http://search.ebscohost.com/login.aspx?direct=true&db=edselp&AN=S0305440314003483&lang=fr&site=eds-live.
    Résumé : Transformation in technological patterns associated with the Middle-to-Upper Palaeolithic transition between 50 and 40 ka in Western Europe and their relationship with the Neanderthal and Anatomically Modern Human populations and behaviors are issues that continue to stimulate heated debate. In this article we use the Middle and Early Upper Palaeolithic archaeo-stratigraphic record from the Bordes-Fitte rockshelter (les Roches d'Abilly site, Central France), a Bayesian analysis of the ages obtained by accelerator mass spectrometry radiocarbon on ultrafiltered collagen and by luminescence on quartz and feldspar grains, to establish a timeline for material culture and sedimentary dynamic changes during the Middle-to-Upper Palaeolithic transition. Technology, refitting studies and taphonomy of lithic artifacts recovered in the geoarchaeological field units D1 and D2 permit to characterize 3 reduction strategies (Levallois, Discoidal and Châtelperronian blade) that took place between the cold Heinrich events 5 and 4. We discuss the implications of the results to characterize the end of the Middle Palaeolithic, and for distinguishing anthropogenic and non-anthropogenic factors in Middle-to-Upper Palaeolithic assemblage's variability.
    Note Note
    <p>Accession Number: S0305440314003483; Author: Aubry, Thierry (a, ∗); Author: Dimuccio, Luca Antonio (b, c); Author: Buylaert, Jan-Pieter (d, e); Author: Liard, Morgane (f); Author: Murray, Andrew S. (e); Author: Thomsen, Kristina Jørkov (d); Author: Walter, Bertrand (g); Affiliation: Fundação Côa Parque, Rua do Museu, 5150-610 Vila Nova de Foz Côa, Portugal; Affiliation: CEGOT – Centro de Estudos em Geografia e Ordenamento do Território, Departamento de Geografia, Faculdade de Letras, Universidade de Coimbra, Praça da Porta Férrea, 3004-530 Coimbra, Portugal; Affiliation: Departamento de Ciências da Terra, Faculdade de Ciências e Tecnologia, Universidade de Coimbra, Largo Marquês de Pombal, 3000-272 Coimbra, Portugal; Affiliation: Radiation Research Division, Risø DTU, DK-4000 Roskilde, Denmark; Affiliation: Nordic Laboratory for Luminescence Dating, Department of Earth Sciences, Aarhus University, Risø DTU, DK-4000 Roskilde, Denmark; Affiliation: UMR 6042 GEOLAB, INRAP–Direction interrégionale Centre/Île-de-France, Base Orléans, France; Affiliation: Société d'Études et de Recherche sur le Paléolithique de la Vallée de la Claise, Les Chirons, 37290 Preuilly-sur-Claise, France; Number of Pages: 22; Language: English;</p>


  • Bal Marie-Claude, Allée Philippe et Liard Morgane« The origins of a Nardus stricta grassland by charcoal analyses and the history of a mountain cultural landscape since the Neotithic (mont Lozère, France) », Quaternary International, p. 1-12. DOI : http://dx.doi.org/10.1016/ j.quaint.2014.11.054. https://hal-unilim.archives-ouvertes.fr/hal-01126687.
    Résumé : This paper presents the use of soil charcoal analyses in order to identify the origin of a Nardus stricta grassland in a mountain system (Mont Lozere, France), and the use of environmental resources and the construction of a cultural landscape. Two opposing theories have been proposed to explain the origin of this open landscape (1450e1700 m altitude): natural or anthropogenic. The identification and radio- carbon dates of charcoal fragments of Fagus sylvatica, which were found in all of the pits located in the current grassland area and dated to 3695e3633 cal BC, demonstrate that this species has been present on the upper part of Mont Lozere since the Middle Neolithic. In addition, the presence of pioneer species (Betula, Salix, Corylus avellana), as well as mid- (Prunus cf avium) and late-successional species (F. syl- vatica) supports the hypothesis that the grassland contained both pioneer and mature phases of forest landscapes. The 14C dates, ranging from c. 4200 cal BC to 1200 cal AD, show that fire events occurred with different climatic influences. Fire events may correspond to one or several fires in a short period at the scale of the slope. Moreover, the dates coincide with the early and extensive human impact detected in the Massif Central and Mont Lozere. To explain the regular occurrences of fire events from the Middle Neolithic to the Central Middle Ages, agro-pastoral clearings have been postulated, as have been iden- tified in other areas in the Pyrenees and in the Alps. Such human impact may have been magnified, or least facilitated, by climatic conditions. Comparison with additional data (pollen, archaeology, ecology) demonstrates that this grassland area is not natural and corresponds to an ancient forested system that has been used and transformed by societies since the Neolithic, although climate change may have certainly affected this transformation. The aim of this research is to promote this cultural heritage in collaboration with the National Park of the Cevennes in order to protect its future.
    Mots-clés : Agro-pastoral activities, Cultural landscape, HOLOCENE, Pedoanthracology.


  • Ballesteros-Cánovas Juan A., Rodríguez-Morata Clara, Garófano-Gómez Virginia, Rubiales Juan M., Sánchez-Salguero Raúl et Stoffel Markus« Unravelling past flash flood activity in a forested mountain catchment of the Spanish Central System », Journal of Hydrology, p. In press. DOI : 10.1016/j.jhydrol.2014.11.027. https://hal.archives-ouvertes.fr/hal-01109535.
    Résumé : Flash floods represent one of the most common natural hazards in mountain catchments, and are frequent in Mediterranean environments. As a result of the widespread lack of reliable data on past events, the understanding of their spatio-temporal occurrence and their climatic triggers remains rather limited. Here, we present a dendrogeomorphic reconstruction of past flash flood activity in the Arroyo de los Puentes stream (Sierra de Guadarrama, Spanish Central System). We analyze a total of 287 increment cores from 178 disturbed Scots pine trees (Pinus sylvestris L.) which yielded indications on 212 growth disturbances related to past flash flood impact. In combination with local archives, meteorological data, annual forest management records and highly-resolved terrestrial data (i.e., LiDAR data and aerial imagery), the dendrogeomorphic time series allowed dating 25 flash floods over the last three centuries, with a major event leaving an intense geomorphic footprint throughout the catchment in 1936. The analysis of meteorological records suggests that the rainfall thresholds of flash floods vary with the seasonality of events. Dated flash floods in the 20th century were primarily related with synoptic troughs owing to the arrival of air masses from north and west on the Iberian Peninsula during negative indices of the North Atlantic Oscillation. The results of this study contribute considerably to a better understanding of hazards related with hydrogeomorphic processes in central Spain in general and in the Sierra de Guadarrama National Park in particular.
    Mots-clés : Dendrogeomorphology, Flash flood, Hydrometeorological triggers, Paleohydrology, Sierra de Guadarrama, Tree ring.

  • Beauger Aude et Lair Nicole« Analyse des principales méthodes de bio-évaluation basées sur les macroinvertébrés benthiques. », Bulletin de la société linnéenne de Lyon, Bulletin hors série n° 4, p. 15-34. https://hal.archives-ouvertes.fr/hal-01081925.

  • Beauger Aude, Peiry Jean-Luc, Lair Nicole et Voldoire Olivier« Ecological characterization of natural and impacted meander cut-offs of the River Allier using benthic macroinvertebrates », Ephemera, 14 (2), p. 83-106. https://hal.archives-ouvertes.fr/hal-01077881.
    Résumé : Today, the hydrological function and biodiversity of riverine secondary channels are generally recognized and managers tend to protect and restore them. In this study we focused on different parapotamal meander cut-offs. Six sites were examined, two of them being impacted by gravel extraction or deepened for halieutic activity. In order to test whether systematic differences in communities occurred upstream and downstream of the different sites, temperature and dissolved oxygen concentration were continuously monitored, other physical and chemical data were monthly measured and benthic macroinvertebrates were sampled in two seasons. Related to the abiotic data, in each site, water exchanges occurred between the river and / or the groundwater. In the unmodified sites, those few silted up displayed the greatest biodiversity with numerous EPT (Ephemeroptera, Plecoptera and Trichoptera) while in those largely silted, the habitat homogeneity induced a low biodiversity. In the two impacted sites, the upstream modification enhanced natural silting and few EPT were present while in the site largely open to the river, water quality, diversity and EPT richness remained high.
    Mots-clés : between-class Correspondence Analysis (bCA), habitats, physical and chemical monitoring.


  • Beauger Aude, Serieyssol Karen et Peiry Jean-Luc« Diatom distribution in natural and impacted cut-off meanders of the Allier River, France », Diatom Research, 29 (2), p. 119-145. DOI : 10.1080/0269249X.2013.863224. https://hal.archives-ouvertes.fr/hal-01077852.
    Résumé : basalt and downstream – sedimentary), differ in their degrees of infill or depth. In each region, three cut-off meanders were examined; one in each region was impacted by gravel extraction (upstream deepening) and halieutic improvement (downstream deepening), whereas the others were left in their natural state having different silt accumulations either almost cut-off from the river or less silted-up and more open to the river. The sites were monitored for one year for physical and chemical characteristics. Diatom samples collected in summer 2009 were examined along with their associated biocenosis. The two catchments, differing in geology, land-use and water quality, sheltered different diatom communities. Physical and chemical differences were recorded between up- and downstream zones of each cut-off meander due to both the influence of the groundwater (buffering the water temperature among others) and the periodic inflow from the main channel (increased oxygen saturation concentration in downstream end of the cut-off meanders, except for the impacted upstream zone which contained a lot of macrophytes). In the upstream reach (except for one site), the connection with the groundwater from the surrounding catchment, which acts as a hydro-geological reservoir, might explain the highest mineralization and water hardness recorded mainly in the upstream zone of the cut-off meander, and the presence of Pseudostaurosira subsalina (Hustedt) Morales and Thalassiosira weissflogii (Grunow) Fryxell & Hasle. For the downstream reach, in addition to up- and downstream differences, other factors came into play giving rise to different communities, for example, cattle trampling in the cut-off meander leading to the presence of hypereutrophic and polysaprobic taxa or the potential local re-emergence of mineral springs associated with brackish taxa. Moreover, the up- or downstream deepening also induced differences: the extraction of sediment nearer to the river created a system in which water input from the main channel flows in through a larger opening, inducing allochthonous processes. This increased the river’s influence, creating a renewal of earlier morphological and ecological conditions, whereas the gravel extraction that modified the upstream zone increased the influence of groundwater from the surrounding catchment on this area of the site and led to water conditions independent of the main channel. Furthermore, this study has provided an important picture of the environmental variables, mechanisms and processes that drive the distribution of diatoms within the cut-off meanders along the Allier River, which can can be applied in future paleo-environmental studies.
    Mots-clés : cut-off meanders, ecology, multivariate analyses, taxa distribution, water chemistry.

  • Beaurain Christophe et Delphine Varlet« Quelques pistes de réflexion pour une approche pragmatiste de l’écologie industrielle : l’exemple de l’agglomération dunkerquoise ", Revue Développement durable et territoire », Développement Durable et territoires, 5 (1). https://hal.archives-ouvertes.fr/hal-01130359.
    Mots-clés : développement durable, ecologie industrielle, Pragmatisme économique.

  • Beaurain Christophe et Varlet Delphine« Quelques pistes de réflexion pour une approche pragmatiste de l’écologie industrielle: l’exemple de l’agglomération dunkerquoise », Développement durable et territoires. Économie, géographie, politique, droit, sociologie. http://developpementdurable.revues.org/10111.

  • Bernardie-Tahir Nathalie et Schmoll Camille« Islands and Undesirables: Introduction to the Special Issue on Irregular Migration in Southern European Islands », Journal of Immigrant & Refugee Studies, 12 (2), p. 87–102. http://www.tandfonline.com/doi/abs/10.1080/15562948.2014.899657.

  • Bernardie-Tahir Nathalie et Schmoll Camille« Guest Editorial Introduction: The uses of islands in the production of the southern European migration border », Island Studies Journal, 9 (1), p. 3–6. http://www.islandstudies.ca/sites/islandstudies.ca/files/ISJ-9-1-B-Tahir+Schmoll-A.pdf.

  • Bernardie-Tahir Nathalie et Schmoll Camille« Opening up the island: a ‘counter-islandness’ approach to migration in Malta », Island Studies Journal, 9 (1), p. 43–56. http://www.islandstudies.ca/islandstudies.ca/sites/islandstudies.ca/files/ISJ-9-1-B-Tahir+Schmoll-B.pdf.


  • Bertran Pascal, Andrieux Eric, Antoine Pierre, Coutard Sylvie, Deschodt Laurent, Gardere Philippe, Hernandez Marion, Legentil Claude, Lenoble Arnaud, Liard Morgane, Mercier Norbert, Moine Olivier, Sitzia Luca et Van Vliet-Lanoe Brigitte« Distribution and chronology of Pleistocene permafrost features in France; database and first results », Boreas, 43 (3), p. 699-711. DOI : 10.1111/bor.12025. http://search.ebscohost.com/login.aspx?direct=true&db=guh&AN=698751-12&lang=fr&site=eds-live.
    Résumé : Numerous periglacial features (polygons, nets, soil stripes, ice-wedge pseudomorphs and sand-wedge casts, involutions) have been recorded in France by examining bibliographical sources and aerial photographs. These data show that a large part of France was affected by permafrost during the Pleistocene and only the southern Aquitaine Basin and Languedoc seem to have been beyond its maximum extent. The first OSL ages obtained from the aeolian infill of wedge structures indicate that at least two phases of thermal contraction cracking occurred in southwestern France between approximately 25 and 36 ka. Chronostratigraphical data from loess in northern France indicate that these episodes correspond to the formation of ice-wedge networks associated with tundra gleys. In the latter region, two additional permafrost episodes probably occurred during the Last Glacial, the older one corresponding to the end of Marine Isotope Stage (MIS) 4 around 60 ka and the more recent one to MIS 2 around 19-16 ka. Although stratigraphical data indicate that these episodes were relatively short (about one millennium), relict permafrost may have existed for longer periods in northern France. Abstract Copyright (2013), The Boreas Collegium.
    Note Note
    <p>Accession Number: 698751-12; Language: English; Coden: BRESB3; Collation: 13; Publication Types: Serial; Illustration(s): illus. incl. 1 table, sect., strat. col., geol. sketch maps; Number of References: 96; Reviewed Item: Analytic</p>


  • Binder Didier, Hamon Caroline, Bellot-Gurlet Ludovic, Beyries Sylvie, Jean-Victor Pradeau, Vautier Franck et Voldoire Olivier« First Sculpted Human Face in the Western Mediterranean Early Neolithic », Cambridge Archaeological Journal, 24, p. 1-17. DOI : http://dx.doi.org/10.1017/S0959774314000043. https://hal.archives-ouvertes.fr/hal-01100046.
    Résumé : The development of Neolithic lifestyle in the Western Mediterranean during the 6th millennium cal BCE is the consequence of the spread of populations from the Near East after successive stages of cultural remodelling. Despite a clear contribution of the Near-Eastern and Aegean Neolithic to the economic and technical changes that happened to the West, few is known here about their symbolic legacies, because of the scarcity of representations and ritual evidences associated to the earliest Western Neolithic contexts. Excavations at the rock shelter of Pendimoun (South-Eastern France) yielded the first anthropomorphic stone sculpture from the Western Mediterranean Neolithic (Early 6th millennium cal BCE). Using both carving and painting techniques, it represents a rather realistic human face which is a unicum within the Western Mediterranean and European frames. After having described the shaping and colouring details of the mask, the authors here deal with its possible social significances and cultural connections.
    Mots-clés : anthropomorph, neolithic, sculpture, symbolism.


  • Binder Didier, Hamon Caroline, Bellot-Gurlet Ludovic, Beyries Sylvie, Pradeau Jean-Victor, Vautier Franck et Voldoire Olivier« First Sculpted Human Face in the Western Mediterranean Early Neolithic », Cambridge Archaeological Journal, 24 (01), p. 1–17. DOI : 10.1017/S0959774314000043. http://journals.cambridge.org/article_S0959774314000043.
    Résumé : The development of the Neolithic way of life in the western Mediterranean during the sixth millennium cal. BC is the consequence of the spread of populations from the Near East after successive stages of cultural remodelling. Despite the clear contribution of the Near Eastern and Aegean Neolithic to the economic and technical changes that happened to the west, little is known here about their symbolic legacies, because of the scarcity of representations and ritual evidences associated to the earliest western Neolithic contexts. Excavations at the rock shelter of Pendimoun (southeastern France) yielded the first anthropomorphic stone sculpture from the western Mediterranean Neolithic (early sixth millennium cal. BC). Using both carving and painting techniques, it represents a realistic-looking human face and is a unique example within the western Mediterranean and European frameworks. After describing the shaping and colouring details of the mask, the authors here deal with its possible social significances and cultural connections.

  • Boumédiène Farid, Marin Benoît, Druet-Cabanac Michel et Preux Pierre-Marie« Emergence de la géoépidémiologie socio environnementale au service des pays de la zone tropicale », Revue neurologique. DOI : 10.1016/j.neurol.2014.01.014.


  • Chevallier Marius, Dellier Julien et Richard Frédéric« Development and patterns of short food supply chains in Limousin (France): weak political and institutional framework - strong spatial and relational proximities », Géographie, Economie, Société, 16 (3), p. 339-362. DOI : 10.3166/ges.16.339-362. https://hal.archives-ouvertes.fr/hal-01089464.
    Mots-clés : circuits courts agroalimentaires, économie informelle, institutions, progressive local development, proximité, social innovation, socio-territorial capital, territoire, workers cooperative.

  • Chevallier Marius, Dellier Julien, Richard Frédéric et Plumecocq Gaël« Dynamiques et structuration des circuits courts agroalimentaires en Limousin : distance institutionnelle, proximités spatiale et relationnelle », Géographie, Economie, Société, 16 (3), p. 339-362. DOI : 10.3166/ges.16.339-362.

  • Corenblit D., Steiger Johannes, Tabacchi E., González E. et Planty-Tabacchi A.-M.« Ecosystem engineers modulate exotic invasions in riparian plant communities by modifying hydrogeomorphic connectivity », River Research and Applications, 30 (1), p. 45–59. http://onlinelibrary.wiley.com/doi/10.1002/rra.2618/full.


  • Corenblit Dov, Steiger Johannes, González E., Gurnell A. M., Charrier G., Darrozes J., Dousseau J., Julien F., Lambs L., Larrue Sébastien, Roussel Erwan, Vautier Franck et Voldoire Olivier« The biogeomorphological life cycle of riparian poplar during the fluvial biogeomorphological succession: a special focus on Populus nigra L. », Earth Surface Processes and Landforms, 39 (4), p. 546–563. DOI : 10.1002/esp.3515. https://hal.archives-ouvertes.fr/hal-01059244.
    Résumé : Riverine ecosystems are recurrently rejuvenated during destructive flood events and vegetation succession starts again. Poplars (i.e. species from Populus genera) respond to hydrogeomorphological constraints, but, in turn, also influence these processes. Thus, poplar development on bare mineral substrates is not exclusively a one-way vegetative process. Reciprocal interactions and adjustments between poplar species and sediment dynamics during their life cycle lead to the emergence of biogeomorphological entities within the fluvial corridor, such as vegetated islands, benches and floodplains. Based on a review of geomorphological, biological and ecological literature, we have identified and described the co-constructing processes between riparian poplars and their fluvial environment. We have explored the possibility that the modification of the hydrogeomorphological environment exerted, in particular, by the European black poplar (Populus nigra L.), increases its fitness and thus results in positive niche construction. We focus on the fundamental phases of dispersal, recruitment and establishment until sexual maturity of P. nigra by describing the hierarchy of interactions and the pattern of feedbacks between biotic and abiotic components. We explicitly relate the biological life cycle of P. nigra to the fluvial biogeomorphic succession model by referring to the ‘biogeomorphological life cycle’ of P. nigra. Finally, we propose new research perspectives based on this theoretical framework. Copyright © 2014 John Wiley & Sons, Ltd.
    Mots-clés : abiotic-biotic feedback, biogeomorphological life cycle, biogeomorphology, engineer species, evolutionary geomorphology, fluvial biogeomorphic succession model, Salicaceae.


  • Corona Christophe, Saez Jérôme Lopez et Stoffel Markus« Defining optimal sample size, sampling design and thresholds for dendrogeomorphic landslide reconstructions », Quaternary Geochronology, 22 (22), p. 72-84. DOI : 10.1016/j.quageo.2014.02.006. https://hal.archives-ouvertes.fr/hal-01131655.
    Résumé : Trees affected by mass movements record the evidence of geomorphic disturbance in their growth-ring series, and thereby provide a precise geochronological tool for the reconstruction of past process activity. At the tree scale, identification of past mass movements was typically based on the presence of growth anomalies and focused on the presence of scars, tilted or buried trunks, as well as on apex decapitation. In terms of sampling strategy, however, clear guidelines have been largely missing. Most previous work was based either on the sampling of visibly disturbed trees irrespective of their position at the study site or on the systematic sampling of trees evenly distributed along transects. Based on a dense dataset of 323 trees growing on an active landslide body, this study aims at defining guidelines for future tree-ring sampling of landslides. Using random extractions of trees and iterative mapping, we investigate subsets of the full tree-ring sample to define optimal sampling strategy, sample depth and trees for the development of frequency maps of landslide reactivations. We demonstrate that (i) the sampling of 50-100 trees can be sufficient to obtain satisfactory results on landslide frequency without including noise to the dendrogeomorphic record; (ii) increasing growth disturbance thresholds should be adjusted to sample size and are preferable to fixed values; (iii) an even distribution of sampled trees is crucial to increase the reliability of frequency maps, even more so if the reconstruction is based on small sample sizes; and that (iv) the selection of the most frequently disturbed trees is key to reduce uncertainties in the frequency maps. The optimization of sample sizes and the adjustment of sampling strategy will not only facilitate fieldwork and render analyses and interpretation more reliable, but will also ultimately allow reconstruction of time series of past mass movements with reasonable temporal efforts and excellent cost-benefit ratios.
    Mots-clés : Dendrogeomorphology, mass movement, Sample size, Sampling design, Spatial analysis.
  • Deberge Yann, Baucheron F., Cabezuelo U., Caillat Pierre, Gatto E., Landry C., Leguet D., Pasty Jean-François, Pertlweiser T., Vermeulen C. et Vernet Gérard« Témoignages de la Guerre des Gaules dans le bassin clermontois, nouveaux apports. », Revue archéologique du Centre de la France, 53, p. 2-52.


  • Delzor Aurélie, Couratier Philippe, Boumédiène Farid, Nicol Marie, Druet-Cabanac Michel, Paraf François, Méjean Annick, Ploux Olivier, Leleu Jean-Philippe, Brient Luc, Lengronne Marion, Pichon Valérie, Combès Audrey, El Abdellaoui Saïda, Bonneterre Vincent, Lagrange Emmeline, Besson Gérard, Bicout Dominique J, Boutonnat Jean, Camu William, Pageot Nicolas, Juntas-Morales Raul, Rigau Valérie, Masseret Estelle, Abadie Eric, Preux Pierre-Marie et Marin Benoît« Searching for a link between the L-BMAA neurotoxin and amyotrophic lateral sclerosis: a study protocol of the French BMAALS programme. », BMJ Open, 4 (8), p. e005528. DOI : 10.1136/bmjopen-2014-005528. https://hal-unilim.archives-ouvertes.fr/hal-01073863.
    Résumé : INTRODUCTION: Amyotrophic lateral sclerosis (ALS) is the most common motor neurone disease. It occurs in two forms: (1) familial cases, for which several genes have been identified and (2) sporadic cases, for which various hypotheses have been formulated. Notably, the β-N-methylamino-L-alanine (L-BMAA) toxin has been postulated to be involved in the occurrence of sporadic ALS. The objective of the French BMAALS programme is to study the putative link between L-BMAA and ALS. METHODS AND ANALYSIS: The programme covers the period from 1 January 2003 to 31 December 2011. Using multiple sources of ascertainment, all the incident ALS cases diagnosed during this period in the area under study (10 counties spread over three French regions) were collected. First, the standardised incidence ratio will be calculated for each municipality under concern. Then, by applying spatial clustering techniques, overincidence and underincidence zones of ALS will be sought. A case-control study, in the subpopulation living in the identified areas, will gather information about patients' occupations, leisure activities and lifestyle habits in order to assess potential risk factors to which they are or have been exposed. Specimens of drinking water, food and biological material (brain tissue) will be examined to assess the presence of L-BMAA in the environment and tissues of ALS cases and controls. ETHICS AND DISSEMINATION: The study has been reviewed and approved by the French ethical committee of the CPP SOOM IV (Comité de Protection des Personnes Sud-Ouest & Outre-Mer IV). The results will be published in peer-reviewed journals and presented at national and international conferences.
  • Didolot F.« La force du plan simple de gestion », Forêt Entreprise, 216, p. 21-24.


  • Ejarque A., Beauger Aude, Miras Y., Peiry J.-L., Voldoire O., Vautier F., Benbakkar M. et Steiger J.« Historical fluvial palaeodynamics and multi-proxy palaeoenvironmental analyses of a palaeochannel, Allier River, France », Geodinamica Acta, 27 (1), p. 1-23. DOI : 10.1080/09853111.2013.877232. http://dx.doi.org/10.1080/09853111.2013.877232.
    Résumé : A palaeoenvironmental study of a palaeochannel within the lower alluvial floodplain of the Allier River, France, has been carried out at a high temporal resolution. Research was based upon a multi-proxy approach using different sedimentological (magnetic susceptibility, sediment texture and loss on ignition) and palaeoecological (pollen, non-pollen palynomorphs (NPPs), diatoms – indicators). The palaeochannel was dated from six radiocarbon dates and spans from the second to the eleventh century AD. The cultural landscape history of this floodplain and the progressive hydrological disconnection of the palaeochannel between the Antiquity and the early Middle Ages could be reconstructed according to several characteristic environmental phases. Co-inertia analysis linking pollen, NPPs and diatom corroborated the significant co-structure of these proxies and allowed to distinguish functional palaeoecological groups in terms of landscape openness, on-site aquatic and hygrophilous vegetation, riparian woodland, soil moisture and grazing pressure. Results obtained underpin the importance of grazing as a major agent of landscape change in floodplains, especially since the ninth century AD, when the clearance of the riparian woodland is attested. Gallo-Roman and Late-Antiquity land-use systems, on the contrary, allowed for the preservation of riparian fluvial landscapes.


  • Ettinger Susanne, Manville Vern, Kruse Sarah et Paris Raphaël« GPR-derived architecture of a lahar-generated fan at Cotopaxi volcano, Ecuador », Geomorphology, 213, p. 225-239. DOI : 10.1016/j.geomorph.2014.01.013. https://hal.archives-ouvertes.fr/hal-01134303.
    Résumé : The internal geometry of volcaniclastic fans produced by aggradation during lahar events is difficult to examine in modern settings because of the frequent lack of three-dimensional exposures. This makes it challenging to (i) reconstruct the spatial and temporal evolution of such fans; and (ii) interpret observed facies stratigraphy in the context of lahar flow dynamics from proximal to distal fan reaches. This research therefore presents the results of a ground penetrating radar (GPR) survey of the Rumipamba fan at the mouth of the Burrohuaycu quebrada on the southwestern flank of Cotopaxi volcano. A survey grid consisting of 50 individual GPR profiles representing a total length of 19.4 km was constructed covering most of the 4-km2 large fan surface. All GPR profiles were collected using a PulseEKKO 100 with a 400 V transmitter. Fan sediments consist of sandy and gravelly lahar deposits, alternating with volcanic fallout including ash and pumice lapilli, at times reworked by fluvial processes. Deposits could be ground-truthed to a depth of ~3 m, whereas GPR penetration depth reaches 15 m. Data interpretation was based on classification into 15 distinct radar facies characterized by the nature of their bounding surfaces and/or internal features, cross-referenced where possible with shallow exposures. Three main facies were identified: parallel, irregular, and clinoform. Erosional contacts were distinguished from aggradational ones (vertical, channel fill, and lateral accretion). Flow parallel versus flow transverse and proximal–distal variations in deposit architecture were featured. The results of this study confirm the existence of two major channel systems in the northern and southern extremities of the fan and the more recent formation of a smaller central fan channel system. Deposit architecture is complex and facies chronologies illustrate that lahars have affected the entire survey area.
    Mots-clés : Architecture, Ecuador, Ground penetrating radar, Lahar, Sediment, Volcano.

  • García Álvarez Salvia, Morla Juaristi Carlos, Paull Rosemary et Garcia-Amorena IGNACIO« A taxonomic tool for identifying needle remains of south-western European Pinus species of the Late Quaternary », Botanical Journal of the Linnean Society, 175 (2), p. 282-298. DOI : 10.1111/boj.12166.
    Résumé : This work provides a tool whereby the needle remains of native, south-western European Pinus spp. can be easily identified from species-specific epidermal features. To construct this tool, the needles of P. uncinata, P. sylvestris, P. nigra, P. pinaster, P. pinea and P. halepensis were gathered across the Northern Hemisphere range of each taxon and compared with non-indigenous trees growing in two South Australian Botanic Gardens. Three needles from each of these species were taken from three adult trees growing at three different localities. Light microscopy was used to observe the key epidermal and stomatal features of the needles. To improve interpretation, additional scanning electron microscopy samples were prepared. Epidermal features, including variation in the diameter of the epistomatal chamber aperture (pore), are described. A taxonomic key based on the size, shape and arrangement of the subsidiary cells of the stomatal complexes was constructed. This key enables the identification of pine needle fragments at the species level (except those belonging to the group P. gr. nigra-uncinata). Despite their overlapping range, pore size was helpful in distinguishing between P. nigra and P. uncinata and between three groups of species. Isolated stomata were also observed. Cluster and discriminant analyses of stomatal variables described in earlier studies were performed. Overlap in guard cell variables hampers species-level identification of isolated stomata. Species discrimination is improved if groups of ecological affinity are considered.
    Mots-clés : cuticle, epidermis, Holocene, Iberian Peninsula, macrofossil, stomata.

  • Gibout Christophe et Zwarterook Irénée« Gérer les risques industriels et la pollution dans le Dunkerquois: une double échelle transactionnelle », Pensée plurielle, 2, p. 131–148. http://www.cairn.info/resume.php?ID_ARTICLE=PP_033_0131.

  • González Eduardo, Cabezas Álvaro, Corenblit Dov et Steiger Johannes« Autochthonous Versus Allochthonous Organic Matter in Recent Soil C Accumulation Along a Floodplain Biogeomorphic Gradient: An Exploratory Study », Journal of Environmental Geography, 7 (1-2), p. 29–38. http://www.degruyter.com/view/j/jengeo.2014.7.issue-1-2/jengeo-2014-0004/jengeo-2014-0004.xml.

  • Goubet Pierre et Darinot Fabrice« L’histoire de la tourbière de la Réserve naturelle nationale du Marais de Lavours : ce que nous révèlent les macrorestes », Bulletin hors série n°3 de la société linéenne, p. 17-29. https://hal.archives-ouvertes.fr/hal-01133493.


  • Guyot Sylvain, Dellier Julien et Cerbelaud Fabien« L’environnement au profit des plus riches ? Construction et hybridation d’un front écologique métropolitain dans la Péninsule du Cap (Afrique du Sud) », VertigO : la Revue Électronique en Sciences de l'Environnement, 14 (1). DOI : 10.4000/vertigo.14660. https://hal.archives-ouvertes.fr/hal-01118886.
    Mots-clés : AFRIQUE DU SUD, apartheid/postapartheid, Blancs, front d’urbanisation, front écologique, hybridation, métropole, parc national, péninsule du Cap.


  • Larrue Sébastien« Cyclones influence native plant diversity on 22 remote high islands of French Polynesia and Pitcairn (eastern Polynesia). », Physical Geography, p. 497-513. DOI : 10.1080/02723646.2014.946808. https://hal.archives-ouvertes.fr/hal-01122871.
    Résumé : I examined the relative influence of eight spatial characteristics on native plant diversity in 22 volcanic high islands of eastern Polynesia. The characteristics used as potential predictors in this study included island area, highest elevation, distance to the nearest continent, distance to the nearest archipelago, distance to the nearest similar island, index of isolation, distance to the largest and highest island of Tahiti, and distance to the “cyclonic alley.” Among characteristics studied, native plant diversity (indigenous and endemic species) was primarily linked with the island area and highest elevation of the islands. Contemporary cyclones were an important predictor to explain indigenous plant diversity in the remote islands surveyed. In the study area, this result suggests that cyclones, moving from the west Pacific Ocean basin to the eastern Polynesian islands, have provided more indigenous species in the remote high islands located close to the cyclonic alley. Isolation did not appear as a significant predictor to explain native plant diversity in the high islands surveyed, possibly due to a stepping-stone-island-effect and the proximity of the cyclonic alley. These findings suggest that isolation could be tempered by a cyclonic-transport-flow-effect in the study area, thus reducing the effective distance of the remote islands from the mainland source pool for seed dispersal.
    Mots-clés : Abiotic factors, cyclones, eastern Polynesia, island biogeography, native plant diversity.

  • Larrue Sébastien, Daehler Curtis C., Vautier Franck et Bufford Jennifer L.« Forest Invasion by the African tulip tree (Spathodea campanulata) in the Hawaiian Islands: Are Seedlings Shade-Tolerant? », Pacific Science, 68 (3), p. 345-358. https://hal.archives-ouvertes.fr/hal-01122865.
    Résumé : Native to West Africa, Spathodea campanulata (African tulip tree) is frequently viewed as a shade-intolerant invader. It commonly colonizes roadsides, human-disturbed forests and abandoned agricultural land in tropical islands, where it can then become dominant in secondary forests. Some authors have suggested that the seedlings may be shade-tolerant and able to establish in closed forest, but the shade tolerance of seedlings has never been evaluated. We identified tolerated light environments of S. campanulata seedlings in wet forests in Hawaii by measuring photosynthetically active radiation (PAR) around naturally occurring seedlings (< 30 cm height) in the field. We also measured photosynthetic responses of seedlings to light under field and lab conditions, and determined seedling growth rates in sun and shade. Seedlings were found in shaded conditions in the field, and they consistently had positive net carbon gain at 50 µmol photons m-2·s-1 PAR, with an estimated mean compensation point below 10 µmol photons m-2·s-1, indicating high shade tolerance. The most frequent midday light environments of S. campanulata seedlings in the field were in the range around 50 to 200 µmol photons m-2·s-1 PAR, i.e., 2.5% to 10% of full sunlight. Among seedlings found growing in shade, minimum saturating light (Ek), determined from chlorophyll fluorescence, averaged 260 µmol photons m-2·s-1, suggesting that seedling maximum photosynthesis can occur at less than 13% of full sun. Growth rates of young seedlings in shade and sun were comparable. Widespread wind dispersal of seeds, seedling tolerance of low light, and our observations of some S. campanulata saplings establishing in rainforest without recent disturbance suggest that S. campanulata will be a persistent component of Hawaiian lowland rainforests.
    Mots-clés : Biogeography, Hawaiian Islands, Invasive species, photosynthetically active radiation (PAR), shade tolerance, Spathodea campanulata.
  • Linton Jamie« Modern Water and its Discontents: a history of hydrosocial renewal », WIREs Water, 1 (1), p. 111-120.

  • Linton Jamie« Modern water and its discontents: a history of hydrosocial renewal », Wires Water, 1 (January/February), p. 111-120. https://hal.archives-ouvertes.fr/hal-01135003.
    Résumé : Water planning and management in the 20th century were characterized by a particular way of understanding and relating to water that may be described in terms of 'modern water'. Essentially, modern water is a way of knowing, accounting for, and representing water apart from its social context. Modern water replaced a wealth of different waters whose essence was defined by the social circumstances in which they occurred, rather than by the compound of oxygen and hydrogen to which all waters may be reduced. This paper traces the history of modern water and describes its current retreat in the face of circumstances that call for the resocialization of waters. Several examples of this resocialization are given, including a new way of representing hydrosocial relations known as the 'hydrosocial cycle', the campaign for the human right to water and emerging practices in water engineering and water management.
    Mots-clés : paradigm change, water, water history, water management.

  • Linton Jamie et Budds Jessica« The hydrosocial cycle: Defining and mobilizing a relational-dialectical approach to water », Geoforum, 57, p. 170-180. https://hal.archives-ouvertes.fr/hal-01134992.
    Résumé : The relationship between water and society has come to the forefront of critical inquiry in recent years, attracting significant scholarly and popular interest. As the state hydraulic paradigm gives way to modes of water governance, there is a need to recognize, reflect and represent water's broader social dimensions. In this article, we advance the concept of the hydrosocial cycle as a means of theorizing and analyzing water-society relations. The hydrosocial cycle is based on the concept of the hydrologic cycle, but modifies it in important ways. While the hydrologic cycle has the effect of separating water from its social context, the hydrosocial cycle deliberately attends to water's social and political nature. We employ a relational-dialectical approach to conceptualize the hydrosocial cycle as a socio-natural process by which water and society make and remake each other over space and time. We argue that unravelling this historical and geographical process of making and remaking offers analytical insights into the social construction and production of water, the ways by which it is made known, and the power relations that are embedded in hydrosocial change. We contend that the hydrosocial cycle comprises a process of co-constitution as well as material circulation. Existing work within the political ecology tradition considers the co-constitution of water and power, particularly in relation to processes of capital accumulation. We propose the hydrosocial cycle as an analytical tool for investigating hydrosocial relations and as a broader framework for undertaking critical political ecologies of water.
    Mots-clés : hydrosocial cycle, political ecology, politics, water.

  • Marin Benoit, Hamidou Bello, Couratier Philippe, Nicol Marie, Delzor Aurélie, Raymondeau Marie, Druet-Cabanac Michel, Lautrette Géraldine, Boumédiène Farid et Preux Pierre-Marie« Population-based epidemiology of amyotrophic lateral sclerosis (ALS) in an ageing Europe–the French register of ALS in Limousin (FRALim register). », European Journal of Neurology, p. 1292-300, e78-9. https://hal-unilim.archives-ouvertes.fr/hal-01101244.
    Résumé : BACKGROUND AND PURPOSE: The main objective of establishing the French register of amyotrophic lateral sclerosis (ALS) in the Limousin region (FRALim), was to assess the incidence of ALS, in this ageing region of Europe, over a 12-year period (2000-2011). METHODS: Patients were included if they lived in Limousin at the time of diagnosis of ALS according to El Escorial revised criteria and were identified by at least one of the following sources: (i) the French national body coordinating ALS referral centres; (ii) public and private hospitals in the region; (iii) health insurance data related to long-term diseases. RESULTS: The FRALim register identified 279 incident cases (2000-2011). The crude and European population standardized incidences of ALS were as high as 3.19/100,000 person-years of follow-up (95% CI 2.81-3.56) and 2.58/100,000 person-years of follow-up (95% CI 2.27-2.89) respectively. Median age at onset was 70.8 years (interquartile range 63.1-77.1). The standardized sex incidence ratio (male/female) was 1.3 overall, but 1.1 under the age of 65 years, 1.7 between 65 and 75 years and 1.9 above 75 years. The exhaustiveness of the register has been estimated at 98.4% (95% CI 95.6-99.4) by capture-recapture analysis. CONCLUSION: It was possible for the first time in France to monitor accurately the incidence of ALS over a long time period. It appears to be in the upper range of data reported in western countries. Patterns displayed here might anticipate the epidemiology of ALS in ageing western countries.
    Mots-clés : amyotrophic lateral sclerosis, epidemiology, France, incidence, population register.


  • Mohammed Nabaz, Celle-Jeanton Hélène, Huneau Frederic, Le Coustumer P., Lavastre V., Bertrand G., Charrier G. et Clauzet M.L.« Isotopic and geochemical identification of main groundwater supply sources to an alluvial aquifer, the Allier River valley (France) », Journal of Hydrology, 508, p. 181-196. DOI : 10.1016/j.hydrol.2013.10.051. https://hal.archives-ouvertes.fr/hal-01068229.
    Résumé : Hydrodynamic, hydrochemical, and isotopic investigations were carried out on 18 points, including boreholes, piezometers, and surface waters, from February 2011 to August 2012, to assess groundwater quality in the unconfined shallow alluvial aquifer of the Allier River (one of the main tributary of the Loire River). The study area, located near the city of Clermont-Ferrand (France), plays an important socio-economic role as the alluvial aquifer is the major source of drinking water for about 100,000 inhabitants. The objective of the project aims at understanding the functioning of alluvial aquifers that occupy a pre-eminent position in the hydrogeologic landscape both for their economic role - production of drinking water and agricultural development - and for their ecological role. Moreover, this study also targets at determining the factors and processes controlling shallow groundwater quality and origin. The water circulates from the south, with a natural alimentation from the hills in the non-pumped part of the alluvial aquifer. In the pumping zone, this general behaviour is altered by the pumping that makes the water from the Allier River enter the system in a large proportion. Four end-members have been identified for the recharge of the alluvial groundwater: rainfall, Allier River, surrounding hills' aquifer and the southern non-pumped part of the alluvial system. Results indicate that, despite the global Ca-HCO3 water type of the groundwater, spatial variations of physico-chemical parameters do exist in the study area. Ionic concentrations increase from the Allier River towards east due either to the increase in the residence time or a mixing with groundwater coming from the aquifer's borders. Stable isotopes of the water molecule show the same results: boreholes close to the river bank are recharged by the Allier River (depleted values), while boreholes far from the river exhibit isotopic contents close to the values of hills' spring or to the southern part of the alluvial aquifer, both recharged by local precipitation. One borehole (B65) does not follow this scheme of functioning and presents values attesting of a probable sealing of the Allier River banks. Based on these results, the contribution of each end-member has been calculated and the functioning of the alluvial system determined.
    Mots-clés : Allier River, Alluvial aquifer, Groundwater, Hydrochemistry, Stable isotopes.


  • Paradis-Grenouillet Sandrine, Allée Philippe, Servera Vives Gabriel et Ploquin Alain« Sustainable management of metallurgical forest on Mont Lozère (France) during the Early Middle Ages », Environmental Archaeology. DOI : 10.1179/1749631414Y.0000000050. https://hal.archives-ouvertes.fr/hal-01128683.
    Résumé : Mont Lozère, located in the French Massif Central region, provides an exceptional context in which to research the impact that charcoal production and metallurgy had on woodlands, along with the role that these activities played in changing the mountain landscape. This study provides an insight into the land use, forest management methods and metallurgical practices in the area during the Middle Ages (11th to 15th centuries). Medieval charcoal burning platforms, archaeological remains that have often been neglected in the past as a source of historical information, along with nearby smelting sites, were identified, sampled and analysed. In this paper, spatial analyses, radiocarbon dating and anthracological and dendro-anthracological studies have been combined in a unique manner. The results reveal that charcoal burners practiced beech coppicing, where the species and diameter of wood used remained the same over a period of four centuries. It is proposed that this form of metallurgical forest management be considered an early example of a sustainable utilisation of natural resources.
    Mots-clés : Charcoal analysis, Charcoal production, Forest management, Landscape evolution, Massif Central, Metallurgical activities.


  • Paris Raphaël, Wassmer Patrick, Lavigne Franck, Belousov Alexander, Iskandarsyah Yann, Benbakkar Mhammed, Ontowirjo Budianto, Mazzoni Nelly et Balousova Marina« Coupling eruption and tsunami records: the Krakatau 1883 case study, Indonesia », Bulletin of Volcanology, 76, p. 814. DOI : 10.1007/s00445-014-0814-x. https://hal.archives-ouvertes.fr/hal-01133616.
    Résumé : The well-documented 1883 eruption of Krakatau volcano (Indonesia) offers an opportunity to couple the eruption’s history with the tsunami record. The aim of this paper is not to re-analyse the scenario for the 1883 eruption but to demonstrate that the study of tsunami deposits provides information for reconstructing past eruptions. Indeed, though the characteristics of volcanogenic tsunami deposits are similar to those of other tsunami deposits, they may include juvenile material (e.g. fresh pumice) or be interbedded with distal pyroclastic deposits (ash fall, surges), due to their simultaneity with the eruption. Five kinds of sedimentary and volcanic facies related to the 1883 events were identified along the coasts of Java and Sumatra: (1) bioclastic tsunami sands and (2) pumiceous tsunami sands, deposited respectively before and during the Plinian phase (26–27 August); (3) rounded pumice lapilli reworked by tsunami; (4) pumiceous ash fall deposits and (5) pyroclastic surge deposits (only in Sumatra). The stratigraphic record on the coasts of Java and Sumatra, which agrees particularly well with observations of the 1883 events, is tentatively linked to the proximal stratigraphy of the eruption.
    Mots-clés : 1883 Krakatau eruption, Indonesia, Pyroclastic fall, Pyroclastic surge, Tsunami deposits, Volcanic tsunami.


  • Poiraud Alexandre« Landslide susceptibility–certainty mapping by a multi-method approach: A case study in the Tertiary basin of Puy-en-Velay (Massif central, France) », Geomorphology, 216, p. 208-224. DOI : 10.1016/j.geomorph.2014.04.001. https://hal.archives-ouvertes.fr/hal-01087903.
    Résumé : The present study discusses the use of integrated variables along with a combination of multi-method forecasts for landslide susceptibility mapping. The study area is located in the south-eastern French Massif central, a volcanic region containing Tertiary sedimentary materials that are prone to landslides. The flowage-type landslides within the study area are very slow-moving phenomena which affect the infrastructures and human settlements. The modelling process is based on a training set of landslides (70% of total landslides) and a set of controlling factor (slope, lithology, surficial formation, the topographic wetness index, the topographic position index, distance to thalweg, and aspect). We create a composite variable (or integrated variable), corresponding to the union of geology and surficial formation, in order to avoid the conditional dependence between these two variables and to build a geotechnical variable. We use five classical modelling methods (index, weight-of-evidence, logistic regression, decision tree, and unique condition unit) with the same training set but with different architectures of input data made up of controlling factors. All the models are tested with a validation group (30% of total landslides), using the Area Under the Receiver Operating Characteristic curve (AUC) to quantify their predictive performance. We finally select a single “best” model for each method. However, these five models are all equivalent in quality, despite their differences in detail, so no single model stands out against another. Finally, we combine the five models into a unique susceptibility map with a calculation of median susceptibility class. The final AUC value of this combined map is better than that for a single model (except for Unique Condition Unit), and we can evaluate the certainty of the susceptibility class pixel by pixel. In agreement with the sparse literature on this topic, we conclude that i) integrated variables increase the performance of classical modelling processes and ii) the combination of multi-method forecasts is a pragmatic solution to the inherent problem of choosing the most suitable method for the available data and geomorphological context.
    Mots-clés : Certainty mapping, Combination forecast, Integrated variable, Landslide susceptibility mapping, multi-method, Velay.

  • Rassat Graziella« Le repérage et l'étude des sites archéologiques sous couvert forestier charentais : de la prospection pédestre à l'utilisation de la technique LiDAR (Light Detection and Ranging). », Bulletin de liaison et d'information de l'Association des Archéologues de Poitou-Charentes, 43, p. 63-70. https://hal-unilim.archives-ouvertes.fr/hal-01126715.
    Mots-clés : Charente, Forêt, LiDAR, prospection archéologique.
  • Raynal Jean-Paul, Lafarge Audrey, Remy D., Delvigne Vincent, Guadelli Jean-Luc, Costamagno S., Daujeard C., Vivent D., Fernandes Paul, Le Corre-Le Beux M., Vernet Gérard, Bazille F. et Lefevre D.« Datations SMA et nouveaux regards sur l’archéo-séquence du Rond-du-Barry (Polignac, Haute-Loire) », CR Palevol, 13 (7), p. 623-636.


  • Richard Frédéric, Chevallier Marius, Dellier Julien et Lagarde Vincent« Rural Gentrifi cation and Economic Performance of Local Short Food Supply Chain in Limousin », Norois - Environnement, aménagement, société, 230. DOI : 10.4000/ norois.4997. https://hal.archives-ouvertes.fr/hal-01132481.
    Mots-clés : economic performance – short food supply chain – agriculture – social change – rural gentrification, performance économique – circuits courts de proximité – agriculture – recomposition sociale – gentrification rurale.

  • Richard Frédéric, Chevallier Marius, Dellier Julien et Lagarde Vincent« Circuits courts agroalimentaires de proximité en Limousin : performance économique et processus de gentrification rurale », Norois, 230 (1), p. 21-39. http://www.cairn.info.ezproxy.unilim.fr/article.php?ID_ARTICLE=NOR_230_0021.


  • Richard Frédéric, Dellier Julien et Tommasi Greta« Migration, environment and rural gentrification in the Limousin mountains », Revue de Géographie Alpine, 102 (4). (Nouveaux habitants. Dynamiques de repeuplement en zone de montagne). DOI : 10.4000/rga.2525. https://halshs.archives-ouvertes.fr/halshs-01118736.
    Mots-clés : Environnement, gentrification rurale, Migration, Montagne limousine, PNR Millevaches.

  • Richard Frédéric, Dellier Julien et Tommasi Greta« Migration, environnement et gentrification rurale en Montagne limousine », Journal of Alpine Research | Revue de géographie alpine, 102-4. http://rga.revues.org/2525.
    Résumé : Les dynamiques migratoires des espaces ruraux et/ou montagnards font l’objet de nombreuses recherches dont les différents appareillages conceptuels et méthodologiques relèvent de (sous)champs scientifiques ou disciplinaires distincts. Se distinguent, entre autres, les entrées par la population, les migrations d’aménités ou encore par la gentrification rurale (Smith, 1998 ; M. Phillips, 1993 ; Bryson et Wyckoff, 2010). C’est à travers le prisme de cette dernière que la contribution proposée vise à lire les dynamiques démographiques, socioculturelles et environnementales à l’œuvre dans la Montagne limousine. Une partie de la littérature anglo-saxonne portant sur la gentrification rurale a permis de souligner le rôle central de l’environnement et/ou de la nature à la fois en tant que représentations et cadre géographique dans les dynamiques migratoires et les processus de recomposition sociale susceptibles de produire une ou des formes de gentrification rurale, ou greentrication. Dans le détail, l’environnement agirait en amont de l’installation des migrants et les accompagnerait tout au long de leur parcours migratoire et résidentiel. Mais en aval de leur implantation, du fait même de leurs caractéristiques de gentrifieurs, c’est-à-dire de nouveaux résidents, acteurs de la gentrification, ces derniers agiraient pour modifier la ou les dimensions environnementales de leur cadre de vie et le faire ainsi tendre vers « l’idéal » qui les avait initialement attirés. En l’espèce, les enquêtes de terrain tendraient à indiquer que si ce cadre général est plutôt pertinent pour la Montagne limousine, il reste néanmoins nécessaire de préciser, d’une part la nature des gentrifieurs, lesquels pourraient éventuellement être qualifiés d’altergentrifieurs, et d’autre part, que leur impact est inégalement significatif au sein du PNR de Millevaches.
    Mots-clés : Environnement, gentrification rurale, Migration, Montagne limousine, PNR Millevaches.

  • Rouvellac Éric« La dissolution des terroirs et des territoires viticoles dans l’architecture des domaines viticoles », Sud Ouest Européen, n°36, p. 85-96. https://hal.archives-ouvertes.fr/hal-01230918.
    Résumé : Le terroir viticole est utilisé souvent comme un concept valise, où beaucoup d’acceptions peuvent voisiner, de l’agronomique au culturel. De cette confusion les acteurs vitivinicoles construisent des politiques de communication et du marketing autant sur de la réalité que du mythe. Ils fondent souvent cette communication sur l’histoire locale du territoire viticole, en voulant frapper l’imagination en inventant et en réinventant l’histoire des vignobles. Cette progression de la communication autour des terroirs et des territoires viticoles aboutit à des visions post modernes, très relativistes, du territoire, où la subjectivité se nourrit des symboles culturels dans le paysage et sur le bâti. A travers une approche de l’architecture de certains domaines de l’appellation viticole contrôlée Somontano (Espagne), de certains domaines du Nouveau Monde, et de bâtis iconoclastes comme entrée vitivinicole, nous nous sommes intéressés à la dissolution du terroir et du territoire dans la communication liée à l’architecture des domaines viticoles.
    Mots-clés : architecture de chais, communication, marketing, territoires viticoles, terroirs viticoles.


  • Saez Jérôme Lopez, Corona Christophe, Stoffel Markus et Berger Frédéric« Assessment of forested shallow landslide movements coupling tree ring records from stems and exposed roots », Géomorphologie : Relief. Processus. Environnement, 2/2014, p. 159-174. DOI : 10.4000/geomorphologie.10616. https://hal.archives-ouvertes.fr/hal-01131658.
    Résumé : The purpose of this study is to explore and illustrate the potential of exposed roots to reconstruct larger-scale landslide activity and thus to complement tree-ring data gathered from stems to reconstruct spatio-temporal patterns of landslide reactivation. Work was undertaken in a forested area of the Davids-Bas landslide, Barcelonnette (Southeastern French Alps) and based on growth disturbances (GD) from 48 stems and on anatomical changes (decrease of cell lumina) in 20 exposed root sections of heavily affected Mountain pine (Pinus uncinata Mill. ex Mirb.) trees growing on the scarps and upon the landslide body. A total of 95 GD and 20 anatomical changes were identified in the samples pointing to 7 movements of the landslide body since AD 1977. The study demonstrates that reconstructions of landslide reactivations obtained from exposed roots samples are not significantly different from those gathered from stems, but that the inclusion of exposed roots permits realization of frequency maps in sectors which could not be documented with classic dendrogeomorphic approaches focusing on tree-ring records from stems (scars, cracks). In addition, and even more importantly, the inclusion of exposed roots allowed assessment of the geomorphic evolution of the landslide at the local scale and to detect precursor signals of major reactivations in the form of crack widening before the main movement was registered in the tree stems. In that sense, the combined approach presented in this paper can be considered as a valuable tool for land-use planners and emergency cells in charge of forecasting future events and in protecting people and their assets from the negative effects of landslides.
    Mots-clés : Dendrogeomorphology, exposed root, French Alps, landslide.


  • Servera Vives Gabriel, Miras Yannick, Riera Mora Santiago, Julià Ramón, Allée Philippe, Orengo Hector A., Paradis-Grenouillet Sandrine et Maria Palet Josep« Tracing the land use history and vegetation dynamics in the Mont Lozère (Massif Central, France) during the last 2000 years: the interdisciplinary study case of Countrasts peat bog », Quaternary International, 353, p. 123-139. (Environmental History of European High Mountains). DOI : 10.1016/j.quaint.2013.10.048. https://hal.archives-ouvertes.fr/hal-01128665.
    Résumé : The Countrasts Bog (1400 m a.s.l.), located in the western part of the Mont Lozère medium mountain, has been the object of an interdisciplinary study combining multiproxy analyses which includes pollen, non-pollen palynomorphs (NPP), macrocharcoal particles, sedimentology and geochemistry, with archaeological and archaeobotanical data. The high temporal resolution of the palaeoenvironmental study, with an average resolution of 40 years between samples, allows us to trace the landscape dynamics for the last 2000 years at a micro-regional scale. During the Roman Imperial period (ca. 1st–3rd centuries AD) local agropastoral activities were moderate, whereas metallurgical activities developed in the region as attested by geochemical records. Later, during Late Antiquity and Early Medieval periods (ca. 3rd–10th centuries AD), agropastoral activities increased and human impact produced major changes in local mire dynamics with the replacement of birch wooded bogs by sedge communities. During the High Middle Ages (ca. 10th–13th centuries AD), a complex system of land uses was established, based on different activities including ore smelting, forestry and agropastoralism, attested by pollen, NPP and geochemistry data, as well as by archaeological, archaeobotanical and historical evidence. Since the Late Middle Ages (ca. 14th century AD), local metallurgical activities and forestry management decline have coincided with the expansion of grazing in uplands. This new land use favored the expansion of upland grasslands and heathlands and triggered the establishment of an open-landscape during the Early Modern Period (ca. 15th–18th centuries AD). At the end of the 19th century and the 20th century, agropastoral activities declined while reforestation was carried out.
    Mots-clés : land uses, Landscape evolution, mountain, Multiproxy, NPP, pollen.


  • Stoffel Markus et Corona Christophe« Dendroecological dating of geomorphic disturbance in trees », Tree-Ring Research, 70 (1), p. 3-20. DOI : 10.3959/1536-1098-70.1.3. https://hal.archives-ouvertes.fr/hal-01131659.
    Résumé : The initial employment of tree rings in geomorphic studies was simply as a dating tool and only rarely were other environmental information and records of damage contained within the tree exploited. However, these annually resolved tree-ring records also preserve valuable archives of past geomorphic processes on timescales of decades to centuries. As many of these processes are significant natural hazards, understanding their distribution, timing and controls provides crucial information that can assist in the prediction, mitigation and defense against these hazards and their effects on society. This contribution aims at presenting a proposal on the types of growth disturbances to be included in future work focusing on geomorphic disturbance, the intensity of reactions, and on the minimum requirements needed for growth disturbances to be considered in event histories. We present possibilities and limitations of dendrogeomorphic applications in geomorphic research and propose a range of techniques and approaches that may become standard practice in the analysis and understanding of earth-surface processes and related natural hazards in the future.
    Mots-clés : Dendrogeomorphology, earth-surface process, geomorphology, hydrogeomorphology, injury, reaction wood, resin duct, tracheid, vessel, Wood anatomy.


  • Trappmann Daniel, Stoffel Markus et Corona Christophe« Achieving a more realistic assessment of rockfall hazards by coupling three-dimensional process models and field-based tree-ring data », Earth Surface Processes and Landforms, 39 (114), p. 1866–1875. DOI : 10.1002/esp.3580. https://hal.archives-ouvertes.fr/hal-01131652.
    Résumé : Sound knowledge of the spatial and temporal patterns of rockfalls is fundamental for the management of this very common hazard in mountain environments. Process-based, three-dimensional simulation models are nowadays capable of reproducing the spatial distribution of rockfall occurrences with reasonable accuracy through the simulation of numerous individual trajectories on highly-resolved digital terrain models. At the same time, however, simulation models typically fail to quantify the ‘real’ frequency of rockfalls (in terms of return intervals). The analysis of impact scars on trees, in contrast, yields real rockfall frequencies, but trees may not be present at the location of interest and rare trajectories may not necessarily be captured due to the limited age of forest stands. In this article, we demonstrate that the coupling of modeling with tree-ring techniques may overcome the limitations inherent to both approaches. Based on the analysis of 64 cells (40 m × 40 m) of a rockfall slope located above a 1631-m long road section in the Swiss Alps, we illustrate results from 488 rockfalls detected in 1260 trees. We illustrate that tree impact data cannot only be used (i) to reconstruct the real frequency of rockfalls for individual cells, but that they also serve (ii) the calibration of the rockfall model Rockyfor3D, as well as (iii) the transformation of simulated trajectories into real frequencies. Calibrated simulation results are in good agreement with real rockfall frequencies and exhibit significant differences in rockfall activity between the cells (zones) along the road section. Real frequencies, expressed as rock passages per meter road section, also enable quantification and direct comparison of the hazard potential between the zones. The contribution provides an approach for hazard zoning procedures that complements traditional methods with a quantification of rockfall frequencies in terms of return intervals through a systematic inclusion of impact records in trees.
    Mots-clés : 3D rockfall simulation models, Dendrogeomorphology, hazard assessment, rockfall frequency, Tree ring.
2013

  • Alfonso Guy, Brunet-Gaston Véronique, Cabanis Manon, Caillat Pierre, Clémençon Bernard, Colombier-Gougouzian Aline, Rémy B et Wittman Alain« Les espaces de cuisine d’un édifice public ou collectif d’Augustonemetum/Clermont-Ferrand (Puy-de-Dôme). », Gallia, 70-1, p. 71-92. (Cuisine et Boulangerie en Gaule Romaine). https://hal.archives-ouvertes.fr/hal-01131006.
    Mots-clés : AUVERGNE, cuisine, romain.


  • Arbellay Estelle, Stoffel Markus et Decaulne Armelle« Dating of snow avalanches by means of wound-induced vessel anomalies in sub-arctic Betula pubescens », Boreas, 42 (3), p. 568-574. DOI : 10.1111/j.1502-3885.2012.00302.x. http://onlinelibrary.wiley.com/doi/10.1111/j.1502-3885.2012.00302.x/abstract.
    Résumé : Dendrogeomorphic research has long relied on scarred trees to reconstruct the frequency of mass-movement processes. Injuries have mostly been dated macroscopically by counting the tree rings formed after wounding. Tree-ring anatomical anomalies induced by cambial injury, in contrast, have only recently been recognized as proxy records of past events. We investigated 12 sub-arctic downy birch (Betula pubescens Ehrh.) trees scarred by snow avalanches in Norway and Iceland. Earlywood vessel lumina were measured for each tree in the xylem tissue bordering the scars. Seven successive rings were examined, namely two control rings laid down prior to wounding and five rings in the wound xylem. We provide evidence that snow-avalanche-induced wounding resulted in atypically narrow earlywood vessels over at least two years. Our data demonstrate that wound-associated vessel anomalies represent tangible markers of mass-movement processes, and as such make a viable tool for reconstructing past events. Similar dendrogeomorphic studies based on tree-ring anatomy can be readily conducted with other mass-movement processes, as well as with other broad-leaved tree species. Ultimately, this new approach will foster increment coring over more invasive sampling techniques.


  • Barbier Nicolas« La gouvernance conflictuelle relative à la cogestion des saumons dans le bassin du fleuve Columbia (États-Unis) », VertigO : La Revue Électronique en Sciences de l'Environnement. DOI : 10.4000/vertigo.14412. https://hal.archives-ouvertes.fr/hal-01225934.
    Résumé : Dans la portion états-unienne du bassin du Columbia, les populations de saumons sont cinq fois moins nombreuses qu’il y a 150 ans. Elles sont cogérées par des acteurs fédéraux, fédérés et tribaux afin de les restaurer. Dans cette région plus étendue que la France, l’État fédéral domine la gouvernance relative à la cogestion d’espèces de saumons en danger ou menacées. L’agence fédérale du NOAA Fisheries Service rédige les plans de restauration et les études biologiques programmatrices qui orientent les actions de terrain. Les acteurs de terrain fédérés et tribaux ont une multitude de tâches, de la réintroduction de populations locales à la restauration de zones ripariennes en passant par la gestion des écloseries ou le contrôle de la pêche. Parallèlement, une cour fédérale de l’État d’Oregon a le pouvoir de réorienter les plans et études fédéraux si ceux-ci ne sont pas conformes à l’Endangered Species Act votée par le Congrès des États-Unis en 1973. Au cours des années 2000, cette cour a notamment contribué à réduire l’impact létal des barrages sur les saumons. Si certaines populations locales de saumons ont été partiellement reconstituées, des problèmes majeurs ne sont pas résolus : les grands barrages continuent d’entraver la restauration globale, de même que les pollutions et les dégradations d’une partie de l’environnement des bassins hydrographiques. Des conflits entre groupes d’intérêts se poursuivent. Des groupes d’écologistes et de pêcheurs ainsi que des tribus indiennes réclament une restauration plus ambitieuse. Ils se heurtent à des intérêts industriels et agricoles majeurs généralement protégés par les États fédéral et fédérés. Ces deux acteurs gouvernementaux s’opposent au développement d’une partie des projets tribaux liés aux écloseries. L’adoption de la Déclaration onusienne sur les droits des peuples autochtones par l’Administration de Barack Obama en 2010 pourrait atténuer des différends et faire évoluer la gouvernance à l’étude.
    Mots-clés : bassin versant, cogestion, Columbia, conflit, fleuve, gouvernance, saumon.

  • Barbier Nicolas et Heude Jacques« Restauration d’écosystèmes aquatiques et ripariens dans le territoire autochtone des Indiens Nez Percé (Idaho, Oregon, Washington) », Revue du Nord, Hors-Série numéro 19. (Eaux de la vie : pour une histoire de la biodiversité des cours d'eau). https://hal.archives-ouvertes.fr/hal-01224617.
    Résumé : Le territoire autochtone de la tribu des Nez Percé est situé à cheval sur le centre-nord de l'Idaho, le nord-est de l'Oregon, le sud-est de l'État de Washington. Essentiellement montagneux, majoritai-rement couvert de forêts de conifères, il chevauche le centre-nord de l'Idaho ainsi que de petites portions du nord-est de l'Oregon et du sud-est de l'État de Washington (fig. 1). Ce territoire de 54 000 km 2 , faiblement peuplé (175 000 habitants en 2010), est inclus dans le bassin de la rivière Snake. La tribu fut dépossédée par les États-Unis de 98 % de la superficie de son territoire entre 1863 et 1900. Entre la fin XIX e siècle et les années 1960, elle assista, pratiquement impuissante, à la dégradation des écosystèmes aquatiques et ripa-riens dues à l'agriculture, aux industries, à l'urbanisa-tion et à des aménagements hydrauliques. À partir des années 1960 et d'une sensibilité accrue aux problèmes environnementaux 1 , des étapes juri-diques clés (grandes lois nationales de protection de la qualité de l'eau) et des seuils maxima de pollution, censés améliorer la qualité de l'eau, se sont succédés. Si certaines détériorations ont été atténuées, beaucoup d'autres se poursuivent actuellement. Leurs disparités spatiales sont marquées. Depuis 1990, plusieurs espèces de saumons sont classées dans la liste fédé-rale des espèces en danger. Dans ce cadre juridique,
    Mots-clés : écosystème, Idaho, milieu aquatique, Nez Percé, Oregon, pollution, Restauration écologique, Washington, zone riparienne.

  • Blanckaert K., Garcia X.-F., Steiger Johannes et Uijttewaal W.« Preface Ecohydraulics : linkages between hydraulics, morphodynamics and ecological processes in rivers. », Ecohydrology, 6 (4), p. 507-510. DOI : 10.1002/eco.1414. https://hal.archives-ouvertes.fr/hal-00877922.

  • Cabanis Manon et Marguerie Dominique« Les ressources en bois dans le bassin de Clermont-Ferrand du Néolithique à la période romaine d'après l'analyse dendro-anthracologique », Quaternaire, 24-2, p. 117-127. (Acte du colloque Q8, Clermont-Ferrand). https://hal.archives-ouvertes.fr/hal-01130981.
    Mots-clés : approvisionnement en bois, AUVERGNE, HOLOCENE.


  • Casado Ana, Hannah David, Peiry Jean-Luc et Campo Alicia« Influence of dam-induced hydrological regulation on summer water temperature: Sauce Grande River, Argentina. », Ecohydrology, 2013 (6), p. 523–535. DOI : 10.1002/eco.1375. https://hal.archives-ouvertes.fr/hal-01129395.
    Résumé : This study quantifies for the first time the influence of flow regulation on the river thermal behaviour of an ungauged basin located in central-eastern Argentina. A 30-day data set of continuous summer hourly data was assembled for eight water temperature gauging sites deployed along the main channel upstream and downstream from the impoundment. Analysis methods include descriptive statistics of daily temperature data, classification of diurnal regimes by relative differences in the ‘shape’ and the ‘magnitude’ of the thermographs (RSMC), and quantification of the climatic sensitivity of water temperature regimes using a sensitivity index. Results revealed that temporal fluctuations in water temperatures were linked to meteorological drivers; however, spatial variability in the shape and the magnitude of the thermographs revealed the effects of the dam in regulating river thermal behaviour downstream. Water temperatures immediately below the dam were reduced notably; diurnal cycles were reduced in magnitude, delayed in timing, and revealed overall climatic insensitivity and high temporal stability in regime shape. Dam effects persisted along the 15-km stretch monitored, although declined in the downstream direction. These findings provide new scientific understanding about the river water quality and inform river management about potential shifts in summer water temperature with great implications for the diversity and lifecycles of Neotropical river fauna. The use of the RSMC and sensitivity index approaches in water temperature assessment is novel and has wider applicability for quantifying river thermal regimes and their sensitivity to drivers of change over a range of temporal and spatial scales.
    Mots-clés : flow regulation, regime shape and magnitude classification (RSMC), river water temperature, sensitivity index (SI), thermographes, ungauged basins.

  • Chevalier Emilie et Guadagno Eleonora« Tracing Social inequalities in Environementally-induced Migration, Colloque international, Bielefeld, du 9 au 13 décembre 2012. Compte-rendu par Émilie Chevalier & Eleonora Guadagno », E-Migrinter, 10, p. 85-90. https://hal.archives-ouvertes.fr/hal-00929772.
    Mots-clés : environmental, Migration.


  • Chevallier Marius« La structure coopérative, garante de l'entreprise comme institution », Revue Française de Socio-Economie, 12, p. 231-242. DOI : 10.3917/rfse.012.0231. https://hal.archives-ouvertes.fr/hal-00921353.
    Mots-clés : connaissances tacites, coopérative, cooperatives, économie institutionnaliste, institutionalist economics, représentations, stabilité, stability, tacit knowledge.
  • Chevallier Marius« Les circuits courts, une voie rémunératrice mais risquée », Agreste Limousin, 99, p. 1-4.

  • Chevallier Marius« Les circuits courts, une voie rémunératrice mais risquée », Agreste Limousin, 99, p. 1-4. https://halshs.archives-ouvertes.fr/halshs-00933572.
    Résumé : Les exploitations agricoles en bovin viande commercialisant en circuits courts dégagent un revenu supérieur en moyenne à celui de l'ensemble des producteurs spécialisés du Limousin. Toutefois, s'il est possible d'atteindre des revenus nettement supérieurs, le risque d'obtenir des résultats inférieurs aux performances hors circuits courts n'est pas négligeable. Les circuits courts permettent ainsi de conserver plus de revenu sur le siège de l'exploitation, donc en milieu rural. Mais ils ne peuvent constituer une stratégie équitable de développement local que si un accompagnement est proposé aux exploitants qui souhaitent adopter ce débouché.
    Mots-clés : circuits de proximité agroalimentaires, performance économique.

  • Chevallier Marius« L'hétérogénéité des circuits courts : un défi pour le soutien institutionnel », Agreste Limousin, 96, p. 1-4. https://halshs.archives-ouvertes.fr/halshs-00933589.
    Résumé : Les circuits courts bénéficient d'un intérêt institutionnel croissant, pour autant l'hétérogénéité des pratiques constitue un défi à ce soutien. En particulier, la proximité relationnelle qui caractérise les circuits courts en Limousin ne serait pas un phénomène passager lié à une dynamique d'émergence mais une propriété durable qui induit un mode d'accompagnement spécifique. Cet accompagnement se caractérise par un recours plus important à la formation par les pairs et un rôle croissant des politiques publiques à l'échelon local.
    Mots-clés : circuits de proximité agroalimentaire, politiques publiques.


  • Chevallier Marius« Stabilité et expérience : des atouts coopératifs », Revue Internationale de l'Economie Sociale, RECMA, 327, p. 63-74. DOI : 10.7202/1015150ar. https://halshs.archives-ouvertes.fr/halshs-00933560.
    Résumé : La stratégie contemporaine des entreprises et du mouvement coopératif et mutualiste consiste à affirmer qu'elles se caractérisent par des valeurs alternatives. Cette stratégie comporte des faiblesses dans la mesure où il est difficile d'observer l'impact de telles valeurs dans les principaux secteurs d'activités des coopératives et mutuelles (industrie agro-alimentaire, commerce en gros, banque, assurance). En revenant aux origines des coopératives, on peut défendre l'hypothèse que les spécificités de ces entreprises résident plutôt dans des règles statutaires qui constituent des garde-fous à l'emprise des forces du marché. Alors que le marché valorise la réactivité et l'attractivité des travailleurs qualifiés, les coopératives et mutuelles sont plutôt caractérisées par la stabilité et la capacité à créer et exploiter des compétences tacites et informelles adaptées à leurs contextes spécifiques. Or, cette logique marchande constitue le cadre d'analyse dominant y compris pour les parties prenantes des coopératives : les individus ont " naturellement " tendance à puiser leurs solutions dans ce référentiel et il est donc nécessaire de bénéficier de garde-fous qui préservent de ce référentiel. Il s'agit alors de s'affranchir du cadre d'analyse dominant pour penser les coopératives, plutôt qu'y puiser des solutions qui renforcent les dynamiques de banalisation.
    Mots-clés : ancienneté, connaissances expérientielles, coopérative, institution, lenteur, stabilité.
  • Chevallier Marius« L’hétérogénéité des circuits courts : un défi pour le soutien institutionnel », Agreste Limousin, 96, p. 1-4.

  • Corenblit Dov, Julien F., Steiger Johannes, Darrozes J. et Mialet B.« High shell deposition of the invasive clam Corbicula fluminea (Müller, 1774) (Bivalvia : Corbiculidae) on alluvial bars: exploratory investigations and biogeomorphological research perspectives », Géomorphologie : Relief, Processus, Environnement, 2, p. 153-164. https://hal.archives-ouvertes.fr/hal-00877941.
    Mots-clés : Corbicula, fluminea.


  • Corona Christophe, Trappmann Daniel et Stoffel Markus« Parameterization of rockfall source areas and magnitudes with ecological recorders: When disturbances in trees serve the calibration and validation of simulation runs », Geomorphology, 202, p. 33-42. DOI : 10.1016/j.geomorph.2013.02.001. http://linkinghub.elsevier.com/retrieve/pii/S0169555X1300072X.


  • Cunill Raquel, Soriano Joan Manuel, Bal Marie-Claude, Albert Pèlachs, Rodriguez Josep Manel et Pérez-Obiol Ramon« Holocene high-altitude vegetation dynamics in the Pyrenees: a pedoanthracology contribution to an interdisciplinary approach », Quaternary International, 289, p. 60-70. DOI : 10.1016/j.quaint.2012.04.041. https://hal-unilim.archives-ouvertes.fr/hal-01126746.
    Résumé : Using an interdisciplinary methodology based on pedoanthracology, palynology and sedimentary charcoals, landscape transformation in the Pyrenees mountains during the Holocene is analyzed, with special attention to altitudinal variation in the treeline. The data sources were eight soil profiles on a transect at 2000e2600 m a.s.l. and a sedimentary record extracted from a very nearby peat bog at 2247 m a.s.l. The combination of three different proxies permits a more viable and qualitatively complementary data set, making it possible to better interpret the vegetation dynamic in this space through the Holocene. Analysis of the data showed that the Pyrenees landscape has undergone important changes during this period. The changing treeline is a good example. There is evidence of the decisive role of fire in the configuration of this landscape. Finally, this study shows that herding and agricultural uses over thousands of years in the study area have had a determining influence on the current configuration of the territory, equal to or more important than climatic factors.
    Mots-clés : Pedoanthracology.

  • Cuven Stéphanie, Paris Raphaël, Falvard Simon, Miot-Noirault Elisabeth, Benbakkar Mhammed, Schneider Jean-Luc et Billy Isabelle« High-resolution analysis of a tsunami deposit: case-study from the 1755 Lisbon tsunami in southwestern Spain », Marine Geology, 337, p. 98-111. https://hal.archives-ouvertes.fr/hal-00822081.

  • Davis B., Zanon M., Collins P., Mauri A., Bakker J., Barboni D., Barthelmes A., Beaudoin C., Bjune A.E., Bozilova E., Bradshaw R.H.W., Brayshay B.A., Brewer S., Brugiapaglia E., Bunting J., Connor A.E., De Beaulieu Jacques-Louis, Edwards K., Ejarque Ana, Fall P., Florenzano A., Fyfe R., Galop Didier, Giardini M., Giesecke T., Grant M.J., Guiot J., Jahns S., Jankovska V., Juggins S., Kahrman M., Karpinska-Kolaczek M., Kolaczek P., Kühl N., Lapteva E.G., Leroy S.A.G., Leydet M., Lopez-Saez J.A., Masi A., Meltsov V., Mercuri A.M., Miras Yannick, Mitchell F.J.G., Morris J.L., Naughton F., Nielsen A.B., Novenko E., Odgaard B., Ortu Elena, Overballe-Petersen M.V., Pardoe H.S., Peglar S.M., Pidek I.A., Sadori L., Seppä H., Severova E., Shaw H., Swieta-Musznicka J., Theuerkauf M., Tonkov S., Veski S., Knaap WO, Leeuwen JFN, Woodbridge J., Zimny M. et Kaplan J.O.« The European Modern Pollen Database (EMPD) project », Vegetation History and Archaeobotany, 22 (6), p. 521-530. DOI : 10.1007/s00334-012-0388-5.


  • Decaulne Armelle, Sæmundsson Thorsteinn et Eggertsson Ólafur« A multi-scale resolution of snow-avalanche activity based on geomorphological investigations at Fnjóskadalur, northern Iceland », Polar Record, 49 (03), p. 220–229. DOI : 10.1017/S0032247412000605. http://journals.cambridge.org/article_S0032247412000605.
    Résumé : ABSTRACT The article describes investigations that highlight snow-avalanche events that have not been reported in historical records. While historical sources are most often the basis for all natural hazard and risk research, alternative methods based on geomorphic investigations are often neglected. Here, we emphasise the use of geomorphic evidence to improve our knowledge of the maximum runout distance reached by snow avalanches as well as the frequency of the events. Investigations were carried out in remote, avalanche-prone areas, where the geomorphic evidence has not been disturbed or removed. Dendrogeomorphic investigations supply annual resolved records of avalanche winters up to the age of the investigated tree stand: over 120 years in northern Iceland. The study of snow-avalanche transported debris may be used to map the extent of the potential snow-avalanche deposition zone, and offer relative dating on a secular scale; stratigraphic profiles do provide results on long timescales, but only provide relative dating. The article discusses the relevance of each method, and concludes that the combination of the three methods can improve the common risk-mitigation approach based on historical records.

  • Defive Emmanuelle« Géologie et déterminisme », Cahier de Mémoire d'Ardèche et temps présent, 120, p. 7 p. https://hal.archives-ouvertes.fr/hal-01131001.
    Résumé : Le déterminisme est un mode de raisonnement établissant un lien de causalité systématique et à sens unique entre un fait et la ou les causes à l’origine de ce fait. Ainsi, dans toute circonstance où la cause est avérée, le fait doit se produire. A l’inverse, l’absence de la cause interdit l’existence du fait. Il ne peut y avoir aucun hasard. On parle de déterminisme physique ou naturel dans le cadre des relations entre l’homme, les sociétés humaines et leur environnement naturel. La discipline scientifique qui a été la plus marquée par les débats autour du déterminisme physique est sans conteste la géographie, dont l’objet est de comprendre les modalités et les facteurs de l’inscription de l’homme et de ses activités à la surface de la terre et la manière dont en naissent des territoires. C’est sa position d’interface, dont le compas a certes bougé depuis l’émergence de la géographie au 19e siècle, qui explique l’importance des débats qui n’ont cessé d’animer la discipline relativement à la place à accorder au milieu physique, à la nature dans l’explication des faits humains. Comprendre ces débats et tenter de se positionner par rapport à cette question suppose tout d’abord de les replacer dans leur contexte historique, avant de montrer la complexité et l’actualité de cette question. Pour cette introduction au numéro spécial de la revue Mémoire d’Ardèche et Temps Présent consacré à la géologie ardéchoise, nous avons choisi nos exemples dans une acception très large de la géologie, voire au-delà du champ de cette discipline pour englober les diverses composantes naturelles de l’environnement qui forment système, et dans le but premier de faire saisir l’étroit entremêlement des causes, naturelles et anthropiques, qui régissent l’organisation et la dynamique de l’espace des sociétés.
    Mots-clés : determinism, déterminisme, géographie, Geography, geology, sciences de la terre.

  • Defive Emmanuelle« Response of water–sediment system in upland catchment to Lateglacial and Holocene environmental fluctuations in a temperate highland context: first results from the Velay (south-eastern Massif Central, France) », Quaternaire, 24 (4), p. 461-476. https://hal.archives-ouvertes.fr/hal-01130985.
    Mots-clés : French Massif Central, Géoarchéologie, Geoarcheology, HOLOCENE.

  • Delay Etienne« Du paysage au terroir viticole de forte pente : à la recherche des leviers du management territorial », Projet de paysage, 9, p. 1-18. http://www.projetsdepaysage.fr/fr/du_paysage_au_terroir_viticole_de_forte_pente_a_la_recherche_des_leviers_du_management_territorial.
    Mots-clés : forte pente, montagne, paysage, systèmes multi-agents, vignoble.
  • Delay Etienne, Bourgoin J et Zottele F« Impact of cooperation on vineyards mountain landscape », Ciência e técnica vitivinicola, 28 (1).

  • Delay Etienne, Bourgoin Jérémy et Zottele Fabio« LES CONSÉQUENCES DE LA COOPÉRATION SUR LES PAYSAGES VITICOLES DE MONTAGNE », Ciência e técnica vitivinicola, 28 (1), p. 30-43. https://hal.archives-ouvertes.fr/hal-00920082.
    Mots-clés : Agent based modeling, coopérative, Landscape, spatial behavior, systèmes multi-agents, viticulture.

  • Delay Etienne, Zottele Fabio, Quenol H et Deros G.« LA MONTAGNE : UNE VOIE D'ADAPTATION AU CHANGEMENT CLIMATIQUE ? », Ciência e técnica vitivinicola, 28 (1), p. 40-56. https://hal.archives-ouvertes.fr/hal-00920102.


  • Dellier Julien, Rouvellac Éric et Guyot Sylvain« Le vignoble sud-africain dans l'ère post-apartheid, entre transformation et continuité », EchoGéo, 23, p. 13343. DOI : 10.4000/echogeo.13343. https://hal.archives-ouvertes.fr/hal-00927742.
    Mots-clés : AFRIQUE DU SUD, post-apartheid, South-Africa, vignoble, vineyard.

  • Dellier Julien, Rouvellac Éric et Guyot Sylvain« Le vignoble sud-africain dans l'ère post-apartheid, entre transformation et continuité », EchoGéo, 23, p. 1-15. https://hal.archives-ouvertes.fr/hal-00933456.
    Mots-clés : AFRIQUE DU SUD, post-apartheid, South-Africa, vignoble, vineyard.


  • Delzor Aurélie, Marin Benoit, Boumédiène Farid, Preux Pierre-Marie et Couratier Philippe« BMAALS: A French national project searching for a link between amyotrophic lateral sclerosis and the neurotoxic amino acid L-BMAA. », Amyotroph Lateral Scler Frontotemporal Degener. DOI : 10.3109/21678421.2013.837933. https://hal-unilim.archives-ouvertes.fr/hal-00925791.

  • Ferdière Alain, Trintignac Alain, Belingard Christelle, Hallavant Charlotte, Marot Emmanuel, Poitevin Grégory, Poupon Frédéric et Sternberg Myriam« La cuisine d’une domus de Javols/Anderitum (Lozère), chef-lieu de cité des Gabales », Gallia, 70 (1), p. 39-70. (Cuisines et boulangeries en Gaule romaine). https://hal-unilim.archives-ouvertes.fr/hal-01126736.
    Résumé : Dans le cadre du programme de recherche concernant le site de Javols/Anderitum, capitale de cité des Gabales à l’époque romaine, une domus à été quasi exhaustivement fouillée. Elle est dotée, sans doute vers la fin du Ier s. apr. J.-C., d’une pièce de cuisine qui évolue, avant d’être détruite, jusqu’au début du IIIe s., avec un équipement assez important (3 fours). Sa fouille, l’étude de ses structures puis celle des restes céramiques et bioarchéologiques (anthracologie, carpologie, archéozoologie et ichtyologie) permettent d’approcher son fonctionnement, et une part de l’alimentation d’une domus aisée de cette ville romaine de moyenne montagne.
    Mots-clés : anthracologie, Archéozoologie, carpologie, Céramologie, dendrologie, données bioarchéologiques, four culinaire, ichtyologie., vaisselle.

  • Ferrier Le Bouëdic M.C., Gaillard A., Cayrol J., Vernet Gérard et D'Incan M.« « Dermite des Téphras » : nouvelle maladie à caractère professionnel », Annales de Dermatologie et de Vénéréologie, 140 (12S1), p. 443. DOI : 10.1016/j.annder.2013.09.188.

  • García Álvarez Salvia, Bleda Marco Estefanía, Castillo García Francisco Javier et Cuerva Jimeno Macarena« The opinion of professionals on incorporating portable technological devices in classrooms », Revista de Educación a Distancia, 39, p. http://www.um.es/ead/red/39. https://hal.archives-ouvertes.fr/hal-01126745.
    Mots-clés : consulta a expertos, educación secundaria, exp ert consultation, formación del profesorado, ICT, mobile media technology, secondary education, soportes tecnológicos portátiles, teacher training, TIC.
  • Bellavia, V., Braguier, S., Pillard-Jude, C. et Wiethold, J.« La cuisine d’une maison de maître du Haut-Empire à Grand (Vosges) », Gallia, 70 (1), p. 97-112. (Cuisines et boulangeries en Gaule romaine).
    Mots-clés : anthracologie, Lorraine, villa.

  • Glandus Lise-Marie et Beltrando Gérard« Les déplacements urbains et la pollution de l’air dans des villes intermédiaires : enjeux politiques et environnementaux », Norois -Poitiers-, 226, p. p.25-40. https://hal.archives-ouvertes.fr/hal-01234102.
    Résumé : Les déplacements quotidiens en voiture représentent aujourd’hui la principale cause de pollution atmosphérique en milieu urbain. Ce problème, particulièrement présent dans les très grandes villes, concerne également – mais dans une moindre mesure – les agglomérations intermédiaires, à l’image de La Rochelle, Limoges et Clermont-Ferrand. Celles-ci sont alors amenées à remettre en question l’organisation des espaces urbains, encore fortement centrée sur l’usage du véhicule particulier, par le biais des Plans de Déplacements Urbains. Au-delà de la législation nationale, l’analyse des actions locales révèle des inégalités dans la prise en compte de l’environnement et de l’aménagement urbain, notamment en termes d’évolution des réseaux de transports alternatifs à la voiture, mais aussi des écarts entre les projets et les réalisations concrètes. Des limites peuvent alors être mises en avant, qu’elles dépendent des échelles d’élaboration des politiques, des relations entre les différents acteurs, de l’intérêt accordé à la pollution de l’air ou des volontés d’implication.
    Mots-clés : agglomération intermédiaire, aménagements urbains, mobilités quotidiennes, périurbanisation, pollution atmosphérique, transport collectif.

  • Guyot Sylvain« La construcción territorial de cabezas de puente antárticas rivales: Ushuaia (Argentina) y Punta Arenas (Chile) », Revista Transporte y Territorio, 9, p. 11-38. https://hal.archives-ouvertes.fr/hal-00956746.

  • Laraque Alain, Castellanos B., Steiger Johannes, Lopez J.L., Pandi A., Rodriguez M., Rosales J., Adèle Georges, Perez J. et Lagane C.« A comparison of the suspended and dissolved matter dynamics of two large inter-tropical rivers draining into the Atlantic Ocean : the Congo and the Orinoco », Hydrological Processes, 27 (15), p. 2153-2170. DOI : 10.1002/hyp.9776. https://hal.archives-ouvertes.fr/hal-00879201.


  • Laraque Alain, Moquet Jean-Sébastien, Alkattan Rana, Steiger Johannes, Mora Abrahan, Adèle Georges, Castellanos Bartolo, Lagane Christèle, Lopez José Luis, Perez Jesus, Rodriguez Militza et Rosales Judith« Seasonal variability of total dissolved fluxes and origin of major dissolved elements within a large tropical river: The Orinoco, Venezuela », Journal of South American Earth Sciences, 44, p. 4-17. (Hydrology, Geochemistry and Dynamic of South American Great River Systems). DOI : 10.1016/j.jsames.2012.12.011. http://www.sciencedirect.com/science/article/pii/S0895981113000084.
    Résumé : Seasonal variations of total dissolved fluxes of the lower Orinoco River were calculated taking into account four complete hydrological cycles during a five-year period (2005–2010). The modern concentrations of total dissolved solids (TDS) of the Orinoco surface waters were compared with data collected during the second half of the last century published in the literature. This comparison leads to the conclusion that chemical composition did not evolve significantly at least over the last thirty to forty years. Surface waters of the Orinoco at Ciudad Bolivar are between bicarbonated calcic and bicarbonated mixed. In comparison to mean values of concentrations of total dissolved solids (TDS) of world river surface waters (89.2 mg l−1), the Orinoco River at Ciudad Bolivar presents mainly low mineralized surface waters (2005-10: TDS 30 mg l−1). The TDS fluxes passing at this station in direction to the Atlantic Ocean between 2005 and 2010 were estimated at 30 × 106 t yr−1, i.e. 36 t km−2 yr−1. It was observed that the seasonal variations (dry season vs wet season) of total dissolved fluxes (TDS and dissolved organic carbon (DOC)) are mainly controlled by discharge variations. Two groups of elements have been defined from dilution curves and molar ratio diagrams. Ca2+, Mg2+, HCO 3 − , Cl− and Na+ mainly come from the same geographic and lithologic area, the Andes. K+ and SiO2 essentially come from the Llanos and the Guayana Shield. These findings are important for understanding fundamental geochemical processes within the Orinoco River basin, but also as a baseline study in the perspective of the development of numerous mining activities related with aluminum and steel industries; and the plans of the Venezuelan government to construct new fluvial ports on the lower Orinoco for the transport of hydrocarbons.
    Mots-clés : Hydrochemistry, Hydrology, Orinoco River, Total dissolved fluxes.


  • Lavrieux Marlène, Disnar Jean-Robert, Chapron Emmanuel, Bréheret Jean-Gabriel, Jacob Jérémy, Miras Yannick, Reyss Jean-Louis, Andrieu-Ponel Valérie et Arnaud Fabien« 6,700-year sedimentary record of climatic and anthropic signals in Lake Aydat (French Massif Central) », The Holocene, 23 (9), p. 1317-1328. DOI : 10.1177/0959683613484616. https://hal-insu.archives-ouvertes.fr/insu-00781618.
    Résumé : A 19-meters-long sedimentary record that was retrieved in Lake Aydat (French Massif Central) covers the last 6700 yrs at a high-resolution. A multi-proxy approach (density, magnetic susceptibility, XRF, Rock-Eval analyses, pollen and non-pollen palynomorphs analyses and historical archives study) was used to characterise and tentatively propose a model of the sedimentation. The important deposition rate results from the narrow and incised fluvial valley dammed by a lava flow ca. 8550 years ago. Two contrasted periods of sedimentation (6700±200 - 3180±90 cal. BP, and 1770±60 cal. BP- now) are characterized. The lower unit (mid-Holocene) displays a fine and regular lamination and holds a single, major, flood deposit. This unit is capped by an erosive mass wasting deposit triggered ca. 1770±60 cal. BP. The upper unit (late-Holocene) is made of organic rich and fine grained faintly laminated sediment, with numerous interbedded flood deposits (56 events) and layers resulting from blooms of diatoms. The sedimentation was principally controlled by climatic forcings (solar activity) until ca. 1100 cal. BP, accompanied by detritic events linked to human activities around the lake. Then, a more detrital input attested by numerous and recurrent flood deposits can be linked to the intensification of a persistent anthropogenic impact on the catchment. Two phases of lake eutrophication are highlighted: a first phase between 1200-1130 cal. BP, as a result of increased anthropogenic pressure, and the current phase that could have started ca. 150 cal. BP.
    Mots-clés : Anthropogenic activities, Climate, Detritism, French Massif Central, HOLOCENE, Lake sediments.

  • Lereboullet Anne-Laure, Beltrando Gérard, Bardsley Douglas K. et Rouvellac Éric« Study from the Mediterranean wine industry in France and Australia », Regional Environnemental Change, 13 (2). https://hal.archives-ouvertes.fr/hal-01234054.
    Mots-clés : Australie, changement climatique, France, industrie viticole, variation climatique.

  • Lereboullet Anne-Laure, Beltrando Gérard, Douglas K. Bardsley et Rouvellac Éric« The viticultural system and climate change: coping with long-term trends in temperature and rainfall in Roussillon, France », Regional Environmental Change, 13 (2), p. 1-18. https://hal.archives-ouvertes.fr/hal-00933471.
    Résumé : Climate change could put at risk viticultural areas situated at the hotter margins of Vitis vinifera growth climatic range. We focus on two such regions with a Mediterranean climate (CSb type in Köppen classification): Côtes-du-Roussillon in southern France and McLaren Vale in South Australia. They share a relatively similar recent climate evolution. Based on data from two synoptic weather stations, Perpignan (France) and Adelaide (Australia), with daily time series running from 1956 to 2010, we identified changes in temperatures and precipitation patterns, especially an increase of maximum temperatures, of the Huglin Index and Cool Night Index. According to climate models (data from DRIAS project in France, CSIRO Mk3.5 model in Australia) this tendency is likely to continue in the future. In these two regions, two red varieties are mainly grown: Grenache and Shiraz, as they are relatively well suited to Mediterranean climate and to market demand in volatile global markets. Based on twenty in-depth semi-structured interviews in both regions, we identified that vineyard management practices -current and planned for a near future, are based in their vast majority on economical considerations. Concerns of producers include: maintaining income and market position by producing optimal yields, a constant wine style and quality and a diversified offer. In addition, producers feel they have to deal with an increasing uncertainty regarding climate variability, confirmed by climate data. Adaptation strategies of producers to various types of changes, including climate change, take into account a multiplicity of factors, in which climate change is often not the main concern. Two opposite systems of legislation and cultural traditions in the two regions also make the choice and implementation of adaptation strategies very different. Thus the sensitivity of viticultural systems to climate change depends strongly on non-climatic factors.
    Mots-clés : Adaptation, climate change, Mediterranean climate, Social-ecological system, viticulture.
  • Liard Morgane« Le versant du Petit Paulmy, approche géoarchéologique. », Revue archéologique du Centre de la France, 46, p. 37-71. (Supplément à la Revue Archéologique du Centre de la France).
  • Linton Jamie et Budds Jessica« The Hydrosocial Cycle: Defining and Mobilizing a Relational-Dialectical Approach to Water », Geoforum.
  • Linton Jamie et Hall Noah« “The Great Lakes” », éd. par E. S. Norman, A. Cohen, et K. J. Bakker, Water Without Borders: Canada, the US, and Transboundary Waters. (University of Toronto).


  • Masseret Estelle, Banack Sandra, Boumédiène Farid, Abadie Eric, Brient Luc, Pernet Fabrice, Juntas-Morales Raoul, Pageot Nicolas, Metcalf James, Cox Paul et Camu William« Dietary BMAA Exposure in an Amyotrophic Lateral Sclerosis Cluster from Southern France. », PLoS ONE, 8 (12), p. e83406. DOI : 10.1371/journal.pone.0083406. https://hal-unilim.archives-ouvertes.fr/hal-00933857.
    Résumé : BACKGROUND: Dietary exposure to the cyanotoxin BMAA is suspected to be the cause of amyotrophic lateral sclerosis in the Western Pacific Islands. In Europe and North America, this toxin has been identified in the marine environment of amyotrophic lateral sclerosis clusters but, to date, only few dietary exposures have been described. OBJECTIVES: We aimed at identifying cluster(s) of amyotrophic lateral sclerosis in the Hérault district, a coastal district from Southern France, and to search, in the identified area(s), for the existence of a potential dietary source of BMAA. METHODS: A spatio-temporal cluster analysis was performed in the district, considering all incident amyotrophic lateral sclerosis cases identified from 1994 to 2009 by our expert center. We investigated the cluster area with serial collections of oysters and mussels that were subsequently analyzed blind for BMAA concentrations. RESULTS: We found one significant amyotrophic lateral sclerosis cluster (p = 0.0024), surrounding the Thau lagoon, the most important area of shellfish production and consumption along the French Mediterranean coast. BMAA was identified in mussels (1.8 µg/g to 6.0 µg/g) and oysters (0.6 µg/g to 1.6 µg/g). The highest concentrations of BMAA were measured during summer when the highest picocyanobacteria abundances were recorded. CONCLUSIONS: While it is not possible to ascertain a direct link between shellfish consumption and the existence of this ALS cluster, these results add new data to the potential association of BMAA with sporadic amyotrophic lateral sclerosis, one of the most severe neurodegenerative disorder.


  • Mercier Denis, Cossart Etienne, Decaulne Armelle, Feuillet Thierry, Jónsson Helgi Páll et Sæmundsson Þorsteinn« The Höfðahólar rock avalanche (sturzström): Chronological constraint of paraglacial landsliding on an Icelandic hillslope », The Holocene, 23 (3), p. 432-446. DOI : 10.1177/0959683612463104. http://hol.sagepub.com/content/23/3/432.
    Résumé : The Höfðahólar rock avalanche, in the Skagafjörður area of northern Iceland, was investigated on the basis of a geomorphological analysis of its landforms and close surrounding environment. Thanks to sound chronological constraints (14C dating from birch remnants in peat areas that developed within depressions over the chaotic rock-avalanche deposit, tephrochronological sequences resulting from subsequent ash fallouts over the deposit, calibration of an age–depth model of peats and previously dated raised beaches), we define the rock-avalanche implementation with a wider timeframe between 10,200 and 7975 cal. yr BP and with a narrower frame between 9000 and 8195 ± 45 cal. yr BP. Such a well constrained timing proposes one of the most precise datings of an early-Holocene major slope failure in Iceland. This result fits well in the known chronology of the deglaciation in this area and in the prevailing Icelandic theory of a generalized phase of landsliding that occurred shortly after the deglaciation of the area. The main driver for the rock-avalanche occurrence is associated to a paraglacial origin; glacio-isostatic rebound, associated to rockwall debuttressing, is thought to be the main factor in the genesis of this Boreal major disequilibrium.
    Mots-clés : Deglaciation, early Holocene, glacio-isostatic rebound, Iceland, landsliding, paraglacial.

  • Miras Yannick, Guenet P., Cruz Frédéric, Garcia Jean-Pierre, Petit Christophe et Guillaumet Jean-Paul« Gestion des ressources naturelles dans le Pays de Tulle : impacts paysagers et histoire du châtaignier (Castanea sativa Mill.) de l'Antiquité à la Renaissance d'après la palynologie », Aquitania, 39, p. 311-330. https://hal.archives-ouvertes.fr/hal-00867980.
    Résumé : Cet article présente les résultats paléoenvironnementaux des premières analyses palynologiques et sédimentologiques menées dans le pays de Tulle (Mars, Gimel-les-Cascades, Corrèze, France). Elles se fondent sur le croisement de différents indicateurs biotiques (grains de pollen, microfossiles non-polliniques) et sédimentaires. Neuf datations radiocarbone ont été réalisées. Cette recherche décrit les dynamiques des paysages végétaux depuis l'Antiquité sous l'action de leurs facteurs de contrôle climatiques et anthropiques. Elle analyse en quoi ces changements paysagers traduisent des gestions diversifiées des ressources végétales dont la culture du châtaignier (Castanea sativa Mill.). Arbre emblématique en Limousin, le châtaignier constitue un marqueur paysager et territorial mais dont les connotations ont souvent été contradictoires et fluctuantes en 2000 ans d'histoire.
    Mots-clés : Castanea sativa Mill, Castanea sativa Mill., Corrèze, histoire des activités humaines, micro-fossiles non polliniques, palynologie.

  • Miras Yannick et Guenet Pascal« Une histoire plurimillénaire des paysages du Cézallier et ses liens avec les activités agrosylvopastorales depuis le Néolithique à partir de l'analyse pollinique de la tourbière de la Borie (1170 m, Saint-Saturnin, Cantal, France). », Revue d'Auvergne, In F. Trément (dir.) : ” Les arvernes et leurs voisins du Massif central à l'époque romaine. (1), p. 481-497. https://hal.archives-ouvertes.fr/hal-00802132.

  • Miras Yannick, Lavrieux Marlène et Flórez Marta« Holocene ecological trajectories in lake and wetland systems (Auvergne, France): a palaeoenvironmental contribution for a better assessment of ecosystem and land use's viability in management strategies », Annali di Botanica, 3, p. 127-133. https://hal.archives-ouvertes.fr/hal-00824420.
    Résumé : Multi-proxy palaeoenvironmental studies are very important for the development of sustainable management strategies for ecosystems and modern landscapes. Analysing the relationship between societies, climate and environments through time, these studies contribute to define adequate policies and strategies for socio-environmental management, protection and legacy. Two complementary case studies- Aydat lake and Espinasse fen - from the south of the Chaîne des Puys (Auvergne, Massif Central, France) are presented. The analysis of these sedimentological records (both lacustrine and peat) follows a multi-proxy approach combining abiotic and biotic palaeoindicators (density, magnetic susceptibility, X-Ray Fluorescence spectrometry, Rock-Eval, pollen, non-pollen palynomorphs, molecular biomarkers). Aydat lake and Espinasse fen analyses were performed following a high spatio-temporal resolution. Results underline that long-term models of detrital input and eutrophication correspond to complex patterns with early and recurrent phases of human-induced ecological disturbances. They also evidence the existence of diversified long-term land use systems (deforestation, grazing, agriculture, hemp culture and retting) that provide fresh insights into the understanding of present-day mountain environments. This history between diversified human activities and hydrosystems responses must be taken into account for the construction of accurate retrospective and prospective model simulations of hydrosystem functioning.
    Mots-clés : AUVERGNE, DETRITAL INPUT, EUTROPHICATION, HOLOCENE, HUMAN IMPACT, HYDROSYSTEMS, SOCIO-ENVIRONMENTAL VIABILITIES.

  • Paris Raphael, Kelfoun Karim et Giachetti Thomas« Marine conglomerate and reef megaclasts at Mauritius Island (Indian Ocean): evidences of a tsunami generated by a flank collapse of Piton de la Fournaise volcano, Réunion Island? », Science of tsunami hazards, 32 (4), p. 281-291. https://hal.archives-ouvertes.fr/hal-00960211.


  • Roussel Erwan et André Marie-Françoise« Quantitative assessment of pre- and post-restoration weathering rates of limestone Mayan temples (Uxmal, Yucatán) », Geografia Fisica e Dinamica Quaternaria, 36, p. 169-179. DOI : 10.4461/GFDQ.2013.36.14. https://hal.archives-ouvertes.fr/hal-00987405.
    Résumé : The House of Turtles is one of the Mayan buildings of the Uxmal site in Yucatan. It has been erected during the Terminal Classic Period (AD 890-915), abandoned around AD 1050, and restored between 1969 and 1972. This monument was selected to quantitatively assess the impact of contemporary restoration practices on limestone weathering. Based on archival research and multi-scale photogrammetric surveys, weathering rates were calculated for two periods, covering respectively almost 1000 years (1050-2012) and 50 years (1972-2012). Whatever the spatial scale, whatever the construction choice, post-restoration weathering rates are systematically faster than long-term rates: at the scale of the whole façade, stone recession has operated 38 times faster since restoration than on non-restored historical parts of the building (7.6 mm instead of 0.2 mm per century). This general trend is ascribed to the removal of the stucco coating that has protected limestone and delayed deterioration from the Mayan building times until the contemporary clearing and restoration operations. Another factor responsible for accelerated limestone decay is the replacement of wooden lintels by cement lintels, as indicated by the spatial distribution of deterioration hotspots on the façade and by the computed weathering rates obtained for six fine-scale windows taking into account the construction/restoration choices. This quantitative assessment leads to emphasise the need for softer, less intrusive restoration practices and conservation strategies, that should restrict the use of incompatible materials like cement and reinforced concrete, and consider stucco as a protective skin worth being maintained.
    Mots-clés : Conservation strategies, cultural heritage, Decay assessment, Limestone, Maya architecture, rock weathering, Yucatán.

  • Rouvellac Éric« Les terroirs viticoles outils objectifs et subjectifs de la communication des vignobles, de l’identité des terroirs jusqu’à leur dissolution », Sud-Ouest Européen, p. 85-96. https://hal-unilim.archives-ouvertes.fr/hal-01140413.
    Résumé : Le terroir viticole est utilisé souvent comme un concept valise, où beaucoup d’acceptions peuvent voisiner, de l’agronomique au culturel. De cette confusion les acteurs vitivinicoles construisent des politiques de communication et du marketing autant sur de la réalité que du mythe. Ils fondent souvent cette communication sur l’histoire locale du territoire viticole, en voulant frapper l’imagination en inventant et en réinventant l’histoire des vignobles. Cette progression de la communication autour des terroirs et des territoires viticoles aboutit à des visions post modernes, très relativistes, du territoire, où la subjectivité se nourrit des symboles culturels dans le paysage et sur le bâti. A travers une approche de l’architecture de certains domaines de l’appellation viticole contrôlée Somontano (Espagne), de certains domaines du Nouveau Monde, et de bâtis iconoclastes comme entrée vitivinicole, nous nous sommes intéressés à la dissolution du terroir et du territoire dans la communication liée à l’architecture des domaines viticoles.
    Mots-clés : archintecture de chais, communication, marketing, territoires viticoles, terroirs viticoles.

  • Rovera Georges, Lopez Saez Jérôme, Corona Christophe, Stoffel Markus et Berger Frédéric« Preliminary quantification of the erosion of sandy-gravelly cliffs on the island of Porquerolles (Provence, France) through dendrogeomorphology, using exposed roots of Aleppo pine (Pinus halepensis Mill.) », Geografia Fisica e Dinamica Quaternaria, p. 10. https://hal.archives-ouvertes.fr/hal-00818486.
    Résumé : This study is a first attempt to specify the geodynamic processes leading to the erosion of detrital quaternary cliffs on the island of Porquerolles, and to quantify the rate of erosion thanks to dendrogeomorphology. The island is located in the Mediterranean Sea, off the coast of Provence (France). The method identifies the roots of Aleppo pine (Pinus halepensis Mill.) that have been unearthed by cliff retreat. The year of denudation is revealed by the net change in tracheid anatomy in tree rings, so that we can establish the retreating rates of cliffs, and assess the ratio between the distance of loosening and the number of years since denudation. 13 root samples were used to determine that the cliff retreat is due to small rockfalls, at an average rate of 2.5 cm/a. This value is compared to other rates of erosion quantified on rocky or sandy shores. A review of the method and a comparison with methods based on photogrammetry and micrometrics are proposed.
    Mots-clés : Aleppo pine, Aleppo pine., Dendrogeomorphology, Erosion rate, Littoral geodynamics, Mediterranean Sea, Quaternary cliff, Tracheid root.


  • Saez Jérôme Lopez, Corona Christophe, Berger Frédéric et Stoffel Markus« Climate change increases frequency of shallow spring landslides in the French Alps », Geology, 41 (5), p. 619-622. DOI : 10.1130/G34098.1. https://hal.archives-ouvertes.fr/hal-01131710.
    Résumé : In this contribution, past process activity is reconstructed on seven landslide bodies of the Riou Bourdoux catchment (southeastern French Alps). Based on an unusually dense data set of 3036 tree-ring series extracted from 759 conifers, we provide evidence for 61 landslide reactivations since A.D. 1898. Based on logistic regressions and threshold analyses of monthly rainfall data and temperature anomalies, we determine that the combination of snow-rich winters and positive temperature anomalies in spring (enhanced snowmelt) seems to have driven landslide reactivations in the past. Since the early 1990s, however, landslide reactivations clearly have been on the rise and thereby exhibit excessive and unprecedented rates of activity (12.5 events per 10 yr) at the scale of the Riou Bourdoux catchment. From the data, evidence exists for a shift from snowmelt-induced landslides (controlled by winter precipitation) to reactivations controlled by spring temperatures. Therefore, this contribution also adds evidence to the hypothesis that climate change (and related warmer springs) could further enhance landslide activity in the course of the 21st century.
    Mots-clés : climate change, landslides, tree-ring.


  • Schläppy Romain, Jomelli Vincent, Grancher Delphine, Stoffel Markus, Corona Christophe, Brunstein Daniel, Eckert Nicolas et Deschatres Michael« A New Tree-Ring-Based, Semi-Quantitative Approach for the Determination of Snow Avalanche Events: use of Classification Trees for Validation », Arctic, Antarctic, and Alpine Research, 45 (3), p. 383-395. DOI : 10.1657/1938-4246-45.3.383. http://www.bioone.org/doi/abs/10.1657/1938-4246-45.3.383.


  • Schneuwly-Bollschweiler Michelle, Corona Christophe et Stoffel Markus« How to improve dating quality and reduce noise in tree-ring based debris-flow reconstructions », Quaternary Geochronology, 18, p. 110-118. DOI : 10.1016/j.quageo.2013.05.001. http://linkinghub.elsevier.com/retrieve/pii/S1871101413000526.


  • Stoffel Markus, Butler David R. et Corona Christophe« Mass movements and tree rings: A guide to dendrogeomorphic field sampling and dating », Geomorphology, 200, p. 106-120. DOI : 10.1016/j.geomorph.2012.12.017. http://linkinghub.elsevier.com/retrieve/pii/S0169555X12005752.


  • Stoffel Markus, Corona Christophe, Ballesteros-Cánovas Juan Antonio et Bodoque José Maria« Dating and quantification of erosion processes based on exposed roots », Earth-Science Reviews, 123, p. 18-34. DOI : 10.1016/j.earscirev.2013.04.002. https://hal.archives-ouvertes.fr/hal-01131676.
    Résumé : Soil erosion is a key driver of land degradation and heavily affects sustainable land management in various environments worldwide. An appropriate quantification of rates of soil erosion and a localization of hotspots are therefore critical, as sediment loss has been demonstrated to have drastic consequences on soil productivity and fertility. A consistent body of evidence also exists for a causal linkage between global changes and the temporal frequency and magnitude of erosion, and thus calls for an improved understanding of dynamics and rates of soil erosion for an appropriate management of landscapes and for the planning of preventive or countermeasures. Conventional measurement techniques to infer erosion rates are limited in their temporal resolution or extent. Long-term erosion rates in larger basins have been analyzed with cosmogenic nuclides, but with lower spatial and limited temporal resolutions, thus limiting the possibility to infer micro-geomorphic and climatic controls on the timing, amount and localization of erosion. If based on exposed tree roots, rates of erosion can be inferred with up to seasonal resolution, over decades to centuries of the past and for larger surfaces with homogenous hydrological response units. Root-based erosion rates, thus, constitute a valuable alternative to empirical or physically-based approaches, especially in ungauged basins, but will be controlled by individual or a few extreme events, so that average annual rates of erosion might be highly skewed. In this contribution, we review the contribution made by this biomarker to the understanding of erosion processes and related landform evolution. We report on recent progress in root-based erosion research, illustrate possibilities, caveats and limitations of reconstructed rates, and conclude with a call for further research on various aspects of root–erosion research and for work in new geographic regions.
    Mots-clés : dendrochronology, Dendrogeomorphology, Erosion rates, Exposed roots, Target areas, Wood anatomy.

  • Touchart Laurent, Millot Camille, Maleval Véronique, Koff T., Terasmaa J., Vandel E., Vainu M., Nedjai Rachid, Bartout Pascal et Azaroual Abdelamid« Le risque de dégradation de la qualité de l'eau des lacs de la réserve naturelle de Kurtna (Estonie) : le cas de la température et de l'oxygène dissous », Riscuri si catastrofe, 13 (2), p. 49-62. https://hal.archives-ouvertes.fr/hal-00933395.
    Résumé : The Kurtna reserve (North-Eastern Estonia) includes about forty lakes of hydro-glacial origin, among which the most are kettle hole lakes. Their level and the quality of water are conditioned by aquifers, which are threatened by industrial activities (sand quarry, peat production and oil shale excavation). The paper presents results of a field campaign in March 2013, for measuring water temperature, dissolved oxygen and salinity in two ice-covered lakes (Martiska and Nõmme). Martiska is a closed lake. A large (from 0 °C to 4 °C) inverse thermal stratification takes place under the ice. The very thick anoxic layer may be caused by the cumulating effect of the ice barrier and the consumption in a rich in organic matter lake. Nõmme fits in a hydrographical chain with tributaries and an emissary. The inverse thermal stratification is disturbed by a well delimited mid-layer. Temperature, dissolved oxygen and salinity show that it is probably the fluvial water body, which has entered the lake. The hypothesis is confirmed by the study of the river plume. This inflow is rich in dissolved oxygen. We may suggest, that the lakes with an affluent are less threatened by the winter lack of oxygen than the closed lakes of the region.
    Mots-clés : banquise lacustre, dissolved oxygen, ice-covered lake, inverse stratification, oxygène dissout, stratification inverse, température de l'eau, water temperature.


  • Trappmann Daniel, Stoffel Markus et Corona Christophe« Rolling stones and tree rings: A state of research on dendrogeomorphic reconstructions of rockfall », Progress in Physical Geography, 37, p. 701-716. DOI : 10.1177/0309133313506451. https://hal.archives-ouvertes.fr/hal-01131673.
    Résumé : This progress report focuses on the contribution of tree-ring series to rockfall research and on recent development and challenges in the field. Dendrogeomorphic techniques have been used extensively since the early 2000s and several approaches have been developed to extract rockfall signals from tree-ring records of conifer trees. The reconstruction of rockfall chronologies has been hampered in the past by sample sizes that decrease as one goes back in time, as well as by a paucity of studies that include broadleaved tree species, which are in fact quite common in rockfall-prone environments. In this report, we propose a new approach considering impact probability and quantification of uncertainty in the reconstruction of rockfall time series as well as a quantitative estimate of presumably missed events. In addition, we outline new approaches and future perspectives for the inclusion of woody vegetation in hazard assessment procedures, and end with future thematic perspectives.
    Mots-clés : chronology, Dendrogeomorphology, frequency, hazard assessment, mass movement, Rockfall, simulation, Tree ring.
  • Vernet Gérard« La séquence sédimentaire des Gravanches/Gerzat : enregistrement d’événements « catastrophiques » à valeur chronologique en Limagne d’Auvergne (Massif central, France) », Quaternaire, 24 (2), p. 109-127.
2012

  • André Marie-Françoise, Voldoire Olivier, Roussel Erwan, Vautier Franck, Phalip Bruno et Hang Peou« Contrasting weathering and climate regimes in forested and cleared sandstone temples of the Angkor region », Earth Surface Processes and Landforms, 37, p. 519-532. https://hal.archives-ouvertes.fr/hal-01115157.


  • Arbellay Estelle, Corona Christophe, Stoffel Markus, Fonti Patrick et Decaulne Armelle« Defining an adequate sample of earlywood vessels for retrospective injury detection in diffuse-porous species », éd. par Ben Bond-Lamberty, PLoS ONE, 7 (6), p. e38824. DOI : 10.1371/journal.pone.0038824. http://dx.plos.org/10.1371/journal.pone.0038824.
  • Astrade Laurent, Stoffel Markus, Corona Christophe et Lopez Saez Jérôme« Using tree rings to study events and morphological changes: relevance, methods, and contribution of Alpine research to dendrogeomorphology », Géomorphologie : relief, processus, environnement, 3, p. 295-316.


  • Aubry Thierry [b1] (analytic), Antonio Dimuccio Luca [b2 b3] (analytic), Almeida Miguel [b4] (analytic), Buylaert Jan-Pieter [b5 b9] (analytic), Fontana Laure [b6] (analytic), Higham Thomas [b7] (analytic), Liard Morgane [b8] (analytic), Murray Andrew S. [b9] (analytic), Joao Neves Maria [b4 b11] (analytic), Peyrouse Jean-Baptiste [b10] (analytic) et Walker Bertrand [b10] (analytic)« Stratigraphic and technological evidence from the middle Palaeolithic-Châtelperronian-Aurignacian record at the Bordes-Fitte rockshelter (Roches d'Abilly site, Central France) (English) », Le témoignage stratigraphique et technologique de l'enregistrement du Paléolithique moyen-Châtelperronien-Aurignacien de l'abri sous roche de Bordes-Fitte (site des Roches d'Abilly, Centre de la France) (French), 62 (1), p. 116-137. DOI : 10.1016/j.jhevol.2011.10.009. http://search.ebscohost.com/login.aspx?direct=true&db=fcs&AN=25403532&lang=fr&site=eds-live.
    Résumé : This paper presents a geoarchaeological study of Middle and Upper Palaeolithic (Châtelperronian, Aurignacian and Solutrean) occupations preserved at the Bordes-Fitte rockshelter in Central France. The lithostratigraphic sequence is composed of near-surface sedimentary facies with vertical and lateral variations, in a context dominated by run-off and gravitational sedimentary processes. Field description and micromorphological analysis permit us to reconstruct several episodes of sediment slope-wash and endokarst dynamics, with hiatuses and erosional phases. The archaeostratigraphic succession includes Châtelperronian artefacts, inter-stratified between Middle Palaeolithic and Aurignacian occupations. Systematic refitting and spatial analysis reveal that the Châtelperronian point production and flake blanks retouched into denticulates, all recovered in the same stratigraphic unit, result from distinct and successive occupations and are not a 'transitional' Middle to Upper Palaeolithic assemblage. The ages obtained by 14C place the Châtelperronian occupation in the 41-48 ka cal BP (calibrated thousands of years before present) interval and are consistent with the quartz optically stimulated luminescence age of 39 ± 2 ka and feldspar infra-red stimulated luminescence age of 45 ± 2 ka of the sediments. The Bordes-Fitte rockshelter sequence represents an important contribution to the debate about the characterization and timing of the Châtelperronian, as well as its affinities to earlier and later industries. (English)
    Mots-clés : Abri sous roche, Anatomically modern humans, Archaeo-stratigraphy, Aurignacian, Aurignacien, Bordes-Fitte, Chatelperronian, Châtelperronien, Chronostratigraphie, Datation, Dating, Europe, France, Geoarchaeology, Géoarchéologie, Geoarcheology, Industrie lithique, Les Roches dAbilly, Lithic industry, Lithostratigraphie, Lithostratigraphy, Middle Palaeolithic, Middle/upper Palaeolithic transition, Neanderthal, Occupation humaine, Paléolithique moyen, Paléolithique supérieur, Radiocarbon and luminescence dating, Rockshelter, Sediment, Solutrean, Solutréen.
    Note Note
    <p>p116-137 22p ref 2 p.1/4 Language English Record Copyright Copyright 2012 INIST-CNRS. All rights reserved.</p>
    Note Note
    <p>Classification (French):  (52552) Paleolithique inferieur et moyen</p>
    Note Note
    <p>Classification (French):  (525) PREHISTOIRE ET PROTOHISTOIRE</p>
    Note Note
    <p>Classification (French):  (525III) EUROPE</p>
    Note Note
    <p>Classification (French):  (525III) EUROPE</p>
    Note Note
    <p>Classification (English):  (525) PREHISTORY AND PROTOHISTORY</p>
    Note Note
    <p>Affiliation: [b9] Nordic Laboratory for Luminescence Dating, Department of Earth Sciences, Aarhus University, Risø DTU, 4000 Roskilde, Denmark</p>
    Note Note
    <p>Affiliation: [b8] UMR 6042 GEOLAB, INRAP-Direction interrégionale Centre/Île-de-France, Base Orléans, France</p>
    Note Note
    <p>Affiliation: [b7] Oxford Radiocarbon Accelerator Unit, RLAHA, University of Oxford, United Kingdom</p>
    Note Note
    <p>Affiliation: [b5] Radiation Research Division, Risø DTU, 4000 Roskilde, Denmark</p>
    Note Note
    <p>Affiliation: [b3] Departamento de Ciências da Terra, Faculdade de Ciências e Tecnologia, Universidade de Coimbra, Largo Marques de Pombal, 3000-272 Coimbra, Portugal</p>
    Note Note
    <p>Classification (French):  (52553) Paleolithique superieur</p>
    Note Note
    <p>Classification (English):  (52553) Upper Palaeolithic</p>
    Note Note
    <p>Classification (English):  (52552) Lower and middle Palaeolithic</p>
    Note Note
    <p>Classification (English):  (525III) EUROPE</p>
    Note Note
    <p>Classification (English):  (525III) EUROPE</p>
    Note Note
    <p>Avail: INIST-CNRS 16050, 354000508643300070 http://cat.inist.fr/?aModele=afficheN&amp;cpsidt=25403532</p>
    Note Note
    <p>AN 25403532 FRANCIS record no 12-0301873</p>
    Note Note
    <p>Affiliation: [b11] CIAS - Centro de Investigação em Antropologia e Saude - Departamento de Ciencias da Vida, Faculdade de Ciencias e Tecnologia, Universidade de Coimbra, Apartado 3046, 3001-401 Coimbra, Portugal</p>
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    <p>Affiliation: [b10] Société d'Études et de Recherche sur le Paléolithique de la Vallée de la Claise, Les Chirons, 37290 Preuilly-sur-Claise, France</p>
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    <p>Affiliation: [b6] CNRS, UMR 7041, Maison de l'Archéologie et de l'Ethnologie R. Ginouvès, 21, Allée de l'Université, 92023 Nanterre, France</p>
    Note Note
    <p>Affiliation: [b4] Dryas Octopetala/iDryas, Rua Anibal de Lima, 170, 3000-030 Coimbra, Portugal</p>
    Note Note
    <p>Affiliation: [b2] Centro de Estudos de Geografia e Ordenamento do Território (CEGOT), Faculdade de Letras, Universidade de Coimbra, Praça da Porta Férrea, 3004-530 Coimbra, Portugal</p>
    Note Note
    <p>Affiliation: [b1] Museu do Côa, IGESPAR-IP, Instituto de Gestão do Património Arquitectónico e Arqueológico, Ministério da Cultura de Portugal, Rua do Museu, 5150-610 Vila Nova de Foz Côa, Portugal</p>


  • Ballut Christele, Michelin Yves et Miras Yannick« Landscape human shaping and spatial mobility of agropastoral practices in the Chaine des Puys during historical times (Massif Central, France) », Quaternary International, 251, p. 97 - 106. DOI : 10.1016/j.quaint.2011.02.015. https://hal.archives-ouvertes.fr/hal-01004279.
    Résumé : The Chaine des Puys is a great collection of extinct volcanoes that cover the Hercynian basement and belongs to the Auvergne Volcanoes Natural Regional Park. Both the sedimentary record and the historical archives of this area are numerous. However, the cores studied hitherto do not offer a good knowledge of the historical dynamics because most of the wetlands have dried out during historical times, causing gaps in the sedimentary record and pollen oxidization. Moreover, all the studied cores are located on the crystalline basement or on an old volcanic one predating the Chaine des Puys. Thus they do not directly provide information about the volcanoes. This article presents the only core obtained from a site, a small maar, located on a volcano. The sequence is short but does not have the same sedimentary gaps as the others. Owing to physical (grain size), chemical (C, N, P, K, Ca, Mg, N-NO3, N-NH4), palaeoecological (pollen and non-pollen palynomorphs) and historical analyses, this study gives a more precise recording of the landscape changes during the last 500 years in the volcanic area and contributes to the knowledge of the Chaine des Puys landscape. It illustrates the mobility of the historical landscape, in particular the progression and regression of the forest and the erosive crises related to more intensive grazing activity. The observations are linked with the social and economical changes, especially with the consequences of the French Revolution and the rural depopulation. This landscape history gives data about the direction of changes to the landscape preservationists. They demonstrate that even if the Chaine des Puys landscape looks natural, it has been shaped by a very specific socio-economical system inherited from the Middle Ages. These aspects could be integrated in a management plan. (C) 2011 Elsevier Ltd and INQUA. All rights reserved.
    Mots-clés : MULTIDISCIPLINARY APPROACH, pollen, Pyrenees, SPORES, vegetation.

  • Bernardie-Tahir Nathalie« Zanzibar, si loin de Dieu et si près du continent », Les Cahiers d'Outre Mer, 3, p. 322–341. http://www.cairn.info/resume.php?ID_ARTICLE=COM_255_0322.
    Mots-clés : 'Continent', 'Géographie politique', 'Identités', 'Ile', 'Zanzibar'.

  • Bernardie-Tahir Nathalie et Schmoll Camille« La voix des chercheur-es et la parole du migrant. Ce que les coulisses du terrain maltais nous enseignent », Carnets de géographes. https://halshs.archives-ouvertes.fr/halshs-00934384.
    Mots-clés : Centres de rétention, Malte, Migrations irrégulières, Terrain, ”Centres de rétention”, ”Malte”, ”Migrations irrégulières”, ”Terrain”.

  • Beylich Achim A., Decaulne Armelle, Dixon John C., Lamoureux Scott F., Orwin John F., Otto Jan-Christoph, Overeem Irina, Sœmundsson Þorsteinn, Warburton Jeff et Zwolinski Zbigniew« The global Sediment Budgets in Cold Environments (SEDIBUD) Programme: Coordinated studies of sedimentary fluxes and budgets in changing cold environments », Zeitschrift f??r Geomorphologie, Supplementary Issues, 56 (1), p. 3-8. DOI : 10.1127/0372-8854/2012/S-00069.
    Résumé : Projected climate change in cold environments is expected to alter melt-season duration and intensity, along with the number of extreme rainfall events, total annual precipitation and the balance between snowfall and rainfall. In addition, changes to the thermal balance are expected to reduce the extent of permafrost and seasonal ground frost and increase active layer depth. These effects will change surface environments in cold climate environments and alter the flfl uxes of sediments, nutrients and solutes, but the absence of data and coordinated quantitative analysis to understand the sensitivity of the surface environment are acute in cold environments. The I.A.G/A.I.G. SEDIBUD (Sediment Budgets in Cold Environments) Programme, building on the ESF SEDIFLUX (Sedimentary Source-to-Sink-Fluxes in Cold Environments) Network, has been formed to address this key knowledge gap. Coordinated efforts are carried out to quantify, compare and model sedimentary flfl uxes and budgets in 38 selected SEDIBUD Key Test Sites (cold environment catchments) worldwide.
    Mots-clés : Cold Regions, Cold Regions Source-to-Sink Flsediment Budget, Sediment budget, Source-to-Sink Fluxes.


  • Beylich Achim A., Decaulne Armelle et Lamoureux Scott F.« Sedimentary fluxes and budgets in natural and anthropogenically modified landscapes—Effects of climate change and land-use change on geomorphic processes », Geomorphology, 167–168, p. 1. (Sedimentary fluxes and budgets in natural and anthropogenically modified landscapes – Effects of climate change and land-use change on geomorphic processes). DOI : 10.1016/j.geomorph.2012.05.027. http://www.sciencedirect.com/science/article/pii/S0169555X12002668.


  • Beylich Achim A., Lamoureux Scott F. et Decaulne Armelle« The SEDIBUD (Sediment Budgets in Cold Environments) Programme: Ongoing activities and selected key tasks for the coming years », Geomorphology, 167–168, p. 2-3. (Sedimentary fluxes and budgets in natural and anthropogenically modified landscapes – Effects of climate change and land-use change on geomorphic processes). DOI : 10.1016/j.geomorph.2011.10.016. http://www.sciencedirect.com/science/article/pii/S0169555X11005320.
    Résumé : Projected climate change in cold environments is expected to alter melt-season duration and intensity, along with the number of extreme rainfall events, total annual precipitation and the balance between snowfall and rainfall. In addition, changes to the thermal balance are expected to reduce the extent of permafrost and seasonal ground frost and increase active layer depths. The combined effects of these changes will alter surface environments in cold climate regions and change the fluxes of sediments, nutrients and solutes, but the absence of data, coordinated process monitoring and coordinated quantitative analysis to understand the sensitivity of the Earth surface environment are acute in cold climate environments. The International Association of Geomorphologists (I.A.G./A.I.G.) SEDIBUD (Sediment Budgets in Cold Environments) Programme has been formed to address this key knowledge gap and builds on the earlier European Science Foundation (ESF) SEDIFLUX (Sedimentary Source-to-Sink-Fluxes in Cold Environments) Network. Coordinated efforts are carried out to monitor, quantify, compare and model sedimentary fluxes and possible effects of predicted climate change in currently 44 selected SEDIBUD Key Test Sites (cold climate environment catchments) worldwide.
    Mots-clés : Catchments, climate change, Cold environment, Key test site, modelling, monitoring, Sediment budgets, Sedimentary fluxes.

  • Boumédiène Farid, Marin Benoît, Preux Pierre-Marie, Druet-Cabanac Michel et Allee Philippe« Analyse géoépidémiologique de la sclérose latérale amyotrophie en région Limousin, période 1997–2007 », Revue neurologique. DOI : 10.1016/j.neurol.2012.01.138.

  • Chevalier Émilie et Guadagno Eléonora« Tracing Social inequalities in Environementally-induced Migration », E-Migrinter, 10, p. 86-90. http://www.mshs.univ-poitiers.fr/migrinter/index.php?text=e-migrinter/10sommaire2013&lang=fr.


  • Corona Christophe, Lopez Saez Jérôme, Stoffel Markus, Bonnefoy Mylène, Richard Didier, Astrade Laurent et Berger Frédéric« How much of the real avalanche activity can be captured with tree rings? An evaluation of classic dendrogeomorphic approaches and comparison with historical archives », Cold Regions Science and Technology, 74-75, p. 31-42. DOI : 10.1016/j.coldregions.2012.01.003. http://linkinghub.elsevier.com/retrieve/pii/S0165232X1200016X.

  • Corona Christophe, Lopez Saez Jérôme, Stoffel Markus, Rovera Georges, Edouard Jean-Louis et Berger Frédéric« Seven centuries of avalanche activity at Echalp (Queyras massif, southern French Alps) as inferred from tree-rings », The Holocene, 23 (2), p. 292-304. https://hal.archives-ouvertes.fr/hal-00818484.
    Résumé : The purpose of this study was to reconstruct spatio-temporal patterns of avalanche events in a forested avalanche path of the Queyras massif (Echalp avalanche path, Southeast French Alps). Analysis of past evnts was based on tree-ring series from 163 heavily affected multi-centennial larch trees (Larix decidua Mill.) near or next to the avalanche path. A total of 514 growth disturbances, such as tangential rows of traumatic resin ducts, the onset of compression wood as well as abrupt growth suppression or release, are identified in the samples indicating 38 destructive snow avalanches between 1338 and 2010. The mean return period of snow avalanches was 22 years with a 4% probability that avalanche occurs in a particular year. On a temporal plan, three maxima In snow avalanche frequency were reconstructed at the beginning of the 16th and 19th centuries and around 1850, correlating with above average winter temperatures and glacier advances. Analysis of the spatial distribution of disturbed trees contributed to the determination of four preferential patterns of avalanche events. The comparison of dendrogeomorphic data with historical records demonstrate that at least 18 events- six of were undocumented- reached the hamlet of Echalp during the last seven centuries, but no significant temporal trend was detected concerning the frequency of these extreme events.
    Mots-clés : Dendrogeomorphology, French Alps, frequency, last millennium, reconstruction, snow avalanche, tree-rings.


  • Decaulne Armelle, Eggertsson Ólafur et Sæmundsson Þorsteinn« A first dendrogeomorphologic approach of snow avalanche magnitude–frequency in Northern Iceland », Geomorphology, 167–168, p. 35-44. (Sedimentary fluxes and budgets in natural and anthropogenically modified landscapes – Effects of climate change and land-use change on geomorphic processes). DOI : 10.1016/j.geomorph.2011.11.017. http://www.sciencedirect.com/science/article/pii/S0169555X11006349.
    Résumé : The paper examines the potential of dendrogeomorphic analyses to deliver a one-year resolution chronology of snow-avalanche winters in Northern Iceland, at the scale of a colluvial cone covered with European White Birch trees and shrubs (Betula pubescens Ehrh.). Reconstruction of the avalanche history is performed using tree-ring analyses. Determination of the most reliable growth disturbance (class 1 of growth eccentricity) and applying a tempering index value with threshold 10% of trees responding in the same year and at least two trees affected, avalanche-activity years are highlighted, resulting in 52 avalanche winters. Amongst those, 5 winters have activity index over 40%, indicating major years. Calculation of frequency of similar growth disturbances at each tree provides a return period ranging from 4.2 to 19 years. Inferred spatial extent of snow-avalanche events induces flow-like snow avalanches with limited extent around the tree-less parts of the cone with a return period under 6 years; the cone is totally covered and the distal tree-limit over-passed with a return period of 15–20 years.
    Mots-clés : Dendrogeomorphology, European White Birch (Betula pubescens Ehrh.), Iceland, snow avalanche.
  • Delay Etienne et Zottele F« Cartographie web : comment construire le lien entre territoire et consommateur ? », CARTES & GÉOMATIQUE - Un Autre Monde, 213, p. 70-75.

  • Delay Etienne et Zottele Fabio« Cartographie web : comment construire le lien entre territoire et consommateur ? », Cartes & géomatique, 213, p. 70–75. https://hal.archives-ouvertes.fr/hal-00920053.
    Résumé : Dans le contexte hyper concurrentiel de la viticulture globalisée, la viticulture de fortes pentes, élément majeur de la structuration de paysages emblématiques, est aujourd'hui la grande oubliée de la recherche et du développement de la viticulture. Dans le cadre d'un partenariat entre le CERVIM, l'université de Limoges (GEOLAB), et la fondation E. Mach (Trentino, Italie), nous avons cherché à développer des outils pour la valorisation et la sauvegarde de ces paysages. Du traitement de la donnée à l'exposition au public, nous présenterons ici toutes les phases qui ont conduit à la réalisation d'un prototype de serveur cartographique permettant de créer un lien entre le consommateur et le territoire (voire le terroir) de production.
    Mots-clés : Cartographie, LiDAR, montagne, SIG, viticulture, webGIS.


  • Feuillet Thierry, Mercier Denis, Decaulne Armelle et Cossart Etienne« Classification of sorted patterned ground areas based on their environmental characteristics (Skagafjörður, Northern Iceland) », Geomorphology, 139–140, p. 577-587. DOI : 10.1016/j.geomorph.2011.12.022. http://www.sciencedirect.com/science/article/pii/S0169555X11006362.
    Résumé : A multivariate statistical method (factor analysis of mixed data and hierarchical classification) was used to classify the environmental settings where sorted patterned ground develops in a wet oceanic periglacial area (Skagafjörður, Northern Iceland). A total of 750 periglacial features, distributed over 75 sites, were studied. Nine explanatory variables were assessed by fieldwork and using a digital elevation model, the variables were subdivided into three groups (latitude, topography and soil characteristics) and then integrated into a geographical information system. Furthermore, a correlation between the environmental variables and an intrinsic variable (patterned ground mesh diameter) was determined by a bivariate test. The results show that sorted patterned ground are spread over three homogenous areas, mostly differentiated by altitude, insolation, grain size characteristics and type of drift. In addition, feature diameters differ significantly from one group to another. Finally, it appears that patterned ground diameters are positively correlated with (i) the proportion of clay to medium silt content (r = 0.35), (ii) altitude (r = 0.51), and especially with (iii) clast length (r = 0.97). This strong relationship with clast length is observed in each homogenous patterned ground area at both site and feature scales.
    Mots-clés : Circles, Factor analysis, Periglacial geomorphology, Polygons, Subarctic.

  • Fournier Jérôme, Etienne Samuel et Le Cam Jean-Benoit« Inter- and intraspeci c variability in the chemical composition of the mineral phase of cements from several tube-building polychaetes », Geobios, 43 (2), p. 191-200. https://hal.inria.fr/hal-00671738.


  • Gurnell Angela M., Bertoldi Walter et Corenblit Dov Jean-francois« Changing river channels: the roles of hydrological processes, plants and pioneer fluvial landforms in humid temperate, mixed load, gravel bed rivers. », Earth-Science Reviews, 111, p. 129-141. DOI : 10.1016/j.earscirev.2011.11.005. https://hal.archives-ouvertes.fr/hal-01132443.
    Résumé : The fluvial riparian and aquatic patch mosaic varies along rivers according to geomorphological setting, hydrological regime, sediment supply and surface–groundwater connectivity. This relation between physical processes and plants is not unidirectional. Once established, riparian and aquatic plants frequently act as physical ecosystem engineers by trapping and stabilising sediments, organic matter and the propagules of other plant species, modifying the local sedimentary and morphological environment by driving the development of landforms and associated habitats, and so facilitating the rapid establishment of other plants that can in turn reinforce the development of landforms such as river banks, vegetated islands and floodplains. This paper reviews knowledge on the hydrogeomorphological significance of riparian and aquatic vegetation with a particular emphasis on humid temperate, mixed load, gravel bed, floodplain rivers. First, we investigate how vegetation dynamics across river margins are governed by hydrological processes that can both promote riparian vegetation growth and disturb and destroy riparian and aquatic vegetation. We show, with some simple numerical modeling, that different combinations of moisture supply and flow disturbance have the potential to generate many different responses in the lateral distribution of vegetation biomass along river corridors. Second, building on the varied lateral biomass distributions that are primarily dictated by hydrological processes, we review research evaluating characteristic vegetation-mediated landform development. We investigate aquatic and riparian plants acting as physical ecosystem engineers by creating and modifying habitats in river systems with sufficient suspended sediment supply for habitat or landform building. These plants have a crucial impact on sediment stabilisation and pioneer landform building along the interface between plant (resistance) dominated and fluvial-disturbance (force) dominated zones of the river corridor. We present some examples of vegetation-mediated landforms along rivers with strongly contrasting hydrological regimes and thus lateral distributions of vegetation. Lastly, we present a conceptual synthetic model that links the development of pioneer landforms by engineering plants with river morphology and morphodynamics in humid temperate, mixed load, gravel bed, floodplain rivers. Drawing on four example rivers, we show how different plants and pioneer landforms act at the interface between the plant dominated and fluvial-disturbance dominated zones of the river corridor as river energy and vegetation colonisation and growth change.

  • Guyot Sylvain« L’émergence d’un Front Touristique Transfrontalier dans les Andes Centrales (Triple Frontière: Argentine, Bolivie et Chili) », ACME: An International E-Journal for Critical Geographies, 11 (2), p. 304–334. http://www.academia.edu/download/30876539/Guyot2012.pdf.

  • Guyot Sylvain« L'émergence d'un Front Touristique Transfrontalier dans les Andes Centrales (Triple Frontière : Argentine, Bolivie et Chili) », ACME: An International E-Journal for Critical Geographies, 11 (2), p. 304 -334. https://hal.archives-ouvertes.fr/hal-00764107.

  • Guyot Sylvain« La construction territoriale de têtes de ponts antarctiques rivales : Ushuaia (Argentine) et Punta Arenas (Chili) », L'Espace politique. https://hal.archives-ouvertes.fr/hal-00764109.

  • Jaillet Stéphane, Cailhol Didier, Arnaud Judicaël, Astrade Laurent, Belingard Christelle, Boche Elisa, Cornillon Thomas, Couchoud Isabelle, Duguet Rémi, Franck Norbert, Gauchon Christophe, Hellstrom John, Le Roux Patrick, Monteil Patrick, Peyronel Olivier, Pons-Branchu Edwige, Sadier Benjamin et Thomas Mathieu« Les crues du système karstique de Foussoubie (Ardèche, France). Une analyse morphologique et hydrodynamique des circulations dans la zone épinoyée du Karst », Collection Edytem, 13, p. 115-138. (Karsts, Paysages et Préhistoire). https://hal.archives-ouvertes.fr/halsde-00745473.
    Mots-clés : crue souterraine, hydromorphologie karstique, karst ardéchois, système de Foussoubie, zone épinoyée.

  • Leyssenne Christophe, Carole Zampini, Chevallier Marius, Damien Lagrange et Marion Allirot« Panorama des circuits courts en Limousin », Agreste Limousin, 74, p. 73-100. https://halshs.archives-ouvertes.fr/halshs-00933597.
    Résumé : Panorama des circuits de proximité réalisé à partir d'une enquête Draaf-Région inédite, complémentaire au Recensement Agricole, auprès de 1/3 des producteurs en circuits de proximité du Limousin + 40 entretiens semi-directifs. Données socio-démographiques. Approche par filières et modes de commercialisation. http://draaf.limousin.agriculture.gouv.fr/Juin-2012-No74
    Mots-clés : circuits courts, circuits de proximité agroalimentaires, panorama.
  • Leyssenne Christophe, Zampini Carole, Chevallier Marius, Lagrange Damien et Allirot Marion« Panorama des circuits courts en Limousin », Agreste Limousin, 74, p. 73-100.
  • Linton Jamie« (Book Review) Technonatures: Environments, Technologies, Spaces, and Places in the Twenty-first Century, edited by Damian F. White and Chris Wilbert », The Canadian Geographer, 56 (1), p. 151-152.
  • Linton Jamie« (Book Review) Engineering Nature: Water, Development, and the Global Spread of American Environmental Expertise, by Jessica B. Teisch », Journal of Historical Geography, 38, p. 205-206.


  • Lopez Saez Jérôme, Corona Christophe, Stoffel Markus et Berger Frédéric« High-resolution fingerprints of past landsliding and spatially explicit, probabilistic assessment of future reactivations: Aiguettes landslide, Southeastern French Alps », Tectonophysics. DOI : 10.1016/j.tecto.2012.04.020. http://linkinghub.elsevier.com/retrieve/pii/S0040195112002521.


  • Lopez Saez Jérôme, Corona Christophe, Stoffel Markus, Schoeneich Philippe et Berger Frédéric« Probability maps of landslide reactivation derived from tree-ring records: Pra Bellon landslide, southern French Alps », Geomorphology, 138 (1), p. 189-202. DOI : 10.1016/j.geomorph.2011.08.034. http://linkinghub.elsevier.com/retrieve/pii/S0169555X11004703.

  • Palet Martinez Josep Maria, Julia Ramon, Riera Mora Santiago, Ejarque Ana, H. Orengo Hector, Miras Yannick, Garcia Arnau, Allee Philippe, Reed Jane, Marco Javier, Marqués M. A., Furdada G. et Montaner Jordi« Landscape systems and human land-use interactions in Mediterranean highlands and littoral plains during the Late Holocene: integrated analysis from the InterAmbAr Project (North-Eastern Catalonia) », ETopoi, Journal of Ancient Studies, 3, p. 305-310. https://hal.archives-ouvertes.fr/hal-00715174.
    Mots-clés : archaeology, cachment-based interactions, land-use, Landscape evolution, Late Holocene, Late Holocene., Mediterranean environments, paleoenvironment.


  • Perez-Obiol Ramon, Bal Marie-Claude, Albert Pelachs, Raquel Cunill et Soriano Joan Manuel« Vegetation dynamics and anthropogenically forced changes in the Estanilles peat bog (southern Pyrenees) during the last seven millennia », Vegetation History and Archaeobotany, 21, p. 385–396. DOI : 10.1007/s00334-012-0351-5. https://hal-unilim.archives-ouvertes.fr/hal-01126737.
    Résumé : Estanilles peat bog, located in the northeastern Iberian peninsula,was studied to determine the anthropogenic changes in the landscape over the past seven millennia. The pollen diagram and sedimentary charcoal analyses from this site permit us to reconstruct the landscape changes in an area of both Mediterranean and Atlantic influence. In addition, Montarenyo ombrotrophic peat bog was studied to strengthen the analysis of data from more recent centuries. This paper attempts a reconstruction of historical cultural landscapes using two complementary palaeobotanical proxies (pollen and charcoal) in high mountain environments. The macroscopic charcoal record shows a fire signal since 7500 cal. B.P. However, the relationship between fire frequency and human impact is not always linear. This divergence is linked to fuel availability and fire activity. Fire has been used repeatedly to clear ground and to maintain open areas, and has been a key tool for the management of these high mountain areas. The intensity of use of the landscape implies the expansion of agricultural areas into higher altitudes, including cereal cultivation above 2,200 m a.s.l., during the Middle Ages. The first clear human influence detected in the pollen percentage data is recorded between 6000 and 7000 cal. B.P. and, until present times, the greatest changes in vegetation and landscape history occurred during periods of particular specialization in socioeconomic activities during the Middle Ages.
    Mots-clés : Anthropic action, Fire, HOLOCENE, pollen, Pyrenees, Sedimentary charcoal.


  • Poiraud Alexandre« Knickpoints from watershed scale to hillslope scale: a key to landslide control and geomorphological resilience knickpoints and landslide patterns », Zeitschrift für Geomorphologie, Supplementary Issues, 56 (4), p. 19–35. DOI : 10.1127/0372-8854/2012/S-00078. http://www.ingentaconnect.com/content/schweiz/zfgs/2012/00000056/00000004/art00003.


  • Poiraud Alexandre« Knickpoints from watershed scale to hillslope scale: a key to landslide control and geomorphological resilience Knickpoints and landslide patterns », Zeitschrift fur Geomorphologie Supplement Band, 56 (4), p. 19-35. DOI : 10.1127/0372-8854/2012/S-00078. https://hal.archives-ouvertes.fr/hal-01087901.
    Résumé : The analysis of different geomorphic contexts in the Puy-en-Velay Tertiary basin (Massif central, France) reveals the importance of knickpoints in active landslide patterns at different spatial scales. At the watershed scale (mesoscale), landslides are essentially located downstream of knickpoints as a result of headward erosion dynamics driven by the incision of the river Loire and local base level lowering. At the hillslope scale, knickpoints illustrate morphostructural conditions and landslide dynamics, dependent on the elevation of the crystalline basement relative to the lowering of the hydrographic network. Hillslopes currently connected with the hydrographic network are still active, while disconnected hillslopes are fossilised. Finally, knickpoints can be considered as being strong discontinuities separating different geomorphologic units. The latter form as a result of variable adjustment tendencies to the base level (present or old) and consequently different hillslope dynamics. In short, knickpoints mark a limit between areas of different different hillslope dynamics. In short, knickpoints mark a limit between areas of different geomorphologic sensitivity and differ in their capacity for resilience.
    Mots-clés : $\bullet$, geomorphologic, knickpoint, landslide, resilience, Velay.

  • Rouvellac Éric, Dellier Julien et Guyot Sylvain« Entre terroir et territoire », L’Espace géographique, Tome 40 (4), p. 337-351. http://www.cairn.info/article.php?ID_ARTICLE=EG_404_0337.

  • Rouvellac Éric, Dellier Julien et Guyot Sylvain« Entre terroir et territoire ; la renaissance du vignoble sud africain », L'Espace Géographique, p. 1-16. https://hal.archives-ouvertes.fr/hal-00933462.
    Mots-clés : AFRIQUE DU SUD, front d'expansion., guaranteed vintage, South Africa, système d'appellations, terroirs, vignobles, vineyards, wine frontiers..


  • Saemundsson Thorsteinn, Arnalds Olafur, Kneisel Christof, Jonsson Helgi Pall et Decaulne Armelle« The Orravatnsrustir palsa site in Central Iceland—Palsas in an aeolian sedimentation environment », Geomorphology, 167–168, p. 13-20. (Sedimentary fluxes and budgets in natural and anthropogenically modified landscapes – Effects of climate change and land-use change on geomorphic processes). DOI : 10.1016/j.geomorph.2012.03.014. http://www.sciencedirect.com/science/article/pii/S0169555X12001328.
    Résumé : The Orravatnsrustir palsa site, located north of the Hofsjokull glacier in Central Iceland, has well developed palsas located in a valley-like depression at 710–715 m a.s.l. and stands in remarkable contrast to the surrounding desert-like highland plateau. The purpose of this paper is to give an overview of the Orravatnsrustir palsa site, geographic distribution and geomorphic statistics related to size and permafrost thicknesses of the palsas, including recent changes. Icelandic palsas exhibit characteristics of both organic palsas and lithalsa (frozen mineral soil). They are subjected to intense aeolian deposition of volcanic materials. The palsas are often 40–200 cm high, with a 40–80 cm thick active layer and permafrost reaching more than 5 m depth. Measurements of the size of the palsas and the thickness of the active layer which started in 2001 indicate that their size is decreasing and the thickness of the active layer is increasing. These results are in agreement with the general warming trend which has occurred in Iceland during the last decade.
    Mots-clés : Andosol, Global warming trend, Iceland, Palsas, Permafrost.

  • Steiger Johannes et Corenblit D.« The emergence of an 'evolutionary geomorphology'? », Central European Journal of Geosciences, 4 (3), p. 376-382. https://hal.archives-ouvertes.fr/hal-00877908.


  • Thierry Feuillet, Mercier Denis, Decaulne Armelle et Cossart Etienne« Classification of sorted patterned ground areas based on their environmental characteristics (Skagafjörḥur, Northern Iceland) », Geomorphology, 139-140, p. 577-587. DOI : 10.1016/j.geomorph. 2011.12.022. https://hal.archives-ouvertes.fr/hal-00660975.
    Résumé : A multivariate statistical method (factor analysis of mixed data and hierarchical classification) was used to classify the environmental settings where sorted patterned ground develops in a wet oceanic periglacial area (Skagafjörður, Northern Iceland). A total of 750 periglacial features, distributed over 75 sites, were studied. Nine explanatory variables were assessed by fieldwork and using a digital elevation model, the variables were subdivided into three groups (latitude, topography and soil characteristics) and then integrated into a geographical information system. Furthermore, a correlation between the environmental variables and an intrinsic variable (patterned ground mesh diameter) was determined by a bivariate test. The results show that sorted patterned ground are spread over three homogenous areas, mostly differentiated by altitude, insolation, grain size characteristics and type of drift. In addition, feature diameters differ significantly from one group to another. Finally, it appears that patterned ground diameters are positively correlated with (i) the proportion of clay to medium silt content (r = 0.35), (ii) altitude (r = 0.51), and especially with (iii) clast length (r = 0.97). This strong relationship with clast length is observed in each homogenous patterned ground area at both site and feature scales.
    Mots-clés : * Circles, * Factor analysis, * Periglacial geomorphology, * Polygons, * Subarctic.


  • Yemadje Luce-Perrine, Houinato Dismand, Boumédiène Farid, Ngoungou Edgar Brice, Preux Pierre-Marie et Druet-Cabanac Michel« Prevalence of epilepsy in the 15 years and older in Benin: a door-to-door nationwide survey. », Epilepsy Research, 99 (3), p. 318-26. DOI : 10.1016/j.eplepsyres.2011.12.012. https://hal-unilim.archives-ouvertes.fr/hal-00920487.
    Résumé : PURPOSE: Estimate the prevalence of epilepsy in the 15 years and older in Benin. METHODS: We used a random multistage sampling design to select a representative sample of the 15 years and older in Benin. From March to May 2010, people were screened door-to-door in the twelve regions of Benin. Screening and data collection were performed using a validated standardised questionnaire of epilepsy in tropical regions. A neurologist examined all people suspected of epilepsy. RESULTS: We identified 174 suspected epilepsy cases from 13,046 screened people; 105 were confirmed by the neurologist (54 men and 51 women). The mean age of PWE was 28.9±14.3 years. The estimate of crude prevalence of epilepsy in the 15 years and older in Benin was 8.05/1000 (95% CI: 6.52-9.58/1000). The crude prevalence of epilepsy among men was 9.77/1000 (95% CI 7.35-12.73/1000) and 6.79/1000 (95% CI 5.06-8.91/1000) for women. The age-adjusted prevalence of epilepsy on sub-Saharan Africa population was 8.25/1000 and 7.33/1000 on world population. Substantial heterogeneity was noted, with differences from one region to another. The most common seizure types were generalised tonic-clonic (80.0%), partial secondary generalised seizures (14.3%) and partial seizures (5.7%). SIGNIFICANCE: This nationwide study is the first in West Africa. It provides a low prevalence of epilepsy in Benin compared to previous studies performed in this country and in neighbouring countries. Restricted-area studies are often motivated by the presence of specific risk factors and could overestimate the prevalence, while large-scale studies could underestimate other subtle forms of epilepsy.
  • Zottele F, Andreis D et Delay Etienne« Quanto sono eroici? Nuovi strumenti per la valorizzazione del lavoro dei viticoltori di montagna », Terra Trentina, 4, p. 20-23.
2011

  • Alfonso Guy, Arnaud Philippe et Le Barrier Christian« L’ensemble public monumental de Jaude, un vaste projet d’aménagement à Augustonemetum au IIe s. de n. è. », Archéopages, INRAP (33), p. 44-51. (Grands Travaux). https://hal.archives-ouvertes.fr/hal-01131921.
    Mots-clés : bâtiment public, clermont-ferrand, romain.

  • Alfonso Guy et Nectoux Elise« Le quartier du Haut-Solier à Saint-Paulien (Haute-Loire), coeur de la cite romaine de Ruessium ? », Bulletin historique de la Société académique du Puy en Velay et de la Haute-Loire, 87, p. 245-266. https://hal.archives-ouvertes.fr/hal-01131897.
    Mots-clés : cité, Haute-Loire, romain.


  • André Marie-Françoise, Phalip Bruno, Voldoire Olivier, Vautier Franck, Géraud Yves, Benbakkar Mhammed, Constantin Christophe, Huber Fabienne et Morvan Gilles« Weathering of sandstone lotus petals at the Angkor site: a 1,000-year stone durability trial », Environmental Earth Sciences, 63, p. 1723-1739. DOI : 10.1007/s12665-010-0734-9. https://hal.archives-ouvertes.fr/hal-00682315.
    Mots-clés : Angkor temples, Cambodia, Chemical weathering, Mechanical weathering, Sandstone durability, Stone properties.


  • Bal Marie-Claude, Albert Pelachs, Perez-Obiol Ramon, Julià Ramón et Cunill Raquel« Fire history and human activities during the last 3300 cal yr BP in Spain's Central Pyrenees: The case of the Estany de Burg », Palaeogeography, Palaeoclimatology, Palaeoecology, 300, p. 179–190. DOI : 10.1016/j.paleo.2010.12.023. https://hal-unilim.archives-ouvertes.fr/hal-01126708.
    Résumé : The study of macroscopic charcoal particles from peat bogs has led to a better understanding of climate, vegetation and fire history, and human impacts. To determine the relationship between human activities and the role of fire events in vegetation change during the last 3300 cal yr BP, we present the results of a multiproxy approach based on the analysis of sediment characteristics, sedimentary charcoal, organic matter and pollen, as well as historical sources. This multi-proxy research permits high resolution palaeoenvironmental and fire history reconstruction of a mountain area located in the southern central Pyrenees (Spain). In the Pyrenees, fire is typically attributed to human activities since the beginning of the Bronze Age and may be correlated with slash-and-burn cultivation, metallurgy and pasturing activities. The data indicate a good linkage between high fire signals and Poaceae and Cerealia pollen, which reveals the impact of agro-pastoral practices. This study also shows two periods, 2900–2650 cal yr BP and 1850–1550 cal yr BP, for which higher frequencies of fire occurred, suggested by high arboreal pollen (AP) concentrations, and confirming the need for arboreal biomass to sustain fires. From the beginning of the Middle Ages, it seems that a change occurred in the anthropogenic use of fire, from a tool for agro-pastoral forest clearance to a means of maintaining open spaces.
    Mots-clés : activities, analysis, charcoal, Fire, Historical, Human, matter, Organic, pollen, Sedimentary, sources.

  • Beaurain Christophe et Brullot Sabrina« L'écologie industrielle comme processus de développement territorial: une lecture par la proximité », Revue d’Économie Régionale & Urbaine, 2, p. 313–340. http://www.cairn.info/resume.php?ID_ARTICLE=RERU_112_0313.

  • Beaurain Christophe et Brullot Sabrina« L’écologie industrielle comme processus de développement territorial : une lecture par la proximité », Revue d'Economie Régionale et Urbaine ( RERU), 2, p. 313-340. https://hal.archives-ouvertes.fr/hal-01130335.
    Mots-clés : Développement territoriale, écologie industrielle, économie de la proximité.

  • Bernardie-Tahir Nathalie« Zanzibar, si loin de Dieu et si près du Continent », Les Cahiers d'Outre-Mer, 64 (255), p. 321-340. https://halshs.archives-ouvertes.fr/halshs-00934382.
    Mots-clés : Continent, Géographie politique, Identités, Ile, zanzibar, ”Continent”, ”Géographie politique”, ”Identités”, ”Ile”, ”Zanzibar”.

  • Bernardie-Tahir Nathalie« Immobiles îles - Temporalités et altérités insulaires », Géographie et cultures, 7475, p. 159-175. https://halshs.archives-ouvertes.fr/halshs-00934380.
    Mots-clés : géographie culturelle, Insularité, représentations, ”géographie culturelle”, ”Insularité”, ”représentations”.

  • Beylich A.A., Lamoureux S.F. et Decaulne Armelle« Developing frameworks for studies on sedimentary fluxes and budgets in changing cold environments », Quaestiones Geographicae, 30, p. 5-18. https://halshs.archives-ouvertes.fr/halshs-00650226.
    Mots-clés : climate change, cold environments, contemporary sediment fluxes and budgets, coordinated data collection and exchange, inter-site comparisons, monitoring.

  • Boivin Pierre, Besson Jean-Claude, Ferry P., Gourgaud A., Miallier D., Thouret J.-C. et Vernet Gérard« Le point sur l'éruption du lac Pavin il y a 7000 ans », Revue des Sciences Naturelles d'Auvergne, 74-75, p. 45-55. http://hal.in2p3.fr/in2p3-00700241.
    Mots-clés : eruption, lac Pavin, volcan.


  • Boumédiène Farid, Druet-Cabanac Michel, Marin Benoit, Preux Pierre-Marie, Allee Philippe et Couratier Philippe« Contribution of geolocalisation to neuroepidemiological studies: incidence of ALS and environmental factors in Limousin, France. », Journal of the Neurological Sciences, 309 (1-2), p. 115-22. DOI : 10.1016/j.jns.2011.07.002. https://hal-unilim.archives-ouvertes.fr/hal-00675730.
    Résumé : This article aimed to detect clusters of amyotrophic lateral sclerosis (ALS) and their relationships with exposure of the population to various environmental factors in the Limousin region of France. Methods used were extensively described. We adopted a geographical approach that revealed variations in the incidence of ALS and permitted us to identify three regional clusters and their spatial spread. We considered environmental factors and the potent locations or source of substances or activities hypothesized to be associated with ALS. Notably, we determined which industrial activities seem to affect the incidence of ALS in Limousin. The results were interpreted at a regional level. Among the 50 factors this article considered, paper paste and water treatment plants were particularly geostatistically significant and deserve special attention in the ongoing investigations into high resolution spatial clusters (geographical and epidemiological studies).
  • Brooks David B. et Linton Jamie« Governance of International Aquifers: Balancing Efficiency, Equity, and Sustainability », International Journal of Water Resources Development, 27 (4).

  • Carracedo Juan Carlos, Guillou Hervé, Nomade S., Rodríguez Badiola Eduardo, José Pérez Torrado Francisco, Rodriguez Gonzales Alejandro, Paris Raphael, Troll R., Valentin, Wiesmaier Sebastian, Delcamp Audray et Fernández Turiel J.L.« Evolution of ocean island rifts: the northeast rift-zone of Tenerife, Canary Islands », Geological Society of America Bulletin, 123, p. 532-584. https://hal.archives-ouvertes.fr/hal-00562319.


  • Chenet Marie, Roussel Erwan, Jomelli Vincent, Grancher Delphine et Cooley Daniel« A response to the commentary of M. Dąbski about the paper ‛Asynchronous Little Ice Age glacial maximum extent in southeast Iceland’ (Geomorphology (2010), 114, 253–260) », Geomorphology, 128 (1-2), p. 103-104. DOI : 10.1016/j.geomorph.2010.12.024. http://linkinghub.elsevier.com/retrieve/pii/S0169555X10005684.
    Résumé : In a commentary about the paper ‛Asynchronous Little Ice Age glacial maximum extent in southeast Iceland’ (Geomorphology 114 (2010) 253-260), M. Dąbski questioned the validity of the generalized extreme value method and the Bayesian approach in lichenometric dating of the outermost LIA Fláajökull moraines in SE Iceland. This paper responds to these criticisms by explaining the relevance of the method applied and the relevance of the dates obtained.
    Mots-clés : Bayesian approach, Fláajökull, GEV method, Iceland, Lichenometry.

  • Chevallier Marius« The cooperatives' sources of efficiency: a catalyst for the emergence of localized norms », Journal of Cooperative Studies, 44 (1), p. 31-40. https://hal.archives-ouvertes.fr/hal-00921392.
    Mots-clés : coopérative, democracy, efficience, efficiency, gouvernance, governance, stabilité, stability.


  • Corenblit Dov, Baas Andreas C.W., Bornette Gudrun, Darrozes José, Delmotte Sebastien, Francis Robert A., Gurnell Angela M., Julien Frédéric, Naiman R.J. et Steiger Johannes« Feedbacks between geomorphology and biota controlling Earth surface processes and landforms: A review of foundation concepts and current understandings », Earth-Science Reviews, 106 (3-4), p. 307-331. DOI : 10.1016/j.earscirev.2011.03.002. https://hal.archives-ouvertes.fr/halsde-00601777.
    Résumé : This review article presents recent advances in the field of biogeomorphology related to the reciprocal coupling between Earth surface processes and landforms, and ecological and evolutionary processes. The aim is to present to the Earth Science community ecological and evolutionary concepts and associated recent conceptual developments for linking geomorphology and biota. The novelty of the proposed perspective is that (1) in the presence of geomorphologic-engineer species, which modify sediment and landform dynamics, natural selection operating at the scale of organisms may have consequences for the physical components of ecosystems, and particularly Earth surface processes and landforms; and (2) in return, these modifications of geomorphologic processes and landforms often feed back to the ecological characteristics of the ecosystem (structure and function) and thus to biological characteristics of engineer species and/or other species (adaptation and speciation). The main foundation concepts from ecology and evolutionary biology which have led only recently to an improved conception of landform dynamics in geomorphology are reviewed and discussed. The biogeomorphologic macroevolutionary insights proposed explicitly integrate geomorphologic niche-dimensions and processes within an ecosystem framework and reflect current theories of eco- evolutionary and ecological processes. Collectively, these lead to the definition of an integrated model describing the overall functioning of biogeomorphologic systems over ecological and evolutionary timescales.
    Mots-clés : biogeomorphologic feedback, biogeomorphologic succession, eco-evolutionary dynamics, ecosystem engineers, landforms, niche construction.


  • Corona Christophe, Edouard Jean-Louis, Guibal Frederic, Guiot Joel, Bernard Sylvain, Thomas Andre et Denelle Nicole« Long-term summer (AD751-2008) temperature fluctuation in the French Alps based on tree-ring data », Boreas, 40 (2), p. 351-366. DOI : 10.1111/j.1502-3885.2010.00185.x. http://doi.wiley.com/10.1111/j.1502-3885.2010.00185.x.
  • Corona Christophe, Edouard Jean-Louis, Guibal Frédéric, Lambert Georges-Noel, Py Vanessa, Guiot Joel et Thomas André« Last Millenium summer temperature variations in Briançonnais (French Alps) based on a composite tree-ring larch chronology », Scientia artis, 7, p. 26-41.


  • Corona Christophe, Lopez Saez Jérôme, Rovéra Georges, Stoffel Markus, Astrade Laurent et Berger Frédéric« High resolution, quantitative reconstruction of erosion rates based on anatomical changes in exposed roots at Draix, Alpes de Haute-Provence — critical review of existing approaches and independent quality control of results », Geomorphology, 125 (3), p. 433-444. DOI : 10.1016/j.geomorph.2010.10.030. http://linkinghub.elsevier.com/retrieve/pii/S0169555X1000468X.


  • Corona Christophe, Lopez Saez Jérôme, Rovéra Georges, Astrade Laurent, Stoffel Markus et Berger Frédéric« Validation d’une méthode de quantification des vitesses d’érosion sur marnes par dendrogéomorphologie (Draix, Alpes de Haute-Provence) », Géomorphologie : relief, processus, environnement, 1/2011, p. 83-94. DOI : 10.4000/geomorphologie.9254. http://geomorphologie.revues.org/9254.


  • Desroy N., Dubois S. F., Fournier J., Ricquiers L., Le Mao P., Guerin L., Gerla D., Rougerie M. et Legendre A.« The conservation status of Sabellaria alveolata (L.) (Polychaeta: Sabellariidae) reefs in the Bay of Mont-Saint-Michel », Aquatic Conservation: Marine and Freshwater Ecosystems, 21 (5), p. 462-471. DOI : 10.1002/aqc.1206. http://onlinelibrary.wiley.com/doi/10.1002/aqc.1206/abstract.
    Résumé : * Reefs built by the annelid worm Sabellaria alveolata in the Bay of Mont-Saint-Michel (France) are the most extensive intertidal biogenic structures within Europe. Before and after mussel farming extensions, a study designed to provide a biological health index of the Sainte-Anne reef (223 ha) was carried in 2001 and 2007 to serve as an easy-to-use management tool and to ensure endangered reef portions were properly targeted and protected. * Coupled physical and biological parameters were included in a spatial Health Status Index (HI). A spatial and temporal mapping survey of the HI showed a continuous deterioration of the reef's state of health, particularly in its central part. This degradation correlates with the colonization of the Pacific oyster Crassostrea gigas and with increasing silt deposits on the reef. * A combination of several factors is likely to explain such rapid reef deterioration: (1) an increase in trophic competition between cultivated and wild suspension-feeders that is detrimental to the annelids; (2) a modification in the hydrodynamics and consequently in sedimentary patterns leading to an increase in silt deposition; and most importantly (3) an increase in recreational harvesting of oysters and associated reef trampling, resulting in reef fragmentation. * Understanding the parameters that influence the reef dynamics is necessary in order to help efficient and effective management and policy focusing on the conservation status of large biogenic structures. Copyright © 2011 John Wiley & Sons, Ltd.
    Mots-clés : biogenic reef, biological indicator, health status, recreational fishing activities, Sabellaria alveolata, shellfish farming.
  • Didolot F.« Les attentes des forestiers du plateau de Millevaches », Forêt Entreprise, 197, p. 26-29.
  • Didolot F.« Savoir écouter pour être entendu », Forêt Entreprise, 197, p. 30-34.

  • Dufraisse Alexa, Chrzavzez Julia, Henry Auréade, Paradis-Grenouillet Sandrine et Théry-Parisot Isabelle« Charcoal analysis and wood diameter : inductive and deductive methodological approaches for the study of firewood. », Saguntum, 11, p. 31-32. https://hal.archives-ouvertes.fr/hal-00958346.
    Mots-clés : experimentation, firewood management, modeling, wood diameter.


  • Etienne Samuel, Buckley Mark, Paris Raphaël, Nandasena Aruna K., Clark Kate, Strotz Luke, Chagué-Goff Catherine, Goff James et Richmond Bruce« The use of boulders for characterising past tsunamis: Lessons from the 2004 Indian Ocean and 2009 South Pacific tsunamis », Earth-Science Reviews, 107 (1–2), p. 76-90. (The 2009 South Pacific tsunami). DOI : 10.1016/j.earscirev.2010.12.006. http://www.sciencedirect.com/science/article/pii/S0012825210001820.
    Résumé : Tsunamis are high energy events capable of transporting extremely heavy loads including boulders. We compare boulder deposits created by two modern tsunami events, the 2004 Indian Ocean and the 2009 South Pacific tsunamis, where the boulder sources were in similar topographic settings, and for which we have accurate data on the wave characteristics. Boulder distribution, preferential orientation and numerical simulation of boulder transport are discussed. A comparison between the impacts of the South Pacific and Indian Ocean tsunamis shows similar characteristics, such as limited landward extent and the absence of landward fining. Differences between the results from modelling and field data are most probably caused by variables such as coastal plain roughness (buildings, trees), microtopography, particle shape, and boulder collision during transport that are summarised as coefficients in the mathematical models. Characterising modern events through coarse sediment deposits provides valuable information to help identify and interpret palaeo-tsunami imprints on coastal landscapes.
    Mots-clés : boulder deposit, geomorphology, Indonesia, Samoa, transport simulation, Tsunami.


  • Giachetti Thomas, Burgisser Alain, Arbaret Laurent, Druitt T. et Kelfoun Karim« Quantitative textural analysis of Vulcanian pyroclasts (Montserrat) using multi-scale X-ray computed microtomography: comparison with results from 2D image analysis », Bulletin of Volcanology / Bull Volcanic Eruptions, 73 (9), p. 1295-1309. DOI : 10.1007/s00445-011-0472-1. https://hal-insu.archives-ouvertes.fr/insu-00597327.
    Résumé : X-ray computed microtomography (μCT) was carried out on four pyroclasts from the 1997 Vulcanian explosions of Soufrière Hills Volcano, Montserrat. Three-dimensional data from multiple image stacks with different spatial resolutions (0.37, 4-8, and 17.4 μm px−1) were combined to generate size distributions of vesicles, inter-vesicle throats, crystals, and Fe-Ti oxides over a 3.4-860-μm size range, and to compare the results with those obtained by 2D image analysis on the same samples. Qualitative textural observations are in good agreement with those made in 2D, but μCT provides better resolution of textural features and spatial relationships. Calculation of size distributions requires automated decoalescence of the connected vesicle network. Problems related to this process, in part due to the high porosity of pumice, result in potential artefacts in the calculated size distributions, which are discussed in detail. The main modes of the 3D vesicle volume distributions are systematically shifted to larger sizes compared with those of the 2D distributions. Sample total vesicularities obtained in 3D are within 13 vol.% of those found in 2D, and within 10 vol.% of those measured by He-pycnometry. Total number densities of vesicles and Fe-Ti oxides from the two methods are consistent only to the first order, 3D values ranging from 37% to 309% of those in 2D. Vesicle coalescence, investigated by examining inter-vesicle throat size distributions, occurred in all pyroclasts between neighbouring vesicles of many sizes. The larger the vesicle, the more connected it is.
    Mots-clés : Coalescence, Montserrat, Soufrière Hills Volcano, Vesicle number density, Vesicle size distribution, Vulcanian explosions, X-ray computed microtomography.

  • Giachetti Thomas, Paris Raphael, Kelfoun Karim et José Pérez Torrado Francisco« Numerical modelling of the tsunami triggered by the Güìmar debris avalanche, Tenerife (Canary Islands): comparison with field-based data », Marine Geology, 284, p. 189-202. https://hal.archives-ouvertes.fr/hal-00599383.


  • Girard François, Vennetier Michel, Guibal Frédéric, Corona Christophe, Ouarmim Samira et Herrero Asier« Pinus halepensis Mill. crown development and fruiting declined with repeated drought in Mediterranean France », European Journal of Forest Research, 131 (4), p. 919-931. DOI : 10.1007/s10342-011-0565-6. http://www.springerlink.com/index/10.1007/s10342-011-0565-6.


  • Godet Laurent, Fournier Jérôme, Jaffré Mikaël et Desroy Nicolas« Influence of stability and fragmentation of a worm-reef on benthic macrofauna », Estuarine, Coastal and Shelf Science, 92 (3), p. 472-479. DOI : 10.1016/j.ecss.2011.02.003. http://www.sciencedirect.com/science/article/pii/S0272771411000448.
    Résumé : In coastal areas, reef-builder worms often are bio-engineers by structuring their physical and biological environment. Many studies showed that this engineering role is determined by the densities of the engineer species itself, the highest densities approximately corresponding to the most stable areas from a sedimentological point of view, and hosting the richest and the most diverse benthic fauna. Here, we tested the potential influence of the spatio-temporal dynamics and the spatial fragmentation of one of the largest European intertidal reefs generated by the marine worm Lanice conchilega (Pallas, 1766) (Annelida, Polychaeta) on the associated benthic macrofauna. We demonstrated that the worm densities do have a significant positive role on the abundance, biomass, species richness and species diversity of the benthic macrofauna and that the reef stability also significantly influences the biomass and species diversity. Moreover, the reef fragmentation has significant negative effects on the abundance, biomass and species richness. In addition to L. conchilega densities, the stability and the spatial fragmentation of the reef also significantly structure the associated benthic assemblages. This study demonstrates the interest of “benthoscape ecology” in understanding the role played by marine engineer species from a spatial point of view.
    Mots-clés : Bay of the Mont-Saint-Michel, fragmentation, Reefs, stability, tidal flats, zoobenthos.

  • Guyot Sylvain« The eco-frontier paradigm: rethinking the links between space, nature and politics », Geopolitics, 16 (3), p. 675-706. https://hal.archives-ouvertes.fr/hal-00520673.
    Résumé : There is a gap in the geographical/geopolitical literature about the process that motivates humans to conquer a boundless, timeless and invaluable wilderness in the name of plural ecologies to serve their own political interests in control and territory building by means of ‘green gerrymandering'. The ecological frontier (or eco-frontier), a neologism produced by a contemporary greened civil society, can be considered a new paradigm that embraces the mental representations and spatial constructions of eco-conquest without restricting its temporal dimension to the present time. Indeed, the eco-frontier is a genealogical paradigm where new dynamics always revisit old processes. The creation and use of the eco-frontier can illuminate the history of the global territorialisation of nature in the last three centuries. From a spatial point of view, two main understandings of the eco-frontier exist. The first characterises virtual and mental imageries of natural spaces of eco-conquest that are strongly associated with Westernised representations of nature. The second considers eco-frontiers as geographical processes to understand the green dynamics of territorial appropriation and re-conquest. As a genealogical paradigm, the eco-frontier has a specific temporal dynamic that integrates the different historical contexts and political ideologies of nature. Three generations of eco-frontiers (Empire, Geopolitical and Global generations) began at different times and co-exist today, with superposition and percolation. This empirical study shows how contemporary environmentalists and green stakeholders produce specific discourses and representations on global eco-frontiers. The paper focuses on the current territorial domination carried out by contemporary eco-conquerors creating possible new geopolitics.
    Mots-clés : eco-frontier, Eco-politics, nature, space, territory.

  • Guyot Sylvain« The Instrumentalization of Participatory Management in Protected Areas: The ethnicization of participation in the Kolla-Atacameña Region of the Central Andes of Argentina and Chile », Journal of Latin American Geography, 10 (2), p. 09-39. https://hal.archives-ouvertes.fr/hal-00764103.

  • Guyot-Téphany Josselin, Grenier Christophe, Cléder Emmanuel et Orellana Daniel« Mobility patterns and use of space in Galapagos », GALAPAGOS REPORT 2011-2012, p. 52. http://galapagospark.gob.ec/documentos/ciencia/GalapagosReport_2011-2012.pdf#page=52.

  • Joly Stéphane, Mercey Florent, Filippini Anne, Abenzoar Valérie, Liard Morgane et Poupon Fréderic« Un nouvel habitat du Bronze final IIIb dans le Val d’Orléans et ses traces de métallurgie du fer: Bonnée, Les Terres à l’Est du Bourg (Centre, Loiret) », Revue archéologique du Centre de la France, 50, p. 1-43. http://racf.revues.org/1565.


  • Le Cam Jean-Benoit, Fournier Jérôme, Etienne Samuel et Couden Jérôme« The strength of biogenic sand reefs: Visco-elastic behaviour of cement secreted by the tube building polychaete Sabellaria alveolata, Linnaeus, 1767 », Estuarine Coastal and Shelf Science, 91 (2), p. 333-339. DOI : 10.1016/j.ecss.2010.10.036. https://hal.archives-ouvertes.fr/hal-00565092.
    Résumé : Mechanical properties of the biomineralised cement from tube-building marine worms are poorly known. Secreted from an organ connected to the polychaetes specialised glands, the cement glues sand grains and calcareous shell fragments of a given size and, on a larger scale, ensures the resistance of the reef to waves. In this study, three kinds of mechanical tests were performed with worm tubes to establish the nature of the cement behaviour. Results obtained show that cement behaves like a visco-elastic material. This property allows the tubes to dissipate the mechanical energy from the waves to which they are subject and to reduce the mechanical stress transmitted inside the tubes to the polychaetes. Comparison of “fresh” and “dry” cements highlights that the visco-elastic behaviour of the cement is maintained after five years. The viscosity of the cement is therefore not related to moisture but to its chemical composition. More generally, these results offer a better understanding of the role of cement on worm reefs strength and their persistence in the geological record.
    Mots-clés : biogenic reef, biogeomorphology, mechanical behaviour, Sabellaria alveolata, visco-elasticity.

  • Leone Frédéric, Lavigne Franck, Paris Raphael et Denain Jean-Charles« A spatial analysis of the December 26th, 2004 tsunami-induced damages: lessons learned for a better risk assessment integrating buildings vulnerability. », Applied Geography, 31 (1), p. 363-375. https://hal.archives-ouvertes.fr/hal-00539789.
  • Linton Jamie« Fountains of Youth: resurrecting beaches and drinking fountains reflects a change in our relationship with water. », Alternatives Journal, 37 (1), p. 8-11.
  • Linton Jamie et Brooks David B.« Governance of transboundary aquifers: new challenges and new opportunities », Water International, 36 (5), p. 606-618.


  • Lopez Saez Jérôme, Corona Christophe, Stoffel Markus, Astrade Laurent, Berger Frédéric et Malet Jean-Philippe« Dendrogeomorphic reconstruction of past landslide reactivation with seasonal precision: the Bois Noir landslide, southeast French Alps », Landslides, p. 189-203. DOI : 10.1007/s10346-011-0284-6. http://www.springerlink.com/index/10.1007/s10346-011-0284-6.


  • Lopez Saez Jérôme, Corona Christophe, Stoffel Markus, Gotteland A., Berger Frédéric et Liébault F.« Debris-flow activity in abandoned channels of the Manival torrent reconstructed with LiDAR and tree-ring data », Natural Hazards and Earth System Science, 11, p. 1247-1257. DOI : 10.5194/nhess-11-1247-2011. http://www.nat-hazards-earth-syst-sci.net/11/1247/2011/.


  • Lopez Saez Jérôme, Corona Christophe, Stoffel Markus, Rovéra Georges, Astrade Laurent et Berger Frédéric« Mapping of erosion rates in marly badlands based on a coupling of anatomical changes in exposed roots with slope maps derived from LiDAR data », Earth Surface Processes and Landforms, 36 (9), p. 1162-1171. DOI : 10.1002/esp.2141. http://doi.wiley.com/10.1002/esp.2141.

  • Masseret Estelle, Banack Sandra, Boumediene Farid, Abadie Eric, Brient Luc, Vaquer A., Morales Raul, Pageot Nicholas, Metcalf James, Cox Paul et Camu William« Detection of BMAA in the marine environment of a sporadic ALS cluster in southern France », Amyotrophic Lateral Sclerosis and Other Motor Neuron Disorders, 12 (sup.1), p. 21. https://hal-univ-rennes1.archives-ouvertes.fr/hal-01119043.
    Mots-clés : BMAA, cluster, standardized incidence rate.

  • Miras Yannick, Guenet Pascal et Richard Hervé« Holocene vegetation, landscape, and reconstruction of human activity from Prehistory to Roman times based on new pollen data performed in ”the plateau de Millevaches” (Limousin, Massif central, France). », Quaternaire, 22 (2), p. 147-164. https://hal.archives-ouvertes.fr/hal-00601410.
    Résumé : New pollen analyses from four peat bogs and fens located on the plateau de Millevaches (Limousin, French Massif Central) are compared with one peat sequence situated at lower altitude in the northern Limousin (Mont d'Ambazac). This study, which is supported by eleven accepted AMS radiocarbon data, was undertaken to consider changes in regional vegetation from the beginning of the Holocene and to provide a first reconstruction of land-use history. A singular vegetation history characterizes the "plateau de Millevaches" from the center of the French Massif Central such as the simultaneous start of Corylus and Quercus dated from ca. 10560-10150 cal. BP (ca. 8550-8200 cal. BC). The composition of the forest cover remained largely unchanged with a large supremacy of Corylus in the regional vegetation until ca. 8050-7650 cal. BP (ca. 6100-5700 cal. BC) when the decline of Corylus was synchronous with the expansion of Quercus. The diversified oak woodlands were rapidly filled by Tilia, and pollen data indicate early Neolithic farming around 6600-6500 cal. BP (ca. 4600-4500 cal. BC). The installation of Fagus, which is dated about 5660-5300 cal. BP (ca. 3700-3400 cal. BC), occurs nearly 700 years later than in neighbouring Auvergne. The first oak and beech forests spread after ca. 4800-4400 cal. BP (ca. 2850-2450 cal. BC), and Fagus constitutes the dominant arboreal taxa in the regional vegetation only since ca. 3900-3550 cal. BP (ca. 1930-1530 cal. BC). While climatic factors may have played a major role in its delayed installation, these new pollen analyses provide the first pollen evidence of an anthropogenic factor particularly for the late Neolithic - early Bronze Age transition when increased human pressure (woodland clearances and presence of agricultural and grazing indicators) is evidenced. Different stages related to human activities are shown for the following periods. According to the pollen data, between ca. 2350-2100 cal. BP (ca. 400-150 cal. BC), the second Iron Age, and more particularly, the 4th-2nd centuries BC, represents an important threshold in the shaping of this medium mountain cultural landscape. Large beech-oak forest clearances are related to an important agropastoral extension which continues to increase during the beginning of the Roman period.
    Mots-clés : HOLOCENE, HUMAN IMPACT, Massif Central, palaeoenvironment, pollen, vegetation history.

  • Nandasena N.A.K., Paris Raphael et Tanaka Norio« Reassessment of hydrodynamic equations to initiate boulder transport by high energy events (storms, tsunamis) », Marine Geology, 281, p. 70-84. https://hal.archives-ouvertes.fr/hal-00579508.

  • Nandasena Nak, Paris Raphael et Tanaka Norio« Numerical assessment of boulder transport by 2004 Indian Ocean tsunami in Lhok Nga, West Banda Aceh (Sumatra, Indonesia) », Computers and Geosciences, 37, p. 1391-1399. https://hal.archives-ouvertes.fr/hal-00614701.


  • Paris Raphaël, Giachetti Thomas, Chevalier Joël, Guillou Hervé et Franck Norbart« Tsunami deposits in Santiago Island (Cape Verde archipelago) as possible evidence of a massive flank failure of Fogos volcano », Sedimentary Geology, 239 (3-4), p. 129-145. DOI : 10.1016/j.sedgeo.2011.06.006. https://hal.archives-ouvertes.fr/hal-00682476.
    Mots-clés : Cape Verde, Fogo volcano, Marine conglomerate, Tsunami, Volcano instability.

  • Paris Raphael, Naylor Larissa et Stephenson Wayne« Boulders as a signature of storms on rock coasts », Marine Geology, 283, p. 1-11. https://hal.archives-ouvertes.fr/hal-00591764.


  • Poiraud Alexandre et Defive Emmanuelle« Morphology and geomorphological significance of relict landslides in the Tertiary basin of Puy-en-Velay (Massif Central, France) », Géomorphologie : Relief. Processus. Environnement, 3, p. 247-260. (Rythmes et temporalités en géomorphologie : de l’évolution des volumes de relief à la reconstitution d’événements instantanés). DOI : 10.4000/geomorphologie.9455. https://hal.archives-ouvertes.fr/hal-01087897.
    Résumé : The study of a set of relict landslides in the Tertiary basin of Puy-en-Velay (Massif Central, France) provides information about the types of landslide that affect a part of the hillslopes and the predisposing factors controlling their pattern. Two clusters of landslides were defined, located in similar morphostructural contexts, but characterised by basaltic covers of different ages. The first factor controlling pattern was lithological, in particular the occurrence of two sandy-clay geological formations. One, 'Sables de la Laussonne', is an Oligocene formation, and the other corresponds to the sandy-clay fraction of a Quaternary formation. The second factor was the age of the basaltic cover, which controls the degree of catchment dissection. The ‘old’ catchments are most strongly widening, with a more differentiate topography than younger ones, and the density of relict landslides was greater in these catchments. The main type in the set of relict landslides seems to be complex slides with a rotational component at the top and a slow-moving earthslide making up the body. So far we cannot advance any firm hypothesis about the kinetics of these landslides. These relict landslides constitute major processes underlying basaltic scarp back-tilting in the basin and are a key factor in catchment geomorphology development.

  • Rouvellac Éric, Dellier Julien et Guyot Sylvain« Entre terroir et territoires. La renaissance du vignoble sud-africain », Espace géographique, 40 (4), p. 337-351. https://hal.archives-ouvertes.fr/hal-00764104.

  • Rovera Georges, Corona Christophe et Lopez Saez Jérôme« High resolution, quantitative reconstruction of erosion rates based on anatomical changes in exposed roots at Draix, Alpes de Haute-Provence - critical review of existing approaches and independent quality control of results », Geomorphology, 125, p. 433-444. https://hal.archives-ouvertes.fr/hal-00818480.
    Résumé : Extensive areas of French Alps are underlain by Jurassic black marls. Wherever these "terres noires" crop out they become subject to intense erosion, causing major sedimentation in regional reservoirs and river systems. In the badlands near Draix (Alpes de Haute-Provence, France), measured sediment rates were obtained at the plot scale by surface elevation change-based methods and at the catchment scale by monitoring sedimentation in dams. In this study, we use a dendrogeomorphic approach based on anatomical changes in exposed roots of Pinus sylvestris L. to accurately quantify continuous denudation rates. A total of 123 cross sections (75 from buried and 48 from exposed roots of 23 trees) were sampled in the Moulin basin. The size and position of roots at the time of exposure was determined via anatomical variations in the annual growth rings of roots. In cross sections of buried roots, a sharp reduction of earlywood tracheid lumen area - a growth signature which has traditionally been used to determine the moment of root denudation - was observed as soon as erosion reduced soil cover to < 3 cm. As a consequence, estimates of eroded soil thickness had to be adjusted to take account of this bias. Bias-adjusted, averaged, medium term erosion rates derived from exposed roots vary between 6 and 7 mm y-1 at Moulin basin depending on the importance accorded to the uplift of roots after exposure. values are significantly correlated to slope angle and match with erosion rates derived from monitored iron stakes (5.7 mm y-1) or measurements of sediment yield in retention dams. (4.7 mm y-1) at the outlet of the Moulin basin. Besides demonstrating that the interpretation of anatomical signatures in tree roots to erosion have to be revised, this paper also shows that dendrogeomorphic analyses of roots are indeed a powerful tool for the quantification of minimal rates of soil erosion in environments where measurements of past activity are not available.
    Mots-clés : badlands, black marls, Dendrogeomorphology, earlywood tracheids, Erosion rates, Exposed roots, Pinus sylvestris L, Pinus sylvestris L..

  • Rovera Georges, Corona Christophe et Lopez Saez Jérôme« Quantification des vitesses d'érosion par dendrogéomorphologie : utilisation des racines déchaussées dans les badlands marneux des bassins expérimentaux de Draix (Alpes de Haute-Provence) », Géomorphologie : Relief. Processus. Environnement, 1, p. 83-94. https://hal.archives-ouvertes.fr/hal-00818479.
    Résumé : Les marnes noires du Jurassique couvrent de vastes surfaces dans les Alpes françaises du Sud. Partout où elles affleurent, elles sont sujettes à une érosion intense à l'origine de problèmes de sédimentation dans les cours d'eau et d'envasement dans les réservoirs hydro-électriques. Dans les badlands de Draix (Alpes de Haute-Provence), les vitesses d'érosion obtenues par différentes méthodes de mesure atteignent 5 à 10 mm/a. Dans cette étude, les mesures d'érosion quantifiées au moyen d'une approche dendrogéomorphologique sont validées par comparaison avec celles issues du suivi micrométrique d'un réseau de 47 tiges métalliques. Trente-neuf racines de Pinus sylvestris L. déchaussées ont été échantillonnées dans le bassin-versant du Moulin (8 ha) et l'impact de la dénudation sur les variations anatomiques des cernes annuels de croissance a été mesuré. L'année de déchaussement a pu être déterminée via l'étude de la diminution très rapide, de l'ordre de 60%, de la surface du lumen des trachéides. Les vitesses d'érosion mesurées au moyen de la dendrogéomorphologie atteignent en moyenne 5 mm/an et montrent une corrélation significative [r²(d)=0,39] mais non exclusive avec la pente locale. Elles concordent avec celles obtenues à partir de mesures micrométriques (5,7 mm/a en moyenne) et par cubages réalisés à l'exutoire du bassin-versant (4,7 mm/a). Dés lors, cette approche offre des perspectives particulièrement intéressantes pour quantifier et spatialiser rapidement les vitesses d'érosion moyennes sur plusieurs décennies, dans des bassins versants non instrumentés.
    Mots-clés : badlands, dendrogéomorphologie, micrométrie, racines, vitesse d'érosion.


  • Saulnier Mélanie, Edouard Jean-Louis, Corona Christophe et Guibal Frédéric« Climate/growth relationships in a Pinus cembra high-elevation network in the Southern French Alps », Annals of Forest Science, 68 (1), p. 189-200. DOI : 10.1007/s13595-011-0020-3. http://www.springerlink.com/index/10.1007/s13595-011-0020-3.

  • Vallat Pierre et Cabanis Manon« La viticulture antique dans le bassin de Clermont-Ferrand (Puy-de-Dôme) », Gallia, 68 (1), p. 237-255. (Archéologie de la France antique). https://hal.archives-ouvertes.fr/hal-01130135.
    Mots-clés : AUVERGNE, romain, viticulture.
2010


  • Albert Pèlachs, Julià Ramón, Pérez-Obiol Ramon, Soriano Joan Manuel, Bal Marie-Claude, Raquel Cunill et Catalan Jordi« Potential influence of Bond events on mid-Holocene climate and vegetation in southern Pyrenees as assessed from Burg lake LOI and pollen records », The Holocene, 21, p. 95-104. DOI : 10.1177/0959683610386820. https://hal-unilim.archives-ouvertes.fr/hal-01126722.
    Résumé : Superimposed on the long-term climate variability attributed to orbital forcing, there are other modes of variability covering timescales from interannual to millennial throughout the Holocene. Their signatures in climate proxy archives can differ substantially because of their lower magnitude and regional diversity. However, if identified they can yield better understanding of the physical mechanisms regionally linking causes and effects. Here we describe a high-resolution record of organic matter accumulation in the sediments of Burg lake (Pyrenees, NE Iberian Peninsula), as assessed using loss on ignition (LOI), and compare it with the ice rafted debris (IRD) indexes from the North Atlantic. The LOI record indicates two main phases in the water body, a lacustrine phase as a shallow lake and a palustrine phase as a fen. The latter covers the period 2600–7200 cal. yr BP and within it there is a high coherence between LOI and IRD, which indicates submillennial climate fluctuations in the Pyrenees that can be related to the North Atlantic influence. The Burg’s LOI record suggests wetter (and occasionally colder) situations in the Pyrenees during high IRD in the Atlantic (Bond oscillations). These fluctuations would likely affect the snow covered period in the mountains (winter and spring seasons) the most, the period in which Atlantic westerlies currently have higher influence on precipitation over the Pyrenees. These climatic oscillations could have favoured Abies penetration during the mid Holocene, as evidenced by increased pollen percentages of this taxon during low IRD values (drier conditions). The pollen record also suggests potential relationships between climate and human activity as early as at mid Holocene, as human-related cereals increase during all the low IRD periods. The human signature (charcoal, cereals) becomes particularly evident at around 2800 cal. yr BP; in this oscillation Pinus overtake Abies in the conifer response to low IRD.
    Mots-clés : Abies, climate change, HUMAN IMPACT, North Atlantic, palaeoclimate, palynology.

  • Alfonso Guy, Clémençon Bernard et Rémy B« Découverte d’une dédicace au Numen impérial et au deus Maro Mocons ou au deus Maromocons Victor à Clermont-Ferrand », Bulletin historique et scientifique de l’Auvergne, 111 (786-787), p. 59-73. https://hal.archives-ouvertes.fr/hal-01131890.
    Mots-clés : clermont-ferrand, dédicace, romain.

  • Allée Philippe, Paradis Sandrine, Boumédiène Farid et Rouaud Romain« L'exploitation médiévale du plomb argentifère sur le mont Lozère : archéologie spatiale d'un territoire proto-industriel montagnard », ArchéoSciences, 34, p. 117-186. https://hal.archives-ouvertes.fr/hal-00958353.

  • André Marie-Françoise et Phalip Bruno« Evaluating rates of stone recession on Mediaeval monuments : Some thoughts and methodological perspectives. », Cadernos do Laboratorio Xeolóxico de Laxe, 35, p. 13-40. https://hal.archives-ouvertes.fr/hal-01115128.
    Mots-clés : cultural heritage, geomorphology and weathering.


  • Bal Marie-Claude, Rendu Christine, Ruas Marie-Pierre et Campmajo Pierre« Paleosol charcoal: reconstructing vegetation history in relation to agro-pastoral activities since the Neolithic. A case study in the Eastern French Pyrenees », Journal of Archaeological Science, 37, p. 1785–1797. DOI : 10.1016/j.jas.2010.01.035. https://hal-unilim.archives-ouvertes.fr/hal-01126681.
    Résumé : This article uses a method that combines pedoanthracological and pedo-archaeological approaches to terraces, complemented with archaeological pastoral data, in order to reconstruct the history of ancient agricultural terraces on a slope of the Enveitg Mountain in the French Pyrenees. Four excavations revealed two stages of terrace construction that have been linked with vegetation dynamics, which had been established by analyses of charcoal from the paleosols and soils of the terraces. Pedo-archaeological descriptions of these terrace soils reveal their ancient origins and their long-term use. Their chronology was established by radiocarbon dating of single charcoal fragments and charcoal lenses originating in the paleosols. Combining radiocarbon dating with pedo-archaeology resulted in a more reliable chronology. Moreover, the Bronze Age was found to be a crucial period in the history of land-use. This study also highlights the role of fire in the construction of this land-use pattern.
    Mots-clés : Agricultural, charcoal, dynamics, Paleosol, Pastoralism, Taphonomy, terraces, vegetation.

  • Beaurain Christophe, Maillefert Muriel et Petit Olivier« Capitalisme raisonnable et développement durable: quels apports possibles à partir de l’institutionnalisme de John‎‏ R. Commons? », Revue Interventions économiques. Papers in Political Economy, 42. http://interventionseconomiques.revues.org/1227.

  • Beaurain Christophe, Maillefert Muriel et Petit Olivier« Capitalisme raisonnable et développement durable : quels apports possibles à partir de l’institutionnalisme de John R. Commons ? », Interventions économiques / Papers in Political Economy. https://hal.archives-ouvertes.fr/hal-01130315.
    Mots-clés : développement durable, institutionnalisme, risques.

  • Belingard Christelle, Paradis-Grenouillet Sandrine, Rouaud Romain et Allee Philippe« Exploitation à visée archéo-environnementale des patrons de croissance des bois prélevés pour la datation du bâti », Collection Edytem, 11, p. 149-156. http://hal.archives-ouvertes.fr/hal-00933789.
    Résumé : The framework of the oval barn of La Rivière farm, at Saint-Eloy-les-Tuileries in Corrèze, has been dated by dendrochronology in the context of an operation of preservation that took place in 2007 and 2008. The analysis shows that the 21 dated timbers are chestnut wood cut down during the winter of 1569. This set of timbers provides a unique source of information on the management of Limousin chestnut woods for a very poorly documented period, and the interpretation of these tree ring archives in an archaeo-environmental perspective is contemplated. In 2008, this project is integrated into a CRP supervised by Géolab, that already includes a chapter about the recent history of Limousin chesnut woods (CRP 'Geohistory and geoarchaeology of Limousin timberlands'). The growth of the barn's beams is compared to that of current chestnut trees representing the three types of stands available today in Limousin: the coppice, the forest and the orchard. The aim is to discover in which kind of wooded lands the beams have been cut. The results indicate that the barn's timbers probably come from own-rooted trees which grew in a forest environment and were felled on a fairly wide area. The archaeo-environmental potential of ancient timbers sampled for the dating of buildings is also discussed.
    Mots-clés : Castanea sativa, dendroarchéologie, dendroécologie, histoire des forêts, Limousin.


  • Beylich Achim A., Lamoureux Scott F., Decaulne Armelle, Dixon John C., Orwin John F., Otto Jan-Christoph, Overeem Irina, Sæmundsson Þorsteinn, Warburton Jeff et Zwolinski Zbigniew« Sedimentary Fluxes and Budgets in Changing Cold Environments: The Global Iag/Aig Sediment Budgets in Cold Environments (sedibud) Programme », Geografiska Annaler: Series A, Physical Geography, 92 (2), p. 151-153. DOI : 10.1111/j.1468-0459.2010.00386.x. http://onlinelibrary.wiley.com/doi/10.1111/j.1468-0459.2010.00386.x/abstract.

  • Bouvart Patrick, Paloumbas Dimitri et Belingard Christelle« L’évolution du bâti urbain à Uzerche (Corrèze) : l’exemple de la porte Bécharie et de l’hôtel Clédat (XIVe-XXe s.). », Travaux d'archéologie limousine, 30, p. 107-127. https://hal-unilim.archives-ouvertes.fr/hal-01126751.
    Résumé : La porte Bécharie et l’hôtel Clédat sont situés à l’entrée de la vieille ville d’Uzerche. Classés au titre des Monuments Historiques le 6 mai 1907, les bâtiments font actuellement l’objet d’un projet de sauvegarde. L’intérêt que présente cet ensemble architectural a conduit le Service régional de l’Archéologie (SRA) du Limousin à prescrire une étude préalable qui, confiée au bureau Hadès, a associé une recherche historique, une analyse archéologique des élévations, des sondages et des datations par dendrochronologie. L’évolution des constructions peut se décomposer en neuf phases comprises entre le début du XIVe et le XXe siècle. L’aménagement du site étudié débute avec l’établissement d’une chaussée. Il se poursuit avec la construction d’une porterie (peut-être une tourporte flanquée d’une courtine). Ce dispositif défensif pourrait correspondre à une extension de l’enceinte urbaine d’Uzerche, intégrant un faubourg au cours de la période médiévale. Deux édifices sont ensuite adossés (dont l’un est précisément daté de l’année 1366) mais leurs fonctions primitives demeurent inconnues. L’ensemble subit une importante démolition, probablement à la fi n du XIVe siècle. Lorsque les constructions sont relevées au XVe siècle, la porte et l’un des édifices pourraient appartenir aux Pradel, se disant alors seigneurs de la porte Barrachaude. L’autre édifice, celui de 1366, est restauré entre 1465 et 1530. Il est peut-être, à ce moment-là, la propriété de l’un des membres de la famille Clédat. Le contexte des guerres de Religion entraîne une seconde phase de démolition. Lors des reconstructions du début du XVIIe siècle, les bâtiments sont réunis en une seule propriété, vraisemblablement par la famille Clédat qui, de la bourgeoisie marchande d’Uzerche, intègre alors la noblesse. Les phases ultérieures correspondent surtout à des aménagements.
    Mots-clés : Corrèze enceinte urbaine habitat seigneurial hôtel particulier porte de ville Uzerche XIVe, XVe, XVIe, XVIIe s..

  • Chenet Marie, Roussel Erwan, Jomelli Vincent et Grancher Delphine« Asynchronous Little Ice Age glacial maximum extent in southeast Iceland », Geomorphology, 114 (3), p. 253-260. https://hal.archives-ouvertes.fr/hal-00449570.
    Résumé : The Little Ice Age (LIA) maximum glacial extent of 13 glaciers located in SE Iceland was dated by lichenometry to check for intraregional variations. Different lichenometric approaches were applied to date maximum LIA moraines, and they all showed high variability between glaciers. According to the Extreme Value Theory and Bayesian approach, LIA advances in the region occurred in or around A.D. 1740–1760, A.D. 1810–1820 and A.D. 1840–1880 with confidence intervals of between 8 and 21 years. The dates were correlated with geomorphic characteristics of glacier tongues: hypsometric and slope parameters can be considered as determining factors in the variability of glacier timing during the LIA, as previously observed in Norway and in the Alps. In terms of timing, results obtained in SE Iceland were similar to those obtained for other glacier regions around the North Atlantic.
    Mots-clés : Dating, Glacier, Iceland, Lichenometry, Little Ice Age.


  • Conway S. J., Decaulne A., Balme M. R., Murray J. B. et Towner M. C.« A new approach to estimating hazard posed by debris flows in the Westfjords of Iceland », Geomorphology, 114 (4), p. 556-572. DOI : 10.1016/j.geomorph.2009.08.015. http://www.sciencedirect.com/science/article/pii/S0169555X09003729.
    Résumé : The aim of this study is to improve the assessment of hazard posed by debris flows to the people and settlements of Northwest Iceland by studying very recent examples from above the town of Ísafjörður and other nearby localities. Debris flows are a recognised hazard in the region: above Ísafjörður, they occur with particularly high frequency and have appreciable volumes (up to 14 000 m3). We have used airborne laser altimeter (LiDAR) and differential Global Positioning System (GPS) data to produce isopach maps of flows that occurred in 1999, 2007, and 2008. Our data show that these flows begin depositing at higher slope gradients and are also more mobile than hillslope debris flows reported by other authors. Above a 19° slope, erosion is initiated independent of the distance along the flowpath. Using the isopach maps and associated field observations, we have found a relationship between ground slope and patterns in deposition volume. We have used this finding as a basis for an empirical model that enables an estimate of the total travel distance and final thickness of future debris flows to be calculated. This has enabled us to identify areas of the town which are at risk; some of these are not obvious without this analysis. This model is notable for its simplicity, which allows future debris flow characteristics to be predicted without the need to determine the precise fluid dynamic parameters of the flow such as viscosity and velocity, which are required to implement more complex models.
    Mots-clés : Debris flow, Geohazards, Icelandic Westfjords, LiDAR.

  • Corenblit Dov, Steiger Johannes et Delmotte Sébastien« Abiotic, residual and functional components of landforms », Earth Surface Processes and Landforms, 35 (14), p. 1744–1750. http://onlinelibrary.wiley.com/doi/10.1002/esp.2064/full.


  • Corenblit Dov, Steiger Johannes et Tabacchi Eric« Biogeomorphologic succession dynamics in a Mediterranean river system », Ecography, 33 (6), p. 1136–1148. DOI : DOI: 10.1002/rra.2618. http://onlinelibrary.wiley.com/doi/10.1111/j.1600-0587.2010.05894.x/full.


  • Corona C., Guiot J., Edouard J. L., Chalié F., Büntgen U., Nola P. et Urbinati C.« Millennium-long summer temperature variations in the European Alps as reconstructed from tree rings », Climate of the Past, 6 (3), p. 379-400. DOI : 10.5194/cp-6-379-2010. http://www.clim-past.net/6/379/2010/.


  • Corona Christophe, Rovéra Georges, Lopez Saez Jérôme, Stoffel Markus et Perfettini Pascal« Spatio-temporal reconstruction of snow avalanche activity using tree rings: Pierres Jean Jeanne avalanche talus, Massif de l'Oisans, France », Catena, 83 (2-3), p. 107-118. DOI : 10.1016/j.catena.2010.08.004. http://linkinghub.elsevier.com/retrieve/pii/S0341816210001244.

  • Decaulne Armelle et Sæmundsson Þ.« Distribution and frequency of snow-avalanche debris transfer in the distal part of colluvial cones in Central North Iceland », Geografiska Annaler: Series A, Physical Geography, p. 177-187. https://halshs.archives-ouvertes.fr/halshs-00650231.
    Mots-clés : far distal area, Lichenometry, Northern Iceland, Schmidt hammer, snow-avalanche deposits.


  • Etienne Samuel et Paris Raphaël« Boulder accumulations related to storms on the south coast of the Reykjanes Peninsula (Iceland) », Geomorphology, 114 (1–2), p. 55-70. (Rock Coast Geomorphology). DOI : 10.1016/j.geomorph.2009.02.008. http://www.sciencedirect.com/science/article/pii/S0169555X09000749.
    Résumé : Coastal boulder accumulations are often mentioned in the literature, even though their interpretation remains difficult, especially along rock coasts affected both by storms and tsunamis. Studies on the geomorphic impact of such high-energy events are actually of great interest, since their intensity and frequency are key issues for the future evolution of coasts in the framework of the global change. The southwest coast of Iceland faces the powerful storms of the North Atlantic Ocean, with wave heights of more than 15 m. The probability for past and present tsunamis to hit this coast is very low. In this paper, we describe boulder accumulations along the volcanic rock coast of Reykjanes (southwest Iceland). They consist of cliff-top boulders, clusters and ridges, beaches, and boulder fields. Large boulders, up to 70 t in weight, have been transported and deposited up to 65 m inland (6 masl). The maximum limit of boulder deposition and driftwood was found respectively 210 m and 550 m inland. Storms appear to be a predominant factor in the geomorphic evolution of Reykjanes coasts. Our observations also give new insight for the interpretation of coastal boulder accumulations. Processes of erosion and deposition by tsunamis are a rising topic in the literature, and the effects of recurrent and powerful storms are neglected.
    Mots-clés : Cliff-top boulders, coastal geomorphology, North-Atlantic, Storm deposits, Tsunami.

  • Ettinger S.« Geomorphologic field observations as a tool to improve lahar hazard assessment on the Southwestern flank of Cotopaxi volcano, Ecuador », AGU Fall Meeting Abstracts, 11, p. 1135. http://adsabs.harvard.edu/abs/2010AGUFMNH11B1135E.
    Résumé : Syn-eruptive lahars are a prominent hazard at snow- and ice-clad volcanoes such as Cotopaxi, Ecuador. These large volcanic mudflows follow existing stream channels and often change valley morphology. Assessing lahar hazard at Cotopaxi is based primarily on the study of sediments deposited from past events. This research describes the hazard by using geomorphologic observations to examine deposits and infer emplacement mechanisms and flow dynamics of past lahars. In addition, the morphological characteristics and other topography-related parameters in areas affected by lahars are used to assess the hazard from potential future lahars. Geomorphologic field observations were made in three drainages and the adjacent floodplain on the southwestern flank of Cotopaxi volcano. In this area, many sites of natural exposure of lahar deposits are masked or altered by other surface processes. Deposits were therefore mapped and classified according to their origin as fluvial, torrential or gravitational geoforms. Emphasizing the analysis of torrential (lahar) deposits, the field survey reveals considerable differences in types of deposit and distribution of deposit volume along the longitudinal valley profiles. While sediment quantity decreases downstream in the two Northern drainages, the Southern drainage holds concentrations of large amounts of sediment in the form of lobes between the middle and lower reaches, in proximity of the floodplain. Spatial data analysis shows that the type, morphology and location of the deposits are related to the morphometry of the drainage basin and the channel. The main processes impacting valley and channel morphology during a lahar were classified into three categories: aggradation, incision and widening. Erosional features and spatial distribution of deposits in the valley cross-section and along the longitudinal profile were indicators of timing of emplacement. These observations suggest that an eruptive event at Cotopaxi most likely generates several lahars; each having different sediment-water ratios. Early phases of water-poor flows leave terraces or lobe-shaped deposits. Successive watery flows incise previously deposited material and redistribute outwash farther downstream, reshaping the channel. A comparison of present morphological conditions along the channels of the three drainages revealed common slope, width and deposit volumes that will influence erosion or deposition by future lahars. Erosion and/or deposition in the drainages determine the sediment outflow on the floodplain. Correlating areas of major sediment concentration with specific morphological conditions identified sites of potential sediment storage or bulking risk in all three drainages. Using a geomorphologic approach to assess lahar hazard at Cotopaxi has proven to improve the understanding of the role of drainage morphology in lahar dynamics. Furthermore, the results contribute essential empirical information to developing lahar hazard scenarii for low-lying areas potentially affected by future lahars.
    Mots-clés : [1810] HYDROLOGY / Debris flow and landslides, [1824] HYDROLOGY / Geomorphology: general, [8404] VOLCANOLOGY / Volcanoclastic deposits, [8488] VOLCANOLOGY / Volcanic hazards and risks.


  • Giachetti Thomas, Druitt T., Burgisser Alain, Arbaret Laurent et Galven C.« Bubble nucleation, growth and coalescence during the 1997 Vulcanian explosions of Soufrière Hills Volcano, Montserrat », Journal of Volcanology and Geothermal Research, 193 (3-4), p. 215-231. DOI : 10.1016/j.jvolgeores.2010.04.001. https://hal-insu.archives-ouvertes.fr/insu-00488518.
    Résumé : Soufrière Hills Volcano had two periods of repetitive Vulcanian activity in 1997. Each explosion discharged the contents of the upper 0.5–2 km of the conduit as pyroclastic flows and fallout: frothy pumices from a deep, gas-rich zone, lava and breadcrust bombs from a degassed lava plug, and dense pumices from a transition zone. Vesicles constitute 1–66 vol.% of breadcrust bombs and 24–79% of pumices, all those larger than a few tens of µm being interconnected. Small vesicles (< few tens of µm) in all pyroclasts are interpreted as having formed syn-explosively, as shown by their presence in breadcrust bombs formed from originally non-vesicular magma. Most large vesicles (> few hundreds of µm) in pumices are interpreted as pre-dating explosion, implying pre-explosive conduit porosities up to 55%. About a sixth of large vesicles in pumices, and all those in breadcrust bombs, are angular voids formed by syn-explosive fracturing of amphibole phenocrysts. An intermediate-sized vesicle population formed by coalescence of the small syn-explosive bubbles. Bubble nucleation took place heterogeneously on titanomagnetite, number densities of which greatly exceed those of vesicles, and growth took place mainly by decompression. Development of pyroclast vesicle textures was controlled by the time interval between the onset of explosion–decompression and surface quench in contact with air. Lava-plug fragments entered the air quickly after fragmentation (not, vert, similar 10 s), so the interiors continued to vesiculate once the rinds had quenched, forming breadcrust bombs. Deeper, gas-rich magma took longer (not, vert, similar 50 s) to reach the surface, and vesiculation of resulting pumice clasts was essentially complete prior to surface quench. This accounts for the absence of breadcrusting on pumice clasts, and for the textural similarity between pyroclastic flow and fallout pumices, despite different thermal histories after leaving the vent. It also allowed syn-explosive coalescence to proceed further in the pumices than in the breadcrust bombs. Uniaxial boudinage of amphibole phenocrysts in pumices implies significant syn-explosive vesiculation even prior to magma fragmentation, probably in a zone of steep pressure gradient beneath the descending fragmentation front. Syn-explosive decompression rates estimated from vesicle number densities (> 0.3–6.5 MPa s− 1) are consistent with those predicted by previously published numerical models.
    Mots-clés : Amphibole boudinage, Bubble growth, Bubble nucleation, Coalescence, Soufrière Hills, Vesiculation, Vulcanian explosions.

  • Glomot David« Données écrites, restitutions cartographiques: le traitement des terriers médiévaux à l'aide de SIG », Géocarrefour, 85 (1), p. 67-80. https://halshs.archives-ouvertes.fr/halshs-00489836.
    Résumé : La richesse des informations fournies par les terriers des années 1450-1500 (parcelles, toponymes, propriétaires, utilisation du sol, valeur foncière...) permet de recréer partiellement le paysage de la fin du Moyen Age, et d'en comprendre le fonctionnement socio-économique.
    Mots-clés : ancient land registry, cadastre ancien, GIS, Limousin, mediaeval rural landscape, méthode régressive, Middle Ages, Moyen Age, parcellaire, paysage rural médiéval, regressive method, SIG, terrier.


  • Guiot Joel, Corona Christophe et ESCARSEL members« Growing Season Temperatures in Europe and Climate Forcings Over the Past 1400 Years », PLoS ONE, 5 (4), p. e9972. DOI : 10.1371/journal.pone.0009972. http://dx.plos.org/10.1371/journal.pone.0009972.

  • Guyot Sylvain et Richard Frédéric« LES FRONTS ECOLOGIQUES Une clef de lecture socio-territoriale des enjeux environnementaux ? », Espace Politique. https://hal.archives-ouvertes.fr/hal-00453774.

  • Hall Kevin et André Marie-Françoise« Some further observations regarding " cryoplanation terraces " on Alexander Island », Antarctic Science, 22 (2), p. 175-183. https://hal.archives-ouvertes.fr/hal-01115134.
    Mots-clés : Antarctic., geomorphology.

  • Héritier Stéphane, Arnauld De Sartre Xavier, Laslaz Lionel et Guyot Sylvain« Fronts écologiques : dynamiques spatio-temporelles et dominations multi-scalaires. Proposition d'une grille de lecture des processus de " colonisation écologique " », Espace Politique, 9. https://hal.archives-ouvertes.fr/hal-00453766.
    Résumé : En se fondant sur les articles publiés dans ce numéro spécial, cet article conclusif cherche à proposer une grille de lecture des processus de colonisation écologique qui permette de dépasser les tentations post-coloniales de la notion de front écologique. Pour cela, il commence par apporter des précisions conceptuelles à la notion de front écologique, en lui adjoignant deux dimensions essentielles à sa compréhension. La première dimension est celle de la temporalité des fronts écologiques : ceux-ci apparaissent particulièrement instables, c'est-à-dire en transformations permanente, et ne peuvent de ce fait être appréhendés que dans une perspective de temps long ; la seconde dimension est celle des échelles spatiales auxquelles se décident, se déclinent et prennent sens les phénomènes de colonisations écologiques. Grâce en particulier à ces deux dimensions, il est proposé une grille de lecture des processus de colonisation écologique. Cette grille est construite parallèlement à l'étude de trois terrains situés dans des parties différentes du globe (le nord canadien, l'Amazonie brésilienne et les Alpes) et emblématiques de la diversité des fronts écologiques.
    Mots-clés : Alpes, Amazonie, Canada, échelles, front écologique, méthodologie, temporalités.

  • Labrue Claire« La forêt comme clôture : l'enfermement de l'habitat par la forêt », Projets de paysage. https://hal.archives-ouvertes.fr/hal-00516823.
    Mots-clés : clairière urbaine, clôture, Confinement, culture forestière, enclosure, Enfermement, Forest, forestry culture, Forêt, habitat, urban glade.


  • Larrue Sébastien et Chiron Thomas« Les îles de Polynésie française face à l’aléa cyclonique », VertigO : la Revue Électronique en Sciences de l'Environnement, 10 (8), p. 14 p. DOI : 10.4000/vertigo.10558. https://hal.archives-ouvertes.fr/hal-01122786.
    Mots-clés : cyclone hazard, el Niño., French Polynesia, Mapping, tropical cyclone, tropical storm.


  • Larrue Sébastien, Meyer Jean Yves et Chiron Thomas« Anthropogenic Vegetation Contributions to Polynesia’s Social Heritage : The Legacy of Candlenut Tree (Aleurites moluccana) Forests and Bamboo (Schizostachyum glaucifolium) Groves on the Island of Tahiti. », Economic Botany, 64 (3), p. 329-339. DOI : 10.1007/s12231-010-9130-3. https://hal.archives-ouvertes.fr/hal-01122832.
    Résumé : In the tropical oceanic islands of the Pacific, vegetation patterns and dynamics are the result of plant dispersal capacities, the physical characteristics of the islands’ ecosystems, and natural disturbances. However, humans have profoundly modified native landscapes through habitat destruction and the introduction of animal and plant species. The candlenut tree Aleurites moluccana (Euphorbiaceae) and the Polynesian bamboo Schizostachyum glaucifolium (Poaceae), intentionally introduced as useful plants by the first Polynesian migrants at least 1,000 years ago, are now widely naturalized in the high volcanic islands of the Society archipelago (French Polynesia), but with an intriguing patchy distribution. The present study consists of a comparative analysis between the most recent, existing vegetation map and the known archeological sites on the island of Tahiti. Thirty-nine bamboo groves and 30 candlenut forests were identified and located using GIS and a Digital Elevation Model. The results show that the dispersal and distribution patterns of these two plant taxa are related to the presence and location of ancient sites of Polynesian occupation. The bamboo groves can be used as a bio-indicator of the presence of potential archeological sites. Their currently restricted distribution might reflect habitat requirements and poor dispersal capacities. The candlenut tree and the Polynesian bamboo are relicts of ancient Polynesian society that have persisted and remain integrated in the modern landscape. They can therefore be viewed as introduced species of high cultural heritage value.
    Mots-clés : Aleurites moluccana, archeological vestiges, Biogeography, ethnobotanical knowledge., introduced plants, Schizostachyum glaucifolium, seed dispersal, Tahiti.

  • Linton Jamie« (Book review) Of Rock and Rivers: Seeking a Sense of Place in the American West, by Ellen Wohl », H-Net Reviews, October, 2010. http://www.h-net.org/reviews/showrev.php?id=25610.
  • LInton, Jamie« George Lilley’s Photographs and the Public Life of Water », Historic Kingston, 58, p. 49-55.

  • Moreau Myrtille« Visual perception of changes in a high mountain landscape: the case of the retreat of the Évettes Glacier (Haute-Maurienne, northern French Alps) », Géomorphologie : Relief. Processus. Environnement, 2, p. 165-174. https://halshs.archives-ouvertes.fr/halshs-00529982.
    Mots-clés : geomorphosite, glacial retreat, landscape patrimony, marge proglaciaire, patrimoine paysager, perception, proglacial area, retrait glaciaire, valorisation.

  • Paradis-Grenouillet Sandrine, Leleu Jean Philippe, Allée Philippe, Belingard Christelle et Rouaud Romain« AnthracoLoJ un outil pour la simplification des mesures dendrométriques », Collection Edytem, 11, p. 197-202. https://hal.archives-ouvertes.fr/hal-00929710.

  • Paris Raphael, Cachao Mario, Fournier Jérôme et Voldoire Olivier« Nannoliths abundance and distribution in tsunami deposits: example from the December 26, 2004 tsunami Lhok Nga (northwest Sumatra, Indonesia). », Géomorphologie : Relief. Processus. Environnement, p. 109-118. https://hal.archives-ouvertes.fr/hal-00503133.

  • Paris Raphael, Fournier J., Poizot Emmanuel, Etienne Samuel, Morin Julie, Lavigne Franck et Wassmer Patrick« Boulder and fine sediment transport and deposition by the 2004 tsunami in Lhok Nga (western Banda Aceh, Sumatra, Indonesia): a coupled offshore - onshore model. », Marine Geology, 268, p. 43-54. https://hal.archives-ouvertes.fr/hal-00468179.

  • Ploquin Alain, Allée Philippe, Bailly-Maître Marie-Christine, Baron Sandrine, de Beaulieu Jacques-Louis, Carignan J., Laurent Sarah, Lavoie M., Mahé-Le-Carlier Cécile et Paradis Sandrine« PCR - Le Plomb argentifère ancien du Mont Lozère (Lozère). A la recherche des mines, des minerais et des ateliers, des paysages et des hommes », ArchéoSciences, 34, p. 99-114. https://hal.archives-ouvertes.fr/hal-00958361.

  • Renaud Miniconi et Guyot Sylvain« Conflicts and cooperation in the mountainous Mapuche territory (Argentina) », Revue de Géographie Alpine. https://hal.archives-ouvertes.fr/hal-00764105.

  • Richard Frédéric« La gentrification des " espaces naturels " en Angleterre : après le front écologique, l'occupation ? », L'Espace politique, 9 (2009-3). https://hal.archives-ouvertes.fr/hal-00454728.
    Mots-clés : campagnes, countryside, ecofront, environmental ressource, front écologique, gentrification rurale, Landscape, national parc, parc national, paysages, recomposition socio-territoriale, ressource environnementale, rural gentrification, socio-spatial changes, tourism, tourisme.


  • Richard Frédéric« La gentrification des « espaces naturels » en Angleterre : après le front écologique, l’occupation ? », L'Espace Politique. Revue en ligne de géographie politique et de géopolitique, 9. DOI : 10.4000/espacepolitique.1478. http://espacepolitique.revues.org/1478.
    Résumé : Le Royaume-Uni en général, mais plus encore l’Angleterre, s’illustrent par une forte densité de peuplement et un niveau de concentration urbaine extraordinairement élevé. Dans ce contexte singulier, les espaces les moins artificialisés, qu’ils soient ruraux ou « naturels », représentent une valeur toute particulière, du point de vue paysager, foncier, fonctionnel, symbolique et plus généralement social. Confortés en ce sens par des mesures de protection et de préservation sévères, dont les parcs nationaux restent les plus emblématiques, les espaces naturels et ruraux britanniques constituent donc l’objet de multiples convoitises, en particulier de la part d’acteurs aspirant à profiter des avantages et plaisirs qu’ils procurent. En l’espèce, si certains y pratiquent des sports de plein air, des activités de loisir et/ou touristiques socialement sélectives d’autres décident d’y résider, contribuant la plupart du temps la gentrification de ces espaces. Reposant sur le cas du Lake District et de ses environs, cette contribution vise un double objectif. Il s’agirait ainsi de réfléchir à la relation entre les notions de gentrification rurale et de front écologique. Laquelle relation contribuerait utilement à l’analyse des manifestations et modalités de la gentrification et de l’appropriation, parfois quasi exclusive des campagnes par les middle classes.
    Mots-clés : campagnes, front écologique, gentrification rurale, parc national, paysages, recomposition socio-territoriale, ressource environnementale, tourisme.

  • Terry Peter, James et Etienne Samuel« Tempestuous times in the South Pacific islands », Science, 328, p. 428-429. https://hal.archives-ouvertes.fr/hal-00521539.
    Résumé : IN RECENT WEEKS, A NUMBER OF CENTRAL South Pacific nations and territories have suffered a battering from an onslaught of intense cyclones occurring in quick succession.
    Mots-clés : cyclone, enso, global change, natural hazards, pacific.


  • Terry Peter, James et Etienne Samuel« Stones from the dangerous winds: reef platform mega-clasts in the tropical Pacific Island », Natural Hazards, p. 3. DOI : 10.1007/s11069-010-9697-0. https://hal.archives-ouvertes.fr/hal-00565087.
    Mots-clés : boulders, coral reef, cyclone, extreme events, pacific.

  • Terry Peter, James et Etienne Samuel« Recent heightened tropical cyclone activity east of 180° in the South Pacific », Weather, 65 (7), p. 193-195. https://hal.archives-ouvertes.fr/hal-00521542.
    Résumé : Owing to their small land masses and widely dispersed nature within a vast expanse of ocean, whether or not individual South Pacific islands sustain significant damage by the passage of tropical cyclones would seem to be governed largely by chance. Indeed, many cyclones do not make landfall as they pass between scattered island groups on their poleward migration from lower latitudes where they develop. Yet, through February and March this year several archipelagic nations in the central South Pacific have been less fortunate and have been severely affected by a succession of intense tropical cyclones.
    Mots-clés : cyclone, enso, global change, natural hazards, pacific.

  • Torsvik Tomas, Paris Raphael, Didenkulova Irina, Pelinovsky Efim, Belousov Alexander et Belousova Marina« Numerical simulation of explosive tsunami wave generation and propagation in Karymskoye Lake, Russia », Natural Hazards and Earth System Sciences, 10 (11), p. 105-119. https://hal.archives-ouvertes.fr/hal-00539786.

  • Wassmer Patrick, Schneider Jean-Luc, Fonfrège A.M., Lavigne Franck, Paris Raphael et Gomez Christopher« Use of anisotropy of magnetic susceptibility (AMS) in the study of tsunami deposits: application to the 2004 deposits on the eastern coast of Banda Aceh, North Sumatra, Indonesia. », Marine Geology, 275, p. 255-272. https://hal.archives-ouvertes.fr/hal-00520580.

C-ACT - Communications avec publication dans des actes

2016

  • Chevallier Marius, Delay Etienne et Linton James« L’entraide un facteur d’irrigation », in Les Reclusiennes, Sainte Foy la Grande, France : communication orale. https://halshs.archives-ouvertes.fr/halshs-01350043.
    Résumé : A la fin du XIXe Sicèle, Elisée Reclus, Pierre Kroprotkine, Léon Metchnikoff, tous les trois géographes et anarchistes s'inscrivent en faux du discours marxiste. Ils proposent une lecture englobante et complexe des sociétés (Pelletier 2013). En 1902 Pierre Kroprotkine publie en Angleterre Mutual Aid: A Factor of Evolution. Dans ce travail, on trouve une opposition au Darwinisme social et à la vision malthusienne selon laquelle une population donnée croit jusqu’à atteindre une pénurie de moyens qui force les individus à entrer en compétition (Angaut 2009). Kroprotkine répond en déplaçant cette compétition intraspécifique vers une compétition interspécifique et en montrant que dans une espère il y a coopération plutôt que compétition. Dans les Pyrénées orientales, l’eau a toujours été une ressource précieuse (De Pasa, 1821). La construction des canaux (canal de Perpignan, canal de Thuir) et les concessions d’eau accordée aux irriguants au XIVe Siècle confortent et dynamisent l’agriculture. La disponibilité et les pénuries d’eau ont très tôt incité les Hommes de ces territoires à se grouper pour pouvoir gérer une ressource essentielle pour l’économie agricole du département. En nous inspirant de Kroprotkine, nous proposerons une relecture des facteurs qui poussent les Hommes à gérer collectivement l’eau. Nous analyserons les modes de fonctionnement (règles de fonctionnement, organisations des réunions, dimensions sociales et fonctionnelles, etc). Cette relecture s'appuie sur des données de terrain ainsi que sur un modèle à base d’agent (technique informatique de simulation des dynamiques collectives). Cette relecture permettra de considérer la pénurie d’eau en temps que facteur de lien social. Nous proposons donc une intervention dans le thème “L’eau comme source de sociabilité, qui « fait société »”.
    Mots-clés : agriculture, coopération, eau, irrigation.

  • Delay Etienne, Caffarra Amelia et Quénol Hervé« CELL, an agent based model for exploring spatial heterogenity influence of climat change on Lobesia botrana development. », in Climwine Sustainable grape and wine production in the context of climate change, Bordeaux, France : communication orale. https://hal.archives-ouvertes.fr/hal-01340872.
    Mots-clés : climate change, viticulture.

  • Delay Etienne, Piou Cyril et Quénol Hervé« Cooperative winery can be a major actor for adapt viticulture locally? », in Climwine Sustainable grape and wine production in the context of climate change, Bordeaux, France : communication orale. https://hal.archives-ouvertes.fr/hal-01340874.
    Mots-clés : climate change, viticulture.

  • Delay Etienne, Piou Cyril et Quénol Hervé« Cooperative winnery can be a major actor for addapte viticulture localy? », in ClimWine, Bordeaux, France : communication orale. https://halshs.archives-ouvertes.fr/halshs-01350034.
    Résumé : Wine-growing areas are agro-systems examples where the production is highly dependent on environmental constraints. Climate change is a major stress added to those that already weigh on viticulture (White et al. 2006). If climate change is not disputed, it is the vine-grower capacity to take advantage of their environment and agricultural practices that now need to be explored. A corpus of scientific studies emerged in the literature to tackle these issues with methodologies as diverse as genetics and vine phenology (Duchêne et al. 2012), social aspects (Viguié, Lecocq, et Touzard 2014), or spatial-explicit climatology (Quénol et al. 2014). Mountainous territories are particularly good examples of complex systems that present local adaptation possibilities. The mountain environment is often perceived by vine-growers, as a natural handicap which must be lived with. The Banyuls-Collioure AOC (Appellation d’Origine Contrôlée or ’controlled designation of origin’) in the Pyrénées-Orientales area of France, can be seen as one of those places where human has been able to form emblematic landscapes. The fact that the system is set in a cooperative context also brings its share of stimulation and constraints for the territory (Draperi et Touzard 2003). This area is representative of the southern part of France where most of the wine production is made by small-scale vine-growers who are mainly organized in cooperatives. Meanwhile, questions of adaptation to climate change are becoming increasingly pressing (Van Leeuwen et al. 2013), particularly in the south of France and Mediterranean Basin. What would be the future of these areas if tomorrow the mountain environment was no longer perceived as a constraint, but rather as a land of refuge to face climate change? We will explore this question via a spatially-explicit agent-based model, by focusing on the self-organization strategies implemented by agents to meet the cooperative’s quality requirements. We have created a simulation environment, built from geographic information system data, field surveys and economic values related to the Banyuls-Collioure AOC area. This work has two aims considering climate change:  1) to attempt to provide global insight into how a mountainous vine-growing area can react and adapt to new challenges, and 2) to investigate cooperative policies and their implication on the vineyard landscape stability that can be a source of local development.
    Mots-clés : Agent based modeling, cooperation, Landscape, vineyard.

  • Linton James et Delay Etienne« Death by certainty: the Vinca dam and the withering of canal associations in the Têt basin of the Eastern French Pyrenees », in 14th European Association of Social Anthropologists biennial Conference (EASA2016): ”Anthropological legacies and human futures”, Milan, Italy : communication orale. https://halshs.archives-ouvertes.fr/halshs-01350031.
    Résumé : This paper considers the ongoing social effects of a large dam in the Eastern Pyrenees region of France. In 1976, the French state constructed a dam near the town of Vinça on the Têt River, altering the hydrological conditions that had co-produced a complex system of hydro-social relations evolved since the Middle Ages. Wittfogel's dialectical insights into the relations between the control of water and the control of people help explain the effects of the dam, which we argue was built partly as a means of gaining territorial presence in a region historically resistant to the control of the French state. However, a more complex set of dialectical relations is at play in this situation, requiring a subtler explanatory tool. We show that the dam has had the effect of transferring expertise and social power from local to central authority, but not in a direct way. Rather, the production of hydrological certainty in the form of assured and regular flows has weakened the local social structures and relations that had evolved to accommodate - and were sustained by - hydrological uncertainty and periodical scarcity. We employ the concept of the hydrosocial cycle - which borrows from Wittfogel's dialectic, but demands a more complex account of hydrosocial relations - to explain these developments. We conclude by hypothesizing some of the longer-term consequences of the dam in terms of its unintended impacts on the agricultural sector of the region and, ultimately, on the influence of the state.
    Mots-clés : Dam impacts, Political ecology of water, Uncertainty, Water management planning.

  • Perrin Jacques-Aristide« Pour un " engagement " dans la recherche : sortir du subtil jeu de la dissimulation de sa démarche dormante au nom d’un dévoilement heuristique », in Des sciences sociales engagées ?, Limoges, France : communication orale. https://hal.archives-ouvertes.fr/hal-01271906.
    Résumé : Cette communication s'inspire de l'enseignement que j'ai tiré de mes lectures de texte dans le domaine des STS et correspond à une expérience 1 d'auto-analyse de mon travail rendue possible par une série de questions pertinentes qu'il s'agit de se poser à la fois à soi-même et à son travail. Je souhaite faire la démonstration que réaliser une thèse a priori « désintéressée » est très difficile. En effet quand bien même le doctorant ne disposerait pas d'engagement public officieux ou officiel (pour une cause particulière en relation directe ou indirecte avec son objet d'étude), il réside toujours chez lui une forme d'engagement plus ou moins visible, apparente ou dormante, tantôt révélée, tantôt dissimulée, qu'il est bon de questionner. En effet par cette démarche réflexive, il est ainsi possible d'apprendre de l'épistémologie de sa science, de ses postures de recherche, de sa méthodologie, du poids de ses influences intellectuelles, du rôle de son environnement de recherche et de bien d'autres choses. De cet apprentissage aiguillonné par l'éthique peut naître une forme de connaissance utile à la science en termes heuristique autant pour soi-même que pour la communauté scientifique.
    Mots-clés : engagement, science.

  • PISTRE Pierre, Nelson Peter, Smith Darren, Kinton Chloe, Dellier Julien et Richard Frédéric« A cross-national classification of rural areas, for a cross national exploration of rural gentrification (France, UK, US) », in La renaissance rurale d’un siècle à l’autre ? , Toulouse, France : communication orale. https://halshs.archives-ouvertes.fr/halshs-01331473.
    Résumé : Classifying and mapping rural areas is not straightforward within discrete national contexts given representations of rurality are locally and regionally diverse and contested. Moreover, the problematics of comparing rural areas and rural change across national contexts is compounded by representations of rurality being nationally-specific, and profound differences between urban/rural systems and hierarchies, as well as unique physical spatialities of nations. A last but not least, cross national approach of the rural gentrification also supposed to deal with different institutional and normative frameworks of rurality and “the rural”. It mainly refers : - for UK, to the threshold of 10.000 people making differences between urban and rural areas, - for US, to the 'administrative' distinction between metropolitan and non metropolitan counties, - for France, to the increasing use of the Aires Urbaines Insee classification that excludes reference to rural areas or at least that considers sparsely areas according to the unique way of significant or non significant urban influence. Yet, there is challenge and merit in seeking to construct cross-national mappings of rural areas to enable investigations of the similarities and differences between processes of rural change and rural social reproduction across national contexts. By borrowing conceptual and methodological approaches from the three scientific contexts, this paper presents such a manoeuvre to map rural and peri-urban (what we prefer to term ‘semi-rural’) areas in a standard way, and using common methods, in a cross-national context. We then use and manipulate census and commuting data to provide comparative classifications of rurality. First, in line with official UK definitions of rurality, we define rural areas where the population is less than 10,000 people (i.e. we exclude urban areas as populations of 10,000 or more). We therefore use the RUC classification in the UK to partly apply it : - to communes in France, with an extensive use of the morphological Insee classification in Urban Units (UU), - to census tracts in the US, firstly, decoupling rural areas from within metropolitan counties to create ‘metropolitan rural areas’, and identify ‘non-metropolitan rural areas’ from non-metropolitan counties, secondly, evaluating the urban concentration of more of less than 10.000 people. We then use commuting data to distinguish between rural areas according both 1. to various intensities of commuting (30 to 60 %, and where active population represents a significant proportion of the overall population) and 2. to the size of the nearest urban centre. We demonstrate the utility of these similar rural designations by mapping simple indicators of rural gentrification across the three national contexts. The analysis highlights how rural gentrification varies considerably within national contexts yet is remarkably similar across national contexts. Places showing the strongest evidence of gentrification cluster either in areas functionally linked to urban cores through higher levels of commuting or in more remote rural regions characterized by natural amenities and recreational resources. Actually, the analysis also shows that the quantitative approach may be unequally helpful and pertinent to identify intensity and spaces of rural gentrification.
    Mots-clés : Mapping, rural classification, rural gentrification, statistical indicators.

  • Rassat Graziella, Crouzevialle Rémi, Cerbelaud Fabien et TOUMAZET Jean-Pierre« Les forêts charentaises : un objet d'étude, un contexte de recherche. Le LiDAR topographique aéroporté : un outil indispensable, une méthodologie renouvelée. », in Journées de travail internationales TRAIL 2016, Domaine national de Chambord (Loir-et-Cher), France : communication orale. https://hal.archives-ouvertes.fr/hal-01324410.
    Mots-clés : archéologie du paysage, Forêt, LiDAR Airborne, Paléométallurgie.

  • Tommasi Greta, Richard Frédéric et Cognard Françoise« Les choses sans les mots ? Circulation du concept de gentrification rurale en France », in La renaissance rurale d’un siècle à l’autre ? , Toulouse, France : communication orale. https://halshs.archives-ouvertes.fr/halshs-01331483.
    Résumé : Le constat d’une « renaissance rurale » a contribué à un renouvellement des approches vis-à-vis de l’espace rural et des catégories socio-spatiales mobilisées pour décrire les mutations des campagnes françaises. Dans les années 1990 et 2000, les chercheurs ont porté leur attention sur les nouveaux habitants et les recompositions sociales, sur les migrations d’agrément et les nouveaux modes d’habiter. Cette réflexion a été nourrie par des comparaisons internationales qui ont souligné la diffusion de ces phénomènes dans la plupart des pays occidentaux. En revanche, d’autres aspects du renouveau des campagnes semblent avoir été moins abordés, comme l’émergence d’inégalités, les processus de ségrégation ou de gentrification rurale. C’est sur ce dernier phénomène que nous nous interrogeons ici. En effet, l’approche en termes de gentrification rurale n’est que marginale en France (Raymond 2003 ; 2005 ; Perrenoud 2008 ; 2012 ; Pistre 2012 ; Richard et al. 2014), contrairement à d’autres pays, notamment le Royaume Uni (Phillips 1993 ; Smith 1998 ; Stockdale 2010) et les Etats-Unis (Ghose 2004 ; Hines, 2007 ; Nelson et Nelson 2010). Depuis les années 1990, voir 1980, les mutations des campagnes y sont appréhendées par le prisme de la gentrification, entendue dans une acception relativement large, telle qu’elle peut être également défendue en contexte urbain (Clark, 2005). Notre questionnement porte sur la discrétion du terme de gentrification rurale dans la sphère académique française. Cette discrétion résulte-t-elle d’une absence du processus en France, d’une inadaptation du concept aux mutations sociales des campagnes françaises ou encore d’autres considérations de nature plus épistémologiques que nous envisageons par le biais de la sociologie de la traduction et l’idée de circulation ? Dans le cadre de l’ANR i-RGENT, nous avons réalisé une analyse bibliographique des travaux qui décrivent des processus de gentrification rurale en France, et ce, qu’ils mobilisent ou non le terme de manière explicite. Des entretiens ont ensuite été conduits avec un certain nombre des chercheurs, auteurs de ces travaux. Cela nous a permis d’identifier les modalités de circulation du concept parmi géographes et sociologues français et d’entrevoir pourquoi d’autres termes (tri social, clubbisation, ségrégation..) lui sont souvent préférés. Notre analyse nous a conduits à trois principaux résultats : d’abord, la gentrification, concept arrivé tardivement en France, est encore considérée comme un processus propre à l’urbain et inadapté pour décrire les évolutions socio-spatiales des espaces ruraux. Pourtant, la gentrification rurale peut avoir des traits qui lui sont propres : par exemple, à la notion d’éviction est privilégiée à celle de remplacement progressif des populations locales, voire d’appropriation symbolique des campagnes, investies de valeurs et représentations propres aux nouveaux groupes sociaux. Ensuite, la recherche et l’action publique semblent avoir privilégié d’autres aspects du renouveau rural, peut-être plus attrayants et moins polémiques, car soulignant plutôt les aspects positifs liés à l’arrivée de nouvelles populations. Enfin, il s’agit aussi de questionner l’influence normative des catégories spatiales (de l’urbain, du périurbain et du rural) qui s’imposent à la communauté scientifique. En effet, la confrontation avec les terrains britanniques ou étatsuniens investigués par le prisme de la gentrification rurale montre qu’il s’agit de territoires qui, en France, seraient considérés comme périurbains. Au total, moyennant ces précisions, de nombreux travaux déjà conduits en France, confirmeraient sans forcément l’expliciter, que le processus de gentrification rurale est bien à l’œuvre dans diverses campagnes françaises.
    Mots-clés : circulation, concept, gentrication rurale, sociologie de la traduction.

  • TOUMAZET Jean-Pierre, Vautier Franck, Roussel Erwan, Rassat Graziella et Dousteyssier Bertrand« Automatic detection of archaeological structures in LiDAR data : a first approach », in Training and Research on the Archaeological Interpretation of LiDAR 2016, Chambord, France : communication orale. https://hal.archives-ouvertes.fr/hal-01320249.
    Mots-clés : archaeology, automatic detection, LiDAR, Local relief model.
2015

  • Beauger Aude, Peiry Jean-Luc, Garreau Alexandre et Voldoire Olivier« Benthic diatom and macroinvertebrate communities from the impacted bypass channel of Poutès, upper Allier River (France): preliminary results before the dam removal. », in I.S. Rivers 2015, Lyon, France. https://hal.archives-ouvertes.fr/hal-01170126.
    Résumé : For the first time in France a dam is being removed in order to restore ecological and sediment continuity and to allow salmon migration. This modification of the dam of Poutès configuration allows the establishment of a long-term study. The first step is the evaluation of the geomorphological, sedimentary and ecological characteristics before the works in a reach of 21km including the bypassed section. This analysis is based on the study of diatoms and benthic macroinvertebrates collected upstream of the dam, in the bypassed section, and downstream of the penstock pipe release. The results show the impact of the dam on communities arising from a change in the water quality, but also habitats including the presence of very long and deep pools in the bypassed section, which alternate with rapids, which change the river dynamics of watercourse.
    Mots-clés : Benthic macroinvertebrates, bypass channel, Dam impacts, diatoms, longitudinal reach.
  • Bellavia Valentina, Doyen E., Frouin M. et Wiethold J.« Premières évidences archéobotaniques de la présence du pin (Pinus sylvestris L.) dans la Marne et l'Aube (Champagne-Ardenne) entre le Mésolithique et le deuxième âge du Fer (La Tène B-C2) » (présenté à XXe Colloque du GMPCA), in Poster, 27-30 avril 2015, Besançon, France.

  • Daura Joan, Sanz M, Ramos J, Julia Ramon, Riera Mora Santiago, Miras Yannick, Allué Ethel, Picornell Llorenç, Domenech R, Fornos J.J. et Lopez Reyes« Palaeoenvironmental reconstruction of the Llobregat River between VI to IV millenia cal BP from the Cal Maurici sediment archives (Barcelona, North-East Iberian Peninsula) » (présenté à Progress in Quaternary archive studies in the Iberian Peninsula), in Poster, march 12-13, Sevilla, Spain : Poster. https://hal.archives-ouvertes.fr/hal-01134548.

  • Delay Etienne et Caffarra Amelia« A virtual pest to test a real method of integrated pest management: agent-based models as a tool to explore the behavior of L. botrana during mating disruption. », in 19e journées internationales du GiESCO, Gruissan, France. (19e journées internationales du GiESCO). https://halshs.archives-ouvertes.fr/halshs-01349990.
    Mots-clés : Agent Based Model, Lobesia botrana, Lutte intégrée, systèmes multi-agents.

  • Delay Etienne et Vinatier Fabrice« La mobilisation des services écosystémiques comme cadre conceptuel pour une approche intégrée des paysages viticoles méditerranéens », in Les rencontres du végétal, Angers, France : communication orale. https://halshs.archives-ouvertes.fr/halshs-01349940.
    Résumé : Les services écosystémiques fournissent un cadre conceptuel et un vocabulaire commun particulièrement intéressant pour construire des réflexions multi-scalaires et multi-temporelles. Ils permettent également de mobiliser un vocabulaire complexe commun (allant de l'économie à l'écologie) entre les différents acteurs leur permettant grâce à un « alignement sémantique » de développer un langage opérationnel. Nous travaillons sur des territoires à dominance viticole, marqués par une forte anthropisation et situés dans de petits bassins versants en contexte méditerranéen (le bassin versant du Bourdic dans l'Hérault, et de la Baillaury sur la commune de Banyuls-sur-mer dans les Pyrénées-Orientales). Si les enjeux sont différents, leur situation orographique, sociale et culturelle nous permet de construire une réflexion basée sur des modèles informatiques distribués à échelle imbriquée . Cette approche a pour objectif de représenter au mieux les relations topologiques entre les différentes unités spatiales du paysage reliées de manières fonctionnelles aux fonctions écosystémiques, ces dernières étant reliées à quatre types de services écosystémiques définis dans le « Millennium Ecosystem Assessment »(2003) : support, approvisionnement, régulation, culturel. Pour cela nous simulons à l’heure actuelle trois fonctions écosystémiques, dirigées par les pratiques agricoles, selon les formalismes suivants : Les pratiques agricoles et leur mutation par un système multi-agents (services culturel) L’érosion par un modèle en grille et les flux d’eau par modèle hydrologique distribué (services de support), La flore et la faune par des modèles individu-centrés (services de régulation). L’objectif affiché du modèle est de tester différentes pratiques agricoles pour évaluer qualitativement les interrelations complexes existants entre certaines fonctions écosystémiques. La compréhension des phénomènes spatiaux mis en jeux vise, en amont de toute intervention parfois coûteuse sur le terrain, de réaliser certaines médiations entre les acteurs pour aider à la réflexion et à la mise en place d’une démarche participative dans l'acceptation ou la réfutation de scénario et de mesures de gestion.
    Mots-clés : participation, Services écosystémiques, systèmes multi-agents.

  • Peiry Jean-Luc, Voldoire Olivier et Sakho M« Ressources et qualité de l'eau sur le territoire de recherche de l'OHMi Tessékéré, Nord du Sénégal », in 3ème séminaire annuel du Labex DRIIHM, Aix en Provence, France : communication orale. (Labex DRIIHM). https://hal.archives-ouvertes.fr/hal-01245116.
    Résumé : Cette présentation fait le point des recherches en cours sur la ressource en eau et sa qualité physicochimique et microbienne sur le territoire de la Grande Muraille Verte sénégalaise. Sont examinées successivement les ressources en eau permanentes (forages profonds dans la nappe maastrichtienne) et les ressources intermittentes présentes dans les mares d'hivernage.
    Mots-clés : Grande Muraille Verte, ressource en eau, Sahel, Sénégal.

  • Perrin Jacques-Aristide« Continuité, hybridation, métamorphose : quelques considérations concernant l’instigation du changement social par l’écologie politique », in Penser l'écologie politique 2 : Économie, changement social et dynamique des écosystèmes, Paris, France, p. http://events.it-sudparis.eu/ecologiepolitique/Textes%202015/Perrin%20Changement%20social%20Eau.pdf. https://hal.archives-ouvertes.fr/hal-01271922.
    Résumé : Communication dans le cadre du colloque « Penser l'écologie politique 2 : Économie, changement social et dynamique des écosystèmes, les 15-16 juin 2015 à l'Université Paris 7 Diderot) S'interroger à la fois sur une éventuelle continuité de courants politiques et l'utilité d'hybrider des théories en vue de penser l'avènement d'un changement social présuppose de réaliser d'une part un balayage de l'Histoire des idées politiques/philosophiques et d'autre part une identification éclairée des éléments susceptibles d'enrichir l'écologie politique. L'expérience est une gageure dont il semble sage de questionner la signification et le dessein. Le propos vise à mettre en perspective le sens et la cohérence de ces démarches pour construire un projet de société propre à cet objet nébuleux qu'est l'écologie politique. Nous tâcherons de soutenir deux conjectures dans la suite de l'argumentation :-l'existence d'une pluralité d'écologies politiques -la prévalence de l'idée de métamorphose au détriment d'autres notions telles que l'hybridation ou la continuité pour harmoniser un projet de société.
    Mots-clés : continuité, écologie politique, idées politiques, métamorphose.

  • Poiraud Alexandre, Chevalier Mylène, Claeyssen Bertrand et Joly Bertrand« A geoheritage inventory for geoconservation and geotourism in the Regional Natural Park of Vercors (French Alps): INPG adjustment », in International Congress ”Geoheritage Inventories: Challenges, Achievements and Perspectives”, Toulouse, Toulouse, France. https://hal.archives-ouvertes.fr/hal-01255749.
    Résumé : The present study deals with the geoheritage inventory of the PNR of Vercors and its contribution to strategic territorial analysis and geotouristic development. Based on the national inventory methodology, the Vercors inventory were adapted and analyzed by a statistical way. The multivariate analysis provided fundamental elements on the inventory structure which are the base of a classification of the 79 geosites into 9 management groups. Those groups constitute the basement of the whole educational-touristic geoheritage project of the Vercor's PNR.
    Mots-clés : Geoheritage, geomorphology, Inventory.

  • Richard Frédéric, Dellier Julien et PISTRE Pierre« Working on rural gentrification in France with a quantitative approach: brakes and opportunities », in ESRS (European Society for Rural Sociology) congress, Aberdeeen, United Kingdom : communication orale. https://hal.archives-ouvertes.fr/hal-01340818.
    Résumé : Despite the emerging of the rural gentrification as a concept in the French rural studies, research and publications related to it are still very few (Raymond 2003, Perrenoud 2008, 2012, Richard et al. 2011, 2014). Logically, quantitative approaches of rural gentrification dynamics are even more infrequent (Pistre, 2012). This could lead to a kind of paradox. The French academic cultural context still valorises empirical (and statistical) evidence to legitimate new theories or concepts. But without legitimating the use of rural gentrification as a concept, geographers and sociologists may be hesitant or reluctant to engage with empirical research. This could unfortunately perpetuate the lack of statistical exploration about rural gentrification and stop the recognition of the rural gentrification as a relevant and helpful concept to understand the French countryside change. The aim of this paper is to contribute to this necessary collective effort of nourishing quantitative approach in France, in order to encourage empirical, theoretical, qualitative and quantitative rural gentrification studies in France and then to be able to launch cross national comparative studies. The paper will be organise in two steps. Firstly, we shall basically discuss methodological issues to draw both the limits and the potential of the national statistical database to address gentrification trends and forms : these issues concern the geography (limits) of the rural, scales of statistical treatments and reliability of census data in low density areas. Secondly, by relying on various census and other national data, we will submit few results from our statistical and mapping analyses for the whole of France and also for a few local fields.
    Mots-clés : France, quantitative approach, rural gentrification, spatial categories.

  • Sabart Marion, Legrand B., Miras Yannick, Lavrieux Marlène et Latour Delphine« Recurrence of cyanobacterial blooms since 6 thousand years in the French Lake Aydat. Aquatic Sciences: global and regional perspectives » (présenté à Aquatic Sciences: global and regional perspectives. North Meets South), in Communication orale, February 22-27 2015, Granada, Spain : Association for Sciences of Limnology and Oceanography. https://hal.archives-ouvertes.fr/hal-01112284.
  • Vaz F., Bellavia Valentina, Tereso J. et Sastre J.« Iron Age firepits vs debris pits in Sabor Valley, NE Portugal » (présenté à XXe Colloque du GMPCA), in Poster, 27-30 avril 2015, Besançon, France.
2014

  • Benatti Alessandra, Mercuri Anna Maria, Allée Philippe, Bosi Giovanna, Bal Marie-Claude et Labate Donato« The charcoal sequence of a Roman site located in the town of Modena (Northern Italy) » (présenté à 9th EPPC European Palaeobotany and Palynology Conference), in Poster, August 26-31, Padova, Italy : poster. https://hal-unilim.archives-ouvertes.fr/hal-01130546.
    Mots-clés : Archaeoanthracology, Modena, woody vegetation.

  • Chassiot Léo, Chapron Emmanuel, Beauger Aude, Miras Yannick, Albéric Patrick, Ledoux G., Lajeunesse P., Schwab M.J., Develle Anne-Lise, Arnaud Fabien, Lehours Anne-Catherine, Di-Giovanni Christian et Jezequel D.« Impact of Environmental changes of lacustrine dynamics in the Lake Pavin over the 7,000 years (French Massif Central) » (présenté à 5th International MAAR Conference), in Communication orale, november 17-22 2014, Queretaro, Mexico. https://hal.archives-ouvertes.fr/hal-01112194.

  • Chassiot Léo, Chapron Emmanuel, Beauger Aude, Miras Yannick, Albéric Patrick, Ledoux Grégoire, Lajeunesse Patrick, Schwab M., Develle Anne-Lise, Arnaud Fabien, Lehours Anne-Catherine et Jézéquel Didier« Lake Pavin paleolimnology and sedimentary records of regional Natural Hazards over the last 7000 years (French Massif Central) » (présenté à International Congress of Sedimentology), in Communication orale, august 18-22 2014, Genève , Switzerland. https://hal.archives-ouvertes.fr/hal-01109426.

  • Chassiot Léo, Chapron Emmanuel, Miras Yannick, Simonneau Anaëlle, Di-Giovanni Christian, Tachikawa Kazuyo, Lajeunesse P. et BARD Edouard« Approche quantitative de l'érosion des versants dans le Massif Central : étude comparée de la sédimentation des lacs de Guéry (1 244 m a.s.l.) et de Montcineyre (1 182 m a.s.l.) » (présenté à 24e Réunion des Sciences de la Terre), in Communication orale, 27-31 octobre 2014, Pau, France. https://hal.archives-ouvertes.fr/hal-01112200.
  • Chevalier Émilie« La gouvernance des migrations climatiques : une clé de lecture géopolitique de l'évolution des territorialités dans le Pacifique insulaire au XXIe siècle » (présenté à Colloque GDI-PIPSA "Les défis de la gouvernance politique, économique et juridique dans un Pacifique en mutation"), in A paraître, Tahiti, Polynésie française.

  • Defive Emmanuelle« Watershed Response to Anthropic and Climatic Change in the Ligerian high basin during tardiglaciaire and holocene periode » (présenté à Plate-forme Recherche/Données/Information du plan Loire grandeur nature : Journées de Restitution en Région des Résultats de la Recherche (R4), in Communication orale, Clermont-Ferrand, France : Etablissement Public Loire, Plate-forme Recherche/Données/Information du plan Loire grandeur nature. https://hal.archives-ouvertes.fr/hal-01131326.
    Mots-clés : French Massif Central, Géoarchéologie, Geoarcheology, Géomorphologie, HOLOCENE.

  • Defive Emmanuelle, Poiraud Alexandre, Berger Jean-François, Virmoux Clément, SANIAL Bernard, Garcia Daniel, Voldoire Olivier, CHARRIER Gaspard, RENAULT Amélie, Guilbert Jacques, Bouvard Emma, Raynal Jean-Paul, Dendievel André-Marie, Voruz Jean-Louis, Miras Yannick, Cabanis Manon, Beauger Aude, Gunnell Yanni, Braucher Régis, Barra Adrien, GREGOIRE Fabrice, Blanc Elodie, DUMOULIN François, Guadelli Jean-Luc, Lafarge Audrey et Delvigne Vincent« Réponse des têtes de bassin aux fluctuations environnementales, du Tardiglaciaire à l’Actuel : l’exemple du bassin supérieur de la Loire dans le massif du Mézenc (Velay-Vivarais, Sud-Est du Massif central, France) » (présenté à Colloque AFEQ-CNF INQUA Q9 " Le Quaternaire : marqueurs, traçeurs et chronomètres "), in Communication orale, 26-28 mars 2014, Lyon, France : AFEQ-CNF INQUA. https://hal.archives-ouvertes.fr/hal-01131230.
    Résumé : Dans le Massif central, les têtes de bassin (ordre Strahler 3-4 et inférieur) sont un domaine encore peu investi pour l’étude des flux hydro-sédimentaires liés aux fluctuations environnementales quaternaires. Le système hydrographique naissant recèle pourtant d’intéressantes archives sédimentaires, à l’échelle au moins des temps postérieurs au dernier glaciaire. Motivé par les observations préliminaires effectuées ces dernières années dans le massif du Mézenc (Velay oriental, bassin supérieur de la Loire), le programme WRACC, financé par l’Etablissement Public Loire et le FEDER, se propose d’aborder l’étude de ces dépôts et de leur environnement sous l’angle d’une approche géoarchéologique pluridisciplinaire. La prospection est en cours, et s’appuie sur des coupes naturelles ainsi que sur l’ouverture de tranchées en travers d’un fond de vallon (Champetienne) où se sont concentrées nos investigations. Les données analytiques ne sont pas encore disponibles. Il est cependant possible, grâce aux observations stratigraphiques et aux premières datations obtenues, de poser quelques jalons. A l’échelle de l’Holocène au moins, les cours d’eau semblent avoir fluctué dans leur fond de vallon sans progrès de l’encaissement, alternant phases de stockage et de déstockage. La forme des chenaux successifs et le gabarit des matériaux les remblayant témoignent des fluctuations corrélatives du style fluvial et de la compétence. Les séquences débutent généralement par une nappe alluviale très grossière d’âge indéterminé témoignant d’un système de forte énergie. Le 4e-5e siècle après J.-C. semble marquer le terme d’une phase de stabilité avec remaniement des horizons pédologiques et de la végétation. Après cette vigoureuse phase de détritisme, la période stable allant des 8e-9e siècles au 15e siècle est enfin suivie par une crise érosive de faible énergie à l’Epoque Moderne, où la part respective des forçages naturels (PAG) et anthropiques peut être plus particulièrement discutée.
    Mots-clés : Eastern Velay, French Massif Central, Géoarchéologie, Geoarcheology, Géomorphol