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Ana Ejarque

Membre associé
Equipe "Paléoenvironnements et Géoarchéologie"

Contact : ana.ejarque@uca.fr
_Tel : +33 (0)4 73 34 68 04


PUBLICATIONS

ACL - Articles dans des revues à comité de lecture

2016


  • Ejarque Ana, Julia Ramon, Reed Jane M, Francesc Mesquita-Joanes, Javier Marco-Barba et Riera Mora Santiago« Coastal Evolution in a Mediterranean Microtidal Zone: Mid to Late Holocene Natural Dynamics and Human Management of the Castellò Lagoon, NE Spain », PLoS ONE, 11, p. 155446 - 155446. DOI : 10.1371/journal.pone.0155446.s003. https://hal.archives-ouvertes.fr/hal-01396279.
    Résumé : We present a palaeoenvironmental study of the Castelló lagoon (NE Spain), an important archive for understanding long-term interactions between dynamic littoral ecosystems and human management. Combining geochemistry, mineralogy, ostracods, diatoms, pollen, non-pollen palynomorphs, charcoal and archaeo-historical datasets we reconstruct: 1) the transition of the lagoon from a marine to a marginal environment between ~3150 cal BC to the 17 th century AD; 2) fluctuations in salinity; and 3) natural and anthropogenic forces contributing to these changes. From the Late Neolithic to the Medieval period the lagoon ecosystem was driven by changing marine influence and the land was mainly exploited for grazing, with little evidence for impact on the natural woodland. Land-use exploitation adapted to natural coastal dynamics, with maximum marine flooding hampering agropas-toral activities between ~1550 and ~150 cal BC. In contrast, societies actively controlled the lagoon dynamics and become a major agent of landscape transformation after the Medieval period. The removal of littoral woodlands after the 8 th century was followed by the expansion of agrarian and industrial activities. Regional mining and smelting activities polluted the lagoon with heavy metals from the ~11 th century onwards. The expansion of the milling industry and of agricultural lands led to the channelization of the river Muga into the lagoon after ~1250 cal AD. This caused its transformation into a freshwater lake, increased nutrient load, and the infilling and drainage of a great part of the lagoon. By tracking the shift towards an anthropogenically-controlled system around ~750 yr ago, this study points out Mediterranean lagoons as ancient and heavily-modified systems, with anthropogenic impacts and controls covering multi-centennial and even millennial timescales. Finally, we contributed to the future construction of reliable seashell-based chronologies in NE Spain PLOS ONE |
    Mots-clés : Holocene, Human-environmental dynamics, Iberian Peninsula, Mediterranean coastal lagoon, Palaeoenvironment.


  • Hardiman Mark, Scott Andrew C., Pinter Nicholas, Anderson R. Scott, Ejarque Ana, Carter-champion Alice et Staff Richard A.« Fire history on the California Channel Islands spanning human arrival in the Americas », Philosophical Transactions of the Royal Society of London. B (1887–1895), 371. DOI : 10.1098/rstb.2015.0167. https://hal.archives-ouvertes.fr/hal-01513621.
    Résumé : Recent studies have suggested that the first arrival of humans in the Americas during the end of the last Ice Age is associated with marked anthropogenic influences on landscape; in particular, with the use of fire which, would have given even small populations the ability to have broad impacts on the landscape. Understanding the impact of these early people is complicated by the dramatic changes in climate occurring with the shift from glacial to interglacial conditions. Despite these difficulties, we here attempt to test the extent of anthropogenic influence using the California Channel Islands as a smaller, landscape-scale test bed. These islands are famous for the discovery of the ‘Arlington Springs Man’, which are some of the earliest human remains in the Americas. A unifying sedimentary charcoal record is presented from Arlington Canyon, Santa Rosa Island, based on over 20 detailed sedimentary sections from eight key localities. Radiocarbon dating was based on thin, fragile, long fragments of charcoal in order to avoid the ‘inbuilt’ age problem. Radiocarbon dating of 49 such fragments has allowed inferences regarding the fire and landscape history of the Canyon ca 19–11 ka BP. A significant period of charcoal deposition is identified approximately 14–12.5 ka BP and bears remarkable closeness to an estimated age range of the first human arrival on the islands.
    Mots-clés : Arlington springs man, charcoal, fire, landscape history, radiocarbon dating.


  • Scott Andrew C, Hardiman Mark, Pinter Nicholas, Anderson R. Scott, Daulton Tyrone L., Ejarque Ana, Finch Paul et Carter-champion Alice« Interpreting palaeofire evidence from fluvial sediments: a case study from Santa Rosa Island, California, with implications for the Younger Dryas Impact Hypothesis », Journal of Quaternary Science, 32 (1), p. 35-47. DOI : 10.1002/jqs.2914. https://hal.archives-ouvertes.fr/hal-01513609.
    Résumé : Fluvial sequences from the late Pleistocene to the Holocene are exposed in Arlington Canyon, Santa Rosa Island, Northern Channel Islands, California, USA, including one outcrop that features centrally in the controversial hypothesis of an extra-terrestrial impact at the onset of the Younger Dryas. The fluvial sequence in Arlington Canyon contains a significant quantity and range of organic material, much of which has been charred. The purpose of this study was to systematically describe the key outcrop of the Arlington sequence, provide new radiocarbon age control and analyse organic material in the Arlington sediments within a rigorous palaeobotanical and palaeo-charcoal context. These analyses provide a test of previous claims for catastrophic impact-induced fire in Arlington Canyon. Carbonaceous spherular materials were identified as predominantly fungal sclerotia; ‘carbon elongates’ are predominantly arthropod coprolites, including termite frass. ‘Glassy carbon’ formed from the precipitation of tars during charcoalification. None of these materials indicate high-temperature formation or combustion. Charcoal and other materials in Arlington Canyon document widespread and frequent fires both before and after the onset of the Younger Dryas, recording predominantly low-temperature surface fires. In summary, we find no evidence in Arlington Canyon for an extra-terrestrial impact or catastrophic impact-induced fire.
    Mots-clés : charcoal, extra-terrestrial impact, fluvial sedimentology, stratigraphy, Younger Dryas Impact Hypothesis.
2015


  • Anderson R. Scott, Ejarque Ana, Rice Johnathan, Smith Susan J. et Lebow Clayton G.« Historic and Holocene environmental change in the San Antonio Creek Basin, mid-coastal California », Quaternary Research, 83 (2), p. 273–286. DOI : 10.1016/j.yqres.2014.11.005. https://hal.archives-ouvertes.fr/hal-01514991.
    Résumé : Using a combination of pollen, non-pollen palynomorphs (NPPs) and charcoal particle stratigraphies from sediment cores from two sites, along with historical records, we reconstructed paleoenvironmental change in mid-coastal California. The San Antonio Creek section contains a discontinuous, Holocene-length record, while Mod Pond includes a continuous late Holocene record. Together the records allow for interpretation of most of the present interglacial. The longer record documents coastal sage scrub and chaparral dominated by woodland elements early in the Holocene to about 9000 yr ago, a potential decline in woodland communities with drying conditions during the middle Holocene to about 4800 yr ago, and an expansion of coastal sage scrub with grassland during the late Holocene. Evidence for climatic fluctuations during the last 1000 yr at Mod Pond is equivocal, suggesting that the Medieval Climate Anomaly–Little Ice Age had modest impact on the Mod Pond environment. However, evidence of significant environmental change associated with cultural transitions in the 18th–19th centuries is stark. Introduction of non-native plants, establishment of cattle and sheep grazing, missionization of the native population, changes in burning practices during the Spanish period and enhanced cropping activities during North American settlement worked together to substantially modify the mid-California coastal landscape in about a century's time.
    Mots-clés : California, Fire history, Holocene vegetation change, Human impact, Non-pollen palynomorphs, Pollen.


  • Ejarque Ana, Anderson R Scott, Simms Alexander R. et Gentry Beau J.« Prehistoric fires and the shaping of colonial transported landscapes in southern California: A paleoenvironmental study at Dune Pond, Santa Barbara County », Quaternary Science Reviews, 112, p. 181–196. DOI : 10.1016/j.quascirev.2015.01.017. https://hal.archives-ouvertes.fr/hal-01513641.
    Résumé : Using a novel combination of paleoecologic proxies including pollen, non-pollen palynomorphs (NPPs), macroscopic charcoal, and Spheroidal Carbonaceous Particles (SCPs), 5000 years of landscape change, fire history and land-use have been reconstructed from Dune Pond, Santa Barbara County, California. The pond was sensitive to Holocene regional climatic variability, showing different phases of lower (4600–3700 cal yr BP, 2100–700 cal yr BP, historical period) and higher (3700–2100 cal yr BP, 700–150 cal yr BP) local moisture availability. During this period the landscape was dominated by a coastal mosaic vegetation including dune mats, coastal scrub and salt marshes on the dunes and backdunes, with chaparral and oak woodland growing in the valley plains and foothills. Fire was intimately linked with such dominating mosaic vegetation, and the combination of wet conditions and the presence of nearby human settlement were a trigger favoring coastal fires for at least two periods: from 3100 to 1500 cal yr BP and from 650 cal yr BP until the 18th century. In both cases fire was an important tool to keep an open coastal landscape attractive to hunting wildlife. Finally, matching this varied range of high-resolution paleoecological proxies with historical records we could characterize the development of colonial transported landscapes following the Euro-American settlement of Santa Barbara. The introduction of livestock grazing by Spanish colonists favored erosive processes and the introduction of fecal-borne parasites in freshwater bodies, negatively impacted salt and brackish coastal marshes, and promoted the invasion of alien grasses and ruderals. This agro-pastoral landscape was consolidated during the American period, with a greater role for cultivation, the development of industrial activities and increased population. Despite negative environmental consequences such as the loss of native habitats, exotic land-uses and plants introduced during the historical period significantly contributed to the configuration of a cultural landscape which forms part of the cultural heritage of California.
    Mots-clés : California, Colonial transported landscapes, Fire history, Non-pollen palynomorphs, Pollen, Spheroidal Carbonaceous Particles.


  • Fullola Josep M., Albizuri Silvia, Álvarez Ramón, Bergadà M. Mercè, Cebrià Artur, Daura Joan, Domingo Inés, Ejarque Ana et Al. Et« Seminari d'Estudis i Recerques Prehistòriques (SERP). », Pyrenae. DOI : 10.1344/Pyrenae2015.SpecialNumber.1.2. https://hal.archives-ouvertes.fr/hal-01514997.
    Mots-clés : SERP, University of Barcelona.


  • 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.
2014


  • Ejarque Ana, 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.


  • Orengo Hector A., Ejarque Ana et Albiach Rosa« Water management and land-use practices from the Iron-Age to the Roman period in Eastern Iberia », Journal of Archaeological Science, 49, p. 265–275. DOI : 10.1016/j.jas.2014.05.005. https://hal.archives-ouvertes.fr/hal-01514993.
    Résumé : This study investigates water and land usage in the territory of La Carència, an Ibero-Roman city located near Turís (Valencia, Spain) in Eastern Iberia. The outstanding political importance of La Carència during the Iberian Iron-Age period is attested by its large size, the monumental character of its structures and on-site finds. Multidisciplinary and micro-regional landscape work at its territory documented significant differences between the Iberian and the Roman settlement patterns, which are attributed to the distinct agricultural production and water management systems of each period. While Iberian sites are more related to the agricultural exploitation of flat, dry land for which water sources, such as natural springs, were probably used, Roman sites seem to be associated with more productive soils that take advantage of flooding areas and the drainage of water accumulation zones. Such different agricultural preferences based on large-scale water management are documented for the first time in the Iberian Peninsula and they attest to the great potential of multidisciplinary landscape archaeology to address past land-use practices.
    Mots-clés : Ancient agriculture, Eastern Iberia, GIS, Iberian, Remote sensing, Roman, Water management.
2013


  • Anderson R Scott, Ejarque Ana, Brown Peter M et Hallett Douglas J« Holocene and historical Vegetation Change and Fire History in the Mid-Coastal Region of California », Holocene, 23 (12), p. 1797-1810. DOI : 10.1177/0959683613505344. https://hal.archives-ouvertes.fr/hal-01514994.
    Résumé : Pollen, non-pollen palynomorphs (NPPs), and charcoal particle stratigraphies are used to determine environmental change at Glenmire, Point Reyes Peninsula, northcentral coastal California, over the last c. 6200 years. Pollen was not preserved in early Holocene sediments when climate was drier than present. However, groundwater tables rose after c. 6200 cal. BP, allowing for greater subsequent preservation of organic matter. Middle and late Holocene environments were a mosaic of vegetation types, including mixed conifer forest with coastal scrub grassland prior to c. 4000 cal. BP. Subsequently, hardwoods such as alder (Alnus) and coastal scrub (e.g. Artemisia, Baccharis) expanded until c. 2200 cal. BP, followed by tanoak (Lithocarpus densiflorus), Douglas fir (Pseudotsuga menziesii), and coast redwood (Sequoia sempervirens). With increasing amounts of oak (Quercus), this mosaic of vegetation types continued to dominate until the arrival of Euro-Americans in the early to mid-1800s. The fire history is probably tied closely to human settlement, since natural ignitions are rare. Elevated charcoal amounts coincide with increased sedentism of the native populations by about 3500 cal. BP. Increased sedentism may have caused a more intense and constant use of the coastal environment around Glenmire. For the most recent centuries, we compared historical records of explorations, Spanish Mission establishment, consolidation of the native Coast Miwok population, ranching by Mexican nationals, and dairying by Americans at the height of California’s gold rush with the paleoecological record. The Glenmire record thus documents changing fire use following the ad 1793 fire suppression proclamation; declines in native forest species; introductions of non-native species, including those associated with livestock grazing and land disturbance; and an increase in coprophilous fungi (NPPs) associated with the presence of large numbers of sheep and cattle, among other changes. During the historical period, the sedimentary record of historical fires closely matches the nearby fire-scar tree-ring record.

  • 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.
2012

  • Albiach Rosa, Orengo Hèctor, Blasco Josep et Ejarque Ana« La Carència (Valencia, España) y su territorio. Resultados de la aplicación de metodologías digitales », Virtual Archaeology Review, 3 (5), p. 73-76. https://hal.archives-ouvertes.fr/hal-01515001.
    Résumé : 'La Carència. Chronological and urban change. Evaluation in its territorial context' is an archaeological project whose application of digital methodologies to the study of la Carència Ibero-Roman oppidum and its territory has been prominent during the last ten years. This application has been twofold: archaeological research has employed GIS analyses, photogrammetrical modelling of past landscapes and multispectral imagery analysis. Scientific dissemination has been enhanced by the use of aerial photogrammetry but 3D virtual modelling was also employed to develop a hypothetical reconstruction of the city walled area. In general the application of digital methodologies benefited archaeological analysis and, at the same time, helped developing the heritage value of both site and territory.
    Mots-clés : 3D, GIS, PHOTOGRAMMETRY, Remote sensing.

  • Palet Josep M, Julia Ramon, Riera Santiago, Ejarque Ana, Orengo Hèctor A, Miras Yannick, Garcia Arnau A, Allée Philippe A, Reed Jane, Marco Javier M, Marqués Maria Angels, Furdada Glòria et Montaner Jordi M« 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 for Ancient Studies, 3, p. 305 - 310. https://hal.archives-ouvertes.fr/hal-01515000.
    Résumé : The main goal of the InterAmbAr reseach project1 is to analyze the relationships between landscape systems and human land-use strategies on mountains and littoral plains from a long-term perspective. The study adopts a high resolution analysis of small-scale study areas located in the Mediterranean region of north-eastern Catalonia. The study areas are distributed along an altitudinal transect from the high mountain (above 2000m a.s.l.) to the littoral plain of Empordà (
    Mots-clés : cachment-based interactions, Landscape evolution, Late Holocene, Mediterranean environments, paleoenvironment.

  • 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 : cachment-based interactions, Landscape evolution, Late Holocene, Late Holocene., Mediterranean environments, paleoenvironment.
2009


  • Ejarque Ana et Orengo Hector A.« LEGACIES OF CHANGE: THE SHAPING OF CULTURAL LANDSCAPES IN A MARGINAL MEDITERRANEAN MOUNTAIN RANGE, THE GARRAF MASSIF, NORTH-EASTERN SPAIN », Oxford Journal of Archaeology. DOI : 10.1111/j.1468-0092.2009.00336.x. https://hal.archives-ouvertes.fr/hal-01514996.
    Résumé : Human conceptions of landscape have influenced the shaping of landscapes as much as landscape configurations have modelled human perceptions. In this article a new theoretical approach to long-term cumulative landscape change is tested on the Garraf Massif (Baix Llobregat, north-eastern Spain). Thanks to its ancient occupation, physical character and location near to the city of Barcelona, the area provides a good illustration of how human-induced landscape change has shaped new, and sometimes conflicting, landscape perceptions. These perceptions then play an equally active role in altering the previously ‘inherited landscape’ in a long-term cyclical process that can be studied through the combined use of historical, palaeoenvironmental and archaeological records.
    Mots-clés : Cultural landscapes, Garraf massif, Spain.

C-ACT - Communications avec publication dans des actes

2013

  • Orengo Hector A., Maria Palet Josep, Ejarque Ana, Miras Yannick et Riera Mora Santiago« The historical configuration of a high mountain UNESCO World Heritage Site: the agropastoral Cultural Landscape of the Madriu-Perafita-Claror Valley » (présenté à Carved mountains engraved stones. Environmental resources archaeology in the Mediterranean mountains (A.M. Stagno dir.), in Archeologia Postmedievale, october 20-22, 2011, Borzonasca, Italy, 17: p. 333-343. https://hal.archives-ouvertes.fr/hal-01111709.
    Mots-clés : landscape, Pyrenees.

  • Palet Martinez Josep Maria, Orengo Hector, Ejarque Ana, Miras Yannick, Euba I. et Riera Mora Santiago« Arqueología de paisajes altimontanos pirenaicos: formas de explotacion y usos del medio en epoca romana en la valle del Madriu-Perafita-Claror (Andorra) y en la Sierra del Cadí (Alt Urgell) » (présenté à Paysages ruraux et territoires dans les cités de l'occident romain. Gallia et Hispania), in Actes du colloque international AGER IX, march 25-27, 2010, Barcelona, Spain : Presses Universitaires de la Méditerranée, p. 329-340. https://hal.archives-ouvertes.fr/hal-00831684.

  • Riera Mora Santiago, Ejarque Ana, Miras Yannick, Julià Ramón, Palet Martinez Josep Maria et H. Orengo Hector« Human occupation, land use and environmental research in the Upper Eastern Pyrenees through the long-term approach » (présenté à Palynology : the bridge between palaeoecology and ecology for the understanding of human-induced global changes in the Mediterranean area), in Communication orale, 27-29 mai 2013, Modena, Italy : UNIMORE (university of Modena). https://hal.archives-ouvertes.fr/hal-01112237.

  • Riera Mora Santiago, Miras Yannick, Servera Gabriel, Julia Ramon, Beauger Aude, Ejarque Ana, Palet Martinez Josep Maria, H. Orengo Hector, Euba Itxaso et Garcia Arnau« Human management and microregional landscape variability of high altitude Eastern Pyrenees during historical times: the upper valleys of Ter and Tet. » (présenté à Pollen biotechnology, diversity and function in a changing environment), in Communication orale, 17-20 september 2013, Madrid, Spain : 2nd International APLE-APLF Congress. https://hal.archives-ouvertes.fr/hal-01112234.
2012

  • Julià Ramón, Maria Palet Martinez Josep, Ejarque Ana, H. Orengo Hector, Miras Yannick, Riera Mora Santiago, Reed Jane, Marco J, Allee Philippe, Marquès M.A., Furdada G., Bal Marie-Claude et Muntaner J.« Complémentarités Mer/Montagne dans un bassin versant méditerranéen (Pyrénées orientales) au cours de l’Holocène supérieur » (présenté à Colloque international Q8 ”Quaternaire n°8”: variabilité spatiale des environnements quaternaires, contraintes, échelles et temporalités), in Communication orale, February 28 - march 2, Clermont-Ferrand, France : GEOLAB (UMR 6042), Association française pour l'Etude du Quaternaire, MSH-Clermont-Ferrand. https://hal.archives-ouvertes.fr/hal-01112091.
  • Steiger Johannes, Beauger Aude, Ejarque Ana, Miras Yannick, Voldoire Olivier, Peiry Jean-Luc, Vautier Franck et Corenblit Dov« Paléodynamique fluviale et analyses paléoenvironnementales multi-proxies d'un paléochenal de l'Allier, France » (présenté à I.S Rivers, Recherches et actions au service des fleuves et grandes rivières), in Communication orale, 26-28 juin 2012, Lyon, France.
2011

  • Ejarque Ana, Miras Yannick et Riera Mora Santiago« Modern pollen and non-pollen palynomorph indicators of vegetation and highland grazing activities : results obtained from the study of surface and dung assemblages in the Eastern pyrenees » (présenté à XXIIe Symposium de l’APLF "Palynologie et diversités : marqueurs, milieux, méthodes, modèles, applicationsllevue-Paris), in Communication orale, 19-22 septembre 2011, Meudon, France : LGP-Meudon. https://hal.archives-ouvertes.fr/hal-01112276.

  • Ejarque Ana, Miras Yannick, Steiger Johannes, Beauger Aude, Voldoire Olivier, Peiry Jean-Luc, Vautier Franck et K. Serieyssol Karen« 2000 ans de paléodynamique fluviale et d’histoire du paysage dans la plaine alluviale de l’Allier révélés par l’analyse multi-proxy de 2 paléochenaux (Auvergne, France) » (présenté à Palynologie et diversités: marqueurs, milieux, méthodes, modèles, applications), in Poster, september 19-22, Meudon, France : poster. https://hal.archives-ouvertes.fr/hal-01112312.

  • Orengo Hector A., Ejarque Ana, Palet Martinez Josep Maria, Miras Yannick, Euba Itxaso, Riera Mora Santiago et Julià Ramón« Past human occupation and land use of highland areas in the eastern Pyrenees: archaeology and palaeoenvironment in the Segre valley » (présenté à XXXIIe Rencontres internationales d’archéologie et d’histoire d’Antibes: "Variabilités environnementales, mutations sociales : nature, intensité, échelles et temporalities des changements"), in Communication orale, 20-22 octobre 2011, Antibes, France. https://hal.archives-ouvertes.fr/hal-01112267.
2010
  • Palet Martinez Josep Maria, Orengo Hector A., Ejarque Ana, Euba Itxaso, Miras Yannick et Riera Mora Santiago« Formas de paisaje de montaña y ocupación del territorio en los Pirineos orientales en época romana: estudios pluridisciplinares en el valle del Madriu-Perafita-Claror (Andorra) y en la Sierra del Cadí (Cataluña) » (présenté à International Congress of Classical Archaeological meetings between cultures in the ancient Mediterranean), in Bolletino di Archeologia on line, September 22-26, 2008, Rome, Italy, volume speciale A/A8/5: p. 67-79.

CH - Chapitres d'ouvrage

2012

AP - Autres publications

2013

  • Steiger Johannes, Corenblit Dov, Carozza J.-M., Dejaifve P-A, Delmotte Sebastien, Ejarque Ana, Sans LF, Simon P, Tabacchi Eric, Valette Philippe et Yény ERapport d’activité du projet GALE&T " Garonne et Allier Eaux & Territoires " du programme national " Eaux & Territoires ", Research Report, UMR GEOLAB - Géographie physique et environnementale, 350 p. p. https://hal.archives-ouvertes.fr/hal-01112296.
    Mots-clés : Allier, Eaux & Territoires, Garonne.