Programmes > Par auteur > Loic Lebreton

Environmental and climatic changes in South Western Europe during the MIS 12. The case of the Caune de l'Arago.
Lebreton Loic  1@  
1 : Histoire naturelle de l\'Homme préhistorique  (HNHP)  -  Site web
Museum National d'Histoire Naturelle, Université de Perpignan Via Domitia, Centre National de la Recherche Scientifique : UMR7194
Institut de Paléontologie Humaine 1, rue René Panhard 75013 Paris -  France

The Caune de l'Arago is a major site for the comprehension of the Lower Paleolithic in Southwestern Europe. The medium complex is characterized by numerous anthropogenic occupations which have given a great number of remains of humans, of fauna and of artefacts, among them bifaces. The faunal associations allow to observe three climatic stages within this recording: two cold ones and a mild one. The small vertebrates, with their abundance and their diversity, are particularly useful for the observation of these stages, which historically have been correlated to glacial or interglacial stages. If the first cold phase, dated 438+/- 31ka is correlated to the Marine Isotopic Stage 12 (MIS 12), the correlation of the following phases to isotopic stages can be discussed. They may correspond to climatic variations of the MIS 12. Indeed, the latest studies about paleoclimatic reconstitution which allow to define the evolution of the paleo-temperature show that these differences are relatively small. Therefore, instead of a correlation to MIS 12, 13 and 14, the medium complex of the Caune de l'Arago could belong solely to MIS 12. The interpretation of these climatic changes depends on the variations of the faunal assemblages, themselves subjected to various factors: the position of the site, situated halfway between the Mediterranean and the Pyrenees; the geomorphology of the very diversified landscape, which creates numerous different biotopes; the possibility of a recording over the long term which would gather non-contemporary species within a single sedimentary ensemble. We propose here to present both hypotheses and to discuss the various factors which influence the distribution and the representation of the small vertebrate species present on the site.

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