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50 000 ans d'histoire de la végétation et du climat en Europe occidentale : étude pollinique et approche multi-proxy sur la séquence sédimentaire du Bergsee (Forêt Noire, Allemagne)

Abstract : Bergsee Lake provides a terrestrial and continuous sediment record of environmental changes in Western Europe for the last 50 ka.A continuous pollen record established at secular resolution allow to reconstruct the vegetation and climate variability of the Last Glacial period.Contrasted climate/vegetation is recorded between Marine Isotope Stages 3 and 2 (more steppic for the second one), and the north-Atlantic stadial/interstadial succession is also reflected by alternating steppe (i.e. cold/dry climate) and short forested episodes (i.e. warming). Moreover, Heinrich Stadials are evidenced as pronounced glacial phases by the Bergsee record.These results are supported by 1) comparison with other European records and 2) the multi-proxy approach (chironomids, alkanes, sedimentary data) applied on key climatic periods.Finally, comparison with archaeological data highlights the great potential contribution of the Bergsee record to the understanding of society changes of the Late Palaeolithic.
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Submitted on : Wednesday, October 30, 2019 - 9:45:14 AM
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  • HAL Id : tel-02338676, version 1

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Fanny Duprat-Oualid. 50 000 ans d'histoire de la végétation et du climat en Europe occidentale : étude pollinique et approche multi-proxy sur la séquence sédimentaire du Bergsee (Forêt Noire, Allemagne). Archéologie et Préhistoire. Université Bourgogne Franche-Comté, 2019. Français. ⟨NNT : 2019UBFCC001⟩. ⟨tel-02338676⟩

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