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Variabilité des incendies en Europe de l'Ouest au cours du dernier cycle climatique: relations avec le climat et les populations paléolithiques. Etude des microcharbons préservés dans les carottes marines

Abstract : Fire regime of the last climatic cycle of Western Europe has been documented by analysing microcharcoal preserved in two cores collected off southwestern Iberia and Western France. Automated image analysis using transmitted light of microcharcoal particles combined with petrographic analysis have revealed a millennial variability of the fire regime, characterised by higher regime during interstadials (warmings) than during stadials (coolings). This variability has been related to biomass and fuel load, in particular in Iberia with alternation of Mediterranean forest-heathlands (interstadials) and semi-desert vegetation (stadials). Three phases of fire regime in Western France have been observed during Heinrich events, related to biomass and environmental condition changes. The comparison between fire regime of Western Europe and Paleolithic occupations suggest that fire was not extensively used for ecosystem management by modern humans at the time of their arrival in this region.
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https://tel.archives-ouvertes.fr/tel-00512416
Contributor : Anne-Laure Daniau <>
Submitted on : Monday, August 30, 2010 - 2:06:43 PM
Last modification on : Thursday, November 19, 2020 - 10:32:03 AM
Long-term archiving on: : Thursday, December 1, 2016 - 6:31:55 PM

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  • HAL Id : tel-00512416, version 1

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Anne-Laure Daniau. Variabilité des incendies en Europe de l'Ouest au cours du dernier cycle climatique: relations avec le climat et les populations paléolithiques. Etude des microcharbons préservés dans les carottes marines. Planète et Univers [physics]. Universite Bordeaux1; Université Sciences et Technologies - Bordeaux I, 2008. Français. ⟨tel-00512416⟩

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