L’histoire des activités agricoles et des paysages révélé par un outil en plein essor : l’ADN sédimentaire lacustre

Abstract : Here we present the results from a bourgeoning tool, the analyses of lake sediment DNA applied to the reconstruction of agriculture and landscape histories (plant and mammal DNA) in the French Alps. As the tool is pioneer, the first part of the manuscript is focused on the study of the conditions to archive the DNA in lake sediments and on the reliability of the data. Results suggest that lakes submitted to high detrital inputs are more favourable to the record of DNA coming from the catchment. Moreover, we show that DNA and pollen analyses are complementary. Combining these two approaches, we can distinguish the local from the more regional landscape evolution. The reconstruction of local landscapes and the access to the composition of livestock farming are the main advantages of the lake sediment DNA tool. With this innovative tool, we can reconstruct a detailed picture of the alpine agriculture dynamic in space and time, as well as study their effects on the environment.
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Contributor : Christine Maury Referent Hal Edytem <>
Submitted on : Tuesday, September 18, 2018 - 3:11:49 PM
Last modification on : Thursday, April 11, 2019 - 1:06:58 AM

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  • HAL Id : hal-01876542, version 1

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Charline Giguet-Covex, Jérôme Poulenard, Ludovic Gielly, Manon Bajard, Laurent Fouinat, et al.. L’histoire des activités agricoles et des paysages révélé par un outil en plein essor : l’ADN sédimentaire lacustre. Emilie Chalmin, Etienne Dambrine, Bernard David, Pierre Faivre, Jérôme Poulenard. Sols et matières organiques : mémoires et héritages, Collection Edytem n°18, Edytem, pp. 81-102, 2015. ⟨hal-01876542⟩

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