Legacy of Early Anthropogenic Effects on Recent Lake Eutrophication
Anthropocene 24 (2018) 72–87 Contents lists available at ScienceDirect Anthropocene journa l homepage: www.elsevier.com/locate/ancene Legacy of early anthropogenic effects on recent lake eutrophication (Lake Bénit, northern French Alps) a,b, c c c Manon Bajard *, David Etienne , Sébastien Quinsac , Etienne Dambrine , b c c b Pierre Sabatier , Victor Frossard , Jérémie Gaillard , Anne-Lise Develle , b b c Jérôme Poulenard , Fabien Arnaud , Jean-Marcel Dorioz a E.A. 6293 GeHCO, University of Tours, 37000 Tours, France b Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, EDYTEM, 73000 Chambéry, France c UMR INRA 42 CARRTEL, Université Savoie Mont Blanc, 73376 Le Bourget-du-Lac, France A R T I C L E I N F O A B S T R A C T Article history: Mountain lakes are integrated sentinels of changes in the terrestrial environment, where these changes Received 4 June 2018 threaten the quality of the ecosystem services these lakes provide, including high biodiversity, economic Received in revised form 22 November 2018 and leisure activities. Few evidentiary records exist of the long-term relationships between human Accepted 23 November 2018 pressure and observed impacts. Multiproxy analyses of the Lake Bénit sediment sequence, including Available online 28 November 2018 dating, grain-size, geochemistry, pollen, non-pollen palynomorphs and chironomid assemblage reconstructions, allowed reconstruction of past environmental evolution and lake trophic changes. Keywords: Combined with soil analyses of the catchment, these data provide a record of the relationships between Phosphorus Grazing human activities and the lake-catchment ecosystem, and show the effect of inundation of the shore previously used as pasture.
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