Two Millennia of Complexity and Variability in a Perialpine Socioecological System (Savoie, France): The Contribution of Palynology and sedaDNA Analysis
Over the last two millennia, European Alpine ecosystems have experienced major changes in response to the important, yet fluctuating, impact of human activities. This study aims to reconstruct the environmental history of the last 1800 years on the western edge of the Alps by analyzing sediments fro...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-06-01
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| Series: | Frontiers in Ecology and Evolution |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fevo.2022.866781/full |
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| author | Erwan Messager Charline Giguet-Covex Elise Doyen David Etienne Ludovic Gielly Pierre Sabatier Mathilde Banjan Anne-Lise Develle Julien Didier Jérôme Poulenard Andréa Julien Fabien Arnaud |
| author_facet | Erwan Messager Charline Giguet-Covex Elise Doyen David Etienne Ludovic Gielly Pierre Sabatier Mathilde Banjan Anne-Lise Develle Julien Didier Jérôme Poulenard Andréa Julien Fabien Arnaud |
| author_sort | Erwan Messager |
| collection | DOAJ |
| description | Over the last two millennia, European Alpine ecosystems have experienced major changes in response to the important, yet fluctuating, impact of human activities. This study aims to reconstruct the environmental history of the last 1800 years on the western edge of the Alps by analyzing sediments from Lake Aiguebelette, a large lake located in the perialpine area. We have combined analyses of pollen and other palynomorphs, such as coprophilous fungal spores, together with sedimentary DNA (from plants and mammals) in order to reconstruct both vegetation and land-use histories. A sedimentological and geochemical analysis was also conducted in order to gain an understanding of changes in erosion dynamics in response to landscape modifications that were influenced by climate and human activities. This work highlights alternating phases of anthropization and agricultural abandonment allowing forest recovery. While pollen reflects the major phases of regional deforestation and afforestation related to the dynamic of farming activities, plant DNA provides precise information on the plants cultivated in fields, orchards and vegetable gardens over the past centuries. The combination of mammal DNA and coprophilous fungal spores completes this work by documenting the history of pastoral practices. |
| first_indexed | 2024-04-13T17:54:24Z |
| format | Article |
| id | doaj.art-9d091abd0e0345048eb2a7f22d7cdd9a |
| institution | Directory Open Access Journal |
| issn | 2296-701X |
| language | English |
| last_indexed | 2024-04-13T17:54:24Z |
| publishDate | 2022-06-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Ecology and Evolution |
| spelling | doaj.art-9d091abd0e0345048eb2a7f22d7cdd9a2022-12-22T02:36:35ZengFrontiers Media S.A.Frontiers in Ecology and Evolution2296-701X2022-06-011010.3389/fevo.2022.866781866781Two Millennia of Complexity and Variability in a Perialpine Socioecological System (Savoie, France): The Contribution of Palynology and sedaDNA AnalysisErwan Messager0Charline Giguet-Covex1Elise Doyen2David Etienne3Ludovic Gielly4Pierre Sabatier5Mathilde Banjan6Anne-Lise Develle7Julien Didier8Jérôme Poulenard9Andréa Julien10Fabien Arnaud11UMR 5204 EDYTEM Environnement Dynamique et Territoire de la Montagne, CNRS/Université Savoie Mont Blanc, Le Bourget-du-Lac, FranceUMR 5204 EDYTEM Environnement Dynamique et Territoire de la Montagne, CNRS/Université Savoie Mont Blanc, Le Bourget-du-Lac, FrancePaleobotalab, Le Bourget-du-Lac, FranceUMR 042 CARRTEL Centre Alpin de Recherche sur les Réseaux Trophiques et Ecosystèmes Limniques, Université de Savoie Mont Blanc/INRAE, Le Bourget-du-Lac, FranceUMR LECA Université Grenoble Alpes, CNRS, Université Savoie Mont Blanc, Grenoble, FranceUMR 5204 EDYTEM Environnement Dynamique et Territoire de la Montagne, CNRS/Université Savoie Mont Blanc, Le Bourget-du-Lac, FranceUMR ISTerre Institut des Sciences de la Terre, Université Savoie Mont Blanc/Université Grenoble Alpes/CNRS/IRD/Université Gustave Eiffel, Chambéry, FranceUMR 5204 EDYTEM Environnement Dynamique et Territoire de la Montagne, CNRS/Université Savoie Mont Blanc, Le Bourget-du-Lac, FranceUMR 6249 Laboratoire Chrono-Environnement, Université Franche Comté, Besançon, FranceUMR 5204 EDYTEM Environnement Dynamique et Territoire de la Montagne, CNRS/Université Savoie Mont Blanc, Le Bourget-du-Lac, FranceUMR 5204 EDYTEM Environnement Dynamique et Territoire de la Montagne, CNRS/Université Savoie Mont Blanc, Le Bourget-du-Lac, FranceUMR 5204 EDYTEM Environnement Dynamique et Territoire de la Montagne, CNRS/Université Savoie Mont Blanc, Le Bourget-du-Lac, FranceOver the last two millennia, European Alpine ecosystems have experienced major changes in response to the important, yet fluctuating, impact of human activities. This study aims to reconstruct the environmental history of the last 1800 years on the western edge of the Alps by analyzing sediments from Lake Aiguebelette, a large lake located in the perialpine area. We have combined analyses of pollen and other palynomorphs, such as coprophilous fungal spores, together with sedimentary DNA (from plants and mammals) in order to reconstruct both vegetation and land-use histories. A sedimentological and geochemical analysis was also conducted in order to gain an understanding of changes in erosion dynamics in response to landscape modifications that were influenced by climate and human activities. This work highlights alternating phases of anthropization and agricultural abandonment allowing forest recovery. While pollen reflects the major phases of regional deforestation and afforestation related to the dynamic of farming activities, plant DNA provides precise information on the plants cultivated in fields, orchards and vegetable gardens over the past centuries. The combination of mammal DNA and coprophilous fungal spores completes this work by documenting the history of pastoral practices.https://www.frontiersin.org/articles/10.3389/fevo.2022.866781/fullland use historyvegetation historyAlpslast two millenniapollenerosion processes |
| spellingShingle | Erwan Messager Charline Giguet-Covex Elise Doyen David Etienne Ludovic Gielly Pierre Sabatier Mathilde Banjan Anne-Lise Develle Julien Didier Jérôme Poulenard Andréa Julien Fabien Arnaud Two Millennia of Complexity and Variability in a Perialpine Socioecological System (Savoie, France): The Contribution of Palynology and sedaDNA Analysis Frontiers in Ecology and Evolution land use history vegetation history Alps last two millennia pollen erosion processes |
| title | Two Millennia of Complexity and Variability in a Perialpine Socioecological System (Savoie, France): The Contribution of Palynology and sedaDNA Analysis |
| title_full | Two Millennia of Complexity and Variability in a Perialpine Socioecological System (Savoie, France): The Contribution of Palynology and sedaDNA Analysis |
| title_fullStr | Two Millennia of Complexity and Variability in a Perialpine Socioecological System (Savoie, France): The Contribution of Palynology and sedaDNA Analysis |
| title_full_unstemmed | Two Millennia of Complexity and Variability in a Perialpine Socioecological System (Savoie, France): The Contribution of Palynology and sedaDNA Analysis |
| title_short | Two Millennia of Complexity and Variability in a Perialpine Socioecological System (Savoie, France): The Contribution of Palynology and sedaDNA Analysis |
| title_sort | two millennia of complexity and variability in a perialpine socioecological system savoie france the contribution of palynology and sedadna analysis |
| topic | land use history vegetation history Alps last two millennia pollen erosion processes |
| url | https://www.frontiersin.org/articles/10.3389/fevo.2022.866781/full |
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