مؤتمر
Potential of environmental DNA for tracing land-use based sediment sources
| العنوان: | Potential of environmental DNA for tracing land-use based sediment sources |
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| المؤلفون: | Foucher, Anthony, Evrard, O., Ficetola, G, Francesco, Gielly, Ludovic, Poulain, Julie, Giguet-Covex, Charline, Laceby, J, Patrick, Salvador-Blanes, Sébastien, Cerdan, Olivier, Poulenard, Jérôme |
| المساهمون: | Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Géochimie Des Impacts (GEDI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Laboratoire d'Ecologie Alpine (LECA ), Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Università degli Studi di Milano = University of Milan (UNIMI), Génomique métabolique (UMR 8030), Genoscope - Centre national de séquençage Evry (GENOSCOPE), Université Paris-Saclay-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université d'Évry-Val-d'Essonne (UEVE)-Centre National de la Recherche Scientifique (CNRS), Environnements, Dynamiques et Territoires de Montagne (EDYTEM), Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS), Environmental Monitoring and Science Division of Alberta (EMSD), Alberta Government, GéoHydrosystèmes COntinentaux (GéHCO EA6293), Université de Tours (UT), Bureau de Recherches Géologiques et Minières (BRGM) |
| المصدر: | EGU General Assembly 2020 ; https://cea.hal.science/cea-02569312Test ; EGU General Assembly 2020, May 2020, Vienne, Austria. ⟨10.5194/egusphere-egu2020-8358⟩ |
| بيانات النشر: | HAL CCSD |
| سنة النشر: | 2020 |
| المجموعة: | Université Grenoble Alpes: HAL |
| مصطلحات موضوعية: | [SDE]Environmental Sciences, [SDU]Sciences of the Universe [physics], [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces, environment |
| جغرافية الموضوع: | Vienne, Austria |
| الوصف: | International audience ; Environmental DNA (eDNA) is a complex mixture of genetic material extracted from environmental samples like soil, water or sediment in order to obtain reliable information on the past and current biological communities. In recent years, the eDNA technique was successfully applied to sediment accumulated in lakes for providing information on past land use and land cover changes in their drainage areas. Recently, the potential of eDNA for providing detailed information on the plant species found in sediment sources was investigated. These research highlight the powerful potential of this method for improving our ability to detect the vegetal communities causing erosion and sediment delivery. Nevertheless, some fundamental questions remain like for example the DNA memory effect of soils. How long the plant signature can persist in soils? Are we recording the last species cultivated or a mixture of past plants in agricultural areas? These issues are of prime importance for examining the potential of eDNA as a new sediment tracer. To answer these questions, two contrasted sites located in intensively cultivated environments in France were studied. In the first site, soil samples were collected (n=30) in plots for which the crop rotation history was well documented since 1975. In particular, crops cultivated only once during the rotation were used as potential chronological markers. The impact of agricultural practices on eDNA preservation was also investigated comparing soil signatures under conventional and conservation farming. In the second site, samples were collected (n=40) to compare the abundance of currently observed taxa versus detected taxa in cropland, grassland, woodland and river channel banks. |
| نوع الوثيقة: | conference object |
| اللغة: | English |
| العلاقة: | cea-02569312; https://cea.hal.science/cea-02569312Test; https://cea.hal.science/cea-02569312/documentTest; https://cea.hal.science/cea-02569312/file/EGU2020-8358-print.pdfTest |
| DOI: | 10.5194/egusphere-egu2020-8358 |
| الإتاحة: | https://doi.org/10.5194/egusphere-egu2020-8358Test https://cea.hal.science/cea-02569312Test https://cea.hal.science/cea-02569312/documentTest https://cea.hal.science/cea-02569312/file/EGU2020-8358-print.pdfTest |
| حقوق: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.5884CFC4 |
| قاعدة البيانات: | BASE |
| DOI: | 10.5194/egusphere-egu2020-8358 |
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