EESS talk on "Non-linearities in lake responses to Climate"
Event details
| Date | 03.10.2017 |
| Hour | 12:15 › 13:15 |
| Speaker |
Dr Marie-Elodie Perga, Associate professor, Institute of Earth Surface Dynamics, UNIL, CH Short biography: Dr Marie-Elodie Perga is Associate Professor at the Institute of Earth Surface Dynamics at University of Lausanne since January 2017. After a PhD on Carbon fluxes in lake food webs at the INRA Thonon les Bains (France), she spent her post-doc at University of Victoria (Canada) studying plankton interactions in coastal lakes of Vancouver Islands. As “chargée” then “directeur” de Recherche at the CARRTEL, Thonon, she worked on the impacts of Climate Change on the biogeochemistry of the highly anthropogenized peri-alpine lakes resorting to high-resolution paleo-ecological methods. She is now pursuing the question of lakes vulnerability to climate change also on high-altitude lakes combining sediment archives and high frequency autonomous monitoring approaches. |
| Location | |
| Category | Conferences - Seminars |
Abstract:
In Ecology, we usually rely on the tacit assumption that ecosystems are responding linearly to environmental constrains, i.e. one condition of the forcing variable should trigger one and only one ecosystem state. At the opposite, non-linearities imply bifurcations in ecosystem responses to environmental drivers. Herein, we show the existence of non-linear responses of lakes biology and biogeochemistry at seasonal and centennial time-scales, with crucial implications on lake ecological vulnerability to climate change and cumulating environmental stressors.
In Ecology, we usually rely on the tacit assumption that ecosystems are responding linearly to environmental constrains, i.e. one condition of the forcing variable should trigger one and only one ecosystem state. At the opposite, non-linearities imply bifurcations in ecosystem responses to environmental drivers. Herein, we show the existence of non-linear responses of lakes biology and biogeochemistry at seasonal and centennial time-scales, with crucial implications on lake ecological vulnerability to climate change and cumulating environmental stressors.
Practical information
- General public
- Free
- This event is internal
Organizer
- EESS - IIE