- Since 2013 Full Professor at the University of Avignon, IUT, Research Unit (UMR) IMBE
- 2008-2013 Assistant/Associate Professor (Maître de Conférences) in Plant Ecology, Agrocampus Ouest, Angers (France), UMR IGEPP
- 2011 Habilitation (HDR) at the University of Angers
- 2006-2008 External lecturer at the Université of Halle (Germany), Institute of Geobotany (50%) and freelance work (environmental consultancy,
organic agriculture, 50%) - 2001-2006 Senior postdoc and coordinateur of two international research projects, University of Fribourg (Switzerland), Unit of Ecology and Evolution
- 1998-2001 Postdoc (grant of the German Research Foundation, DFG) at the Centre for Environmental Research (UFZ) Halle-Leipzig (Germany), Department of Community Ecology (75%); external lecturer at the University of Halle, freelance work (25%)
- 1997-1998 Postdoc (100% teaching position) at the University of Halle
- 1996-1997 freelance work (environmental consultancy, organic agriculture)
- 1992-1996 PhD student at the University of Halle, Institute of Geobotany
