Professional positions: CNRS senior scientist, Laboratoire Ecologie Fonctionnelle et Environnement – UMR 5245 (France; 2009-present). CNRS researcher, EcoLab – UMR 5245 (France; 2007-2009): Functional biodiversity and ecosystem functioning. CNRS researcher, Marine Microbiology, Geochemistry and Ecology Laboratory – UMR 6117 (France; 2002-2007): Bioturbation and biogeochemistry in marine coastal sediments. CNRS external researcher, Analytical and Marine Chemistry Department, Göteborg University (Sweden; 2000-2001): Fate of organic contaminants in coastal marine sediments: effects of bioturbating and bioirrigating activities of benthic macrofauna. CNRS researcher, Biogeochemistry and Oceanography Laboratory – UMR 6535 (France; 1997-2003): Interactions between bioturbation and bacterial processes. Fate of organic matter in the marine environment. Postdoctoral work, MSRC – State University of New York at Stony Brook (USA; 1997): Bioturbation and organic matter remineralization. Postdoctoral work, ISMER – Université du Québec à Rimouski (Canada; 1996-1997): Role of the Nereis virens digestive process on the fate of hydrocarbons in sediments. Postdoctoral work, HYCAR – Oceanography Center (France; 1995-1996): Interactions between bioturbation and fate of hydrocarbons in sediments. In situ experimentation. Postdoctoral work, OXYTHAU – Oceanography Center (France; 1994-1995): Bacterial anaerobic reductions of nitrate in sediments. Academic background: 2003 – Habilitation. Aix-Marseille II University, Oceanography Center (France): Bioturbation and biogeochemistry in marine coastal sediments: N-cycle and fate of organic matter [ Thesis in French]. 1994 – Ph.D. Aix-Marseille II University, Oceanography Center (France): Influence of bioturbation on denitrifying activity in coastal marine sediments. Effect of an exogenous supply of organic matter: the hydrocarbons [ Thesis in French]. 1990 – Master degree. Aix-Marseille II University, French Research Institute for Exploitation of the Sea (France): Assessment of metabolic activity in marine microalgae using microplate reader. Application to ecotoxicological tests.