Dr. Didier Jouffre is a senior scientist working on fisheries and marine biology at the IRD – a French research institute working in cooperation with developing countries - since 1991. For IRD, he took an active part in various scientific programmes dealing with marine resources in West Africa, in collaboration with national scientific institutions. He worked for several years within the research institutes of Mauritania (IMROP, 1993-1996), and Senegal (CRODT, 1996-2000) and also made several missions to other institutes of this region, in the course of several regional projects supported by EU (FIAS: http://www.csrpsp.org/site-siap/en/index.html; ISTAM: www.projet-istam.org; ECOST, etc.). Presently based at the IFAN (Institut Fondamental d’Afrique Noire) in the University of Dakar Cheikh Anta Diop (UCAD) and occupying the position of deputy Director of the Labep-AO (IRD/IFAN, West-Africa Fish Biology and Ecology Laboratory), Dr Jouffre current research is dealing with multi-specific and ecosystem indicators applied to fisheries and to coastal ecosystem assessment, with a particular attention paid to the implementation of practical tools for an Ecosystem Approach of Fisheries (EAF) adapted to developing countries. More broadly this research deals with the question of human impact on marine ecosystems.