Gilles KLEITZ (PhD) has been working for thirty years on the links between biodiversity conservation and sustainable development. He has conducted policies and projects in different countries, including France, for the public service, research institutions, non governmental organizations and at Agence Française de Développement. He has been advisor to several ministers, in the field of environment as well as overseas development aid. He has participated in several international negotiations. He served as superintendent of the French Guyana National Park. Gilles KLEITZ is a Senior Civil Engineer, MSc (Agronomy) and holds a doctorate in Development sciences from IDS/Sussex University. He was made Chevalier de la Légion d’Honneur. He is presently director for Natural Resources, Agriculture, Water, Forests and Oceans at the Agence Française de Développement.