In 2015-2017, he was scientific advisor for life and wildlife sciences, climate and ocean for Ségolène Royal, minister of environment, energy and sea (MEEM) and scientific advisor for the chairman of MNHN. Presently, he is chairman of the national centre for forest entomology (“National Office of forests”), member of the Scientific Council of CIRAD, Centre of international cooperation in agronomic research for the development (Centre de coopération internationale en Recherche Agronomique pour le Développement), member of the Committee for Improvement of the Scientific Centre of Monaco (Comité de Perfectionnement du Centre Scientifique de Monaco), member of the bureau of IPBES, International Platform for Biodiversity and Ecological Services of United Nations. In 2013 he received the Albert 1st great medal for his career, devoted to the sea and the ocean. Presently he is the chairman of the Scientific Board of the French Agency for Biodiversity.
GB is a specialist in marine and terrestrialbiodiversity and environmental physiology. He also devoted much of his work to the biological bases of aquaculture. He is the author of more than 400 scientific articles(more than 150 being A-rated, h-index at 39 with more than 4 000 citations), scientific popularisation, book chapters, lectures and he is often invited in France and abroad. He took part to more than 140 missions abroad in more than 100 countries in the world. He participates to many lectures, either public or devoted to community staff, institutions and firms on various subjects: ocean life, living resources, the role of water in life, and biodiversity.He was deeply involved in the organization of COP21. He often appears on radio and TV and holds many conferences (more than 100 every year) in many countries.