Senior Researcher at CIRAD since April 2002. Twenty-two years of experience in agronomy and animal production for the characterization and modelling of dynamic interactions between crops and livestock systems. Research on integrated management of resources, herds, inputs and products and co-products at farm and territory level; dynamics of adaptation of ruminant production systems to a changing environment; agronomic impact of organic fertilization of natural grasslands; proposal for sustainable production systems from a technical, socio-economic and environmental point of view; and variability in the quality of feed resources. The main activities are research for the sustainable development of tropical and Mediterranean regions, expertise, training, team management, project management, dissemination of results, and knowledge transfer. PI and Co-PI on major research and development projects won trough competitive bids from funders including: European Union, FAO, and African Union. Expertise in 15 countries [South Africa, Australia, Benin, Burkina Faso, Cuba, Spain, France (Reunion Island, New Caledonia), India, Madagascar, Mozambique, Portugal, Senegal, Union of Comoros, Venezuela, Vietnam]. Published 30 SCI-journal publications, with an H-index of 17.