Charles-André Bost is a leader in the study of the foraging ecology of marine top-predators, conducting research for 25 years in the Southern Ocean with special emphasis on the impact of the climatic variability on sub-Antarctic marine food webs. He has also developed the approaches using marine predators borne as autonomous plate-forms to investigate physical changes in the Southern environment and monitor resource availability. Recent other research interests include seabird foraging energetic and conservation. He has been responsible for several research projects in Antarctic ecology, including an interdisciplinary research project funded by the French Polar Institute (IPEV), started in 2002. He has also been the global coordinator of the GLIDES project (Global Investigations on the Distribution of Endangered Antarctic Seabirds funded by the French National Agency for Research (ANR) aiming at making spatially-explicit proposals for the designation of marine protected areas for endangered seabirds of the southern oceans. He has also been the coordinator of an Interdisciplinary project GICC (funding: Ministère de l’Environnement, France) concerning the effect of climatic variability of pelagic food webs of the Southern ocean. He is author or co-author of more than 100 scientific papers in peer-reviewed journals.