Dr. Timothée Brochier is a researcher at IRD, currently on assignment in Senegal. A physicist by training, his PhD focused on the modeling of physical and biological processes that interact in the key stages of reproduction of small pelagic fish, applying a comparative approach between the upwelling systems in the Humboldt and Canary currents. During his postdoc years he first deepened this approach in Peru where he addressed the impact of climate change on small pelagic recruitment, then he developed individual centered modeling methods for fish life cycles first using a complete ecosystem model (Osmosis), then by creating a dedicated individual model for the study of small pelagic fishes spatial dynamics applied to describe sardinella migrations in West Africa. Since 2012 he has been also collaborating with mathematicians in France, Senegal and Vietnam on the construction of bio-economic fisheries models for artisanal and industrial fisheries in West Africa, addressing issues such as resource aggregation, fishing fleet mobility, international fishing agreements, marine protected areas and artificial reefs. He participates in the local coastal observation buoy follow up by including a passive acoustic sensor on it and developing the communication with fishermen. Since 2018 he has animated an interdisciplinary research group on artisanal fisheries mobility in Dakar and is now co-PI of the fisher’s mobility modeling task of HABITABLE (WP3).