Missions This position will continue research initiated within the BIOSTASES project led by Michel Loreau. BIOSTASES is an ambitious, innovative ERC-funded research project that provides new perspectives on the functioning, stability, and sustainability of ecological and coupled social–ecological systems in the face of environmental changes. It contributes to bridging the gaps between theoretical and empirical ecology and between ecology and social sciences, and to developing the theoretical bases of new approaches to biodiversity conservation, landscape management, and sustainable development. Activities It includes four main research themes: (1) developing new theoretical approaches to ecological stability; (2) ecosystem stability and diversity-stability relationships at multipl