As a conservation biologist, I am fascinated by the causes and consequences of the biodiversity crisis. Part of my work consists in measuring the anthropogenic pressures on the fate of biodiversity (Artificialization, Climate Change, Agricultural Practices and other disturbances on large spatial and temporal scales). For this purpose, I study empirical data sets of distribution and dynamics of communities (especially birds) that I relate to data documenting well-identified pressures. Another part of my work lies in philosophy of ecology and political ecology. In this case, I am interested in the normative content of the concepts and tools developed in ecology and in the power-knowledge relationships that shape biodiversity policies, promote nature protection or destruction.