I am a research director at the CNRS, and team leader at the Biological Institute of the Ecole Normale Supérieure in Paris. I am an evolutionary ecologist broadly interested in biodiversity research. In my team, we combine mathematics, bioinformatics and global scale data to study questions ranging from macroevolution and macroecology to community assembly and biogeography. We particularly enjoy working with molecular phylogenies; we use them to study speciation, extinction, dispersal, phenotypic evolution and community assembly. We work closely with mathematicians, phylogeneticists, and field ecologists.