Paul’s main topics of research are plankton ecology, biogeography and genomics in the context of climate change. He is interested in understanding acclimation and adaptation capacities of plankton in the context of the seascape and of climate change using data analysis (omics) as well as mechanistic and statistical models. The seascape includes the multiple processes at play in the ocean notably physico-chemical processes such as currents, temperature, light and nutrients supplies and biological processes such as neutral genetic drift, natural selection and biotic interactions. He is in the Weitz lab to develop mechanistic models of phytoplankton and virus ecology at large scale to study their biogeography and ecology in a changing climate.