My scientific activities are focused on plant population biology, that is to say, the study of ecological processes that occur at the population level, and which contribute to the spatial and temporal structure of diversity. I mainly perform experiments in natural populations, but I also perform experiments in controlled conditions and I use the tools of molecular biology. I am working on several plant species, but in particular on the maintenance of flower colour polymorphism in Iris lutescens and on the demography of an endemic species, Centaurea corymbosa.