My research activities focus on the reconstruction of ancient climates and associated biogeochemical interactions. I am particularly interested in reconstructing paleoenvironmental changes in the Lower Cretaceous period (Valanginian) and in the Quaternary through micropaleontological (coccoliths), mineralogical (clays) and geochemical (COT, CaCO₃, XRF,  δ¹³C, δ¹⁸O) studies of marine sediment archives.

In recent years, I have focused on variations in coccolithophore production in the Southern Ocean and in the Gulf of Bengal in order to: 1) understand the impact of the biological pump in the southern high latitudes on the carbon cycle over the course of the last 800 ka (and particularly Terminations 1 and 5) and ii) reconstruct the dynamic of the Indo-Asian monsoon and more generally the water cycle over the course of the Last Deglaciation.

The study of coccolithophores is undertaken via the Système de Reconnaissance Automatique des Coccolithes (SYRACO), developed at the CEREGE and installed at GEOPS.