Mathieu  Mongin’s  research  is  focused  on  BioGeochemical  Cycles  (BGC)  and  marine  ecosystems  in  the ocean. He aims to develop original and innovative re- search  to  understand  biogeochemical  biological  and physical  interactions,  particularly  those  which  affect marine costal environment, including their productivity, carbon export and the response of these processes to  external  perturbation,  climate  variability  climate change, ocean acidification.