Alexis GROLEAU

My research focuses on the carbon biogeochemical cycling in various natural settings, with emphasize on freshwater systems, rivers and lakes.
My investigation fields range from sites preserved from any human impact (National Park lakes), to locations exposed to strong urban pressure (the Seine river). In these systems, the use of new in situ technologies allows the measuring, in continuous and real time, of physico-chemical parameters that are crucial for a good understanding and a precise identification of the processes occurring along the water column. The integration of the obtained data at different time scales (from the hour to the year) permits to define new biogeochemical indicators that provide accurate information on the nature, intensity, and kinetics of the reactions controlling the carbon cycling.