Fabrice Lizon
Summary
The specific problem of my current research deals with the spectral dependence of microalgae in relation to the structure of microalgae communities and the physico-chemical factors of coastal marine environments. Temperate coastal seas such as the English Channel are impacted by numerous turbid fluvial inputs and subjected to strong tidal hydrodynamics. These physical factors expose microalgae to very large variations in the light field available for photosynthesis, in intensity and quality. Changing climatic balances and hydrological regimes are also likely to change the turbidity of coastal waters and thus microalguale biodiversity and primary productivity. If this productivity decreases, then the absorption of nutrients from river basins will be lower and the quality of coastal waters and fisheries will be impaired. For this reason, my current second line of research focuses on determining in situ primary production on a seasonal scale using an original two-dimensional approach (FRRf profiler in the water column and FRRf Act2run on board or in the laboratory for measuring the photosynthesis-light relationships compared) since 2017.
Biological Oceanography Ecohydrology Ecosystem Science Marine Biology Plant Science