A coupled hydrodynamic biological model for cyanobacteria dynamics in reservoirs

Ali Fadel (1) , Bruno J. Lemaire (1) , Brigitte Vinçon-Leite (1)

1 LEESU - Laboratoire Eau, Environnement et Systèmes Urbains

The potentially harmful phytoplankton bloom is a world wide problem that became frequent in the last decade. Microcystis aeruginosa is a toxic cyanobacterium that proliferates frequently in reservoirs deteriorating their water quality. Hence, a monitoring and warning system to forecast the risk of cyanobacteria proliferation became essential for lake managing. For that purpose, a one dimensional hydrodynamic (DYRESM) model coupled to an ecological model (CAEDYM) has been applied to simulate the growth of cyanobacteria colonies found in a French reservoir. As primary results the model was able to follow the trend of the cyanobacteria dynamics in the reservoir.

Mots clés: Urban lake; cyanobacteria modelling; hydrologic watershed modelling; high frequency measurements

Domaines: Environnement et Société

Ali Fadel, Bruno J. Lemaire, Brigitte Vinçon-Leite. A coupled hydrodynamic biological model for cyanobacteria dynamics in reservoirs. 11th edition of the World Wide Workshop for Young Environmental Scientists (WWW-YES-2011) - Urban Waters: resource or risks?, Jun 2011, Arcueil, France. ⟨hal-00607942⟩