ECOLOGY AND TROPHIC EQUILIBRIUM IN RESERVOIRS AND REGULATED ECOSYSTEMS
River impoundment and the alteration of the hydrological regime of aquatic ecosystems are suggested to be one of the major disturbances to aquatic ecosystem functions and biodiversity. Reservoirs are "novel"ecosystemsthat combinefeaturesoflakes(i.e.vertical gradients)and rivers(i.e.horizontal gradients). We know very little about the dominantecological processesin reservoirs,how they can be comparedto natural lakes andrivers,and howtrophic interactionsandfood webs evolvein reservoirs. Click on the different topics to learn more about them!
Collaborators: Dr. Irene Gregory-Eaves (McGill U.); Dr. Christopher Solomon (Cary Institute); Dr. Christian Nozais (UQAR); Dr. Manuele Margni (CIRAIG; École Polytechnique); Christian Turpin (Hydro-Québec)
Multi-trophic field survey comparing lakes and reservoirs with different winter drawdown
As a multidisciplinary team, we are conducting a multi-trophic levels field survey (i.e. primary production, macroinvertebrates and fish) in parallel with a paleo-limnological study to compare the productivity and the abundance of organisms between natural lakes and reservoirs experiencing different winter water drawdown.
Impacts of fluctuating water levels in the St. Lawrence River and its fluvial lakes
I also worked on a 5-year, large scale project with scientists and specialists from Environment Canada to predict the response of environmental indicators (i.e. wetlands, submerged macrophytes, fish, birds and mammals) to various water levels regulation scenarios in the St. Lawrence River and its fluvial lakes (Talbot et al. 2006).