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Expert(s) for : Cyanobactéries
- benthic invertebrates
- St. Lawrence
Modelling of the distribution and abundance of benthic algae (periphyton). My more recent research is centred on:
- the effects of residential development on the littoral algae and invertebrates in the Laurentian lakes;
- the distribution of filamentous algae and benthic cyanobacteria in the St. Lawrence River and implications of their proliferation on the chemistry and trophy of the river;
- the response of diatom communities to metal pollution and their use as early indicators of ecosystem recovery.
- marine biology
- invasive species
- nitrogen fixation
- nitrogen genes
Biogeochemistry and ecosystem impacts of microbial activities in the carbon and nitrogen cycle. Humans have greatly disturbed the global nitrogen cycle and the research in our lab is aimed at characterizing the fate and consequences of excess nitrogen in various ecosystems.
Our research covers various levels, from the role of bacteria to the effects of commercial fisheries on the global displacement of nitrogen, and the impact of invasive species on biogeochemical cycles. We have a number of projects under way involving Quebec and US lakes and rivers, the St. Lawrence Estuary and the Arctic Ocean.