I am generally interested in how fish (and sometimes other aquatic organisms) are affected by different environmental stressors. These stressors include things like low oxygen, parasites, waves and fluctuating water flow,  high salinity, etc. I try to figure out what effects these stressors have on populations of fishes in terms of their morphology, physiology and behaviour. I am especially interested in variation within species (intraspecific differences) along natural environmental gradients.

• Molecular system and evolution of Asteraceae
• Phylogeny of North-American asters
• Biogeography and floristic
• FFlora of Québec-Labrador and Newfoundland: repartition and conservation
• Projects: "Flore du Québec-Labrador nordique" and "Flora of North America"