Igor LehnherrAssistant Professor Geography, Geomatics and Environment
My Research Interests
In the Environmental and Aquatic Biogeochemistry Laboratory, we conduct research to understand the impacts of environmental stressors such as contaminants, nutrients, and climate change on aquatic ecosystems, focusing primarily on the Arctic and Boreal ecoregions. A biogeochemical perspective is required because many environmental problems, including heavy metal pollution, eutrophication and climate change, are caused by anthropogenic disturbances to natural biogeochemical cycles. Our research is interdisciplinary – integrating physical geography, limnology, environmental chemistry, and ecology – and combines emerging analytical techniques, ecosystem-scale field studies and controlled experiments to elucidate how humans impact the natural world we live in.
I participate in the following research clusters:
Graduate Student Recruitment
I welcome motivated graduate students interested in physical geography, biogeochemistry and environmental science. Current and potential projects include: i) impacts of climate change on mercury cycling and methylmercury production in Arctic ecosystems; ii) quantifying ecosystem metabolism (primary production and respiration) in ice-covered Arctic lakes; iii) reconstructing long-term trends in atmospheric mercury concentrations using tree-rings and ice cores; and iv) climate change impacts on lake and watershed biogeochemistry (carbon and nutrient cycling) in northern regions. Interested students are encouraged to please contact me for the most up to date information on potential opportunities at the undergraduate, graduate and post-doc levels. Please include with your inquiry a copy of your CV and latest transcripts.