1. Department of Biological Sciences, University of Alberta, Edmonton, Alberta T6G 2E9, Canada
2. Department of Earth and Environmental Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
3. Canada Centre for Inland Waters, Environment and Climate Change Canada, Burlington, Ontario L7S 1A1, Canada
4. Department of Geography, Geomatics and Environment, University of Toronto-Mississauga, Mississauga, Ontario L5L 1C6, Canada
5. Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, Alberta T6G 2R3, Canada