Ryan H.S. Hutchins, University of Alberta, Edmonton, AB, Canada, Suzanne Tank, University of Alberta, Biological Sciences, Edmonton, AB, Canada, David Olefeldt, University of Guelph, Guelph, ON, Canada, William L Quinton, Wilfrid Laurier University, Geography and Environmental Studies, Waterloo, ON, Canada, Christopher Spence, Environment and Climate Change Canada, Watershed Hydrology and Ecology Research Division, Saskatoon, SK, Canada, Nicole Dion, Government of the Northwest Territories, Yellowknife, NT, Canada and Samson G Mengistu, National Research Council c/o US Environmental Protection Agency, Office of Research and Development, Cincinnati, OH, United States