1. Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada T6G 2R3
2. Department of Biological Sciences, Thompson Rivers University, Kamloops, British Columbia, Canada V2C 0B8
3. Department of Natural Resource Sciences, McGill University, St-Anne-de-Bellevue, Québec, Canada H9X 3V9
4. Department of Biology, Trent University, Peterborough, Ontario, Canada
5. Department of Environment, Government of Yukon, Whitehorse, Yukon, Canada
6. Department of Renewable Resources, University of Alberta, Edmonton, Alberta, Canada
7. Department of Zoology, University of British Columbia, Vancouver, British Columbia, Canada
8. Department of Biological Sciences, University of Toronto Scarborough, Toronto, Ontario, Canada