1. Department
of Biology, University of Saskatchewan,
112 Science Place, Saskatoon,
Saskatchewan, Canada, S7N 5E2
2. Catchment Research Group, School
of Biosciences, Cardiff University, Cardiff,
United Kingdom, CF10 3AX
3. Department of Biology, Acadia University, 33 Westwood Avenue, Wolfville, Nova
Scotia, B4P 2R6
4. Pacific
Wildlife Research Centre, Environment Canada, 5421 Robertson Road, Delta, British
Columbia, Canada, V4K 3N2