1. Pearce & Associates Ecological Research, 1405 Third Line East, Sault Ste. Marie, ON P6A 0E1, Canada.
2. Ontario Forest Research Institute, Ontario Ministry of Northern Development, Mines, Natural Resources and Forestry, 1235 Queen Street East, Sault Ste. Marie, ON P6A 2E5, Canada.
3. Great Lakes Laboratory for Fisheries and Aquatic Sciences, Fisheries and Oceans Canada, 1219 Queen Street East, Sault Ste. Marie, ON P6A 2E5, Canada.