1. Canadian Rivers Institute and Biology Department University of New Brunswick 100 Tucker Park road Saint John New Brunswick E2L 4L5 Canada
2. Department of Biology and School of Geography and Earth Sciences McMaster University 1280 Main St W Hamilton Ontario L8S 4L8 Canada
3. Canadian Forest Service Great Lakes Forestry Centre Natural Resources Canada 1219 Queen St. East Sault Ste. Marie Ontario P6A 2E5 Canada
4. School of Environmental Sciences University of Guelph Guelph Ontario N1G 2W1 Canada