Affiliation: | 1. Department of Zoology, University of British Columbia, 6270 University Blvd., Vancouver, BC, Canada V6T 1Z4;2. Present address: Section of Ecology, Behavior and Evolution, University of California‐ San Diego, 9500 Gilman Drive # 0116, La Jolla, CA 92093‐0116. E‐mail:;3. John Muir Institute of the Environment, Tahoe Environmental Research Center, University of California, One Shields Ave., Davis, CA 95616, USA;4. Leibniz‐Institute of Freshwater Ecology and Inland Fisheries, Müggelseedamm 301, D‐12587 Berlin, Germany;5. Cooperative Freshwater Ecology Unit, Laurentian University, Sudbury, ON, Canada P3E 2C6;6. EAWAG, Department of Aquatic Ecology, 79 Seestrasse, Kastanienbaum, Switzerland;7. Ontario Ministry of the Environment, Dorset Environmental Science Centre, 1026 Bellwood Acres Road, Dorset, ON, Canada P0A 1E0;8. Fisheries & Oceans Canada, 501 University Crescent, Winnipeg, MB, Canada R3T 2N6;9. Département de Sciences Biologiques, Université de Montréal, C.P. 6128, Succ. Centre ville, Montréal, QC, Canada H3C 3J7;10. Center for Limnology – Trout Lake Station, University of Wisconsin‐Madison, Boulder Junction, WI 54512, USA;11. Department of Biology, York University, Toronto, ON, Canada M3J 1P3 |