1. Program in Ecology and Evolutionary Biology Department of BioSciences Rice University Houston Texas77005USA
2. Department of Botany University of British Columbia Vancouver British ColumbiaV6T 1Z2Canada
3. Department of Geography Memorial University 230 Elizabeth Avenue St John’s Newfoundland and LabradorA1B 3X9Canada
4. Department of Biological Sciences University of Lethbridge 4401 University Drive Lethbridge AlbertaT1K 3M4Canada
5. Department of Mathematical and Statistical Sciences University of Alberta Edmonton AlbertaT6G 2G1Canada
6. Department of Biological Sciences University of Alberta Edmonton AlbertaT6G 2G1Canada
7. Department of Mathematics and Statistics, and Department of Biology University of Ottawa Ottawa OttawaK1N 6N5Canada
8. Department of Environmental Science and Policy University of California–Davis Davis California95616USA
9. Department of Ecology and Evolutionary Biology University of Colorado Boulder Colorado80309USA
10. Department of Ecology, Evolution, and Behavior University of Minnesota St. Paul Minnesota55108USA
11. Department of Entomology Michigan State University 288 Farm Lane East Lansing Michigan48824USA
12. Department of Geography and Biodiversity Research Centre University of British Columbia 1984 West Mall Vancouver British ColumbiaV6T 1Z2Canada