[1] Univ Ottawa, Dept Biol, Ottawa, ON K1N 6N5, Canada
[2] Univ Calgary, Fac Environm Design, Calgary, AB T2N 1N, Canada
[3] York Univ, Dept Biol, Toronto, ON M3J 1P3, Canada
[4] Univ Reading, Sch Agr Policy & Dev, Reading RG6 6AR, Berks, England
[5] Univ Mons, Dept Zool, B-7000 Mons, Belgium
[6] UFZ Helmholtz Ctr Environm Res, Dept Community Ecol, D-06120 Halle, Germany
[7] Wildlife Preservat Canada, Guelph, ON N1H 6J2, Canada
[8] Univ Vermont, Gund Inst, Burlington, VT 05405 USA
[9] Univ Connecticut, Dept Ecol & Evolutionary Biol, Storrs, CT 06269 USA
[10] Yale Univ, Peabody Museum Nat Hist, Div Entomol, New Haven, CT 06511 USA
[11] Univ Alaska Fairbanks, Univ Alaska Museum, Fairbanks, AK 99775 USA
[12] ARS, USDA, Subarctic Agr Res Unit, Fairbanks, AK 99775 USA