1. Instituto de Biología Subtropical (IBS) CONICET–UNaM Bertoni 85 Puerto Iguazú Misiones 3370 Argentina
2. Department of Forest and Conservation Sciences University of British Columbia 2424 Main Mall Vancouver British Columbia V6T 1Z4 Canada
3. Biology Department University of Saskatchewan 112 Science Place Saskatoon Saskatchewan S7N 5E2 Canada
4. Science & Technology Branch Environment and Climate Change Canada 5421 Robertson Road, R.R. 1 Delta British Columbia V4K 3N2 Canada