1. Biogeography and Geomatics; Department of Physical Geography; Stockholm University; 10691 Stockholm Sweden
2. Department of Biology; University of York; York YO10 5DD UK
3. CONACYT; Instituto de Ecología, A.C.; Centro Regional del Bajío; Av. Lázaro Cardenas 253 Pátzcuaro Michoacán 61600 México
4. NERC Centre for Ecology & Hydrology; Benson Lane Wallingford Oxfordshire OX10 8BB UK
5. Lactuca: Environmental Data Analyses and Modelling; 1112 NC Diemen The Netherlands
6. The James Hutton Institute; Craigiebuckler Aberdeen AB15 8QH UK
7. Ecology & Biodiversity Group; Department of Biology; Utrecht University; Padualaan 8 3584 CH Utrecht The Netherlands
8. Department of Renewable Resources; University of Alberta; 116 St. and 85 Ave. Edmonton AB T6G 2R3 Canada
9. Yukon Research Centre; Yukon College; 500 College Drive Whitehorse YT Y1A 5K4 Canada
10. Mediterranean Institute of Advanced Studies (UIB-CSIC); C/Miquel Marqués 21, 07190-Esporles Mallorca Balearic Islands Spain
11. Department of Ecology and Evolutionary Biology; University of Toronto; 3359 Mississauga Road Mississauga ON L5L 1C6 Canada