1. Département de Biologie; Université de Sherbrooke; 2500 boulevard de l'Université Sherbrooke Quebec J1K 2R1 Canada
2. Centre for Biological Diversity and Scottish Oceans Institute; School of Biology; University of St. Andrews; St. Andrews Fife KY16 9TH United Kingdom
3. Department of Forest and Water Management; Forest & Nature Lab; Ghent University; BE-9090 Melle-Gontrode Belgium
4. Department of Geography; Memorial University; St. John's Newfoundland and Labrador A1B 3X9 Canada
5. Department of Plant Production; Ghent University; Proefhoevestraat 22 9090 Melle Belgium
6. National Ecological Observatory Network; Boulder Colorado 80301 USA
7. Department of Biology; University of Vermont; Burlington Vermont 05405 USA
8. School of GeoSciences; University of Edinburgh; Edinburgh EH9 3FF United Kingdom
9. School of Biology and Ecology, Sustainability Solutions Initiative; University of Maine; Orono Maine 04469 USA
10. Department of Mathematical Sciences; Loughborough University; Loughborough Leicestershire LE11 3TU United Kingdom