1. Department of Ecology and Evolution University of Lausanne 1015 Lausanne Switzerland
2. Department of Biology West Chester University West Chester PA 19383 USA
3. Department of Plant Biology University of Minnesota St Paul MN 55108 USA
4. School of Biological Sciences Monash University Melbourne VIC 3800 Australia
5. School of Biological Sciences Washington State University Pullman WA 99164 USA
6. CEFE UMR 5175 CNRS Universite de Montpellier Université Paul‐Valery Montpellier EPHE CEFE 34293 Montpellier Cedex 05 France
7. Kellogg Biological Station and Department of Plant Biology Michigan State University Hickory Corners MI 49060 USA
8. Department of Ecology, Evolution, and Behavior University of Minnesota St Paul MN 55108 USA
9. Department of Biology University of Pittsburgh Pittsburgh PA 15260 USA
10. Department of Evolution, Ecology, and Organismal Biology The Ohio State University Columbus OH 43210 USA
11. Department of Biological Sciences University of Illinois at Chicago 840 W Taylor St, M/C 067 Chicago IL 60607 USA
12. Laboratory of Biogeography and Ecology Department of Geography University of the Aegean 81100 Mytilene Lesvos Greece
13. Department of Environmental Science University of San Francisco San Francisco CA 94117‐1049 USA
14. Departmento Ecología Facultad de Ciencias Universidad de Granada UGR 18071 Granada Spain
15. Estación Experimental de Zonas Áridas EEZA‐CSIC Carretera de Sacramento s/n, La Cañada de San Urbano EEZA 04120 Almeria Spain
16. Department of Botany and Zoology Stellenbosch University Stellenbosch 7602 South Africa
17. Department of Biological Sciences University of Calgary Calgary Alberta T2N1N4 Canada
18. Department of Biological Science Florida State University Tallahassee FL 32306 USA