1 Centre d'Ecologie Fonctionnelle et Evolutive (UMR 5175, CEFE - Campus CNRS), 1919 Route de Mende, Montpellier 34293, France; Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO 63110, USA. Electronic address: james.aronson@cefe.cnrs.fr.
2 University of Florida, Department of Biology, Gainesville, FL 32611, USA; Organization for Tropical Studies, Duke University, 410 Swift Avenue, Box 90630, Durham, NC 27705, USA.
3 Departamento de Ciencias Naturales y Matemáticas, Pontificia Universidad Javeriana Seccional Cali, Cali, Colombia.
4 Basque Centre for Climate Change (BC3), 48008 Bilbao, Spain; IKERBASQUE, Basque Foundation for Science, 48013 Bilbao, Spain.
5 Kings Park and Botanic Garden, West Perth 6005, Australia.
6 University of Tennessee, Department of Ecology and Evolutionary Biology, Knoxville, TN 37996, USA.