1. Basque Centre for Climate Change (BC3); 48008 Bilbao Spain
2. IKERBASQUE; Basque Foundation for Science; 48013 Bilbao Spain
3. Jasper Ridge Biological Preserve; Stanford University; Woodside CA 94062 USA
4. Natura y Ecosistemas Mexicanos A.C.; México DF 01000 México
5. C/Conrado del Campo 2; 28027 Madrid Spain
6. Missouri Botanical Garden; 4344 Shaw Blvd. St. Louis MO 63110 USA
7. Centre d'Ecologie Fonctionnelle et Evolutive (UMR 5175, Campus CNRS); 34293 Montpellier France