1. CREAF Cerdanyola del Vallès; 08193 Barcelona Spain
2. CTFC; Ctra. St Llorenç de Morunys km 2 25280 Solsona Spain
3. InForest Joint Research Unit (CTFC-CEMFOR); 25280 Solsona Spain
4. CSIC; 08193 Cerdanyola del Vallès Spain
5. Department of Integrative Biology and Jepson Herbarium; University of California Berkeley; Berkeley California 94720 USA
6. Department of Environmental Science, Policy, and Management; University of California Berkeley; Berkeley California 94720 USA
7. Unitat d'Ecologia; Department Biologia Animal; Biologia Vegetal i Ecologia; Universitat Autònoma Barcelona; Cerdanyola del Vallès 08193 Barcelona Spain