1. School of Biological Sciences, The University of Western Australia, Crawley, WA 6009, Australia.
2. Grupo de Estudios Ambientales, IMASL-CONICET and Universidad Nacional de San Luis, Avenida Ejercito de los Andes 950 (5700), San Luis, Argentina.
3. Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, SE-901 83 Umeå, Sweden.
4. Smithsonian Tropical Research Institute, Apartado 0843-03092, Balboa, Ancon, Republic of Panama.
5. Asian School of the Environment, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798.
6. Centre sur la Biodiversité, Institut de Recherche en Biologie Végétale, Département de Sciences Biologiques, Université de Montréal, 4101 Sherbrooke Est, Montréal, QC H1X 2B2, Canada.