1. Department of Plant Sciences, Forest Ecology and Conservation, University of Cambridge, Cambridge, UK
2. Faculty of Forest Sciences, University of Eastern Finland, Joensuu, Finland
3. School of Natural Sciences, Bangor University, Bangor, UK
4. College of Forestry and Natural Environment, Research Group SILVANET, Universidad Politecnica de Madrid, Ciudad Universitaria, Madrid, Spain
5. Departament of Forestry, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, Brazil
6. Department of Forest Sciences, University of São Paulo, Luiz de Queiroz College of Agriculture, Piracicaba, Brazil
7. Department of Geographical Sciences, University of Maryland, College Park, MD, USA
8. Biosciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, USA