1. Biodiversity Institute, Department of Zoology, Oxford University, Oxford, UK
2. Department of Biological Sciences, National University of Singapore, Singapore
3. World Agroforestry Center, Nairobi, Kenya
4. Environmental Change Institute, School of Geography and the Environment, Oxford University, Oxford, UK
5. Department of Natural Resources and Environmental Science, University of Illinois, Urbana-Champaign, IL, USA