1. Oxford Martin School, University of Oxford, Oxford OX1 3BD, UK.
2. Earth and Life Institute, Université Catholique de Louvain, Louvain-la-Nueve, Belgium.
3. Conservation Biogeography Lab, Humboldt-Universität zu Berlin, 10099 Berlin, Germany.
4. Conservation Science Group, University of Cambridge Conservation Research Institute, Cambridge CB2 8QZ, UK.