1. Agroecology Georg‐August‐University Grisebachstr. 6 D‐37077 Göttingen Germany
2. Conservation Science Group University of Cambridge, Department of Zoology Downing Street Cambridge CB2 3EJ United Kingdom
3. Resource Ecology Group Wageningen University Droevendaalsesteeg 3a 6708 PB Wageningen The Netherlands
4. Alterra Animal Ecology Team P.O. Box 47 6700 AA Wageningen The Netherlands