1 Wildlife Conservation Research Unit, Department of Zoology, University of Oxford, The Recanati-Kaplan Centre, Tubney, Oxfordshire, OX13 5QL, UK.
2 IUCN SSC Sustainable Use and Livelihoods Specialist Group, 1196, Gland, Switzerland.
3 Fenner School of Environment and Society, Australian National University, 0200 ACT, Australia.
4 Wildlife Conservation Research Unit, Department of Zoology, University of Oxford, The Recanati-Kaplan Centre, Tubney, Oxfordshire, OX13 5QL, UK. paul.johnson@zoo.ox.ac.uk.
5 Namibian Association of CBNRM Support Organisations, Windhoek, Namibia.
6 Natural Resources Group, International Institute for Environment and Development, London WC1X 8NH, UK.