1. W. M. Getz, L. Fortmann, J. Hilty, and M. I. Westphal are in the Department of Environmental Science, Policy, and Management, University of California, Berkeley, CA 94720-3112, USA.
2. D. Cumming is at the World Wildlife Fund for Nature (WWF), Southern Africa Regional Programme, Post Office Box CY, 1409, Causeway, Harare, Zimbabwe.
3. J. du Toit is at the Mammal Research Institute, Department of Zoology and Entomology, University of Pretoria, Pretoria 0002, South Africa.
4. R. Martin is an independent consultant, Post Office Box BW475, Borrowdale, Harare, Zimbabwe (formerly deputy director for Research, Department of National Parks and Wildlife Management, Zimbabwe, and chair of the IUCN Southern Africa Sustainable Use Specialist Group).
5. M. Murphree is with the Southern Africa Sustainable Use Specialist Group, Post Office Box MP 4, Mount Pleasant, Harare, Zimbabwe. N. Owen-Smith is at the Centre for African Ecology, Department of Zoology, University of the Witwatersrand, Private Bag 3, Wits 2050 South Africa.
6. A. M. Starfield is in the Department of Ecology, Evolution, and Behavior, University of Minnesota, St. Paul, MN 55108-6097, USA.