1. Restoration and Conservation Biology Research Group; Centre for African Ecology; School of Animal, Plant & Environmental Sciences; University of the Witwatersrand; WITS; Johannesburg 2050 South Africa
2. Restoration and Conservation Biology Research Group; School of Animal, Plant & Environmental Sciences; University of the Witwatersrand; WITS; Johannesburg 2050 South Africa
3. Centre for African Ecology; School of Animal, Plant & Environmental Sciences; University of the Witwatersrand; WITS; Johannesburg 2050 South Africa
4. Department of Global Ecology; Carnegie Institution for Science; 260 Panama Street Stanford CA 94305 USA
5. Chester F. Carlson Center for Imaging Science; Rochester Institute of Technology; 54 Lomb Memorial Drive Rochester New York 14623 USA
6. Remote Sensing Research Unit; Council for Scientific and Industrial Research (CSIR)-Meraka Institute; P.O. Box 395 Pretoria 0001 South Africa
7. Centre for Geoinformation Science; Department of Geography; Geoinformatics and Meteorology; University of Pretoria; Cnr Lynnwood and University Roads Hatfield 0083 Pretoria South Africa
8. Ecosystems Earth Observations, Natural Resources & Environment; Council for Scientific and Industrial Research (CSIR); P.O. Box 395 Pretoria 0001 South Africa