1. Landmark Foundation, Riversdale, South Africa
2. Department of Biodiversity and Conservation Biology, University of the Western Cape, Cape Town, South Africa
3. South African Environmental Observation Network (SAEON): Arid Lands Node, Kimberley, South Africa
4. Department of Biological Sciences, University of Cape Town, Cape Town, South Africa
5. Centre for Environmental Management, University of the Free State, Bloemfontein, South Africa