1. Department of Zoology and Entomology, Forestry and Agricultural Biotechnology Institute , University of Pretoria, Pretoria, South Africa
2. Centre for Environmental Studies, Department of Geography, Geoinformatics and Meteorology, University of Pretoria, Pretoria, South Africa
3. School of Environmental Science, University of KwaZulu-Natal, Pietermaritzburg, South Africa
4. Council for Scientific and Industrial Research, Water Center, Pretoria, South Africa
5. United Nations Development Programme, Pretoria, South Africa