1. Aquatic Systems Research Group, School of Biology and Environmental Sciences, University of Mpumalanga, Nelspruit, South Africa
2. Department of Geography and Geo-Information Sciences, University of Venda, Thohoyandou, South Africa
3. Department of Zoology and Entomology, Rhodes University, Makhanda, South Africa
4. Department of Biological Sciences and Biotechnology, Botswana International University of Science and Technology, Palapye, Botswana
5. GIS Resource Centre, University of Venda, Thohoyandou, South Africa
6. GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel Kiel, Germany