1. Ecology and Resource Management Unit, Faculty of Science, Engineering and Agriculture, University of Venda, Thohoyandou 0950, South Africa
2. Aqua Plantae Research Group, University of Venda, Thohoyandou 0950, South Africa
3. Material Science and Engineering, School of Materials, Water, Energy and Environmental Science, Nelson Mandela African Institution of Science and Technology, Arusha, Tanzania
4. Department of Microbiology, School of Life Sciences, Federal University of Technology, Akure, Nigeria
5. Department of Microbiology, Faculty of Science, Engineering and Agriculture, University of Venda, Thohoyandou 0950, South Africa
6. Department of Earth Science, University of Venda, Thohoyandou 0950, South Africa