Onisimo Mutanga, School of Agricultural, Earth and Environmental Sciences. Geography department, University of KwaZulu-Natal, South Africa, Email: mutangao@ukzn.ac.za.
Elfatih M. Abdel-Rahman, School of Agricultural, Eearth and Environmental Sciences. Geography department, University of KwaZulu-Natal, South Africa, Email: elfatihabdelrahman@gmail.com.
Jens Gebauer, Professor of Sustainable Agricultural Production Systems with special focus on Horticulture and Humboldt-Representative, Rhine-Waal University of Applied Sciences, D-47533 Kleve, Germany, Email: jens.gebauer@hochschule-rhein-waal.de.
Timothy Dube, Institute for Water Studies, Deptment of Earth Sciences, University of the Western Cape, Private Bag X17, Bellville, 7535, South Africa, Email: tidube@uwc.ac.za.