**Author details**

Thomas Marambanyika1 \* and Mbulisi Sibanda2

\*Address all correspondence to: tmarambanyikat@yahoo.co.uk; marambanyikat@staff.msu.ac.zw

1 Department of Geography and Environmental Studies, Midlands State University, Gweru, Zimbabwe

2 Discipline of Environmental Sciences, School of Agricultural, Earth and Environmental Sciences, University of KwaZulu Natal, Scottsville, South Africa
