[1] Univ Cape Town, African Climate & Dev Initiat ACDI, Cape Town, South Africa
[2] Univ Free State, Dept Urban & Reg Planning, Bloemfontein, South Africa
[3] Namibia Univ Sci & Technol, Dept Architecture & Spatial Planning, Windhoek, Namibia
[4] Univ Western Ontario, Dept Geog & Environm, London, ON, Canada