y2019m03b005 20190327150000 assa sbonga@assaf.org.za assa South African Journal of Science S. Afr. J. Sci 1996-7489 03272019 115 3/4 Ian Glenn Research Fellow, Communication Sciences, University of the Free State, Bloemfontein, South Africa Sam M. Ferreira Scientific Services, SANParks, Skukuza, South Africa Danie Pienaar Scientific Services, SANParks, Skukuza, South Africa 03272019 1 10.17159/sajs.2016/crossmark sajs.co.za false 2019-03-27 https://creativecommons.org/licenses/by/4.0/ https://creativecommons.org/licenses/by/4.0/ 10.17159/sajs.2019/5585 20190327150000 https://www.sajs.co.za/article/view/5585 https://www.sajs.co.za/article/view/5585/7511 https://www.sajs.co.za/article/view/5585/7511 https://www.sajs.co.za/article/view/5585/7511 https://www.sajs.co.za/article/view/5585/7511 https://www.sajs.co.za/article/view/5585/7511 https://www.sajs.co.za/article/view/5585/7511 https://www.sajs.co.za/article/view/5585/7511