Is the present Brackenridgea Nature Reserve large enough to ensure the survival of Brackenridgea zanguebarica Oliv.?

Koedoe - African Protected Area Conservation and Science

Field Value
Title Is the present Brackenridgea Nature Reserve large enough to ensure the survival of Brackenridgea zanguebarica Oliv.?
Creator Tshisikhawe, Milingoni P. van Rooyen, Magaretha W. Gaugris, Jerome Y.
Subject Conservation Conservation; extinction; local tribal authority; Nature reserve
Description The Brackenridgea Nature Reserve is a 110 ha protected area established by the provincial Limpopo Department of Economic Development, Environment and Tourism as a way of protecting the population of Brackenridgea zanguebarica, a species classified as critically endangered in South Africa. In the whole of South Africa, the species is found in only one small area around Thengwe–Mafukani in Venda. It is threatened with extirpation due to high demand for its medicinal bark. This study investigated the adequacy of the reserve to conserve the species using a method established in 2001 by Burgman et al. This method involves 12 steps to quantify the risk of the decline or possible extinction of the species and takes current human activities, disturbances and the viability of the population into consideration for setting a conservation target. From the results, it was clear that more area is needed for the current population to survive beyond 50 years. Assuming the status quo, it will require 410 ha to maintain the population, whereas a 50% reduction in human-related activities, such as cultivation, harvesting and livestock grazing, will lower the required potential habitat to 203 ha and a conservation option, which allows for bark harvesting, will require 179 ha. Conservation implications: The results of this study will have conservation implication on management of viable species population within a nature reserve. It will require managers to take into consideration the reserve size in relation to potential habitats for the development of species under their management.
Publisher AOSIS Publishing
Contributor NRF
Date 2013-09-04
Type info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion — Plot methods
Format text/html application/octet-stream text/xml application/pdf application/pdf
Identifier 10.4102/koedoe.v55i1.1072
Source Koedoe; Vol 55, No 1 (2013); 5 pages 2071-0771 0075-6458
Language eng
Coverage Protected areas Chronological Density
Rights Copyright (c) 2013 Milingoni P. Tshisikhawe, Magaretha W. van Rooyen, Jerome Y. Gaugris