Original Research
Guiding conservation efforts in the Hantam–Tanqua–Roggeveld (South Africa) using diversity parameters
Submitted: 10 August 2010 | Published: 15 September 2011
About the author(s)
Helga van der Merwe, Department of Plant Science, University of Pretoria, South AfricaMargaretha W. van Rooyen, Department of Plant Science, University of Pretoria, South Africa
Abstract
A principal coordinate analysis of species richness data at seven plot sizes produced three distinct clusters. One cluster represented the Tanqua Karoo, with low species richness, evenness, and Shannon and Simpson indices. Another cluster represented mostly Mountain Renosterveld vegetation, which was characterised by a high species richness, evenness, and Shannon and Simpson indices. The third cluster was formed by the remaining Mountain Renosterveld plots as well as the Winter Rainfall Karoo plots.
The high species richness values found in the various vegetation units can add valuable information to the conservation planning arena by providing information on biodiversity parameters and their spatial distribution. This information can assist with conservation efforts in the Hantam, Tanqua and Roggeveld areas.
Conservation implications: Conservation and development of the Hantam–Tanqua– Roggeveld subregion is hampered by a lack of information on floristic diversity. The results of the current study indicated areas of low diversity and contrasting areas of high diversity. These data can be used to guide effective conservation and management of the floristic diversity.
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Crossref Citations
1. Patterns of plant species richness and growth form diversity in critical habitats of the Nama-Karoo Biome, South Africa
H. Petersen, S.L. Jack, M.T. Hoffman, S.W. Todd
South African Journal of Botany vol: 135 first page: 201 year: 2020
doi: 10.1016/j.sajb.2020.08.028