Original Research

The phytosociology of the Vermaaks, Marnewicks and Buffelsklip valleys of the Kammanassie Nature Reserve, Western Cape

G. Cleaver, L.R. Brown, G.J. Bredenkamp
Koedoe | Vol 48, No 1 | a162 | DOI: https://doi.org/10.4102/koedoe.v48i1.162 | © 2005 G. Cleaver, L.R. Brown, G.J. Bredenkamp | This work is licensed under CC Attribution 4.0
Submitted: 30 June 2005 | Published: 30 June 2005

About the author(s)

G. Cleaver, UNISA, South Africa
L.R. Brown, UNISA, South Africa
G.J. Bredenkamp, University of Pretoria, South Africa


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Abstract

Long-term conservation ecosystems require a broader understanding of the ecological processes involved. Because ecosystems react differently to different management practices, it is important that a description and classification of the vegetation of an area are completed. A vegetation survey of the valley areas of the Kammanassie Nature Reserve was undertaken as part of a larger research project to assess the environmental impacts of large-scale groundwater abstraction from Table Mountain Group aquifers on ecosystems in the reserve. From a TWFNSPAN classification, refined by Braun-Blanquet procedures, 21 plant communities, which can be grouped into 13 major groups, were identified. A classification and description of these communities, as well as a vegetation map of the different areas are presented. Associated gradients in habitat w ere identified by using an ordination algorithm (DECORANA). The diagnostic species as well as the prominent and less conspicuous species of the tree, shrub, forb and grass strata are outlined. The study also resulted in a total number of 481 species being identified and the discovery of a new Erica species. These vegetation surveys and descriptions provide baseline information for management purposes and that allows monitoring as well as similar surveys to be conducted in future.

Keywords

Braun-Blanquet; plant communities; TWINSPAN; vegetation classification.

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