Original Research

Threatened Limestone Fynbos plant communities of Andrew’s Field and Tsaba-Tsaba Nature Reserve, Western Cape

M. M. Zietsman, G. J. Bredenkamp
Bothalia | Vol 37, No 1 | a306 | DOI: https://doi.org/10.4102/abc.v37i1.306 | © 2007 M. M. Zietsman, G. J. Bredenkamp | This work is licensed under CC Attribution 4.0
Submitted: 15 August 2007 | Published: 18 August 2007

About the author(s)

M. M. Zietsman, African Vegetation and Plant Diversity Research Centre, Department of Botany, University of Pretoria, South Africa
G. J. Bredenkamp, African Vegetation and Plant Diversity Research Centre, Department of Botany, University of Pretoria, South Africa

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Abstract

The vegetation of inland plains and hills of the Andrew’s Field and Tsaba-Tsaba Nature Reserve, Bredasdorp District, Western Cape was classified using TWINSPAN and Braun-Blanquet procedures. The resulting four plant communities and nine subcommunities were described and interpreted ecologically. The vegetation was sampled using 97 randomly stratified plots. The floristic composition, Braun-Blanquet cover-abundance of each species, and various environmental variables were recorded in each sample plot. The relationship between the vegetation units and the associated environmental gradients was confirmed by ordination, using the DECORANA computer program, applied to the floristic data set. The conservation priority of each vegetation unit was determined by taking the occurrence of Red Data List species, limestone endemic species and Cape Floristic Region endemic species into consideration. TTie distribution of the plant communities can mainly be ascribed to differences in the clay/sand content of the soil and the degree of exposure of the vegetation to the dominating winds (southeastern and northwestern) of the area.


Keywords

conservation area; endemic plants; Limestone Fynbos; phytosociology; plant communities; TWINSPAN; Western Cape

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