Original Research

Cape Hangklip area. I. The application of association-analysis. homogeneity functions and Braun-Blanquet techniques in the description of south-western Cape vegetation

C. Boucher
Bothalia | Vol 12, No 2 | a1420 | DOI: https://doi.org/10.4102/abc.v12i2.1420 | © 1977 C. Boucher | This work is licensed under CC Attribution 4.0
Submitted: 11 November 1977 | Published: 11 November 1977

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C. Boucher, Botanical Research Unit, South Africa

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Abstract

Releve data were collected in two phases from, respectively 150 and 100 sampling points distributed by stratified random means through almost 24 000 ha of vegetation. Association-analysis, Braun-Blanquet and homogeneity function methods were used to treat the data. Only the "normal” association-analysis method was applied. Three sorting techniques for tabulating the data were tested and were compared with a fourth method. Homogeneity functions were used to construct a dendrogram and to determine the degree of similarity between individual releves and groups of releves. After compaiison of the methods, it was concluded that the Braun-Blanquet method is consistently more efficient and more exact, even in the floristically rich vegetation of the south-western Cape Province of South Africa.


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