Original Research

A survey of the coastal vegetation near Port Alfred, eastern Cape

R. A. Lubke
Bothalia | Vol 14, No 3/4 | a1234 | DOI: https://doi.org/10.4102/abc.v14i3/4.1234 | © 1983 R. A. Lubke | This work is licensed under CC Attribution 4.0
Submitted: 04 November 1983 | Published: 06 November 1983

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R. A. Lubke, Department of Plant Sciences, Rhodes University, South Africa

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Abstract

Detailed information on the colonization and succession of the sand dunes, dune slacks and rocky outcrops along the coast between the Riet and Kleinemonde Rivers is provided. The main reasons for the paucity of plants on the vast dune system are the movement of sand by wind and the inconsistent rainfall. Zonation of species along a dune transect is not particularly marked although a greater diversity of species is found in the dune slacks where an increased amount of seepage moisture occurs. Reclamation practices in blow-out areas have resulted in a pioneer cover of indigenous plants which should provide dense coastal scrub if the introduced Acacia cyclops is kept under control. Establishment of plants on the rocky promontories has occurred over a very long time and well developed communities and soils have formed. Salt spray and high winds are major controlling factors in the zonation of species along a gradient in this area.


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