The Invertebrate Fauna and Biotic Index Value of Water Quality of the Great Berg River, Western Cape

Coetzer, A.

doi:10.1080/03779688.1978.9633142

Cited by 2 publications

(1 citation statement)

References 3 publications

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“…The Eerste River rises in the most southerly mainland mountains with permanent running water, and is separated from the isolated Table Mountain massif by the Cape Flats, an area of sand and sluggish, alkaline streams. It appears to be richer in species than the streams rising on Table Mountain (Harrison 1972) but poorer than the nearby Berg River (Harrison & Elsworth 1958, Coetzer 1978 and other rivers of the western Cape (Harrison & Agnew 1962).…”

Section: Composition Of the Faunamentioning

confidence: 97%

Abundance, Biomass and Diversity of Benthic Macro-Invertebrates in a Western Cape River, South Africa

King¹

1983

Transactions of the Royal Society of South Africa

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The Eerste River is situated in the south-western Cape Province, South Africa. Its upper reaches have a stony substratum, and can be divided into'three physicaUbiotic zones: the Mountain Stream, Upper River and Lower River zones. Investigations of the abundance, biomass, species diversity and species composition of the benthic macro-invertebrates in the three zones were carried out in 1975/76. Spatial and temporal changes in these factors can be correlated with changes in the physico-chemical quality of the water. Abundance and biomass generally increased downstream, but were low below a dam construction site, because of the blanketing effects of silt on the substratum. Seasonal changes in abundance and biomass differed in the three zones, but always included a peak in spring. The highest values of both were in the Lower River in summer, reflecting the build-up of organic pollutants there during times of low flow. Diversity of the Ephemeroptera, which was felt to be representative of a change in diversity of the fauna as a whole, generally decreased downstream, with a major drop at the town of Stellenbosch, and another at a sewage-farm outfall. A misleading increase in diversity occurred, however, in the silt-laden waters below the dam site, due to the fleeting occurrence of individuals of several different species. Composition of the fauna was typical of local rivers with mountain sources.

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Section: Composition Of the Faunamentioning

confidence: 97%

Abundance, Biomass and Diversity of Benthic Macro-Invertebrates in a Western Cape River, South Africa

King¹

1983

Transactions of the Royal Society of South Africa

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Spatial and temporal changes in the riverine macroinvertebrate community composition in the Berg River, and the expected response following the development of the Berg River Dam

Snaddon¹

2009

Transactions of the Royal Society of South Africa

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The Invertebrate Fauna and Biotic Index Value of Water Quality of the Great Berg River, Western Cape

Cited by 2 publications

References 3 publications

Abundance, Biomass and Diversity of Benthic Macro-Invertebrates in a Western Cape River, South Africa

Abundance, Biomass and Diversity of Benthic Macro-Invertebrates in a Western Cape River, South Africa

Spatial and temporal changes in the riverine macroinvertebrate community composition in the Berg River, and the expected response following the development of the Berg River Dam

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