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Browsing by Subject "Diatoms"

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Account of the littoral diatoms from Langebaan, Saldanha bay, Cape province, South Africa

Author: Giffen, MH Date: 1975 The diatom flora from several stations on the eastern shore of Saldanha Bay (South Africa) has been studied. Saldanha bay is situated on the western coast of South Africa 110Km north of Cape Town. Read more
Amphora coeffeaeformis (Agardh) Kutzing: a revision of the species under light and electron microscopy.

Author: Archibald, REM ; Schoeman, FR Date: 1984 Amphora coeffeaeformis (Agardh) Kutzing is frequently found in brackish water. However, different concepts of this species found in the literature lead to confusion with respect to its true identity. In this study Agardh’s type material from ... Read more
Collection of Hirudinea submitted by F.M. Chutter (national institute for water research, Pretoria) and the geographical distribution of Hirudinea in South Africa

Author: Sciacchitano, I Date: Aug 1963 The leeches collected from the Vaal Barrage and from the streams and rivers of the Vaal dam Catchment Barrage by F.andM. from Chutter, which I have just studied, constitute a collection of 121 specimens. I sincerely thank Mr F. M. Chutter for ... Read more
Contribution to the Diatom flora of Southern Africa. II. Diatoms from the Hog's Back Region of the Amatola Mountains, Eastern Cape Province, South Africa

Author: Malcolm, HG Date: 1984 This paper deals with the diatoms flora of the Hog's Back region of the Amatola Mountains in the Eastern Cape Province, South Africa. These mountains form part of the Great winterberg Range which constitutes a portion of the escarpment of the ... Read more
Contributions of the Diatom flora of South Africa

Author: Giffen, MH Date: 1966 The diatom flora of the marine littoral of South African coatal river estuaries is very superficially known. In a previous contribution (Giffen 1963) the author dealt with the diatoms of the Eastern Cape Province estuaries namely the Gulu ... Read more
Diatom flora of Southern Africa

Author: Schoeman, FR ; Archibald, REM Date: Sep 1977 The authors in their various issues aim at describing twenty species in each issue. Failure to achieve this aim is due, partly to the short intervals between the issue dates, but more specifically to all the work involved in ensuring the ... Read more
Diatoms from the Vaal dam catchment area Transvaal, South Africa

Author: Archibald, REM Date: 1971 The Vaal Dam is of great importance to South Africa as it ensures a good supply of water to the Witwatersrand complex, South Africans most important industrial and mining centre, and the problem of pollution and protection of the waters flowing ... Read more
Diatoms of the jukskei-crocodile river system (transvaal, republic of South Africa): a preliminary check list

Author: Schoeman, FR Date: 1982 Durring the year 1972 to 1975 samples of benthic algae were collected from 22 selected river stations in the Juskei-Crocodile river system. Some 250 diatoms taxa were identified from these samples Read more
Diatoms of the marine littoral of Steenberg's cove in St. Helena Bay, Cape province, South Africa

Author: Malcolm, HG Date: 1973 In a series of previous investigation of the marine littoral of the South African coast, the author has made observations at the various localities along the shores of the Eastern Cape Province. All these stations are situated along the shores ... Read more
Digitisation of the South African diatom collection

Author: Van der Molen, J Date: Jun 2008 This presentation gives the background of the Diatom collection as well as an overview of the collection content. The two phases of the digitisation process are described in detail Read more
Eutrophication levels of some South African impoundments. IV. Vaal Dam

Author: Steyn, DJ ; Toerien, DF ; Visser, JH Date: Apr 1976 The purpose of this study was to determine the present eutrophication levels of the Vaal dam, to determine how it might be affected by increased discharged of secondary treated sewage effluents Read more
Further account of the marine littoral diatoms of the Saldanha Bay Lagoon, Cape province, South Africa

Author: Giffen, MH Date: 1976 This paper deals with the continuation of an investigation of the marine littoral diatom flora of the Saldanha bay Lagoon, situated on the west coast of South Africa. Read more
Further contribution to the diatom flora of sewage enriched waters in southern Africa

Author: Schoeman, FR Date: 1972 The systematics and autecology of the diatoms observed in an algal sample from a maturation pond of the Walvis Bay (south west African coast) sewage works are discussed. Fourteen diatoms species are recorded. A new specie, Amphora subacutiuscula, ... Read more
Hydrobiological studies in the catchment of Vaal dam, South Africa part 3. Notes on the Cladocera and Copepoda of stones-in-current, marginal vegetation and stony backwater biotopes

Author: Chutter, FM Date: 1971 A general description of the study area be found in part 1(Chutter, 1970), where the fauna other than Cladocera and Copera of store-in-current, marginal vegetation and story backwater has been described. It was found that the streams and ... Read more
Hydrobiological studies in the catchment of Vaal dam, South Africa. Part 1. River Zonation and the Benthic Fauna

Author: Chutter, FM Date: 1970 Vaal Dam is situated on the elevated plateau which forms the interior of South Africa and is a little less than 1500 m above the level. The source of the most of the streams and rivers flowing into the dam are about 2000 m above sea level, ... Read more
Limnological studies on the Pretoria Salt Pan, a hypersaline maar lake

Author: Ashton, PJ ; Schoeman, FR Date: 1983 The Pretoria Salt pan is shallow and alkaline with pronounced mesothermy at a depth of between 0.55 and 0.7 metres. Secchi disc transparencies ranged from 7 to 19 cm. Endorheic or closed drainage basins are widely distributed in many climate ... Read more
Management of autotrophic mass cultures of micro-algae

Author: Toerien, DF ; Grobbelaar, JU ; Walmsley, RD Date: 1987 Interest in the mass cultivation of micro-algae as feed and foodstuff has existed since the turn of the century (Robinson and Toerien, 1962). Experiments using algae in photosynthetic research (Warburg, 1919) also led to an appreciation of ... Read more
Marine littoral diatoms from the Gordon’s bay region of False Bay, Cape Province, South Africa

Author: Giffen, MH Date: 1971 The Gordon’s Bay region occupies the North western corner of false Bay, a large rectangular bay, bounded on the west by the Cape Peninsula ending at Cape Point, on the east by the precipitous slope of the Steenbras Mountains ending at the ... Read more
New and Interesting Cyanophytes from the Kowie river system in the Eastern Cape Province (South Africa) II.

Author: Archibald, CGM Date: 1967 The thallus is not gelatinous but is diffuse and pale grey-green in colour. The trichomes are without a sheath and are straight or curved, often closely entangled and rarely coiled. The dull blue- green trichomes are markedly constricted at ... Read more
New and interesting marine and littoral diatoms from sea point, near Cape Town, South Africa

Author: Giffen, MH Date: 1970 During a visit to Cape town in December 1967, the opportunity was sized to visit the sea shore at Sea point, a suburb and seaside resort near Cape Town, For the purpose of obtaining fertile class material of Laminaria, Ecklonea and polysiphonia ... Read more

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