Author:Steyn, DJ; Toerien, DF; Visser, JHDate:Apr 1976The 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 effluentsRead more
Author:Chutter, FMDate:1971A 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
Author:Chutter, FMDate:1970Vaal 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
Author:Chutter, FMDate:1962In the course of an ecological survey of the macro-invertebrate fauna of the stream and rivers in the catchment of the Vaal Dam the author found a new species of Pseudagrion which is described here. The author’s colleagues, engaged in similar ...Read more