Author:Breen, CMDate:Dec 1983Lake Midmar is a shallow turbulent lake subject to periodic draw-down. These conditions create considerable instability in the water column and greatly influence the structure and functioing of the system. Analysis of how the lake may be ...Read more
Author:Walmsley, MRD (ed); Butty, M (ed)Date:09 Dec 2010In 1972 Department of water affairs and the bureau of standards expressed concern at eutrophication as a water quality problem and requested the water research commission(WRC) to initiate research on its causes. consequences and controls. In ...Read more
Author:Allanson, BR; Whitfield, AKDate:Dec 1983This report is the summary of a larger two-volumed work originally presented to the Coastal Lakes Working Group in 1981. The floodplain is in essence a series of small, shallow lakes, running in an east-west direction between the village of ...Read more
Author:Sampson, LR; Ventura, DFC; Kalombo, DKDate:04 Jun 2009Several problems with the linear shrinkage test specified in Method A4 of the THM 1 1979 were addressed as part of this investigation in an effort to improve the alleged poor reproducibility of the test and justify its reintroduction into THM ...Read more
Author:Oberholzer, MFDate:1972A thermistor type sensing element is often preferred to more conventional temperature sensitive devices, such as accessibility, robustness and temperature range are taken into account.Read more
Author:Delport, JPDate:May 2007This dissertation describes the experiments performed and the techniques developed in order to identify network nodes and the connections between these nodes. The product of the investigation was the formulation of an algorithm and heuristic ...Read more
Author:Macdonald, IAW; Crawford, RJMDate:1988This volume presents the proceedings of a conference held to review the state of knowledge on long-term data series from southern African ecosystems. Three chapters relate to marine environments: those of the West Coast shelf, the South-East ...Read more
Author:Estuarine and Coastal Research Unit, ECRUDate:Oct 1982This report provides information about Lourens River. The Lourens River was known in the late 17th century as the Tweederivier, since it was the second river crossed on the journey from the Cape Peninsula to the Hottentots Holland Mountains. ...Read more
Author:Moodie, BDate:1975One hundred and twenty-nine products prepared by 15 collieries in Natal were petrographically analyzed. The collieries producing the coal can conveniently be divided into six areas, and the coals belonging to area have similar petrographic ...Read more
Author:Heeg, J; Breen, CMDate:Jun 1982This report comprises a synthesis of contributions to a workshop on Man and the Pongolo held at the University of Natal, Pietermaritzburg in February 1978. Studies on the ecology of the Pongolo floodplain, encompassing its fauna, flora and ...Read more
Author:Kunstmann, FH; Van Rensburg, MJJDate:1967The presence of manganese in South African coals is well known, but no figures on the manganese content of these coals or their ashes were hitherto available. In this paper the manganese content of 33 South African coals is reported, and some ...Read more
Author:Butterworth, DS; Punt, AE; Borchers, DL; Pugh, JB; Hughes, GSDate:1989This manual contains an expanded version of material presented at a Linefish Population Dynamics Workshop held in Cape Town in February 1987. First the statistical procedures for fitting curves to data are discussed. The standard single-species ...Read more
Author:Butterworth, DS; Punt, AE; Borchers, DL; Pugh, JB; Hughes, GSDate:1989This manual contains an expanded version of material presented at a linefish population dynamics workshop held in Cape Town in February 1987. First the statistical procedures for fitting curves to data are discussed. The standard single-recapture ...Read more
Author:Watling, RJDate:Jul 1981Methods used in the South African Marine Pollution Monitoring Programme for the analysis of toxic metals, nutrients, oxygen absorbed, chlorophyll, pesticides and bacteria are described. Sample types include biological material, sediments, ...Read more
Author:SANCORDate:Apr 1979This report outlines the framework for a marine line fish programme under the aegis of the South African National Committee for Oceanographic Research (SANCOR). An attempt is made to assess the state of knowledge about South African marine ...Read more
Author:Wallace, JH; Van Der Elst, RPDate:May 1983This document is a synthesis of the current state of knowledge and of research requirements for 84 of the most important of South Africa's angling fish, and has been assembled from individual contributions which were presented at a workshop ...Read more
Author:Moldan, AGS; Ridder, JHDate:1989The debate over the degradation of coastal waters by sewage, oil and industrial wastes, continues. To provide a wide-ranging but concise examination of this topic, the Foundation for Research Development of the CSIR organized a one-day public ...Read more