A geochemical investigation of the Lake Sibiya system, Northern Zululand

 

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dc.contributor.advisor Willis, James en_ZA
dc.contributor.advisor Fey, Martin V en_ZA
dc.contributor.author Whyte, Stewart Rodney en_ZA
dc.date.accessioned 2016-09-06T14:44:08Z
dc.date.available 2016-09-06T14:44:08Z
dc.date.issued 1999 en_ZA
dc.identifier.citation Whyte, S. 1999. A geochemical investigation of the Lake Sibiya system, Northern Zululand. University of Cape Town. en_ZA
dc.identifier.uri http://hdl.handle.net/11427/21695
dc.description.abstract Lake Sibaya (27°15'-21'25'S; 32°32'-32°44'E) is situated in the northern region of the Zululand coastal plain, and is remarkable in that it embodies a near-pristine· freshwater coastal lake preserving clear residual signs of its former estuarine origin. Despite the· fact that the lake constitutes perhaps the most intensively studied of all freshwater bodies in South Africa, little is known .of its geochemical character. The objective of this study was therefore to conduct an investigation of the waters and sediments of the lake system, which might then provide a chemical baseline against which the future environmental quality of the system could be gauged, and in terms of which the current functioning of the ecosystem can be better understood. In line with this rationale, water and sediment samples were collected from each of fourteen sampling sites located along three transects running, variously, S-N, SW-NE and W-E across peripheral arms of the lake. Waters in direct contact with the sediments were thoroughly agitated with the sediments and thereafter decanted for analysis. Since the lake is purported to be fed almost exclusively by groundwater flow, water samples were collected from three groundwater . . wells located north-west of the lake. The Department of Water Affairs (DW AF) databases for groundwater chemistry, and for lake level and chemistry over the period 1980 to 1998, were used to supplement this data, and to provide an indication of any medium-term parameter changes. A water sample was also· collected from the non-perennial Mseleni River, although the river is known to contribute minimally to the lake volume. The majority of laboratory analyses were conducted within the Department of Geological Sciences at the University of Cape Town, adhering to standard analytical methods wherever possible. en_ZA
dc.language.iso eng en_ZA
dc.subject.other Environmental Geochemistry en_ZA
dc.title A geochemical investigation of the Lake Sibiya system, Northern Zululand en_ZA
dc.type Master Thesis
uct.type.publication Research en_ZA
uct.type.resource Thesis en_ZA
dc.publisher.institution University of Cape Town
dc.publisher.faculty Faculty of Science en_ZA
dc.publisher.department Department of Geological Sciences en_ZA
dc.type.qualificationlevel Masters
dc.type.qualificationname MSc en_ZA
uct.type.filetype Text
uct.type.filetype Image
dc.identifier.apacitation Whyte, S. R. (1999). <i>A geochemical investigation of the Lake Sibiya system, Northern Zululand</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Geological Sciences. Retrieved from http://hdl.handle.net/11427/21695 en_ZA
dc.identifier.chicagocitation Whyte, Stewart Rodney. <i>"A geochemical investigation of the Lake Sibiya system, Northern Zululand."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Geological Sciences, 1999. http://hdl.handle.net/11427/21695 en_ZA
dc.identifier.vancouvercitation Whyte SR. A geochemical investigation of the Lake Sibiya system, Northern Zululand. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Geological Sciences, 1999 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/21695 en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Whyte, Stewart Rodney AB - Lake Sibaya (27°15'-21'25'S; 32°32'-32°44'E) is situated in the northern region of the Zululand coastal plain, and is remarkable in that it embodies a near-pristine· freshwater coastal lake preserving clear residual signs of its former estuarine origin. Despite the· fact that the lake constitutes perhaps the most intensively studied of all freshwater bodies in South Africa, little is known .of its geochemical character. The objective of this study was therefore to conduct an investigation of the waters and sediments of the lake system, which might then provide a chemical baseline against which the future environmental quality of the system could be gauged, and in terms of which the current functioning of the ecosystem can be better understood. In line with this rationale, water and sediment samples were collected from each of fourteen sampling sites located along three transects running, variously, S-N, SW-NE and W-E across peripheral arms of the lake. Waters in direct contact with the sediments were thoroughly agitated with the sediments and thereafter decanted for analysis. Since the lake is purported to be fed almost exclusively by groundwater flow, water samples were collected from three groundwater . . wells located north-west of the lake. The Department of Water Affairs (DW AF) databases for groundwater chemistry, and for lake level and chemistry over the period 1980 to 1998, were used to supplement this data, and to provide an indication of any medium-term parameter changes. A water sample was also· collected from the non-perennial Mseleni River, although the river is known to contribute minimally to the lake volume. The majority of laboratory analyses were conducted within the Department of Geological Sciences at the University of Cape Town, adhering to standard analytical methods wherever possible. DA - 1999 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1999 T1 - A geochemical investigation of the Lake Sibiya system, Northern Zululand TI - A geochemical investigation of the Lake Sibiya system, Northern Zululand UR - http://hdl.handle.net/11427/21695 ER - en_ZA


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