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Dissertations / Theses on the topic 'Tsitsa River (South Africa)'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 February 2022

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1

Huchzermeyer, Nicholaus Heinrich. "A baseline survey of channel geomorphology with particular reference to the effects of sediment characteristics on ecosystem health in the Tsitsa River, Eastern Cape, South Africa." Thesis, Rhodes University, 2018. http://hdl.handle.net/10962/58056.

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Fluvial systems are dynamic systems in which variables in a catchment and river channel affect the morphology of river reaches. South African rivers are increasingly being exposed to stresses from a combination of factors, one of the most prevalent being the impacts of damming rivers which result in varying downstream sediment fluxes and flow regimes. The sediment load combined with flow characteristics for respective river channels provides the physical habitat for aquatic ecosystems. The damming of the Tsitsa River, through the construction of the Ntabelanga Dam, will change the overall down

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2

Bannatyne, Laura Joan. "Developing a citizen technician based approach to suspended sediment monitoring in the Tsitsa River catchment, Eastern Cape, South Africa." Thesis, Rhodes University, 2018. http://hdl.handle.net/10962/62593.

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Suspended sediment (SS) in channels is spatiotemporally heterogeneous and, over the long term, is known to be moved predominantly by flood flows with return periods of ~1 - 1.5 years. Flood flows in the Tsitsa catchment (Eastern Cape Province, South Africa) are unpredictable, and display a wide range of discharges. Direct, flood-focused SS sampling at sub-catchment scale was required to provide a SS baseline against which to monitor the impact on SS of catchment rehabilitation interventions, to determine the relative contributions of sub-catchments to SS loads and yields at the site of the pro

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3

Akamagwuna, Frank Chukwuzuoke. "Taxonomic and trait-based responses of the orders Ephemeroptera, Plecoptera, Odonata, And Trichoptera (EPOT) to sediment stress in the Tsitsa River and its tributaries, Eastern Cape, South Africa." Thesis, Rhodes University, 2019. http://hdl.handle.net/10962/68082.

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Increased urbanization and industrialisation due to human population growth and associated high demand for food have led to widespread disturbances of freshwater ecosystems and associated resources. A widely recognised consequence of these disturbances is the excessive delivery of sediments into the freshwater ecosystems, which severely affects the functioning and integrity of these systems.. The major water quality impairment in the Tsitsa River and its tributaries, situated in the Mzimvubu catchment in the Eastern Cape Province of South Africa, is known to be excessive sediment input. In thi

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4

Pretorius, Simone Norah. "Sediment yield modelling in the upper Tsitsa Catchment, Eastern Cape, South Africa." Diss., University of Pretoria, 2016. http://hdl.handle.net/2263/60852.

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The Mzimvubu River is the largest river in South Africa without a dam. The Department of Water and Sanitation has identified the Tsitsa River Catchment on the Mzimvubu River as a potential site for a water resource development. The soils in the Tsitsa Catchment are prone to extreme soil erosion, in particular gullying. The sediment generated from these gullies and other forms of erosion will have a detrimental effect on any water resource development. Changing climate and land use will also affect soil erosion dynamics and thus need to be considered before any development is planned in the cat

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5

Hodgson, Danuta Lorina. "Demographic change in the Upper Tsitsa Catchment: the integration of census and land cover data for 2001 and 2011." Thesis, Rhodes University, 2018. http://hdl.handle.net/10962/57296.

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The purpose of this research was to determine if the integration of census and land cover data could provide evidence of spatial patterns and temporal change for the Upper Tsitsa Catchment. This thesis contributed to academic literature with regards to dasymetric mapping and provided a database for the Ntabelanga and Laleni Ecological Infrastructure Project. The study took place in the Upper Tsitsa Catchment which is located in the north-eastern region of the Eastern Cape and falls within the uMzimvubu Catchment. South Africa National Population Censuses for 2001 and 2011 and the National Land

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6

Zokufa, T. S. "Tolerance of selected riverine indigenous macroinvertebrates from the Sabie River (Mpumalanga), and Buffalo River (Eastern Cape) to complex saline kraft and textile effluents." Thesis, Rhodes University, 2001. http://hdl.handle.net/10962/d1005475.

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Whole Effluent Toxicity (WET) testing has been identified as one of the tools in the management of complex effluents in aquatic ecosystems. In South Africa, toxicity testing has not been required for regulatory purposes. Recently, the Department of Water Affairs and Forestry has adopted WET testing as a tool to evaluate the suitability of hazardous effluent for discharge into receiving environments. This has necessitated suitable procedures to be established for use in the South African situation. With the implementation of the new National Water Act (No 36 of 1998), industries have to comply

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7

Wurz, Sarah (Sarah Jacoba Deborah). "The middle stone age at Klasies River, South Africa." Thesis, Stellenbosch : Stellenbosch University, 2000. http://hdl.handle.net/10019.1/51998.

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Thesis (D Phil)--Stellenbosch University, 2000.<br>ENGLISH ABSTRACT: The Late Pleistocene, Middle Stone Age artefact sequence at the Klasies River main site, was studied to establish what information this held for inferences on the emergence of symbolic thought and communication. The approach adopted was to complement traditional typological analysis by a technological study of artefact production within the framework of the chafne opératoire. The results show that technology was aimed at producing preformed blanks. In the choice of materials, the technique and method of blank productio

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8

Scott, Penelope Jane. "Bioenergetics of Simuliidae (Diptera) larvae in the Buffalo River (Eastern Cape Province)." Thesis, Rhodes University, 1991. http://hdl.handle.net/10962/d1002041.

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Ingestion, assimilation and egestion rates of different sized filter-feeding blackfly larvae Simulium medusaeforme/hargreavesi (Diptera: Simuliidae) were determined. The effects of food type, food concentration and larval size on ingestion rates were tested. These bioenergetic parameters were used to obtain an indication of the importance of blackfly larvae in processing of particulate organic matter in the Buffalo River. Mean ingestion rates for S. medusaeforme/hargreavesi larvae feeding in the field ranged from 900 - 1600 μg/mg/h compared with those for larvae feeding in the laboratory on th

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9

Jones, Roy William. "Aquatic invasions of the Nseleni River system: causes, consequences and control." Thesis, Rhodes University, 2015. http://hdl.handle.net/10962/d1017806.

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Globalization has seen an unprecedented dispersal of exotic and alien species worldwide resulting in worldwide homogenization and sometimes extinction of indigenous or endemic taxa. When an exotic species becomes established in a new habitat the invasive organisms are capable of having an impact on indigenous community dynamics and the overall structure and function of ecosystems. Furthermore, the impact of invasion is determined by the geographical range, abundance and the per-capita or per-biomass effect of the invader. However, the success of the introduced organisms is reliant on their abi

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10

Bush, Richard Alan. "A hydrogeological assessment of the Uitenhage-Kuils River area, Cape Province, South Africa." Thesis, Rhodes University, 1987. http://hdl.handle.net/10962/d1001901.

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11

Ngwenya, Faith. "Water quality trends in the Eerste River, Western Cape, 1990 - 2005." Thesis, University of the Western Cape, 2006. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_2843_1189582559.

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<p>The Eerste River is a river system which has, over the years, been subjected to human interference. The purpose of this study was to investigatge temporal and spatial trends in the water quality of the Eerste River between 1990 and 2005. The study results revealed that the major trends in the water quality of the Eerste River are more spatial than temporal.</p>

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12

Du, Plessis A. J. E. "The response of the two interrelated river components, geomorphology and riparian vegetation, to interbasin water transfers in the Orange-Fish-Sundays River Interbasin Transfer Scheme." Thesis, Rhodes University, 2000. http://hdl.handle.net/10962/d1005526.

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The Skoenmakers River (located in the semi-arid Karoo region of the Eastern Cape) is being used as a transfer route for water transferred by the Orange-Fish-Sundays River Interbasin Transfer Scheme. The change in the hydrological regime of this once ephemeral stream to a much bigger perennial river led to dramatic changes to both the physical structure and riparian vegetation structure of the river system. These changes differ for each of the three river sections, the upper,middle and lower reaches. Qualitative, descriptive geomorphological data was gathered by means of field observations and

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13

Van, Pletzen Liezl. "The large mammal fauna from Klasies River." Thesis, Stellenbosch : Stellenbosch University, 2000. http://hdl.handle.net/10019.1/51991.

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Thesis (MPhil)--University of Stellenbosch, 2000.<br>ENGLISH ABSTRACT: The large mammal faunal sample, excavated since 1984 from the Late Pleistocene Klasies River main site, was studied. There are 27 species in eight genera represented. The bovids from the LBS member (110 000 years) and the Upper member (70 000 years) shows an increase in grazers relative to the fauna from the SAS member (100 000 years). This confirms previous research. The study of body part frequencies does not confirm the selective transport of the carcasses of larger bovids or that scavenging played an important r

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Lerotholi, Sekhonyana. "The role of salinity as an abiotic driver of ecological condition in a rural agricultural catchment." Thesis, Rhodes University, 2006. http://hdl.handle.net/10962/d1005528.

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The Kat River is an agricultural catchment that drains salt rich geology. Potential salinity impacts on ecological condition of the river were investigated. Monthly salt concentrations and flow discharges were monitored at ten sites along the Kat River below the Kat Dam. Monthly salt loads were computed to relate salinity to land use and ionic data used to assess the toxicity of major salts using the TIMS model. Concentration duration curves for sodium chloride were derived from flow concentration relationships, representing sodium chloride concentrations to which the aquatic ecosystem had bee

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15

Shuping, Likentso Sylvia. "Biomonitoring of metal contamination in the lower Diep River, Milnerton, Western Cape." Thesis, Cape Peninsula University of Technology, 2008. http://hdl.handle.net/20.500.11838/786.

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Thesis (MTech (Environmental Health))--Cape Peninsula University of Technology, 2008<br>The lower Diep River is a major freshwater ecosystem in the Western Cape. The river is surrounded by many possible sources of metal pollution such as an oil refinery, industries, a sewage treatment plant and a landfill site. However, metal contamination levels have not been monitored in this river. The aim of the study was therefore to monitor the degree of metal pollution in the lower Diep River, over a period of one year, and to investigate the use of the sedge Bolboschoenus maritimus, as biomonitor speci

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Van, Stormbroek Tim. "Bioaccumulation of metals in freshwater crabs (potamonautes perlatus) of the Lourens River, Western Cape, South Africa." Thesis, Cape Peninsula University of Technology, 2007. http://hdl.handle.net/20.500.11838/795.

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Thesis (MTech (Environmental Health))--Cape Peninsula University of Technology, 2007<br>Urban rivers are the most utilised and yet degraded rivers worldwide. The urban rivers of the Western Cape are no different. The Lourens River flows through the agricultural and urban areas of Somerset West in the Western Cape and as a result is subjected to a variety of pollution sources. In the upper reaches this river flows through two large farms where metal containing pesticides are used. Further downstream it passes through an urban area where a variety of pollution sources could contribute to the con

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17

Materechera, Fenji. "Towards integrated catchment management : challenges surrounding implementation in the Gamtoos River catchment." Thesis, Nelson Mandela Metropolitan University, 2012. http://hdl.handle.net/10948/d1018553.

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Water resource management has become a pertinent issue of global environmental concern in response to the conditions of a growing global population, increasing development and a limited freshwater supply. It is against the backdrop of such conditions that effective water resource management has gained popularity in seeking to ensure that the needs of the growing population will be met and secured for future generations. The notion of integrated water resource management (IWRM) is a perspective on water resource management that has evolved out of the global opinion that social and ecological sy

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18

Bordy, Emese M. "Sedimentology of the Karoo Supergroup in the Tuli Basin (Limpompo River area, South Africa)." Thesis, Rhodes University, 2001. http://hdl.handle.net/10962/d1005612.

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The sedimentary rocks of the Karoo Supergroup in the Tuli Basin (South Africa) consist of various terrigenous clastic and chemical deposits (parabreccias, conglo-breccias, conglomerates, sandstones, fine-grained sediments, calcretes and silc~etes). Four stratigraphic units were identified: the Basal, Middle and· Upper Units, and the CI~rens Formation. The palaeo-environmental reconstructions of the four stratigraphic units are based on evidence provided by primary sedimentary structures, palaeo-flow measurements, clast size/shape analysis, petrographic studies, palaeontological findings, boreh

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19

Mingo, Christopher Dominic. "Perceptions of gang violence in an Elsies River primary school in the Western Cape." Thesis, University of the Western Cape, 1999. http://etd.uwc.ac.za/index.php?module=etd&amp.

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20

Maake, Livhuwani. "Sources of suspended load in the upper Orange River, South Africa." Master's thesis, University of Cape Town, 2012. http://hdl.handle.net/11427/11974.

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Includes abstract.<br>Includes bibliographical references.<br>A lot of work has been done on the upper Orange River but little attention has been given to the source of its suspended sediment load. The source of the suspended load is important because it can provide insight into soil erosion, a major problem in South Africa and globally. In this study the composition of the suspended sediment load of upper Orange River tributaries is related to bed rock geology, topography, soils and land use. Orange River catchment bed rock includes sedimentary rocks of the Karoo Supergroup and flood basalts

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21

Saunders, James Woodward. "A method for imputing economic value to ecological goods and services provided by the Knysna River." Thesis, Rhodes University, 2008. http://hdl.handle.net/10962/d1003894.

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The purpose of this thesis was to develop a method by which economic value can be imputed from an economic activity to a non-market ecological function or service which contributes to that economic activity. The Knysna River in South Africa was chosen as the ecological function which supported three economic activities from which value was to be imputed; these were the Knysna Municipal Water Supply, Fish Production in the Knysna Estuary and Production of Indigenous Forest within the Knysna Catchment. Three underlying assumptions and two functional operations were required in order to implement

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22

Mostert, Rachel Elizabeth. "Phytosociological study of the Kruger National Park, south of the Sabie River, Mpumalanga Province, South Africa." Diss., University of Pretoria, 2007. http://hdl.handle.net/2263/23396.

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23

Esau, Mandy Anita. "Investigating channel change in relation to landuse change in the Klein Berg River, Tulbagh." Thesis, University of the Western Cape, 2005. http://etd.uwc.ac.za/index.php?module=etd&amp.

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The Klein Berg River catchment is intensely cultivated with orchards, vineyards and wheat, while also ensuring a water supply to the main urban center, Tulbagh, and the two conservation areas (Waterval and Groot Winterhoek). The primary objective of this thesis is to determine channel change over a long and short time period, and to relate these changes to landuse change within the catchment. <br /> <br /> Assessing stability of a selected reach within the catchment was done on a short term basis with the use of erosion pins and cross<br /> profiles, while aerial photographs of over 55 years (

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24

Mutingwende, Nhamo. "Identification of agricultural and industrial pollutants in the Kat River, Eastern Cape and their effect on agricultural products found along the river banks." Thesis, University of Fort Hare, 2015. http://hdl.handle.net/10353/d1020242.

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There is growing concern that commonly used Pharmaceuticals and Personal Care Products (PPCPs) and pesticides are entering and contaminating drinking water supplies. The use of targeted quantitation of PPCP has been well established but there is an emerging trend to also screen for and identify unexpected environmental pollutants. Chemicals like pesticides hormones and antibiotics are especially of interest because of proven endocrine disrupting effects and a possible development of bacterial resistance. Powerful screening methods are required to detect and quantify the presence of these compo

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25

Pietersen, Adrian. "A fluvial geomorphological study of river rehabilitation in the Kouga region, Eastern Cape." Thesis, Rhodes University, 2009. http://hdl.handle.net/10962/d1015228.

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The Kouga Riparian Rehabilitation Project (KRRP) is seen as a pilot rehabilitation project in the Kouga region that is heavily invaded with Acacia mearnsii along the riparian zones of many mountain streams. Clearing of these black wattles and re-planting of indigenous vegetation are imperative to rehabilitation efforts. In this context, two invaded catchments were identified - the Baviaans and the Heuningnes. The aim of this research is to characterise the effects that the woody alien invasive Acacia mearnsii has had on the river channel morphology of the Baviaans and Heuningnes Rivers. A desk

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Childs, Amber-Robyn. "Movement patterns of spotted grunter, Pomadasys commersonnii (Haemulidae), in a highly turbid South African estuary." Thesis, Rhodes University, 2006. http://hdl.handle.net/10962/d1005149.

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The principal objective of this thesis was to gain an understanding of the movement patterns of spotted grunter Pomadasys commersonnii, an estuarine-dependent fishery species, in the turbid, freshwater dominated Great Fish Estuary. Both manual and automated telemetry methods were used to monitor the movements of spotted grunter during two separate studies conducted in summer and spring 2003 and 2004. Acoustic transmitters were surgically implanted into twenty spotted grunter with lengths between 263 and 387 mm TL in the first study and twenty spotted grunter ranging between 362 and 698 mm TL i

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Nleya, Ndodana. "Institutional overlaps in water management in the Eerste River Catchment." Thesis, University of the Western Cape, 2005. http://etd.uwc.ac.za/index.php?module=etd&amp.

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In this minithesis I have investigated overlapping mandates as a source of management failure in water management in South Africa in general and Eerste River Catchment in particular. I analysed major legislation which deals with water management to find out how duties and responsibilities are apportioned in the various pieces of legislation. I also undertook an exercise of evaluating roles and responsibilities played by various organs of state in water management from national government, Provincial Government of the Western Cape through to local government, in this case the Municipality of St

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Itoba, Tombo Elie Fereche. "Land-use on water quality of the Bottelary River in Cape Town, Western Cape." Thesis, Cape Peninsula University of Technology, 2010. http://hdl.handle.net/20.500.11838/812.

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Thesis (MTech (Environmental Management))--Cape Peninsula University of Technology, 2010<br>Freshwater scarcity and river pollution has become a serious challenge for governments and scientists. Worldwide, governments have a responsibility to provide their populations with enough clean water for their domestic needs. Scientists will have an enormous task to find a way to purify polluted water, because of its vital role in human lives and an increasing demand for water consumption due to population growth. Although the water from the Bottelary River is used on a daily basis for farming act

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29

Birkholz, Sharon Alice. "Human-river relationships in the Kat River catchment and the implications for integrated water resource management (IWRM) : an exploraratory study." Thesis, Rhodes University, 2009. http://eprints.ru.ac.za/1581/.

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Neuweger, Diana Loraine Medical Sciences Faculty of Medicine UNSW. "Khoesan cranial variation :a study of the Matjes river rock shelter crania." Awarded by:University of New South Wales. Medical Sciences, 2007. http://handle.unsw.edu.au/1959.4/40434.

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The Matjes River Rock Shelter, in the Plettenberg Bay region of South Africa, has a large collection of archaeological cranial remains representing 8,000 years of occupation. Forty-three adult crania from the Matjes River collection are studied here, many which have not previously been published. These crania are compared through multivariate analysis with other dated crania from Fish Hoek, Cape Flats, Elands Bay, Port Elizabeth and Kenkelbosch, and with archaeological crania from five ecological biomes, Forest, Fynbos, Nama Karoo, Savanna, and Succulent Karoo biomes in southern Africa. Histor

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Blake, Justin David. "The ichthyofauna and piscivorous avifauna in a small temporarily open/closed Eastern Cape estuary, South Africa." Thesis, Rhodes University, 2010. http://hdl.handle.net/10962/d1005395.

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The spatial and temporal patterns in selected components of the ichthyofauna and piscivorous avifauna in the small temporarily open/closed Riet River Estuary located on the eastern seaboard of southern Africa was investigated monthly over the period August 2005 to July 2006. The ichthyofauna within the littoral zone of the estuary was sampled using a 5 m seine net (8 stations) while a 30 m seine net (4 stations) was employed to sample the fish in the channel. Bird counts were made along repeat transects along the length of the estuary. Total ichthyofaunal abundances and biomass ranged between

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Judd, Rachel Anne. "The coastal grasslands of the Eastern Cape west of the Kei River." Thesis, Rhodes University, 1999. http://hdl.handle.net/10962/d1003772.

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The grasslands of South Africa are the foundation of commercial and subsistence agriculture yet they are being degraded at an alanning rate. The coastal grasslands of the Eastern Cape are no exception and they suffer added pressure of coastal resort development because of their proximity to an attractive coastline. In order to determine the degree of conservation necessary for any area it is essential to know what species occur there in order to determine if protection from habitat destruction is required. Four aims were defined for this studv. The initial aim was a phytogeographical classific

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Nickall, Enéz Sarah-Leigh. "The feasibility of artificial recharge of the Bushmans River Mouth Aquifer." Thesis, Nelson Mandela Metropolitan University, 2008. http://hdl.handle.net/10948/704.

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The main aim of the project is to investigate the feasibility of artificial recharge of the Bushmans River Mouth Aquifer in the Eastern Cape. The suggested method of recharge is through natural infiltration through a series of wetlands in the back dune area. The proposed site was the Klipfontein Vlei which is located just north of the Bushmans River Mouth. Artificial recharge is defined as augmenting the natural movement of surface water into underground formations by some method of construction, the spreading of water, or by artificially changing natural conditions. A variety of methods have

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Haniff, Naadira. "Trace metal accumulation in urban sediments, Black River, Western Cape, South Africa." Master's thesis, University of Cape Town, 2003. http://hdl.handle.net/11427/4201.

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Bibliography: leaves 74-77.<br>The increase in urbanisation and the use of metal compounds and products domestically and in industry has resulted in the production of by-products and wastes, which needs to be evaluated in the urban environment. The discharge of some of these wastes into urban rivers should be evaluated to determine the potential effects, for example, toxicity and mobility. The effects may, in part, be determined by the chemical states in which these wastes manifest themselves, and by the chemical associations they have.

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Madlala, Tebogo Eugene. "Determination of groundwater-surface water interaction, upper Berg River catchment, South Africa." University of the Western Cape, 2015. http://hdl.handle.net/11394/5331.

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>Magister Scientiae - MSc<br>The present study investigated the application of a multi-method approach to determine groundwater-surface water (GW-SW) interactions to quantify and characterize the quality of water resources in a fractured rock aquifer system in upper catchment of the Berg River (G10A). Demonstrating methods for improved understanding of groundwater and surface water interactions is important for informing development of strategies that ensure effective utilization and management of water resources. Applying a single method to inform innovative strategies for water resources has

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Foster, Michael Benedict John. "Geological control of aquifer properties of the Chuniespoort Group in the Klip River Valley and Natalspruit Basin, Transvaal." Thesis, Rhodes University, 1988. http://hdl.handle.net/10962/d1013338.

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The aquifer of the study area occupies an escarpment and low lying limestone plain, and exhibits a Vaal River type karst. The four dolomitic formations present fall into two distinct aquifer forming types; chert poor units and chert rich units. The chert poor units of the Oaktree and Lyttelton Formations were deposited in a subtidal environment and were probably dolomi tised in a migrating schizohaline environment during basin subsidence and shoreline trangression. The chert rich units of the Monte Christo and Eccles Formations were deposited in the shallow subtidal to supratidal zones and the

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Paulse, Arnelia Natalie. "Investigation into the bacterial pollution in three Western Cape rivers, South Africa and the application of bioremediation strategies as clean-up technology." Thesis, [S.l. : s.n.], 2008. http://dk.cput.ac.za/cgi/viewcontent.cgi?article=1026&context=td_cput.

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Tseane, Lisebo. "Service quality in sport tourism : the case of the Berg River canoe marathon." Thesis, Cape Peninsula University of Technology, 2006. http://hdl.handle.net/20.500.11838/1608.

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Thesis (MTech (Tourism and Hospitality Management))--Cape Peninsula University of Technology, Cape Town, 2006<br>The concept of service quality within sport tourism is important and plays a major role in differentiating each sport tourism product from its competitors. The purpose of this study was to evaluate the level of service quality within South African sport tourism and in the tourism industry in general, by focusing on a specific case study, the Berg River Canoe Marathon. The study discussed the importance of service quality within sport tourism, while the methods and instruments applic

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Döckel, Willemien. "Re-investigation of the Matjes River rock shelter." Thesis, Stellenbosch : Stellenbosch University, 1998. http://hdl.handle.net/10019.1/55964.

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Thesis (MA) --Stellenbosch University, 1998.<br>ENGLISH ABSTRACT: The rehabilitation of the Matjes River rock shelter on the eastern side of Plettenberg Bay, South Africa, provided an opportunity to obtain new information on the deposits. A metre wide column was excavated through six metres of shell-rich deposits at the junction of two cuttings made in the 1920s and 1950s and known as the "Apex". A small section was cut into the upper layers in the entrance area. A suite of radiocarbon dates shows the deposits to be between 6300 and 10 600 years old with a possible hiatus in deposition

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Oosthuizen, Susan Anita. "Establishing a greenbelt policy for the conservation and development of the Crocodile River in Nelspruit." Thesis, Stellenbosch : Stellenbosch University, 2002. http://hdl.handle.net/10019.1/52827.

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Thesis (MA)--Stellenbosch University, 2002.<br>ENGLISH ABSTRACT: The Crocodile River Greenbelt area, located along the northern edge of Nelspruit, is a unique ecological system that must be protected from encroaching urbanization and invasive alien vegetation. The writer has attempted through policy intervention to achieve this goal. A policy for a greenbelt was compiled to allow for limited development along the Crocodile River Greenbelt area. The first step was to compile a policy for the Crocodile River Greenbelt area, and to contextualise the legislative requirements to compile such a

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Newman, Natalie Nicolette. "The impact of altered river structure on the function of selected urban Cape Town rivers." Thesis, Cape Peninsula University of Technology, 2010. http://hdl.handle.net/20.500.11838/2029.

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Thesis (MTech (Nature Conservation))--Cape Peninsula University of Technology, 2010.<br>Many urban rivers are heavily engineered and no longer function naturally. The City of Cape Town has designed and implemented many stormwater and river management projects. Very little monitoring has occurred as to whether these engineering projects and remediation measures, have had a positive effect on our urban river ecosystem function. The study investigated the influence of specific engineering interventions such as the placement or rocks in stream to create weirs, gabion lining of stream channel

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Odume, Oghenekaro Nelson. "An evaluation of macroinvertebrate-based biomonitoring and ecotoxicological assessments of deteriorating environmental water quality in the Swartkops River, South Africa." Thesis, Rhodes University, 2014. http://hdl.handle.net/10962/d1013156.

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Freshwater resources are increasingly subject to pollution because of escalating human population growth, accompanied by urbanisation, industrialisation, and the increased demand for food. Consequently, freshwater quality, and aquatic ecosystem structure and function have been severely impaired. The Swartkops River, which drains an urbanised and industrialised catchment in the Eastern Cape of South Africa, is no exception. An integrated environmental water quality (EWQ) approach is needed to measure the impacts of deteriorating water quality on its aquatic ecosystem structure and function to s

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Raath, Gideon. "The impact of high rainfall and flood events on Eucalyptus camaldulensis distribution along the central Breede River." Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/97021.

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Thesis (MSc)--Stellenbosch University, 2015.<br>ENGLISH ABSTRACT: Eucalyptus camaldulensis Dehnh., or River Red Gum, is a commercially valuable yet recognised invasive alien plant (IAP) of riparian zones throughout South Africa. The invasive potential of E. camaldulensis is widely recognised, with specific regulations aimed at the management of E. camaldulensis. E. camaldulensis is known to use large amounts of water, reduce biodiversity, change river morphology and impact hydrological regimes of rivers. In the native range throughout Australia, E. camaldulensis displays a distinct relati

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Motteux, Nicole. "Evaluating people-environment relationships : developing appropriate research methodologies for sustainable management and rehabilitation of riverine areas by communities in the Kat River Valley, Eastern Cape Province, South Africa." Thesis, Rhodes University, 2003. http://hdl.handle.net/10962/d1005503.

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International evidence clearly indicates that water shortages and the enhanced value attached to water and aquatic ecosystems are key concerns faced by many countries. International experience, since the mid-1980s, has emphasised the importance of addressing political, social, environmental and economic issues through active stakeholder participation in riverine and water resource management. These trends and issues are relevant to South Africa, where integrated water resource management (IWRM) is now a cornerstone of water resource policy and the National Water Act (NWA). Apartheid excluded c

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Ismail, Shameelah. "Stakeholders’ perceptions of the impacts of an outdoor and wine festival in the Breede Valley of the Western Cape Province." Thesis, Cape Peninsula University of Technology, 2015. http://hdl.handle.net/20.500.11838/2115.

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Thesis (MTech (Tourism and Hospitality Management))--Cape Peninsula University of Technology, 2015.<br>The Breede Valley region is located in the Cape Winelands District near Cape Town and has been identified as a wine region with vast diversity and distinctiveness. The lack of research in the field of wine and events in the area gave rise to this study. The event industry in this region is relatively unexploited but in recent years has been revealed to be a major catalyst for tourism and economic development. However, for events to act as a catalyst for tourism and economic development, it is

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Beyers, Gregory John. "An experimental study of the effect of Acacia mearnsii (black wattle trees) on streamflow in the Sand River, Eastern Cape." Thesis, Rhodes University, 1999. http://hdl.handle.net/10962/d1005507.

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This thesis explores the effect of Acacia mearnsii on streamflow in the Eastern Cape. There is a need for data on the localised effects of removing alien trees from the riparian zones within the Fynbos Biome. Fynbos catchments throughout the Western and Eastern Cape yield large quantities of good quality water which is an essential resource in the region. To convince local land owners to manage their riparian zones, small scale experimental results will prove invaluable to assure them of the immediate advantages for themselves and for downstream water users. Three permanent weirs were built 50

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McGregor, Gillian Kathleen. "The geomorphological impacts of impoundments, with particular reference to tributary bar development on the Keiskamma River, Eastern Cape." Thesis, Rhodes University, 2000. http://hdl.handle.net/10962/d1005510.

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The primary aim of this research was to develop and test a conceptual model of the geomorphological impacts of river regulation, based on a review of relevant international literature. It was motivated by the fact that there is very little local information on the topic, and it was intended that the model might provide a starting point for assessing the impact of impoundments on South African river systems. At present most research in South Africa on the impact of impoundments is undertaken from an ecological perspective. In order to manage our water resources sustainably it is necessary to ha

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Nakwafila, Albertina Nuusiku. "Salinisation source(s) and mechanism(s) in shallow alluvial aquifers along the Buffels River, Northern Cape Province, South Africa." Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/96826.

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Thesis (MSc)--Stellenbosch University, 2015.<br>ENGLISH ABSTRACT: Several areas in Namaqualand are affected by elevated levels of salinity; including the shallow alluvial aquifers along the Buffels River catchment. The chemistry of rainwater that recharges these aquifers has low salt-loads, but the groundwater system is very saline. The shallow alluvial aquifers are an important source of water for several communal areas along the river both for domestic and agricultural purposes. Groundwater is also used for the copper and diamond mining activities along the river. Prior to this study, the so

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Zuma, Bongumusa Msizi. "Microbial ecology of the Buffalo River in response to water quality changes." Thesis, Rhodes University, 2010. http://hdl.handle.net/10962/d1006182.

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South Africa’s freshwater quality and quantity is declining and consequently impacting on the ecological health of these ecosystems, due to increased agricultural, urban and industrial developments. The River Health Programme (RHP) was designed for monitoring and assessing the ecological health of freshwater ecosystems in South Africa, in order to effectively manage these aquatic resources. The RHP utilises biological indicators such as in-stream biota as a structured and sensitive tool for assessing ecosystem health. Although the RHP has been widely implemented across South Africa, no attempt

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Hayes, Johan Barnard. "Assessment of fish as bio-indicators of river health in rivers of the southwestern Cape." Thesis, Stellenbosch : Stellenbosch University, 2002. http://hdl.handle.net/10019.1/52704.

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Thesis (MSc)--University of Stellenbosch, 2002.<br>ENGLISH ABSTRACT: In this study, the Fish Assemblage Integrity Index (FAll) was applied on three rivers within the southwestern Cape. This index uses fish as indicators of biological aquatic integrity and is based on indigenous species expected to be present in biological fish habitats. Fish integrity classes were calculated for each of the sites in the three rivers studied. Sites 2 and 4 within the Lourens River were rated as Class C, whereas sites 1 and 3 were rated as Class F and Class D respectively. Sites 1, 2 and 4 within the Palmi

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