Academic literature on the topic 'Hennops River Valley (South Africa)'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Hennops River Valley (South Africa).'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Journal articles on the topic "Hennops River Valley (South Africa)"
1
Hoffman, M. T., and R. M. Cowling. "Desertification in the lower Sundays River Valley, South Africa." Journal of Arid Environments 19, no. 1 (1990): 105–18. http://dx.doi.org/10.1016/s0140-1963(18)30834-6.
Full text
2
Kirchner, J., J. H. Moolman, H. M. du Plessis, and A. G. Reynders. "Causes and Management of Salinity in the Breede River Valley, South Africa." Hydrogeology Journal 5, no. 1 (1997): 98–108. http://dx.doi.org/10.1007/s100400050126.
Full text
3
Cash, Corrine, and Larry Swatuk. "Integrated Development Planning in South Africa: Lessons from the Dwars River Valley." Urban Forum 22, no. 1 (2010): 53–73. http://dx.doi.org/10.1007/s12132-010-9107-4.
Full text
4
Motteux, N., E. NeI, K. Rowntree, and T. Binns. "Exploring community environmental knowledge through participatory methods in the Kat River valley, South Africa." Community Development Journal 34, no. 3 (1999): 227–31. http://dx.doi.org/10.1093/cdj/34.3.227.
Full text
5
Hallinan, Emily, and John Parkington. "Stone Age landscape use in the Olifants River Valley, Clanwilliam, Western Cape, South Africa." Azania: Archaeological Research in Africa 52, no. 3 (2017): 324–72. http://dx.doi.org/10.1080/0067270x.2017.1365438.
Full text
6
Shackleton, Charlie M., and Sheona E. Shackleton. "Household wealth status and natural resource use in the Kat River valley, South Africa." Ecological Economics 57, no. 2 (2006): 306–17. http://dx.doi.org/10.1016/j.ecolecon.2005.04.011.
Full text
7
Madigele, Patricia Kefilwe. "The Economics of Institutions, Equity, Efficiency and Effectiveness: The Case of Water Distribution in Lower Sundays River Valley, South Africa." Environment and Natural Resources Research 7, no. 2 (2017): 98. http://dx.doi.org/10.5539/enrr.v7n2p98.
Full textAbstract:
Water supply disruptions are prevalent in various parts of South Africa. The Lower Sundays River Valley is not an exception. However, there is currently no physical shortage of water in the catchment. This study defines institutional arrangements and dynamics in the water sector in South Africa, using the Lower Sunday River Water Users Association as the case study. Key informant interviews reveal that relevant stakeholders are not adequately represented in management committees. Such institutional arrangement vacuums can lead to a failure of the water institutions in the catchment to provide water resources effectively.
8
Zietsman, J., L. L. Dreyer, and L. Mucina. "Floristic links between the West Coast and South Coast (South Africa) — Is the Breede River Valley a migration route?" South African Journal of Botany 74, no. 2 (2008): 392. http://dx.doi.org/10.1016/j.sajb.2008.01.167.
Full text
9
Krige, J., L. L. Dreyer, and L. Mucina. "Floristic links between the West Coast and South Coast (South Africa) - is the Breede River Valley a migration route?" South African Journal of Botany 75, no. 2 (2009): 408. http://dx.doi.org/10.1016/j.sajb.2009.02.071.
Full text
10
Sampson, C. G. "Chronology and dynamics of Later Stone Age herders in the upper Seacow River valley, South Africa." Journal of Arid Environments 74, no. 7 (2010): 842–48. http://dx.doi.org/10.1016/j.jaridenv.2008.11.001.
Full textDissertations / Theses on the topic "Hennops River Valley (South Africa)"
1
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.
Full textAbstract:
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 relationship between rainfall, and flood events, for
seed dispersal, germination and establishment, and consequently spatial extent, yet little is known
about the relationships in the South African context. The aim of this project was to assess the
impact of high rainfall and flood events on the establishment and distribution of E. camaldulensis
along the Middle Breede River, between Worcester and Swellendam in the Western Cape, by
establishing the current spatial extent of E. camaldulensis along the river, identifying flood events
since 1950 and evaluating the impact rainfall and flood events had on the spatial extent thereof.
Aerial imagery, rainfall, discharge and river level data was obtained dating back to 1980, as well as
field data comprising of GPS-bounding of E. camaldulensis stands. Additionally, density
measurements were obtained and interviews conducted with land users. Spatial analysis of aerial
imagery, coupled with perimeter (GPS) data and density data were used to conduct spatio-temporal
analysis, employing GIS and conventional statistical approaches to address the various objectives.
Results indicated E. camaldulensis stands had a small overall increase in spatial extent since 1980.
Flooding and rainfall events coincided with an increase in occurrence of E. camaldulensis with
elevated river levels and frequent flooding, while spatial variation of this relationship was observed.
The hydrological regime of the Breede River coincides with a slow increase in spatial extent of E.
camaldulensis stands, but no affirmation of a positive real-world relationship was possible using the
available data. Results further suggested, based on the current age class composition, that existing
stands originated roughly during 1980, possibly due to commercial forestry related seeding into the
river. Reduced fragmentation between stakeholders, educational programmes and improved
reporting systems were recommended for improved IAP management within the area.<br>AFRIKAANSE OPSOMMING: Eucalyptus camaldulensis, of Rooibloekom (RB), is ‘n waardevolle kommersiële, maar erkende
indringer plantspesie (IP) wat veral oewersones in Suid-Afrika indring. Die indringerpotensiaal van
E. camaldulensis is welbekend, en spesifieke regulasies, gemik op die bestuur van RB en ander
spesies is reeds aangeneem. E. camaldulensis is veral bekend vir sy hoë watergebruik, sy
vermindering van biodiversiteit, sy vermoë om riviervorme te verander en sy algehele impak op die
hidrologiese patroon van riviere waarmee dit in aanraking kom. In sy oorspronklike
verspreidingsgebied in Australië toon E. camaldulensis ‘n bepaalde verhouding tussen reënval en
vloedgebeurtenisse vir saadverspreiding, ontkieming en vestiging en derhalwe die ruimtelike
verspreiding van die spesie; alhoewel hierdie verhouding in die Suid-Afrikaanse konteks steeds
redelik onverduidelik bly. Die doelwit van hierdie studie was dus om die impak van hoë reënval en
vloedgebeurtenisse op die ruimtelike verspreiding en vestiging van E. camaldulensis teenaan die
Middel Breëde Rivier, spesifiek tussen Worcester en Swellendam, te evalueer. Hierdie doelwit was
bereik deur die historiese ruimtelike verspreiding teenaan die rivier te meet, hoë reënval en
vloedgebeurtenisse vanaf 1980 te identifiseer, en die huidige verspreiding en omtrek met GPS te
meet. Digtheidafmetings, sowel as onderhoude met belanghebbendes teenaan die rivier was ook
opgeneem. Visuele interpretatasie van lugfotos, sowel as omtrek (GPS) en digtheid-data was
gebruik om ruimtelike analise uit te voer, deur die gebruik van GIS en konvensionele statistiese
metodes, ten einde die doelwitte te evalueer. Resultate dui aan dat E. camaldulensis areas ‘n klein
algemene groei getoon het sedert 1980. Hoë-reënval en gereëlde vloedgebeurtenisse het ook
gepaard gegaan met ‘n groei van E. camaldulensis oppervlak, alhoewel hierdie verhouding
ruimtelike variasie getoon het, met ‘n algemene groei patroon gemerk oor die volledige
studietydperk. Ook geen stimulerende verhouding kon vanuit die beskikbare data bevestig word nie.
Addisionele resultate het aangedui dat die verspreiding van E. camaldulensis ongeveer 1980
onstaan het, moontlik as gevolg van kommersiële bosbou-aanplanting en verwante saadverspreiding
in die rivier vanaf daardie tyd. Aanbevelings ten opsigte van verbeterde indringerbestuur sluit in die
beperking van huidige fragmentasie tussen belanghebbendes en betrokke verwyderingsorganisasies,
addisionele onderrigprogramme sowel as die verbetering van terugvoersisteme.
2
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.
Full textAbstract:
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 communities in former homelands (racial reserves) from participation in IWRM. The research presented in this thesis was based on the search for philosophies and methods to involve the rural, former homeland people of the Kat River Valley in South Africa in IWRM. Post-modern, humanist and some logical positivist geographical philosophies were used during the research. This research applied Participatory Rural Appraisal (PRA) philosophy and methods and was influenced by the seminal work of Paolo Freire (1972). In addition, the use of innovative methods for engagement of the oppressed, using theatre methods developed by Augusto Boal (1995, 2000) was explored to add value to PRA. In addition, the application of Action Research ensured that community participants were actively involved in the research being conducted for this thesis. The applied research in the Kat River Valley in South Africa evolved through three key phases. In Phase One quantifiable data on the Kat River Valley and its residents was sought. This investigation did not empower the resident communities of Fairbairn and Hertzog – a lesson that influenced the move to more participatory methods in subsequent phases of the research. Lessons learned from using surveys encouraged exploration of participatory methods to enable participants to become “co-learners”. Phase Two of the research commenced with a series of feedback meetings, in which participants recognised that they faced an environmental crisis. Through a series of participatory workshops, residents came to acknowledge and affirm their environmental knowledge. Residents then committed themselves to gaining a deeper understanding of their environment and their lives. My role changed from that of a researcher to a facilitator. Phase Three of the research and the shift to Action Research commenced after local residents identified the need to personally take charge of their environmental challenges in the Kat River Valley and recognised the need to collaborate at a catchment scale for effective IWRM. This eventually led to the formation of a Water User Association and Catchment Forum. The key theoretical contribution of the thesis relates to the identified relationship between the development orientation and ecological paradigm, and an assessment of the impact this has on the inputs, processes, outputs and outcomes of IWRM. This theoretical contribution is equally valid in other countries, where the tradeoffs are essentially the same, but the framework for making the choices is different because of varying socio-economic and biophysical circumstances
3
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.
Full textAbstract:
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 important to have an understanding of stakeholders‟ perceptions of the impacts of these events. The research therefore focuses on stakeholders‟ perceptions of the impacts of the Breedekloof Outdoor and Wine Festival (BOWF) hosted in the Breedekloof region in the Breede Valley of the Western Cape Province. Underpinning this study was the understanding that the perceived impacts of the event are pivotal for the future planning, management and sustainability of the event as well as to minimise negative and maximise positive impacts of the BOWF. The study applied a mixed-methods approach, compiling data through survey questionnaires targeting 341 event attendees, 374 residents, 28 established businesses, 8 sponsors and 15 venue owners. Key informant interviews with the event organiser and direct observations with event attendees and residents were used as methods to collect data, using several sampling methods. A spatially based systematic sampling approach was used for the event attendees and residents‟ surveys, purposive sampling for the event organiser, venue owners and sponsors, while census sampling was used for the established businesses. For the purpose of the study, 767 respondents were targeted; only 730 responded.
The results demonstrate support of the event among residents from Rawsonville as they perceive the event as beneficial to local businesses in the region. It displays the town and its beauty and does not cause any inconvenience to local lifestyles. However, there were mixed views on inequalities relating to employment opportunities and involvement in the planning and management of the event. Most established businesses, on the other hand, were also not directly involved in the Festival; even though there were opportunities for businesses to optimise profits and engender publicity, most did not use this opportunity to their advantage. The event attendees at the Festival were mostly from the Western Cape, attending the Festival in groups of friends with the large majority spending/planning to spend money at the Festival.<br>South African Department of Tourism
4
Salman, Lindile Andrew. "Challenges faced by the Eastern Cape Provincial Department of Local Government integrated development planning unit in supporting municipalities to deliver credible integrated development plans, using Sundays River Valley Municipality as a case study." Thesis, Nelson Mandela Metropolitan University, 2013. http://hdl.handle.net/10948/d1021092.
Full textAbstract:
This Research was undertaken to explore the challenges faced by the Eastern Cape Department of Local Government and Traditional Affairs Integrated Development Planning Unit to support municipalities to deliver credible Integrated Development Plans (IDPs), using Sunday’s River Valley Municipality as a case study. The legal obligation of the Department of Local Government is to support Municipalities to able them to perform their function and execute the duties allocated to them. This mandate originates from the Constitution of the Republic of South Africa, Act 108 of 1996. The Provincial Department of Local Government Integrated Development Unit is therefore obliged to support and guide municipalities in the development of IDPs by mobilizing and coordinating sector departments to participate in IDP processes, and to identify and allocate funds for projects. It is suggested that the DLGTA IDP Unit is not doing enough to support municipalities so as to deliver credible IDPs, hence the wide-spread violent service delivery protests. The study aimed at establishing whether there is a direct link between the efforts or not of DLGTA to help the municipality to develop a credible IDP and service delivery protests. The IDP may be credible, but the implementation may be flawed, or funding does not flow as expected, or the people on the ground may not understand that it may take years to deliver services. The study targeted senior managers of coordinating Departments, the Sunday’s River Valley Municipality (SRVM) and IDP Managers of SRVM and the Cacadu District Municipality (CDM). The study discovered that sector departments do not participate meaningfully in IDP processes mainly because: (1) SRVM does not extend invitations to all sector departments to attend IDP meetings; (2) There is no legal obligation to participate at local level; (3) There appears to be no commitment shown by senior managers of SRVM on IDP Processes. The DLGTA IDP Unit efforts to assist SRVM to deliver credible IDPs cannot be deemed successful, because the SRVM IDP continued to receive medium rating score for four years in succession. The DLGTA IDP Unit never paid attention to the issues cited above as the cause of stagnation of SRVM IDP. The DLGTA IDP Unit was not aware that the issues cited above were the cause for the poor SRVM IDP until the researcher brought it to their attention. It is therefore recommended that the culture of participation in the IDP processes by top management of both SRVM and DLGTA should be included in the performance contracts of top management officials. It is also recommended that the Inter Governmental Relations (IGR) Framework Act be reviewed to recognize IGR IDP Structures at local level such as IDP Representative Forums. The Act currently is silent on those structures at local level.
5
Mohobane, Thabiso. "Water resources availability in the Caledon River basin : past, present and future." Thesis, Rhodes University, 2015. http://hdl.handle.net/10962/d1019802.
Full textAbstract:
The Caledon River Basin is located on one of the most water-scarce region on the African continent. The water resources of the Caledon River Basin play a pivotal role in socio-economic activities in both Lesotho and South Africa but the basin experiences recurrent severe droughts and frequent water shortages. The Caledon River is mostly used for commercial and subsistence agriculture, industrial and domestic supply. The resources are also important beyond the basin’s boundaries as the water is transferred to the nearby Modder River. The Caledon River is also a significant tributary to the Orange-Senqu Basin, which is shared by five southern African countries. However, the water resources in the basin are under continuous threat as a result of rapidly growing population, economic growth as well as changing climate, amongst others. It is therefore important that the hydrological regime and water resources of the basin are thoroughly evaluated and assessed so that they can be sustainably managed and utilised for maximum economic benefits. Climate change has been identified by the international community as one of the most prominent threats to peace, food security and livelihood and southern Africa as among the most vulnerable regions of the world. Water resources are perceived as a natural resource which will be affected the most by the changing climate conditions. Global warming is expected to bring more severe, prolonged droughts and exacerbate water shortages in this region. The current study is mainly focused on investigating the impacts of climate change on the water resources of the Caledon River Basin. The main objectives of the current study included assessing the past and current hydrological characteristics of the Caledon River Basin under current state of the physical environment, observed climate conditions and estimated water use; detecting any changes in the future rainfall and evaporative demands relative to present conditions and evaluating the impacts of climate on the basin’s hydrological regime and water resources availability for the future climate scenario, 2046-2065. To achieve these objectives the study used observed hydrological, meteorological data sets and the basin’s physical characteristics to establish parameters of the Pitman and WEAP hydrological models. Hydrological modelling is an integral part of hydrological investigations and evaluations. The various sources of uncertainties in the outputs of the climate and hydrological models were identified and quantified, as an integral part of the whole exercise. The 2-step approach of the uncertainty version of the model was used to estimate a range of parameters yielding behavioural natural flow ensembles. This approach uses the regional and local hydrological signals to constrain the model parameter ranges. The estimated parameters were also employed to guide the calibration process of the Water Evaluation And Planning (WEAP) model. The two models incorporated the estimated water uses within the basin to establish the present day flow simulations and they were found to sufficiently simulate the present day flows, as compared to the observed flows. There is an indication therefore, that WEAP can be successfully applied in other regions for hydrological investigations. Possible changes in future climate regime of the basin were evaluated by analysing downscaled temperature and rainfall outputs from a set of 9 climate models. The predictions are based on the A2 greenhouse gases emission scenario which assumes a continuous increase in emission rates. While the climate models agree that temperature, and hence, evapotranspiration will increase in the future, they demonstrate significant disagreement on whether rainfall will decrease or increase and by how much. The disagreement of the GCMs on projected future rainfall constitutes a major uncertainty in the prediction of water resources availability of the basin. This is to the extent that according to 7 out of 9 climate models used, the stream flow in four sub-basins (D21E, D22B, D23D and D23F) in the Caledon River Basin is projected to decrease below the present day flows, while two models (IPSL and MIUB) consistently project enhanced water resource availability in the basin in the future. The differences in the GCM projections highlight the margin of uncertainty involved predicting the future status of water resources in the basin. Such uncertainty should not be ignored and these results can be useful in aiding decision-makers to develop policies that are robust and that encompass all possibilities. In an attempt to reduce the known uncertainties, the study recommends upgrading of the hydrological monitoring network within the Caledon River Basin to facilitate improved hydrological evaluation and management. It also suggests the use of updated climate change data from the newest generation climate models, as well as integrating the findings of the current research into water resources decision making process.
6
Fox, Helen Elizabeth. "The role of anthropogenic disturbance in the creation of a socio-ecological landscape." Thesis, Rhodes University, 2005. http://hdl.handle.net/10962/d1008061.
Full textAbstract:
The aim of this thesis is to examine the role of anthropogenic disturbance in the creation of a socio-ecological landscape. Three key questions were answered: what impact has past anthropogenic disturbance had on present vegetative characteristics; what value did this disturbed landscape have to local people; how did the local peoples' worldviews and eco-cosmologies influence how they perceived, valued and managed their landscape? Research was based in a rural, predominantly amaXhosa village in the Kat River valley, Eastern Cape, South Africa. Four major landscape components characterised the environment, namely dense forests, former grazing lands, abandoned fields and old settlements. A combination of qualitative and quantitative methods were adopted, consisting of a vegetation and soil survey and social science methods including semistructured interviews, focus groups, transect walks and participant observation. The key finding was that anthropogenic disturbance is necessary to enhance the potential of the area to support human habitation. However, anthropogenic disturbance can have positive or negative effects for both local people and the environment. An intermediate level of disturbance is a key factor leading to a resilient socio-ecological system. Various anthropogenic disturbances have had significant affects on vegetation characteristics in terms of species richness, and a change in vegetation composition and species heights. Of the three anthropogenic landscapes examined, former grazing lands were the least intensively disturbed. They were also more species rich and structurally diverse than areas that were under agricultural production or used as a settlement. Dense forests, although the least desirable landscape to local people were, together with sacred pools, sources of ecosystem renewal and played a critical role during times of disturbance. Anthropogenic disturbance has added value to local people's livelihoods; this disturbance has resulted in a patchy landscape that supplies a wide variety of resources to local people. Local people are dependent on their environment for their basic needs; this has encouraged sustainable management practices. The local AmaXhosa still retain many elements of their traditional worldview, which has many characteristics of Animism. The environment is an integral component of their belief system and certain sites and species have significant cultural value and are protected.
7
Naidoo, Merle. "A situational analysis on the public participation processes in integrated water resources management in the Kat River Valley, Eastern Cape, South Africa." Thesis, Rhodes University, 2009. http://hdl.handle.net/10962/d1005530.
Full textAbstract:
Public participation in water management processes is one of the internationally recognised and adopted principles of Integrated Water Resource Management. The South African Department of Water Affairs and Forestry aims to facilitate the decentralisation of water management powers to the local community level via the establishment of regional and local water management institutions, namely Catchment Management Agencies, Water User Associations and Catchment Forums. The National Water Act (No. 36 of 1998) acknowledges that the discriminatory laws and practices of the past have prevented equal access to water and the use of water resources. The contribution of water management institutions to social and economic development, in particular poverty eradication and food security, is mentioned in the water act. The participation of poor rural communities living in the Kat valley, an area where an elite minority reap the benefits of water use for agriculture, is the focus of this research. Their participation, perceptions and experiences are documented and explored to determine how the promulgation of post-apartheid water policy and legislation has affected their access to water. The results of this research are based on data collected from several methods including surveys, workshops and observation. Analysis of these data revealed the complicated and stagnant nature of participation from Kat valley rural communities in local water management initiatives and organisations. Existing water management organisations were not successful in stimulating poor people’s participation as they were unable to address their primary concerns, namely a secure source of potable water, employment and access to water for agricultural purposes. This thesis asserts that the Department of Water Affairs and Forestry, as the custodian of South Africa’s water resources, has not taken on a supportive, accountable role in assisting marginalised communities with improving their access to water for domestic purposes and securing access to water rights for productive use. This, in turn, has led to dissatisfaction among these communities and a wariness of participatory activities that focus mainly on raising environmental awareness. The establishment of effective accountability relationships among all stakeholders, pro-poor water management structures and initiatives, as well as integrated and co-operative management of natural resources, are needed to revitalise the present participation of poor communities living in rural areas.
8
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.
Full textAbstract:
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 interbedded chert and dolomites may result from minor cyclical marine trangressions and regressions or be a geochemical response to the periodic flooding of freshwater carbonate and flats and tidal deltas. These fundamental geological differences are reflected in correspondingly different development of karst. Transmissive zones in the chert poor units are generally discrete solution features in massive dolomite, 1 m to 2 m thick. Transmissive zones in the chert rich units comprise thick (up to 60 m) and extremely weathered chert with a high void content resulting from the dissolution of carbonate material. The relative importance of various geological features to the development of the karst was assessed using information from two extensive hydrogeological investigations of the area. From the results it bas been concluded that lithostratigraphy, including the occurrence of palaeokarstic horizons, is the major control of aquifer properties. All other geological features are of lesser importance but may nevertheless be associated with enhanced transmissivi ties in any given unit. Faults and lineaments are the structural features most widely associated with highly transmissive zones. The knowledge gained in this study is applicable elsewhere as the principal hydrogeological characteristics of the study area are common to many of the Chuniespoort Group aquifers in the Pretoria - Witwatersrand - Vereeniging Region.
9
Botes, Christo. "Reproductive co-existence among five sympatric single-stemmed aloes in the Gamtoos River Valley, Eastern Cape." Thesis, Nelson Mandela Metropolitan University, 2007. http://hdl.handle.net/10948/481.
Full textAbstract:
In this study I documented the convergence of five congeneric bird-pollinated plants (Aloe pluridens, A. lineata var. muirii, A. speciosa, A. africana, and A. ferox) into three functional groups based on size, shape, and the arrangements of flowers on the inflorescence, but also nectar rewards, pollen deposition sites on the bird-pollinators, and the degree to which bees play a role in their pollination. Individuals of similar functional groups were divergent in their peak flowering times and limited their degree of flowering overlap further by spatial aggregation and niche separation, within the Thicket of the Gamtoos River Valley. The nectar properties were especially useful in structuring the bird pollinator community, which resulted in greater ethological isolation and hence, greater reproductive assurance in the mixed co-flowering plant communities. Choice array experiments revealed that it was the fine scale aggregation of flowering individuals that ensured that bird-pollinators feed selectively, since when equal choice was available, interspecific visitation increased significantly compared to natural scenarios. Bird behaviour and the ecological intermediateness of one to the species explained its prominence in hybrid combinations. The spatial occurrence of hybrid individuals can be traced back to the energetics of foraging and its influence on bird floral constancy. The pollination ecology of similar South African Aloe species were extrapolated from these and recent findings by various authors, but emphasises the need for a robust natural phylogeny of the Aloaceae in order to draw comprehensive conclusions on the evolutionary radiation of this highly charismatic group.
10
Fike, Bradley Robin. "The demography and population dynamics of a re-introduced black rhinoceros population on the Great Fish River Reserve, Eastern Cape Province." Thesis, Rhodes University, 2011. http://hdl.handle.net/10962/d1020869.
Full textAbstract:
The re-introduction of black rhinoceros onto the Great Fish River Reserve in the Eastern Cape, following the species absence for over a century, created an opportunity to study this species in the thicket biome, and in particular the succulent thicket of the Great Fish River valley. The thicket biome is quite different from the habitats in which other extant populations of these animals are found and where studies of their demography have been undertaken. Data collection occurred from May 1986, with the arrival of the first four animals to December 2008, when the population was estimated to be 144 individuals. A variety of monitoring techniques were used including direct ground observations, aerial helicopter census, aerial monitoring by microlight aircraft, camera traps and opportunistic observations, each with its own advantages and disadvantages. The combination of methods and effort has resulted in the population being recognized as completely known with up to 97% of the animals being located at least once per year with a mean frequency of sightings of 11.5 per animal per year. In 2008, the population was about 20% juvenile, 36% sub-adult and 44% adult with a female biased sex ratio of 1.3 females per male. Mean age at first birth was about 80 months and this increased significantly with increasing density of black rhinoceroses. Mean intercalf interval was about 28 months and 41% of adult females gave birth each year. Mortality rates were low for juveniles, higher for sub-adults and higher for males than females. There was a weak but significant positive effect of density on male mortality. Population growth rate was about 10% and was not significantly affected by density. These results suggest that this population is beginning to show the first indications of density dependant constraints and that harvesting should be implemented in order to maintain the productive tempo. A secondary goal of the Management Plan will then be realized as the population functions as a donor to establish founder populations elsewhere within the Diceros bicornis minor range.
Books on the topic "Hennops River Valley (South Africa)"
1
Morris, Alan G. The skeletons of contact: A study of protohistoric burials from the Lower Orange River Valley, South Africa. Witwatersrand University Press, 1992.
Find full text
2
Conserved spaces, ancestral places: Conservation, history and identity among farm labourers in the Sundays River Valley, South Africa. University of KwaZulu-Natal Press, 2014.
Find full text
3
Alexander, Jocelyn. Violence & memory: One hundred years in the "dark forests" of Matabeleland. James Currey, 2000.
Find full text
4
Canada. Parliament. House of Commons. Bill: An act to provide for the expenses of the Canadian volunteers serving Her Majesty in South Africa. S.E. Dawson, 2003.
Find full text
5
Canada. Parliament. House of Commons. Bill: An act respecting the members of the North-West Mounted Police Force on active service in South Africa. S.E. Dawson, 2003.
Find full text
6
The testing grounds of modern empire: The making of colonial racial order in the American Ohio country and the South African Eastern Cape, 1770s-1850s. Peter Lang, 2008.
Find full text
7
Kyle, Peter. "Building capacity for community economic development: The case of the Kat River Valley, South Africa". 2004.
Find full text
8
O, Ranger T. Violence ; Memory: One Hundred Years in the 'Dark Forests' of Matabeleland (Social History of Africa). Heinemann, 2000.
Find full text
9
O, Ranger T. Violence ; Memory: One Hundred Years in the 'Dark Forests' of Matabeleland (Social History of Africa). Heinemann, 2000.
Find full text
10
An evaluation of community-driven economic development, land tenure, and sustainable environmental development in the Kat River Valley. Human Sciences Research Council, 2000.
Find full textBook chapters on the topic "Hennops River Valley (South Africa)"
1
"11. BREEDE RIVER VALLEY." In Wines of the New South Africa. University of California Press, 2019. http://dx.doi.org/10.1525/9780520954830-014.
Full text
2
"Ethnic competition and claims to land in South Africa: the Kat River valley, Eastern Cape." In Land Rights, Ethno-nationality and Sovereignty in History. Routledge, 2004. http://dx.doi.org/10.4324/9780203073711-23.
Full text
3
Drori, Ron, Naama Berg, and Avi Perevolotsky. "Monitoring the State of Nature in Israel." In Stepping in the Same River Twice. Yale University Press, 2017. http://dx.doi.org/10.12987/yale/9780300209549.003.0007.
Full textAbstract:
This chapter presents a case study of the Israeli National Biodiversity Monitoring Program (IBM) that encompasses a diverse set of ecosystems. Israel is located at a crossroads of Africa, Asia, and Europe. It sits at the southeastern tip of the Mediterranean ecosystem, bordering the vast Saharo-Arabian desert belt to its south and connected via the Rift Valley to the heights of Southeast Asia and the dry tropical ecosystems of East Africa. This combination of geography and ecology provides habitats for a remarkably high number of species, but the high densities of Israel's population and its rapid development, intensive land use, and climatic change threaten this biodiversity. A key component of a strategy to conserve biodiversity is a monitoring program that can identify the current state and trends—stable, declining, or thriving—of biodiversity in a country. The case study discusses the goals and implementation of the IBM, with particular attention to the challenges of replication and repeatability in this long-term monitoring program.
4
Bugarin, Flordeliz T. "People at the Gates." In British Forts and Their Communities. University Press of Florida, 2018. http://dx.doi.org/10.5744/florida/9780813056753.003.0011.
Full textAbstract:
During the early nineteenth century in South Africa, the British built Fort Willshire on the banks of the Keiskamma River. At its gates, they established the first official trade fairs and mandated that trade throughout the Eastern Cape be confined here. This area became a vortex in which a variety of people convened, traded goods, and influenced cultural and economic interaction. This chapter introduces the various Africans who gravitated to the region, claimed the surrounding lands throughout the river valley, and vied for economic resources and political power. By looking at the archival records, oral traditions, and archaeological evidence, research demonstrates that the region consisted of a variety of people with different backgrounds and affiliations. Furthermore, this area provides a model for understanding the impact of the British on the Xhosa, yet it is just as much a window to the interactions between various Xhosa factions and chiefdoms.
5
Kimbel, William H., Yoel Rak, Donald C. Johanson, Ralph L. Holloway, and Michael S. Yuan. "Background." In The Skull of Australopithecus afarensis. Oxford University Press, 2004. http://dx.doi.org/10.1093/oso/9780195157062.003.0004.
Full textAbstract:
Australopithecus afarensis is a fossil hominin species known from at least four East African Rift Valley sites ranging from northern Ethiopia in the north to northern Tanzania in the south and bridging the time period between approximately 3.6 and 3.0 million years ago (Ma). First identified in the late 1970s as the bipedal but craniodentally apelike rootstock from which later Australopithecus and Homo evolved (Johanson et al., 1978; Johanson and White, 1979), A. afarensis constituted the first substantial record of unequivocal human ancestors older than 3.0 million years (Myr). An array of more recently made discoveries have placed A. afarensis in a pivotal position in early hominin phylogeny, bracketed in time between, on the one hand, two temporally successive species, A. anamensis and Ardipithecus ramidus, that jointly extend the hominin record back to 4.4 Ma (M. Leakey et al., 1995, 1998; White et al., 1994, 1995), and, on the other hand, the earliest strong (stratigraphic) evidence for hominin lineage diversification, with the first known records of A. africanus (ca. 2.7 Ma) in southern Africa, and of A. aethiopicus (ca. 2.7 Ma) and A. garhi (2.5 Ma) in eastern Africa (Walker et al., 1986; Asfaw et al., 1999).2 The task of sorting out the relationships among all of these species hinges on the interpretation of A. afarensis itself, from its alpha taxonomy and phylogenetic role to its pattern of evolution over time. A prerequisite to achieving this goal is a more complete knowledge of the A. afarensis fossil record, narrowing gaps in our knowledge of anatomy and variation, as well as of distributions in space and time. On sample size alone, A. afarensis is the best-known hominin species in the eastern African fossil record. The vast majority of fossils in the A. afarensis hypodigm, some 360 specimens, or approximately 90% of the total, have been recovered at the Hadar site, from the 200+ meter sequence of silts, sands, and clays that comprise the Hadar Formation, which is exposed along the drainages of the Awash River in the Afar Depression of northern Ethiopia (Johanson et al., 1982a; Kimbel et al., 1994).