No abstract available. / Thesis (M.U.R.D.P.)-University of KwaZulu-Natal, 2005.

The aim of the study was to find out whether or not engagement in urban agriculture for individuals and households is a response to a lack of formal wage employment in the post-apartheid period. This period is characterised by changes in the economy of South Africa which led to an observed increase in poverty and unemployment and an increase in informal employment. The study utilised both quantitative and qualitative methods to look at urban farming issues in KwaZulu-Natal. The quantitative data came from the KwaZulu-Natal Income Dynamics Surveys (KIDS), which carried out surveys in three waves spanning the period of democratic transition over a 10-year period in 1993, 1998 and 2004. This data was analysed using the statistical package STATA and employed regression modelling techniques to investigate the odds of engagement in urban agriculture, given certain individual and household characteristics, which is a particular nuance for this study. Because of its potential in food production and income generation, a smaller-scale qualitative farmer survey was undertaken in two different communities, comparing three different categories of home gardening, community gardening and market gardening in KwaZulu-Natal, using a semi-structured questionnaire. This component sought to document, in farmers’ own words, their experiences and practice of farming in an urban environment and gave in-depth insights about the motivation of the people involved, the types of food crops grown, and so on. Key informant interviews were conducted with a community of professionals for illuminating their perspectives on the practice of urban agriculture in KwaZulu-Natal. The key findings of the study are that urban agriculture is an activity that is undertaken by people seeking a survival strategy when their preferred activity (such as formal employment) is not available and it can be an activity undertaken by entrepreneurs for income generation. According to their main activity status, the types of people that engage in urban agriculture include those in wage employment and the unemployed, as well as the non-economically active. The contribution of agricultural income to total household income represents miniscule amounts, at an average of less than one percent. Regression modelling results, combining person level and household level variables, predicted more likely odds of farming for women, by a factor of 1.67. Increase in the number of years of education decreased the odds by 0.90 times. If a person lost employment, this increased their odds of engaging in urban agriculture by 1.23 times. People in the age group 36-46 years predicted the highest likelihood for participation in urban agriculture, by a factor of 2.54. Larger household size predicted odds more likely to engage while poor households also predicted odds more likely to engage, by a factor of 2.07 times. Urban agriculture is vastly heterogeneous and is undertaken by all income groups. It is a result of both push and pull factors. People engage in it neither as a survival strategy nor an entrepreneurial strategy only. It is, however, an activity in which the poor are disproportionately represented. The potential of urban agriculture to generate employment is linked to the nature of support received from government and non-governmental organisations. / Thesis (Ph.D.)-University of KwaZulu-Natal, Durban, 2012.

In March 2007 the KwaZulu-Natal coastline was devastated by an extreme storm event. There is international concern that such events are associated with climate change. There is evidence of global changes in climate but there is still uncertainty as to whether they are anthropogenic or part of natural decadal (or longer) cycles. The increase in frequency and intensity of extreme storm events will impact on the sediment dynamics of coastlines and the associated risks need to be modelled and quantifed so that they can be included in coastal planning and management. Durban is a coastal city on the east coast of South Africa and has been used as a case study to identify trends in wave parameters and beach profile volumes. The correlation between profile erosion, waves and tides was explored using singular spectral analysis. The dependence between wave parameters was modelled using copulas. The decadal trends were introduced into these models using a nonstationary generalised extreme value distribution. Numerical models (SWAN, SBEACH, XBEACH) were used to transform the statistical model to near shore waves and estimate the associated erosion. The copula model was used to investigate the relationship between multivariate return periods and erosion return periods. Coastal defence options were reviewed and those appropriate for Durban were identifed. This study provides a review of Durban and Richards Bay's 18 years of Waverider data. It presents wave parameter exceedance statistics and wave height return periods for Durban. Durban's wave data showed increasing trends in maximum significant wave heights, peak wave period, storm event frequencies and a trend towards a more southerly mean wave direction. However, only the increase in peak period and wave direction was statistically significant. The trend in wave direction is considered a potential coastal hazard as it has the potential to increase the littoral drift by 1 % per annum. Durban's beach profiles have shown a long term erosion trend which is due to a combination of wave and sea level trends, and a reduction in sediment supply. The reduction in sediment supply from rivers was found to be both anthropogenic and natural. Storm, wave parameter and sea level trends were estimated to contribute more than 75 % to the total long term erosion. It was found that it takes an average of 2 years for a beach to recover to its pre-storm volume. Different types of coastlines recover at different rates and these recovery rates should be considered in risk assessments. A method for estimating future impacts due to storm and sea level trends has been proposed in the form of a non-stationary copula based statistical model. In general a bivariate return period of wave height and duration was found to approximate erosion return periods, while a method for estimating an analogous multivariate storm and erosion return period was developed. Geotextile sand filled containers were found to be a suitable coastal defence as they satisfy social, environmental and political pressure. / Thesis (Ph.D.)-University of KwaZulu-Natal, Durban, 2012.

In KwaZulu-Natal, South Africa, many of those who search for solace from mental illness draw on one or more of the three vigorous therapeutic traditions of healing to which the region is heir. Western psychiatry and its formal institutions have a long history in this region: in 1868, the Colony of Natal passed southern Africa's first 'lunacy legislation'; and in 1880, the Natal Government Asylum was opened on the Town Hill, Pietermaritzburg. Although founded on the precepts of nineteenth century liberalism, by 1910, the Pietermaritzburg Mental Hospital (as it was now known) increasingly reflected a national concern with a racialised 'mental science' and Natal psychiatry became somewhat marginalized within a broader network of national asylum administration. During World War 1, too, the white citizens of Pietermaritzburg sought to have future expansion of the asylum halted, and its inmates hidden from public view. Although the story of Western psychiatry in Natal and Zululand is important for any history of mental illness in South Africa, in the nineteenth and early twentieth centuries, colonial psychiatry had relatively limited significance for the majority of people. Since the nineteenth century, African understandings of and treatments for illness have proved especially resilient, interacting with and at times adopting - and adapting - elements of Western biomedicine, as well aspects of healing strategies whose origins lie in Indian concepts of health and medicine first brought with indentured workers from the 1860s. For whites, as well as for Africans and Indians, committal to the asylum came, most typically, at the end of a lengthy quest to find a cure for mental illness. Throughout the nineteenth and early twentieth centuries, other sectors of healing proved to be remarkably flexible, offering new explanations for apparently new forms of illness - including insanity - that accompanied the political, economic and social upheavals of the time, as well as producing new therapies, strategies, and specialists to meet them. It is this variety of responses to mental illness, and ways of attempting to negotiate a path to a state of mind that might be termed 'mental health', that this dissertation traces. / Thesis (Ph.D.)-University of KwaZulu-Natal, Durban, 2004.

The eastern portion of the Namaqua-Natal Mobile Belt, the Natal Metamorphic Province is divided into four main tectonostratigraphic units. These units comprise two accreted island arcs: the Mzumbe and Margate Terranes; an imbricately thrust nappe zone consisting of four ophiolitic nappes in a hinterland-dipping duplex; and the highly deformed metavolcaniclastic/metagreywacke Mfongosi Group directly adjacent to the stable northern foreland of the Kaapvaal Craton. Theories of late-tectonic left-lateral movement in the southern island arcs are extrapolated northwards of the southern margin of the Kaapvaal Craton coincident with the Lilani-Matigulu Shear Zone. The relative timing and structural context of vein-hosted mineralization with respect to major recognized tectonic events is resolved in five separate areas, two in the Natal Nappe Zone and three in the Natal Thrust Front. The Madidima Nappe of the Natal Nappe Zone contains several north-northeast- to northeast-trending and northeast- to east-northeast trending quartzofeldspathic veined reefs considered to have formed in a late-tectonic left-lateral shear system (main shear and synthetic shear orientations, respectively). The northeast- to east-northeast-trending reef is duplicated due to infilling of normally-faulted steep structures in the semi-brittle, incremental normal faulting of the banded amphibolite component of the nappe. Later left-lateral movement has reactivated one of these steep structures along the southern margin of a regional F2-folded band of granite-gneiss in that a southwest extension of this structure may be responsible for sub-economic veining for a length of up to 9 km. The extensive flat-lying topography of the Mbongolwane Flats area, in which the reefs are situated, is accounted for by the accelerated weathering of rocks which underwent sustained late-tectonic metamorphism in the epidoteactinolite facies, accompanied by pervasive shearing and block rotation to the south of the southern limb of the regional F2 fold in the granite-gneiss. A large, kilometer-scale, open advective fluid system which provided fluid-mediated exchange between co-existing rocks existed at the time of vein formation. The fluid system was driven by early-tectonic intrusion of a granite gneiss and amphibole-rich granite. Two areas in the Mfongosi River valley, the northern and southern Mfongosi Valley areas, contain typical evidence of deformation at the leading edge of collision in a mobile belt. The southern Mfongosi Valley area, at the confluence of the Mfongosi and Tugela Rivers, contains veining which resulted from pressure solution of the host metavolcaniclastic/metagreywacke. Veining occupies predictable shear and tension fractures formed during the initial deformation of a foreland margin sequence, in addition to occupying those fractures formed by buckling on the layer-scale. The structural context of the northern Mfongosi Valley veining is defined by subsequent deformation and vein fragmentation such that the metavolcaniclastic/metagreywacke was reduced to a melange in which vein segments acted as competent clasts; a large-scale porphyroblast/matrix system. Formation of the Manyane Thrust to the south of the Mfongosi Group interrupted the normal retrograde metamorphism of the remainder of the Tugela Nappe and initiated a "hot iron effect" whereby a short-lived thermal pulse acted at the thrust plane, producing a reversed geothermal gradient in the underlying Mfongosi group. This reversed gradient would have been counteracted by a steepened normal geothermal gradient in the Mfongosi Group caused by overloading of the Natal Thrust Front by the Natal Nappe Zone. These geothermal gradients partly account for the concentration of veining in the areas of the Mfongosi Group which are directly adjacent to the Manyane Thrust, and directly adjacent to the Kaapvaal Craton, in the lower portions of the thrust front Stable isotope studies indicate fractionation between vein and wall rock under a short-lived, mainly rock-buffered, layer-scale fluid-movement system. Also forming part of the Mfongosi Group of the Natal Thrust Front, the Ngubevu area contains an apparently enigmatic distribution of veining accompanied by gold and base metal mineralization. The structural evolution of the Ngubevu area occurred during consistent left-lateral transpression into which has intruded early-tectonic veins, formed by pressure solution and having the same structural format as the early-tectonic veining in the southern Mfongosi Valley area. Subsequent deformation of the system was accompanied by 1900 -trending tension gashes which were continually ptygmatically-folded, sheared and offset to form occasionally mineralized quartzofeldspathic "blows" and along-strike stringers in the epidote- actinolite schist. Where veining cross-cuts narrow calcite - graphite - sericite - quartz - albite - tourmaline ± chlorite schist layers, gold mineralization occurred. The late-tectonic tension gashes, antitaxially filled by quartz and amorphous calcite, cross-cut the entire range of lithologies. The fluid system during vein deposition varied: during infilling of early-tectonic fractures a short-lived fluid-flow system dominated, with the emplacement of re crystallized wallrock occurring in a closed, non-advective regime under the influence of diffusion caused by pressure solution. The fluid system changed to a more open, advective, greater than layer-scale rock-buffered one with a decreasing contribution of material from immediate host rocks. An internal fluid source is implied for the entire period of vein emplacement, derived from structural analyses which indicates negative dilation across the Mfongosi Group in this area and by comparison of vein:wallrock δ180 values which indicate a lack of igneous-derived fluids. The Phoenix Mine, in the central portion of the Tugela Nappe, and the Ayres Reef, hosted in Manyane amphibolite adjacent to the Manyane Thrust, are grouped together on the basis of their cross-cutting nature and timing with respect to metamorphism and deformation of the host rock, and also due to their similarity in isotopic plots. Both vein sets occur in approximately east-west to east-northeast-trending zones which show evidence of late-tectonic left-lateral movement. Phoenix Mine veining occurs in weakly-metamorphosed meta-gabbro/meta-norite of the Tugela Rand Complex. The Manyane amphibolite demonstrates the amphibolite facies of metamorphism due to the short-lived thermal pulse at the Manyane Thrust. Both sets of veining display slickenlines which are indicative of their emplacement prior to the late-tectonic left-lateral movement. The unusually thick quartz veins of both deposits are the results of late- to post-Tugela Rand Complex fluids or the tapping of late-tectonic metamorphic fluid reservoirs. This caused silica metasomatism and redeposition of material in post-thrusting collapse features. A highly channelized, single-pass fluid system is proposed in the absence of intrusion-derived fluids. Whole rock geochemical data allow a distinction to be made between the Natal Thrust Front and the Natal Nappe Zone: the Foremost nappe of the nappe zone consists primarily of N-type mid-ocean ridge basalts/ocean-floor to within-plate basalts which were intruded prior to nappe emplacement by metaluminous orogenic volcanic arc granitiods. The thrust front displays a lateral variation in metabasite/metasediment ratio, with the ratio increasing from east to west in this inlier. In the east, in the Nkandlha area, melanged metagreywackes dominate and there is a marked paucity of associated metabasites. In the central portions of the thrust front, in the vicinity of the Mfongosi area, active continental margin/continental arc magmatogenic greywackes and arkoses are interlayered with calk-alkaline volcanic arc basalts (volcaniclastics). The greywacke geochemistry indicates little to no mafic/ultramafic influences in sediment contribution and the source of sediment is inferred to be the southern portions of the Kaapvaal Craton. The Nkandlha and Mfongosi area Mfongosi Group segments are considered to be in-situ or para-autochthonous. The western-most Ngubevu area predominantly hosts metabasites. The geochemistry of the metabasites indicates that they are N-type mid-ocean ridge basalts/ocean floor basalts from a destructive plate margin setting. The metabasites are interbanded with metapelitic/metacalcsilicate layers produced in a shallow water oxic environment, here inferred as a spatially-restricted shallow, marginal basin. The metabasites in the Ngubevu area are notably similar to those of the Madidima Nappe, indicating a similar provenance and pre-collisional mode of formation. It is proposed that the variation in the Natal Thrust Front was due to a north-east/south-west distribution of lithological proportions or mixing, with greywackes dominating in the northeast (in proximity to the Kaapvaal Craton) and metabasites dominating in the southwest. Left-lateral transpressional movement within the Mfongosi Group of the Natal Thrust Front, and the Natal Nappe Zone, was continuous throughout plate collision and obduction. / Thesis (Ph.D.)-University of Natal, Durban, 2000.

No abstract available. / Thesis (Ph.D.)-University of Natal, Durban, 1969.

The primary objective of this study was to establish sedimentary models for peat formation in the southern part of the Klip River coalfield during Ecca (Permian) times and to assess palaeoenvironmental controls on coal seam behaviour and distribution. In order to achieve this approximately 2 400 borehole logs and 25 field sections were collected. The coal-bearing Vryheid Formation records early to late Permian fluvio-deltaic sedimentation within the northeastern main Karoo basin. Three informal lithostratigraphic subdivisions, based on the investigations of Blignaut and Furter (1940, 1952), are proposed: the Lower zone, Coal zone and Upper zone. An examination of the structural framework and history of the northeastern Karoo basin reveals that the southern and western boundaries of the Klip River coalfield are defined by zones of rapid basement subsidence : the Tugela and Oannhauser Troughs respectively. There is some doubt as to the locality of the source area to the rivers emptying into the Ecca sea. Ryan (1967) postulated the "Eastern Highlands" situated off the present southeast African coast, but it is contended that the Swaziland area, situated no more than 200 to 300 km to the northeast of the Klip River coalfield, constituted a more plausible source area. The Lower zone represents sedimentation along a westerly to southeasterly prograding coastline dominated by high-constructive lobate or braid deltas, but also showing significant influence by wave processes. The Coal zone, which varies in thickness from 35 to 60 m, represents a major phase of coastal progradation and braided-river deposition on extensive alluvial plains. Significant coal seams formed only during periods of fluvial inactivity, the duration of which was dependent on source-area processes. Coal seam geometry and behaviour in the Klip River coalfield were not influenced by the depositional environments of associated clastic sediments. The following factors were found to have of profound influence in determining the extent, distribution and rate of peat accumulation: 1. Platform stability and temporal and spatial variations therein. 2. The absence or presence of penecontemporaneous clastic sedimentation. 3. Duration of periods of peat formation. 4. Lithology and topographic expression of clastic sediments underlying peat-forming swamps. The peat-forming phase of the Vryheid Formation was terminated by an extensive transgression brought about by an eustatic rise in basin water-level and/or an increased rate of platform subsidence. / Thesis (Ph.D.)-University of Natal, 1988.

This thesis explores home-based care volunteer (HBCV) identity and how it is shaped by context in rural KwaZulu-Natal, South Africa. The literature on home-based care in Africa is dominated by the "burden of care narrative" which is supported by the themes of "women as caregivers", "poverty" and "stigma". The literature presents government and stakeholder collaboration as the general solution to alleviating the burden of care on women caregivers. A wider scope for research within the themes is necessary to discover alternative solutions to the problem of the burden of care. This study ventured to expand the scope of current research by exploring the area of HIV and AIDS home-based care volunteer (HBCV) identity and participation in care and support. Fifteen HBCVs were interviewed about their work and personal life stories and interviewed reflexively using narrative interviewing. Findings indicate that the women's stories were dominated by narratives of gender, poverty and sociopolitical factors (social field narratives). Meta-narratives influencing the women's lives were stories of communal motherhood, aspirations to service-oriented work and religious beliefs and commitment. The women's personal life stories revealed that they saw themselves as distinctively caring. Connections between the different aspects of identity and context revealed that the women made sense of their community participation through their personal identities as strong and loving mothers and the association with the group identity of community mothering. Home-based-care volunteerism was explored as a form of agency in response to a lack of recognition, support and acknowledgement for AIDS caregivers and their patients. Researcher reflexivity through autoethnography and poetry contributed to achieving depth in the study and to the understanding that HBCVs strive for space recognition, acknowledgement and validation for their work. In a resource strained context a balance must be found between material compensation and respect and recognition which can be effective in sustaining community initiated volunteerism. / Thesis (Ph.D.)-University of KwaZulu-Natal, Durban, 2013.

According to Baker (1955), success of plant invasions can be attributed to autogamous breeding systems and generalist pollination systems. A test of Baker's rule was carried out on 19 invasive alien plant species in KwaZulu-Natal, South Africa. Natural levels of fruit set in these plants was high (median= 71.5% fruit set per plant). Breeding system experiments for 18 species showed that 17% of the species are allogamous, 72 % are autogamous and 11% are apomictic. This contrasts markedly with a general flora of 1472 species in which 65% are allogamous, only 14% are autogamous, and 21% are apomictic. Because the breeding systems of the alien species were largely autogamous, pollinators make only a small contribution to the overall reproductive success. Seventy one percent of the 14 alien species for which pollinators were obtained were pollinated by honeybees, which are super-generalists and ubiquitous in a generalist pollination systems. However, some species showed pre-adaptation to relatively specialized pollination systems, involving hawkmoths, butterflies and Xylocopa bees respectively. Thus, alien plants were not visited by a wide range of insects, but rather showed pre-adaption to one or more pre-existing guilds in the new habitat. Pollen limitation experiments showed no evidence that reproductive success in populations of the species is limited by pollen availability. / Thesis (M.Sc.)-University of Natal, Pietermaritzburg, 2001.

Water and sanitation provision is a matter of life and death to humans, since its absence and shortage may increase incidences of waterborne diseases as well as have adverse effects on the learning environment at schools. Every human has a right to an adequate water supply as well as to proper sanitation services. The two cannot be separated; absence of either can have dire public health implications. Schools are an extension of communities and can therefore be seen as a reflection of societal trends and infrastructural conditions. In South Africa the national ministry of water affairs is the main custodian of water and sanitation services to all. However it is the responsibility of the education ministry to provide and extend water and sanitation services and build infrastructure in schools. One of the principles in the water and sanitation policy stipulates that the state has an obligation for ensuring service delivery within available resources. Other relevant stakeholders need to assist the government to augment service delivery. It is against this background that the study focuses on exploring the extent to which stakeholders are involved in providing water services to schools and whether their involvement has resulted in any service delivery improvement or not. The main themes explored in the study include profiling and demographics of the schools, the state of sanitation facilities and water infrastructure, operation and management of sanitation facilities and public health issues. The study also aims to provide an insight into service delivery challenges and includes success stories where partnerships have been involved. The study draws from theories that link water and sanitation to public health, child development and gender based on the human rights principles. Literature on various forms of institutional arrangements is explored in order to understand the regulatory framework upon which service delivery is based. The main findings indicated that sanitation facilities in the rural schools are generally poor unless there has been some type of intervention. Although it is the municipality’s responsibility to ensure potable water is supplied at a local level, these services are often not provided. Service delivery seems to be very slow for most schools. Stakeholder involvement has been at the level of providing infrastructure for the schools, whereas operations and maintenance has remained the responsibility of schools. There are still huge challenges for the government to improve service delivery in schools especially those in the rural areas. and shortage may increase incidences of waterborne diseases as well as have adverse effects on the learning environment at schools. Every human has a right to an adequate water supply as well as to proper sanitation services. The two cannot be separated; absence of either can have dire public health implications. Schools are an extension of communities and can therefore be seen as a reflection of societal trends and infrastructural conditions. In South Africa the national ministry of water affairs is the main custodian of water and sanitation services to all. However it is the responsibility of the education ministry to provide and extend water and sanitation services and build infrastructure in schools. One of the principles in the water and sanitation policy stipulates that the state has an obligation for ensuring service delivery within available resources. Other relevant stakeholders need to assist the government to augment service delivery. It is against this background that the study focuses on exploring the extent to which stakeholders are involved in providing water services to schools and whether their involvement has resulted in any service delivery improvement or not. The main themes explored in the study include profiling and demographics of the schools, the state of sanitation facilities and water infrastructure, operation and management of sanitation facilities and public health issues. The study also aims to provide an insight into service delivery challenges and includes success stories where partnerships have been involved. The study draws from theories that link water and sanitation to public health, child development and gender based on the human rights principles. Literature on various forms of institutional arrangements is explored in order to understand the regulatory framework upon which service delivery is based. The main findings indicated that sanitation facilities in the rural schools are generally poor unless there has been some type of intervention. Although it is the municipality’s responsibility to ensure potable water is supplied at a local level, these services are often not provided. Service delivery seems to be very slow for most schools. Stakeholder involvement has been at the level of providing infrastructure for the schools, whereas operations and maintenance has remained the responsibility of schools. There are still huge challenges for the government to improve service delivery in schools especially those in the rural areas. / Thesis (M.A.)-University of KwaZulu-Natal, Durban, 2009.