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1
Madiba, Jeremia Sello. "Factors influencing food consumption patterns in selected communities in Limpopo province, South Africa." Diss., University of Pretoria, 2006. http://hdl.handle.net/2263/31192.
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Little is known about food consumption patterns of the majority of the black population and the various factors influencing food consumption patterns. An understanding of the above aspects is critical for any business enterprise to inform the formulation of a marketing strategy. This study is an attempt to identify factors affecting food consumption patterns of three ethnic groups found the Limpopo Province. The province is unique in that it is the only province in South Africa that has a variety of ethnic groups. Various factors are considered and examined to determine how they affect food consumption patterns. These are income, religion, culture and cultural practices, and distance from town. Factors such as gender, patriotism, different life styles and age are mentioned but no emphasis is given to them. The ethnic groups included in the study are Bapedi, Shangaans and Vhavenda. Though Whites and Indians could have been included, their number is too insignificant to warrant determining the effect they might have on consumption patterns in the province. Analysis of Variance (ANOVA) and Chi-Square techniques were used to analyse the different relationships. The findings show that income is a significant factor influencing food purchases and the frequency of purchase. Religion was found to be significant in influencing slaughtering of chickens but not in the slaughtering of sheep, goats and cattle. The effect of staying in a rural or urban area did not show any significance as this was played down by the establishment of shopping malls after 1994. The study also reveals the significance of indigenous food on the ethnic groups. The study also showed the importance of the influence of religion, especially of the Zion Christian Church in certain parts of the Limpopo Province.Dissertation (MInst(Agrar))--University of Pretoria, 2006.
Agricultural Economics, Extension and Rural Development
MSc
Unrestricted
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Sigonyela, Vuyolwethu. "Towards understanding the groundwater dependent ecosystems within the Table Mountain Group Aquifer: a conceptual approach." Thesis, University of the Western Cape, 2006. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_9454_1183462560.
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Understanding of Groundwater Dependent Ecosystems (GDEs) and their extent within the Table Mountain Group (TMG) aquifer is poor. To understand the dependence to basic ecological and hydrogeological concepts need explanation. The use of current literature aided in identification and classification. From the literature it has come clear that groundwater dependence centers around two issues, water source and water use determination. The use of Geographical Information System (GIS) showed its potential in proof of water sources. Rainfall data and a Digital Elevation Model (DEM) for the Uniondale area have been used to do watershed delineation, which is in line with locating GDEs on a landscape. Thus the conceptual approach should be a broad one that sets a basis for both investigation (scientific research) and institutional arrangements (management).
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Netili, Khangweleni Fortress. "A preliminary understanding of deep groundwater flow in the Table Mountain group (TMG) aquifer system." Thesis, University of the Western Cape, 2007. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_3671_1194349953.
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The Table Mountain Group (TMG) Aquifer is the second largest aquifer system in South Africa, after dolomites. This aquifer has the potential to be a signinficant source of water for the people of the Western Cape. The occurrence of hot water springs in the TMG in relation with the main geological fault systems in SOuth Africa shows that deep flow systmes do exist. Little is known about these deep aquifer systems in South Africa (i.e. flow mechanisms). To close the above-mentioned knowledge gap, this study was initiated. The current study gave a review of some of the aspects that needs to be considered when distinguishing deep groundwater from shallow groundwater.
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Masekoameng, Mosima. "Indigenous knowledge systems in food gathering and production in selected rural communities in Sekhukhune District of the Limpopo Province." Thesis, University of Limpopo, 2007. http://hdl.handle.net/10386/1836.
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Kamffer, Dewald. "Community-level effects of fragmentation of the afromontane grassland in the escarpment region of Mpumalanga, South Africa." Connect to this title online, 2004. http://upetd.up.ac.za/thesis/available/etd-11242004-104932.
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Parker, Daniel Matthew. "The effects of elephants at low densities and after short occupation time on the ecosystems of the Eastern Cape Province, South Africa." Thesis, Rhodes University, 2008. http://eprints.ru.ac.za/1330/.
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Baloi, Votumi Arone. "Community perceptions and attitudes towards integrated wildlife/livestock land-uses : the case of Greater-Giyani rural communities, Limpopo, Province." Thesis, University of Limpopo, 2016. http://hdl.handle.net/10386/1515.
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Thesis (M. Sc. (Agricultural Economics)) -- University of Limpopo, 2016Livestock production in communal areas is faced by a myriad of challenges such as environmental degradation, poor markets, stock theft and disease. This has drawn interest towards wildlife-based land-use practices as an alternative or complement to livestock production. Wildlife-based land-uses have potential to generate incomes and create employment in wildlife rich areas. On the other hand, several problems such as human-wildlife conflict have been identified in wildlife rich areas. This study investigated perceptions of rural households in areas adjacent to the Kruger National Park (KNP) regarding integrated wildlife/livestock land-use practices. Data were collected from 130 households in nine villages alongside KNP in Giyani. Respondents were stratified into cattle owning households and non-cattle owning households, to determine differences in perception towards wildlife. Chi-square and Cramer`s V tests were used to test if there is an association and relationship between the households` opinion and cattle ownership. For empirical analysis, factor analysis and multinomial logistic regression models were run with SPSS. Attitudes and perceptions were analysed by the Likert-scale numbered from 1 to 4. High scores (i.e. 3 and 4) indicated negative attitudes and low scores (i.e. 1 and 2) indicated positive attitudes. The factor analysis managed to reduce the number of attitude variables fitted into the model from 29 to 9 factors (components), that were used in the multinomial logit model analysis. Results from the multinomial regression indicated that demographic factors such as age, gender, education, occupation, marital status, monthly income and cattle ownership had a significant impact in distinguishing between pairs of groups and the contribution which they make to change the odds of being in one dependent variable group rather than the other. Results from factor analysis (component variables or factors) also had a significant impact on the dependent variables when applied to multinomial logit regression. About 59% of the sampled households showed positive attitudes towards integrated wildlife-based land-use practices, and indicated willingness to participate in it. Those who had negative attitudes and were not likely to participate were 13%; and those who were uncertain on whether or not to participate were 28%. Looking at the results of the empirical analysis derived from regression analysis through multinomial logit, several factors were found to have influenced whether or not households were likely to participate in the integrated wildlife/livestock land-uses. Variables: damages caused by wild animals on crops and vegetables; giving land and stopping farming to allow for wildlife conservation; roles and opportunities of wildlife in the community; roles and opportunities of livestock in the community; age of household head; occupation of household head; gender of household head; cattle ownership; Access to market, income earned from sale of livestock, and state of grazing area, were found to be significant (at different significant levels 1%, 5% and 10%) in determining whether or not households were likely to participate in the integrated wildlife/livestock land-uses. However, variables: Government support and the number of people benefiting from livestock, Interest in wildlife protection, Relationship between wildlife, human and domestic animals and land ownership were found to be insignificant in determining whether or not households were likely to participate in the integrated wildlife/livestock land-uses. Most of the households showed interest in participating in wildlife-based land-uses irrespective of whether or not they own cattle. Some households indicated dislike of the proposed land-use practice, mainly those who practiced cattle and crop production, as they perceived wild animals as a high risk to their stock. However, this negative attitude can be managed if benefits to households and community are clearly defined and compensation for loses from wildlife are made a priority. Cooperation of all stakeholders (for example, community, government, conservationists and foreign donor’ agencies) is recommended for implementation of wildlife-based land-uses.
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Hlungwani, Hlulani Archebold. "Impact of oncorhynchus mykiss, salmo trutta and clarias gariepinus on aquatic communities within Magoebaskloef Area, Limpopo Province, South Africa." Thesis, University of Limpopo, 2016. http://hdl.handle.net/10386/1573.
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Thesis (M. Sc. (Agriculture)) -- University of Limpopo, 2016Fish assemblages in relation to environmental variables within the Broederstroom and Debengeni Rivers were investigated. Both rivers were characterized by coarse substrates (pebble and gravel), temperatures below 20°C and moderate depth. Trout dominated fish assemblages in terms of numbers caught and was only distributed at higher altitude sites >1400 m (a.s.l). Coarse substrates, temperatures below 15°C, flow rate, depth and riparian cover were the variables shown important for the distribution of trout by multivariate analysis. The confinement of the trout to higher altitude and lack of optimal habitat variables at lower altitude sites contributed to the assertion that the area is marginal for trout distribution. It was therefore inferred that the marginality of the area is the possible explanation for trout failure to self-sustain its population, therefore dependent on the continuous restocks by the local hatchery. The continuous restocks of small size trout in the Broederstroom River prompted a subsequent study where trout’s impact on macroinvertebrate communities was evaluated through surveys and field experiments. The ability of small trout to utilize macroinvertebrates made them suitable candidates to evaluating their impact in the area. Aquatic invertebrates were found to be the main food source for the trout in the area. Taxa such as Gomphidae and Potamonautidae were the most frequent food items from the analyzed stomachs of trout. However, observations from both field surveys and experiments showed that trout is a weak regulator of macroinvertebrate diversity in the area, since there were no significant differences (ANOVA, P<0.05) in the diversity of invertebrates from trout invaded and uninvaded sites. Trout being a weak regulator of macroinvertebrate diversity in the area, it prompted surveys to the Ebenezer Dam to determine its competitive interactions with native predatory species. If the introduced species is a more efficient predator than the native predator species, it may affect changes in the structure of the habitat and food resource. Trout in the Ebenezer Dam was found to be selective to habitat variables whilst C. gariepinus was cosmopolitan to all habitat categories. The catfish also had a broader food preference than trout and the diversity of the food items was significantly different (ANOVA, P<0.05) between the two species. Unfortunately, the interspecific food overlap between trout and the catfish could not be determined in Ebenezer Dam, because of the small sample size of trout but food selection between vii them was evident. It was then concluded that the native catfish has a wider niche and it is a more efficient predator than the introduced trout. This observation contributed further to the assertion that the area is marginal for trout to thrive. Due to trout selection of habitat variables, it became prudent to carry out another study where the past climate and land use changes were analyzed to determine their effect on the habitat that could have affected the distribution of trout in the area. Future projections were also made to determine possible future impacts of climate change on the distribution of trout in the area. The effects of climate and land use change resulted in warmer water temperature, altered riparian cover and altered stream flow patterns. The changes could have influenced the confinement of trout to higher altitude catchments. The projected maximum temperatures by 2050 shows an increase from 2014 with a decline in precipitation. If these projections are to be the same for water temperature and flow regimes, coupled with current land uses in the area, they will continue to affect the distribution of trout negatively.
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De, Moor Irene J. "Methods for assessing the susceptibility of freshwater ecosystems in Southern Africa to invasion by alien aquatic animals." Thesis, Rhodes University, 1994. http://hdl.handle.net/10962/d1005145.
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Two methods for predicting regions susceptible to invasion by alien aquatic animals were developed for southern Africa (excluding Zimbabwe and Mozambique). In the "traditional" (data-poor) approach, distributions of three categories of alien "indicator" species (warm mesothermal, cold stenothermal and eurytopic) were compared to seven existing biogeographical models of distribution patterns of various animals in southern Africa. On the basis of these comparisons a synthesis model was developed which divided southern Africa into seven regions characterised by their susceptibility to invasion by alien aquatic animals with particular habitat requirements. In the "data-rich," geographic information systems (GIS) approach, the distribution of trout (Oncorhynchus mykiss and Salmo trutta) in selected "sampled regions" was related to elevation (as a surrogate of water temperature) and median annual rainfall (MAR) (as a surrogate of water availability). Using concentration analysis, optimum conditions for trout were identified. Regions within a larger "predictive area" which satisfied these conditions, were plotted as a digital map using the IDRISI package. Using this method seven models of potential trout distribution were generated for the following regions: northern Natal (two); southern Natal/Lesotho/Transkei (three), eastern Cape (two) and western Cape (two). Since two of the models were used to refine the methods, only five models were considered for the final assessment. In a modification of the GIS method, another model of potential trout distribution, based on mean monthly July minimum air temperature and MAR parameters, was developed for the region bounded by 29º - 34º S and 26 º - 32°E. This model showed marked similarities to another model, developed for the region bounded by 29 º - 32°S and 26º - 32°E, which was based on elevation and MAR parameters. The validity of the models developed was assessed by independent experts. Of the six models considered, four received favourable judgements, one was equivocal and one was judged to be poor. Based on these assessments it was concluded that the GIS method has credibility and could be used to develop a "data-rich" model of the susceptibility of southern Africa to invasion by alien aquatic animals. This method represents an alternative to the bioclimatic matching approach developed by scientists in Australia. The GIS method has a number of advantages over the "traditional" method: it is more amenable to testing, has greater flexibility, stores more information, produces images of a finer resolution, and can be easily updated. The traditional method has the advantage of being less expensive and requiring a less extensive database.
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Mathoho, Ndivhuho Eric. "Archaeology and archaeometallurgy in Limpopo province of South Africa: case studies of early iron age sites of Mutoti and Thomo." Doctoral thesis, Faculty of Science, 2021. http://hdl.handle.net/11427/33794.
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Decades of archaeological research have established the chronology of the history of culture by farmers in northern South Africa from the beginning of the first millennium AD to the recent past (1900). This thesis sought to explore the archaeology and archaeometallurgy of the early inhabitants of the Lowveld region. Rigorous methodological and theoretical approaches, which include Ethno-Historical, archaeological and archaeometallurgical studies, were employed to acquire the relevant information required to address research problems. Ceramic typology and settlement pattern studies were used to establish the culture-history to contextualise Iron Age sites, while Optical Microscopy, X-Ray Fluorescence analysis (XRF) and Scanning Electron Microscopy (SEM) were used to investigate the metallurgical remains to understand metal production technology. Both Mutoti and Thomo sites share several similarities, namely, they are situated near the perennial streams, the presence of metal-production sites and the predominant pottery types, consisting of short and long neck vessels dominated by comb stamping, incision and punctate decorations on the rim, neck and shoulder of the vessels. Ceramic tradition analysis revealed that both Mut 2 and Thomo combine ceramic designs and attributes that appeared in the region near the beginning of the first Millennium AD, that is the Urewe and the Kalundu traditions. Garonga Phase tradition developed from the Urewe tradition which represent the first facie, represented by the Silver Leaves sites of the Kwale branch ceramic tradition which dates to AD 280- 420 and the Kalundu tradition (which starts from Happy Rest and progresses to Diamant - Phase 2) which dates from the sixth century AD, both traditions share distinctive ceramics styles and decoration attributes (Burrett, 2007; Huffman, 2007). The radiocarbon-based chronology suggests that Mut 2 and Thomo sites were occupied contemporaneously and dated to AD 650-850. Analysis of the distribution of materials objects across Mut 2 site revealed active participation in both local and international trade network (Soapstone and Islamic ceramics) operated at a village status. Some of the craft production related evidence include metal production, eggshell beads and cloth manufacturing. Metal production was regarded as signature of power and authority in Iron Age period (Herbert, 1996). More research may strengthen this observation.
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Sithavhakhomu, Thilivhali Simon. "Challenges facing local communities in utilising and sustaining indigenous medicinal plants in the Thengwe village of Limpopo Province." Thesis, University of Limpopo (Turfloop Campus), 2012. http://hdl.handle.net/10386/827.
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Thesis (M.Dev.) --University of Limpopo, 2012The main aim or purpose of this study was to look at the ways and the strategies of minimizing\ mitigating the over-harvesting of indigenous medicinal plants in order to use them sustainably. The task of identifying and assessing challenges facing local communities in utilizing and sustaining indigenous medicinal plants in Thengwe village and their implications on environmental conservation and management of natural resources was done during the pilot survey. The environmental field survey was conducted after gaining permission to enter into the identified study areas including the Mutavhatsindi Nature Reserve. The result revealed that most of the indigenous medicinal plants are used for healing, religious, economical and for protection purposes. Most of the indigenous medicinal plants in the study area are depleted and many of them are facing extinction. The study was qualitative in design. Semi-structured interviews and a questionnaire were used. The questionnaire had both open-ended and closed questions. The study area was Thengwe Village in the Mutale Municipality. The existence of medicinal plants is threatened by people `s perceptions and attitudes towards them. For some indigenous medicinal plants, depletion is at a high rate due to over-harvesting and because the plants when traded by herbalists they have a premium price attached to them. Interestingly, perhaps surprisingly, the majority of young people hold negative attitudes towards the indigenous medicinal plants due to poor knowledge of the value of indigenous medicinal plants, in contrast to the elders who appreciate their role and consider them as part of their culture, economy and religion. One of the findings is that medicinal plants were found to be important to the community members as the source of income and creation of jobs for the medicinal collectors who sell the species to traditional healers. For the reason of preserving indigenous medicinal plants and others as the environmental resources, this study recommends that there should be strong intergovernmental relationships between the National, Provincial and Local governments in order to prevent over-harvesting of the medicinal plants. The indigenous medicinal plants are equally important to biodiversity students and researchers who want to study and research indigenous medicinal plants which play an important role in the improvement of the livelihoods of community members. Furthermore, education campaigns within the communities and school learners are recommended to encourage the prevention, sustainability and utilization of the indigenous medicinal plants. Additionally, the legal authorities should be empowered to prosecute all people who may be found illegally in possession of indigenous medicinal plants, as well as endangered and protected species. Heavy fines and charges should be imposed on such culprits. Of importance is the fact that the results and recommendations of this study may facilitate the teaching of environmental education and management of natural resources as well as boost the local economy of the Vhembe district Municipality by showing that medicinal plants in the area can be seen as a viable tourist attraction.
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Setumu, Tlou. "Communal identity creation among the Makgabeng rural people in Limpopo Province." University of Limpopo, 2010. http://hdl.handle.net/10386/586.
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Thesis (Ph.D. (History)) --University of Limpopo, 2009Key to this study is the history of Makgabeng, mainly focusing on creation of rural communal identities in that area. Defining identity will be an important aspect for this study in which a deduction will be made on how the Makgabeng communities viewed themselves and were also viewed by those outside their area. The various aspects which shaped and led them to view themselves and be viewed that way over time will all be explained. The history of Makgabeng was never included in the mainstream just like the history of most of the previously marginalised communities in South Africa. The early history of such communities was documented by Europeans, while those communities did not participate in the production of their own histories and the history of South Africa in general. The history of indigenous communities has been told from the other people’s perspectives resulting in huge gaps as well as distorted, prejudiced and subjective accounts of the past. The past of these indigenous communities was mostly preserved in oral traditions and oral history. Therefore, one of the principal aims of this study is to work towards filling the gaps as well as attempting to rectify distortions and myths prevailing in the current texts which were made by authors alien to the indigenous people.
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Nobukhosi, Maphophi Nandi. "Effects of teenage motherwood while at secondary school in rural communities of the Capricorn District, Limpopo Province." Thesis, University of Limpopo, 2014. http://hdl.handle.net/10386/1402.
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Thesis (M.Cur.) -- University of Limpopo, 2014The purpose of this study was to explore effects of teenage motherhood on the secondary education of the female learner. A qualitative research method and a descriptive, exploratory research design were adopted to undertake the study. Five one-on-one interviews were conducted and the data was analysed by using Tesch’s method of analysis. Three themes and nine sub-themes were generated from the analysed data. The research findings indicate that teenage motherhood does not have a negative effect on the ability of the learner to continue attending school, but also suggest that the various challenges experienced by the learner do have adverse effects on her school performance and ultimate decision to suspend school. There were other factors that influenced her academic performance and decision to continue or suspend school attendance; namely family support, experiences at school, as well as the cultural beliefs, traditions, and perceptions of the society she was living in. Key concepts: Teenage motherhood, effects, secondary education.
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Martin, Grant Douglas. "Drivers of macrophyte assemblages in South African freshwater systems." Thesis, Rhodes University, 2013. http://hdl.handle.net/10962/d1004127.
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Potentially damaging submerged invasive freshwater macrophytes have been identified in South African freshwater systems, but have received less attention than their floating counterparts. To ascertain the changes and effects that these species may have on macrophyte ecology, an understanding of the drivers of macrophyte assemblages is essential. The aims of this thesis were to investigate select abiotic and biotic factors driving introduction, establishment and spread of submerged macrophytes in South Africa. Surveys on the status of submerged plant species in South Africa were conducted to find out the distribution and diversity of the species present, imported to, and traded in South Africa. Numerous submerged indigenous and invasive macrophyte locality records were collected during field surveys, of which many were first time records. Pet stores and aquarist trading activities were identified as potential vectors for the spread of submerged macrophytes through online surveys and personal interviews. These results highlighted the potential these species have for continuing to enter, and spread within South African water bodies. Maximum Entropy (MAXENT) is a general-purpose method used to predict or infer distributions from incomplete information, and was used here to predict areas suitable for the establishment of five of these invasive macrophytes. Many systems throughout South Africa, particularly those in the subtropical coastal regions, were found to be climatically suitable for the establishment of Elodea canadensis Michx., Egeria densa Planch., Hydrilla verticillata (L.f.) Royle (all Hydrocharitaceae), Myriophyllum spicatum L. (Haloragaceae), and Cabomba caroliniana Gray (Cabombaceae). Despite the high probability of invasion, facilitated by vectors and suitable climate, South Africa’s rich indigenous submerged aquatic flora may be preventing the establishment of these submerged invasive species. Studies on the competitive interactions between a common indigenous submerged macrophytes, Lagarosiphon major (Roxb.) (Hydrocharitaceae) and M.spicatum, an invasive native to Eurasia, were conducted to ascertain which conditions influence competitive superiority. High sediment nutrient conditions significantly increased the growth rate and competitive ability of both species, while clay sediments significantly increased the competitive ability of L. major over M. spicatum, but sandy sediments improved the competitive ability of M. spicatum. These results highlighted the dynamic changes in competition between submerged species driven by abiotic factors, but did not take into consideration the effect that herbivory, a biotic factor, could have on competition between the two species. The effect of herbivory by phytophagous insects of submerged plant species has been regarded as negligible. To find out what this effect is, multiple field surveys were undertaken throughout South Africa to find natural enemies of indigenous Lagarosiphon species with the aim of identifying such species, and quantifying their influence on plant growth dynamics. Several new phytophagous species were recorded for the first time. An ephydrid fly, Hydrellia lagarosiphon Deeming (Diptera: Ephydridae) was ascertained to be the most ubiquitous and abundant species associated with L. major in South Africa. The influence of herbivory by this fly on the competitive ability of L. major in the presence of M. spicatum was investigated using an inverse linear model, which showed that herbivory by H. lagarosiphon reduced the competitive ability of L. major by approximately five times in favour of M. spicatum. This study served to highlight the importance of herbivory as a driver of submerged aquatic plant dynamics. Current ecological theory emphasises the importance of investigating beyond plant-herbivore interactions, by including multitrophic interactions in community dynamics. Therefore, the potential of parasitism by a parasitoid wasp, Chaenusa luteostigma sp. n. Achterberg (Hymenoptera: Braconidae: Alysiinae) on H. lagarosiphon to shift the competitive interactions between the two plant species was also examined. The addition of the parasitoid reduced the effect of herbivory by the fly on L. major by half, thereby shifting the competitive balance in favour of L. major over M. spicatum. This study provides valuable insight into a selection of drivers of submerged macrophyte assemblages of South Africa. It highlights the precarious position of South African freshwater systems with regard to the potential invasion by damaging submerged invasive species. It also provides interesting insights into the effect of competition, herbivory and parasitism on the establishment and spread of species within submerged freshwater systems. Understanding the different influences could assist managers and policy makers to make validated decisions ensuring the integrity of South African freshwater systems.
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Njozela, Cuma. "The role of the sandprawn, Callichirus kraussi, as an ecosystem engineer in a temporarily open/closed Eastern Cape estuary, South Africa." Thesis, Rhodes University, 2013. http://hdl.handle.net/10962/d1001539.
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The role of the sandprawn, Callichirus (=Callianassa) kraussi (Stebbing), as an ecosystem engineer was assessed in the lower reach of the temporarily open/closed Kasouga Estuary situated along the Eastern Cape coastline of southern Africa over the period April 2010 to June 2011. The study comprised two distinct components, a field study and a caging experiment. The field study assessed the correlation between sand prawn densities and selected physico-chemical (organic content of the sediment and bioturbation) and biological (microphytobenthic algal concentrations and macrobenthic abundance and biomass) variables in 50 quadrants in the lower reach of the estuary. Densities of the sand prawn within the quadrants ranged from 0 to 156 ind m⁻² (mean = 37 ind m⁻²). There were no significant correlations between the densities of the sandprawn and the estimates of the organic content of the sediment and the abundance and biomass of the macrofauna (P > 0.05 in all cases). Numerical analyses failed to identify any effect of the sandprawn density on the macrofaunal community structure. The rate of bioturbation was, however, strongly correlated to the sand prawn density. Similarly, the microphytobenthic alga concentrations were significantly negatively correlated to the sand prawn densities ((P < 0.05). The absence of any distinct impact of the sandprawn on the macrobenthic community structure appeared to be related to their low densities in the lower reach of the estuary during the study. To better understand the role of the sandprawn as an ecosystem engineer, a caging experiment was conducted using inclusion and exclusion treatments (n= 5 for each treatment). Densities of the sandprawn in the inclusion treatments (80 ind m⁻²) were in the range of the natural densities within the estuary. The experiment was conducted over a period of 18 weeks in the lower reach of the estuary during summer. The presence of the sandprawn, C kraussi, contributed to a significant decrease in the microphytobenthic algal concentrations and the abundance and biomass of the macrofauna (P < 0.05 in all cases). The decrease in the microphytobenthic algal concentrations in the presence of the sandprawn appeared to be related to the res-suspension of the sediments (bioturbation) generated by the burrowing and feeding activities of the sandprawn. The observed decrease in macrofaunal abundances and biomass in the inclusion treatments appeared to be mediated by both the decreased food availability (mainly the microphytobenthic algae) and the burial of organisms within the sediments. Numerical analysis indicated that the sandprawn did, however, not contribute to a change in the species composition of the macrofauna. Results of the current study indicate that C.kraussi plays an important role in structuring the invertebrate community and energy flow within temporarily/open closed Kasouga Estuary.
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Mogashoa, M. E. "Seasonal variation in haematological parameters and oxidative stress bio-markers for selected fish species collected from the Flag Boshielo Dam, Olifants River System, Limpopo Province, South Africa." Thesis, University of Limpopo, 2015. http://hdl.handle.net/10386/1188.
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Thesis (M.Sc. (Physiology)) --University of Limpopo, 2015Water is an essential and yet scarce resource, which has a vital role for human use and also serve as a habitat for numerous organisms in aquatic environments. Despite its scarcity there have been many reports indicating that it is continually polluted by domestic, agricultural, mining and other anthropogenic activities; subsequently affecting the health of organisms residing in such water bodies. Fish have been selected as the bio-monitoring species due to its direct interaction with the environment; thereby making it an appropriate model to monitor and evaluate the health status of the environment. The feral population of the alien species, Hypopthalmichtys molitrix (Valenciennes, 1844) commonly known as the silver carp in Flag Boshielo Dam has been considered a healthy population. However, this perception changed considerably after reports of lethargic, dying fish were first noted in 2011. Currently the sporadic deaths amongst mature specimens (>0.7m) persist; and the reason(s) for their demise remains unclear. Therefore, the aim was to employ a seasonal study design to investigate the health status of selected fish species such as H. molitrix in Flag Boshielo Dam by evaluating haematological parameters, oxidative stress biomarkers and bio-accumulation levels of particular transition metals. Seasonal surveys were carried out from February 2012 to January 2013 at Flag Boshielo Dam, Olifants River System, Limpopo Province. The locality surrounding the dam is known to be in an agriculture and mining catchment. Hypopthalmichtys molitrix and Labeo rosae (Steindachner, 1894) commonly known as the rednose labeo were collected with the use of scoop nets, conventional angling gear and gill nets. Following collection, morphometric measurements were taken and blood was collected. The blood samples required for further analysis at the Medical Science Department, University of Limpopo were kept on ice (4˚C). After the collection of all blood samples the specific fish was sacrificed and muscle samples were collected for bio-accumulation analysis and gills and liver samples were collected for the measurement of oxidative stress biomarkers. These tissue samples were rapidly frozen and kept frozen (-85˚C) until further analysis. Haematological parameters from the study reflected a variation amongst comparison of the inter- and intra-species. It was observed that mature H. molitrix suffered from anaemia. The response of glutathione-S-transferase (GST) and thiobarbituric acid reactive substances (TBARS) was relatively constant throughout all seasons when the young (<0.5m) and mature H. molitrix (0.6 – 0.90m) specimens were compared. However, the catalase (CAT) response of mature H. molitrix was dramatically impaired. This would increase their vulnerability to oxidative stress. Bioaccumulation levels of the eleven selected transition elements exhibited various trends. Metals such as Molybdenum (Mo), Vanadium (V), (Chromium) Cr, Cobalt (Co), Zinc (Zn), Cadmium (Cd) and Mercury (Hg) exhibited seasonal bio-accumulation levels that were in support of the various feeding behaviours of the fish species in this study. On the other hand, metals such as Manganese (Mn), Iron (Fe), Copper (Cu), Zinc (Zn), Cadmium (Cd) and Mercury (Hg) also illustrated the potential to be contributing factors in the death of the mature specimens. In conclusion, the findings from this study illustrate the complex nature of metabolic disturbances resulting in the death of mature H. molitrix specimens. It is clear that no single aspect investigated in this study could be solely implicated as the major cause of death. This multifactorial presentation necessitates further haematological assessment focussing on blood cell morphology and pathology, as well as investigations into other oxidative stress biomarkers in liver and gill tissue. In addition, identifying the most appropriate tissue type for future bio-accumulation measurements of transition metals in this feral population is necessitated. It is further suggested that neuro-muscular assessments, focussing on neurotransmitters such as γ-aminobutyric acid (GABA) and acetylcholine (Ach), form part of the investigation into the lethargic behaviour of the mature fish.
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Mothapo, Raesibe Anna. "Analysis of government compliance in the provision of water and sanitation to rural communities: a case study of Lepelle Nkumpi local municipality, Limpopo province." University of Western Cape, 2020. http://hdl.handle.net/11394/7371.
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Masters in Public Administration - MPAA persistent challenge facing especially post-apartheid South African rural municipalities is service delivery compliance. Under the guise of scarcity, rural municipalities repeatedly do not comply with legislation, policies and guidelines for the provision of drinking water and basic sanitation services for the poor. Yet, such challenges concern equity, justice and fairness to social policy and seriously impact the sustainability of livelihood of millions of rural households. The main objective of this study is to analyse the extent to which Lepelle Nkumpi Local Municipality has complied with or deviated from specific policies and legislation governing the provision of water and sanitation services at the Gedroogte, Ga Molapo and Magatle (in Zebediela) rural communities and the response of communities. The study was also intended to determine the extent to which water challenges affect the livelihood of the people in the communities. It highlights the refugee-like conditions that millions of South African citizens experience despite official statistics that claim that 86% of the country has access to potable water. A mixed methods design was used for this analysis. The qualitative methods that are used in the study include use of in-depth interviews, site visits, personal stories and the Municipal Integrated Development Programme (IDP). Participatory mapping of water sources; story-telling about water issues; timelines and trend lines by focus group members; transect walks and 7 key informant interviews were used to collect data. A total of 657 quantitative interviews were conducted in three communities. Service delivery compliance has been grossly ineffective and inefficient in Lepelle Nkumpi Local Municipality, especially in the Gedroogte, Ga Molapo and Magatle rural communities. The findings were that these rural communities still depend on state-owned boreholes for accessing drinking water, which are regularly broken and/or in disrepair. Sanitation service provision in the rural communities does not comply with the approved policy of providing ventilated improved pit (VIP) toilets. New settlements have increased the demand for clean water. Shortages of staff with relevant skills such as management, technicians, and administrators are one of the main reasons why there is a scarce supply of drinking water and basic sanitation services at the Gedroogte, Ga Molapo and Magatle communities. Inaccessibility to nearby treatment plants for waste disposal services (situation per community) and inaccessible disposal facilities and the use of disposal sites also affect the health conditions of community members within the Lepelle Nkumpi Local Municipality.
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Ramalivhana, J., CL Obi, MNB Momba, B. Onabolu, JO Igumbor, M. Lukoto, TB Mulaudzi, et al. "Antibiotic resistance profiles and relatedness of enteric bacterial pathogens isolated from HIV/AIDS patients with and without diarrhoea and their household drinking water in rural communities in Limpopo Province South Africa." African Journal of Biotechnology, 2007. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1001720.
Full textAbstract:
Antibiotic resistance profiles and the correlation of enteric bacterial pathogens from HIV positive individuals
with and without diarrhoea and their household drinking water were determined using the Kirby
Bauer disk diffusion and polymerase chain reaction methods respectively. The sef gene of Salmonella
enteritidis was amplified with the primer pair sefA-1 and sefA-2. The fliC gene of Salmonella typhimurium
was amplified with the primer pair flicA-1 and flicA-2. Heat-labile toxin (LT) primers (Lta and LTb) were
used to amplify Escherichia coli isolates and VirA1 and VirA2 for the Vir A gene of Shigella dysenteriae.
Results of antibiotic resistance profiles of enteric bacterial pathogens isolated from stool samples of HIV
positive and negative individuals with and without diarrhea and their household drinking water showed
very similar drug resistance patterns. Over 90% of all the organisms isolated from the various study
cohorts showed resistance to penicillin, cloxacillin and amoxicillin. Conversely, almost all the organisms
were sensitive to ciprofloxacin, gentamycin, meropenem and imipenem. About 50% of E. coli isolated
from the various study cohorts showed multiple antibiotic resistance to penicillin, amoxicillin, ampicillin,
erythromycin, tetracycline, doxycycline and cotri-moxazole ( PR, AR, APR, ER, TR, DXTR, and TSR ) whereas
less than 10% resistance was consistently reported for ofloxacin, gentamycin, meropenem cefotaxime,
cefuroxime and imipenem ( OFXS, GMS, MEMS, CTXS, CXMS and IMIS ). The majority of Salmonella and
Shigella isolates from all the groups were sensitive to ciprofloxacin, gentamicin, amikacin, meropenem,
imipenem, nalidixic acid, kanamycin, piperacillin-tazo bactam, cefuroxime, doxycyclin, cefepime and
ceftazidime (CIPS, GMS, AKS, MEMS, IMIS, NAS, KNS, DXTS, CXMS, CPMS, CAZS and PTZS). For
Campylobacter, over 30% of the isolates were resistant to erythromycin, ampicillin, tetracycline,
cotrimoxazole and ceftazidime (ER, APR TSR and CAZR) whereas over 85% were susceptible to
ciprofloxacin, ofloxacin, gentamycin, amikacin, mero-penem, and nalidixic acid (CIPS, OFXS, GMS, AKS,
MEMS and NAS). In addition to penicillin, amoxicillin, ampicillin and erythromycin, Aeromonas and
Plesiomonas spp were more resistant to chloramphenicol, but were susceptible to ciprofloxacin,
gentamycin, amikacin, meropenem, imipenem and nalidixic acid (CIPS, GMS, AKS, MEMS, IMIS and NAS).
Polymerase Chain Reaction (PCR) experiments using targeted species genes of S. enteritidis, S.
typhimurium, E. coli, Sh. dysenteriae showed that isolates from stool samples of HIV positive and HIV
negative individuals with and without diarrhoea were also present in the household drinking water of the
same study cohorts, suggesting that drinking water may have been the sources of the organisms in stool
sample. Furthermore, by showing that the primers were able to amplify the genes in both clinical and
environmental isolates, the link between the virulence of the pathogens was established
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Henning, Barend Johannes. "The relevance of ecosystems to ecotourism in the Waterberg Biosphere Reserve." Thesis, 2003. http://hdl.handle.net/2263/27503.
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Muluvhahothe, Mulalo Meriam. "A functional and trait-based approach in understanding ant community assembly in the Soutpansberg Mountains, South Africa." Diss., 2018. http://hdl.handle.net/11602/1116.
Full textAbstract:
MSc (Zoology)Department of Zoology
The concept of taxonomic diversity has been widely used to investigate diversity patterns and the mechanism underlying community assembly. However, functional and trait diversity can further explain the factors driving community assembly because they capture different aspects of species ecological roles such as habitat requirements and resource use. To investigate the factors shaping community assembly along the elevational Soutpansberg transect, ants were used as a model study organism because they are widely distributed geographically, ubiquitous and play several important roles in ecosystems. Functional and taxonomic diversity patterns along the elevation, their drivers (seasonality, soil properties, temperature and habitat structure) were examined using a long-term dataset (8 years) collected seasonally. Morphological and physiological traits at a community level are quantified and their relationship to temperature, soil properties and habitat structure modelled. Traits were used to test the size-grain hypothesis, Janzen’s rule and Brett’s rule. Functional and taxonomic diversity had a humped-shaped pattern on the northern and a decreasing pattern on the southern aspect. However, taxonomic diversity did not decrease monotonically on the southern aspect. Functional diversity was mainly related to habitat structure and temperature while taxonomic diversity was explained by seasonality, soil properties and temperature. Functional and taxonomic diversity were positively related at a larger scale but habitat specific at a smaller scale. Taxonomic diversity explained more variation in functional diversity than habitat structure and their interactions. The results supported the size-grain hypothesis and Janzen’s rule but not the Brett’s rule. Patterns in taxonomic and functional diversity mirrored each other but were the result of different mechanisms. Temperature was however important for both measures. Incorporating functional diversity analysis into taxonomic diversity contributed significantly in understanding the different mechanisms underlying community assembly along the Soutpansberg transect. This together with trait responses to environmental variables such as a decrease in size with increased temperature could be used to model the responses of ant communities to global change drivers such as climate and land use change
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"An assessment of the effects of small-scale farming on macro-invertebrate and diatom community structure in the Vhembe District, Limpopo." Thesis, 2015. http://hdl.handle.net/10210/13838.
Full textAbstract:
M.Sc. (Zoology)The Limpopo Province covers an area of 12.46 million hectares and these accounts for 10.2 per cent of the total land area of the Republic of South Africa. The province is endowed with abundant agricultural resources and it is one of the country’s prime agricultural regions noted for the production of fruits and vegetables, cereals, tea, and sugar. A key feature of the agricultural industry of Limpopo Province is its dualism. There are two distinct types of agricultural production systems. The large scale commercial farming system occupies approximately 70% of the total land area. The smallholder farms are located mostly in the former homeland areas and they cover approximately 30% of the provincial land surface area. The town of Thohoyandou, with its surrounding villages, is the area of greatest human concentration in the Luvuvhu Catchment and subsistence farming is about a third of the total agricultural component. It is important to study the effects of agricultural inputs (e.g. fertilizers and sediment loads) on aquatic ecosystems in order to fully understand the processes involved of these stresses on aquatic ecosystems. Knowledge of these impacts toward the environment and human health is often limited due to lack of capacity building, especially among small scale farmers. Ten bio-monitoring sites were studied on five systems in the Vhembe district. The sites were sampled during the low flow period of November 2011 and the high flow period of April 2012. Sampling sites were selected to present conditions in the Mutale, Mutshindudi and Tshinane Rivers upstream and downstream of the potential influence of small scale agricultural activities...
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Linden, Valerie M. G. "How vertebrate communities affect quality and yield of macadamia farms in Levubu, South Africa." Thesis, 2019. http://hdl.handle.net/11602/1286.
Full textAbstract:
PhD (Zoology)Department of Zoology
Ecosystem services and disservices are important features in agro-ecosystems and both can have relevant economic impacts on farmers. While there has been much research on the value of ecosystem services, especially that of pest control by bats and birds, ecosystem disservices are often overlooked or estimated separately. Both, services and disservices, however, change with landscape and may be supported by natural vegetation. It is hence inevitable to assess them together to uncover their relative value and importance. Habitat loss and fragmentation are major threats to biodiversity and ecosystem services. Agricultural intensification can cause habitat loss and can negatively affect natural ecosystems and their services. However, the removal of natural vegetation can also reduce ecosystem disservices that origin from natural areas. This study focused on the economic trade-off between biocontrol by bats and birds and crop raiding by vervet monkeys in South African macadamia orchards, using vertebrate exclusion experiments. Crop quality and yield were assessed and extrapolated to income values. The study furthermore focused in more detail on the impact of orchard edge habitat and farm management on bats as ecosystem service providers as well as the arthropod community, which can provide both services (pollination, biocontrol) as well as disservices (crop damage). The macadamia industry is highly profitable and plantings are expanding worldwide. South Africa is currently the largest macadamia producer in the world and the study area, Levubu, holds some of the oldest macadamia plantings in the country. The subtropical climate and high annual rainfall make this area an intensively farmed landscape. Levubu lies at the foothills of the Soutpansberg, a centre of biodiversity and patches of natural vegetation wind through orchards of macadamia, avocado, banana and timber. Insect pest pressure is high in the macadamia industry, with several stink bug species (Hemiptera) and two moth species (Lepidoptera) accounting for most of the damage to the crop. Chapter One provides a detailed overlook over the South African macadamia industry, describes the major pest insect species and their impact on the crop and highlights the role of ecosystem services and disservices and the potential importance of remaining natural areas. Over three consecutive seasons, between September 2015 and May 2018, bats, birds and monkeys were excluded, using cages with nets, from a total of 96 macadamia trees. Four treatments were applied (Full, Day, Night, Control) to distinguish between effects of the different functional groups. Exclusions took place at orchard edges with natural or human-modified edge habitat to assess the impact of vicinity to natural vegetation on pest control and crop raiding. Results presented in Chapter Two showed that biocontrol by bats and birds was stronger near natural vegetation and significantly impacted crop quality as well as yield. Effects of bats and birds were still significant at human-modified edges, whereas crop raiding by monkeys is limited to the natural orchard edges. The economic impact analysis shows that the benefits of biocontrol through bats and birds outweighed the income losses due to crop-raiding monkeys. The value of bats and birds was as high as USD 5000 per hectare per year through prevented insect damage and a 60% crop increase. Crop-raiding affected the yield, which dropped by about 26% and resulted in losses of about USD 1500 per hectare. These results highlight the importance of integrating natural areas into agricultural landscapes, even if they incur the risk of being disadvantageous. Farmers need to be made aware of the enormous economic benefits. Effective crop raiding mitigation strategies still need to be researched to avoid negative association with natural areas. These can, however, possibly also limit access for biocntrol agents, like bats and birds and thereby reduce their economic impact. Especially the removal of natural areas or establishment of buffer zones of unpalatable crops between agricultural land and forests is not advisable. Integrative research in agro-ecosystems on trade-offs between a variety of ecosystem services and disservices is necessary in future, rather than assessing them separately. The bat community on macadamia farms was monitored monthly and compared between orchard edges. Stationary bat detectors were placed at each set of exclosures for two consecutive nights a month, automatically recording from sunset to sunrise. Recorded bat calls were identified manually to species level and activity converted to Miller’s activity index, which counts the number of active minutes per species per night. We analysed the activity per feeding guild over season and landscape setting, estimated species richness and diversity (Hill’s numbers) and species turnover between farms, season and landscape setting, using diversity partitioning. The bat community was mostly influenced by seasonality with season turn-over accounting for 21% of total bat diversity (21.25 species). Edge habitat on the other hand only accounted for 5%. We found higher species richness and activity in the high season compared to the low. While there was no difference in diversity in the high season between the two orchard edge types, species diversity at the human-modified edge was lower than in the natural during the low season. Natural habitat might therefore be more important in the low season, while its effect is overwritten by high food availability during the high season. Clutter-edge species furthermore were more active at the natural orchard edges than open-air feeders, which were in turn more active at human-modified edges. Both activities dropped significantly during the low season. Chapter Three concludes that the macadamia landscape is able to support a high bat species diversity, which is affected by seasonal differences, probably due to food availability. Natural areas are important to be maintained to support sensitive species, relying on clutter habitat and natural roosts. Habitat features as well as farm management can also influence arthropod communities. Visual observations took place each month for 20 minutes per tree. Observations were counted and identified to at least order level. Chapter Four concentrates on the impact of orchard edge habitat and insecticide treatment on honey bees (83% of Hymenoptera observations) abundance. Honey bees were the only taxon significantly responding to both variables, with higher abundance close to natural areas and increasing abundance with increasing time since pesticide application. Honey bees furthermore seemed to recover slightly quicker from population crashes after insecticide treatments at natural edges than they did at human-modified edges. Hymenoptera can be highly beneficial to macadamia farmers, as farmers are heavily relying on pollination by honey bees and parasitoids are known to feed on major macadamia pest insect species. These ecosystem service providers were mostly affected by habitat and management practices, which may compromise their ecosystem service provision. Although commercial bee hives are exposed throughout macadamia orchards, they do not appear to fully replace the pollination and biocontrol services provided by feral species, which can be enhanced through resource supplementation by patches of nearby natural vegetation. Chapter Five concludes with emphasizing the general importance of natural vegetation in landscape planning of agricultural areas. This study proved confidently that benefits through ecosystem services largely outweigh negative impacts of ecosystem disservices, both stemming from these natural areas. Through the inclusion, maintenance and restoration of such patches of natural vegetation, farmers can potentially increase the value and effectiveness of biocontrol by bats and birds or other services. Seasonality largely determined bat species diversity, and a general high species diversity was observed in the macadamia landscape, possibly due to a certain degree of landscape heterogeneity and high food availability. Activity patterns of clutter-edge and open-air feeding bats varied with edge habitat, while clutter-dependent bat species
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Masakona, Morongwa Florence. "Self-efficacy in vocational development of women in low-socio-economic communities." Thesis, 2019. http://hdl.handle.net/11602/1430.
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PhD (African Studies)Department of African Studies
This study sought to investigate self-efficacy in vocational development of women in low socio-economic communities. The main aim of the study was to investigate the sociocontextual factors influencing self-efficacy of women. The objectives were fourfold: to examine the levels of self-efficacy of these women; to ascertain the extent to which selfefficacy influences vocational development of women and to propose a pragmatic women developmental model for acceleration of access to vocational development. The study utilised Self-Efficacy Theory (SET) as its theoretical frame-work which originated from Bandura’s (1986) Social Cognitive Theory (SCT). The study employed the qualitative phenomenological approach which is concerned about the everyday experiences of individuals and how human beings experienced a certain phenomenon. The population of the study comprised of women in low socio-economic communities, traditional leaders; Community leaders; health workers and religious leaders. The sample for this study was 60 participants. Data were collected through interviews; participant observation; and focus group discussions. The study recommended the pragmatic Partnership of the Family, Church and the Society (F.C.S) Women Developmental Mode. The model emphasizes the importance of teamwork between all the community structures to help in building up the confidence of women in low socio-economic communities.
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Seamark, Ernest C. J. "The use of incidence data to estimate bat (Mammalia: Chiroptera) species richness and taxonomic diversity and distinctness within and between the biomes of South Africa, Lesotho and Swaziland." Thesis, 2014.
Find full textAbstract:
A thesis submitted to the Faculty of Science, University of the Witwatersrand, Johannesburg, in partial fulfilment of the requirements for the degree of Master of Science. Johannesburg, 2013.Species richness and estimates of species richness were calculated based on assemblages of bats, within the biomes of South Africa, Lesotho and Swaziland following the vegetation classification of Mucina and Rutherford (2006). Similarity indices were used to explore the various relationships between the assemblages between the various biomes. Taxonomic diversity and distinctness examined the various assemblages within each of the biomes to investigate which biomes contained assemblages that were taxonomically diverse and/or taxonomically distinct compared to all species known to occur within South Africa, Lesotho and Swaziland. The Desert biome had the lowest recorded species richness (5 species), and there was insufficient data to calculate estimates of species richness for this biome. While the Albany had 11 species recorded with species estimates (Est.) ranging between 11-12, then in increasing order - Nama-Karoo (12 species, Est. 13-25 species), Succulent-Karoo (13 species, Est. 15-30 species), Fynbos (17 species, Est. 18-25 species), Indian Ocean Coastal Belt (31 species, Est. 32-36 species), Forest (32 species, Est. 37-46 species), Grassland (39 species, Est. 42-54 species), Azonal (45 species, Est. 49-63 species) and Savanna (57 species, Est. 59-67 species). The mean recorded estimates (based on the averages of all models) and rounding up to a full species indicates that the Albany biome contains the lowest expected species richness of 12 species, then Fynbos and Nama-Karoo (21 species), Succulent-Karoo (22 species), Indian Ocean Coastal Belt (34 species), Forest (43 species), Grassland (49 species), Azonal (54 species) and Savanna (64 species). Sample completeness was calculated for each of the biomes which indicates in ascending order that the Albany biome is 93.2% complete followed by the Indian Ocean Coastal Belt biome (91.1%), Savanna biome (89.9%), Azonal biome (84.1%), Fynbos biome (81.5%), Grassland biome (80.7%), Forest biome (75.8%), Succulent-Karoo biome (61.3%), and Nama-Karoo biome (59.9%). This showed that the Albany biome was found to be the only biome that has been sufficiently sampled. The Jaccard and Sørensen pair wise indices resulted in the clustering of the biomes with similar species richness, due to the large range in species richness (5-57 species) between the biomes. The Lennon et al. (2001) index which is not affected by large species richness between the samples indicated that the Desert and Nama-Karoo assemblages were most dissimilar to one another, while the Indian Ocean Coastal Belt assemblage was the most similar to the remaining biome assemblages. The Albany biome assemblage and Azonal biome assemblage were shown to the most dissimilar to one another. The Grassland, Nama-Karoo and Savanna biomes contribute to higher taxonomic diversity, while the Albany, Azonal, Fynbos, Nama-Karoo and Succulent-Karoo biomes contain lower species richness generally but represent a higher taxonomic distinctness from the chiroptera assemblages in the Grassland and Savanna biomes. The Desert, Forest and Indian Ocean Coastal Belt biomes do not iv contain bat assemblages that are neither taxonomically distinct nor diverse when compared to the taxa of South Africa, Lesotho and Swaziland. The bat assemblage within the Nama-Karoo are both taxonomically diverse and distinct from chiroptera assemblages found within the other nine biomes, requiring a greater focus on conservation actions for the bat species assemblage located within this biome.
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Mulondo, Goodman. "Human norovirus in rural communities of Vhembe District, Limpopo Province - South Africa." Diss., 2019. http://hdl.handle.net/11602/1366.
Full textAbstract:
MSc (Microbiology)Department of Microbiology
BACKGROUND: Human norovirus (NoV) is the etiological agent associated with acute gastroenteritis (AGE) in both children and adults worldwide. Children of <5 years of age, the elderly and individuals suffering from chronic diseases are potentially at high risk of NoV-associated illness. High morbidity and mortality rate associated with NoV have been reported worldwide. In children under the age of 5 years about 1.8 million death cases have been reported in developing countries alone. Despite the fact that the virus is affecting people of all age groups, there is lack of data to elucidate the importance and the role of NoV in children of the age above 5 years and adults. OBJECTIVE: To characterize human norovirus in patients with diarrhoea in rural communities of Vhembe district, Limpopo province. MATERIALS AND METHODS : From August 2017 to October 2018, outpatient between 5 and 68 years of age from rural communities of Vhembe district, Limpopo province were recruited for this study. A total of n=80 stool samples were collected from patients with diarrhoea and were kept at 4˚C throughout the transportation to the laboratory and refrigerated at - 20˚C prior to RNA extraction. Stool samples were tested for norovirus using the RIDA©GENE NOROVIRUS I & II real-time RT-PCR. The RNA extracts tested positive for norovirus were subjected to RT-PCR amplification. The RT-PCR products of the amplified fragments were sequenced, and phylogenetic trees were constructed by the neighbor-joining method using MEGA 7 software. RESULTS: NoV was detected in 13(16%) out of 80 stool samples collected, of which 6 (46%) strains belonged to norovirus GII and 7 (54%) strains to norovirus GI. A total of 5 genotypes were detected (GII.Pg, GII.1, GII.2, GII.4 Sydney 2012). The phylogenetic analysis revealed circulation of NoV genotypes with considerable diversity. CONCLUSION: This study illustrates NoV prevalence and substantial genetic diversity in patients above 5 years of age living in rural communities of Vhembe district, Limpopo province. Continued systematic surveillance to evaluate norovirus association with diarrhoea is needed to have a full picture on the epidemiology and disease burden in people of all the age groups.
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Weier, Sina Monika. "Ecology and management of bat communities to increase pest control in macadamia orchards, Limpopo , South Africa." Thesis, 2019. http://hdl.handle.net/11602/1315.
Full textAbstract:
PhD (Zoology)Department of Zoology
An ever growing human population and accelerating land use change is associated with the loss of species and their ecosystem services. Agricultural intensification has led to a worldwide threat of extinction to about one quarter of all bat species, despite the valuable ecosystem service of pest control provided by bats. The decline in bat populations is mainly attributed to the loss or fragmentation of habitats, roost sites and feeding opportunities related to agricultural intensification and land use change. Therefore, proactive management of bat communities in agricultural landscapes is essential. South Africa is the world’s largest producer of macadamias and the industry continues to grow. This study gains insight into the habitat use and foraging behaviour of insectivorous bat species on a temporal and spatial scale, in and around macadamia orchards in order to advise management strategies on how to increase bat activity and, possibly, pest control. It also focuses on the preferences of artificial roost sites used by insectivorous bats in macadamia orchards. The diet of insectivorous bat species is especially difficult to study and the least invasive tool to gain information is the study of bat faecal pellets. In order to provide evidence for the consumption of pest insect species by bats and thus incentive to farmers for a more integrated pest management approach (IPM), this study explored molecular approach to insectivorous bat diet analyses using fragment analysis of bat faecal pellets with fluorescent-labelled species-specific primers (designed for the CO I gene). This study was conducted in the subtropical fruit growing area of Levubu, Limpopo province, South Africa between the towns Thohoyandou (22°59'03.7 S, 30°27'12.8 E) and Makhado/Louis Trichardt (23°03'03.6 S, 29°55'12.7 E). Levubu also accounts for the second highest production of macadamia in South Africa. An introduction to the order Chiroptera and into the relevance of insectivorous bat species to agriculture as well as the importance of a more integrated pest management approach (IPM) focusing on bats is provided in Chapter One. Bats were acoustically monitored and light traps were used to catch arthropods during one annual cycle. I sampled five macadamia orchards once a month from September 2015 to August 2016 and used GIS and R to analyse both the general bat activity and foraging bat activity of the two main foraging guilds (open-air/clutter edge guild) in different land use types as well as total bat activity with respect to arthropod abundances. As reported in Chapter Two, results show that the overall clutter edge guild activity (number of passes) decreased with macadamia and orchard (all other fruit) cover in the macadamia high season (December to end of May) and increased with bush cover and distance to settlements (potential roosts) in the macadamia low season (June to end of November). Open-air guild activity increased with fallow cover (uncultivated grassland with scattered trees and shrubs) in the high season. Foraging activity (feeding buzzes) of the clutter edge guild increased with bush cover over the whole year. Total activity (both guilds) increased with abundance of true bugs (Hemiptera), including the main macadamia pests, and bush cover. Macadamia cover has a negative effect on the activity of the clutter edge guild in the high season, with low activity in the orchard center (high cover), and activity increasing in a linear way with decreasing orchard cover at the orchard edge (low cover). These results suggest that the clutter edge guild prefers foraging close to the edges of the orchards rather than in the center, while the open-air guild prefers semi-natural habitats (fallow). When numbers of pest arthropods drop in the macadamia orchards, the natural land use type, bush, becomes a more important foraging habitat and thereby increased the activity of the clutter edge guild. From June 2016 to July 2017, I scanned 31 bat houses, mounted on poles on six macadamia orchards, for bats or any other occupants such as wasps, birds and bees. Twenty-one multichambered bat houses of three slightly different chamber designs were erected on poles, in sets of three. Additionally, five bat houses of the type ‘Rocket box’, four bat houses in sets of two (black and white) and one colony bat house were erected. Bats were counted and visually identified to family or species level. From December 2016 to end of March 2017, three IButtons were installed to record temperature variation between one set of three bat houses. As reported in Chapter Three, results show that the central bat house in the set of three and the black bat house in the set of two had a significantly positive effect on bat house occupancy. There was a significant difference in the mean temperature between the houses in the set of three, with a significant difference in temperature of 0.46°C between the central and the first bat house. The three bat houses erected in sets varied slightly in their chamber design, with the central bathouse having the most chambers (six), while the bat houses to either side had less chambers (four), set at an angle or straight. This and the insulation to either side by the other bat houses is assumingly what caused the central bat house to be on average warmer. The Yellow-bellied house bat (Scotophilus dinganii) was by far the most recorded and the only species observed to co-habitat a bat house with another animal species, in particular honeybees. The study might confirm assumptions in that the microclimate of bat houses, respectively their insulation, sun exposure and color appear to be important factors influencing bat house occupancy. The two preferred bat houses in our study were the black, in the set of black and white, as well as the central, and on average warmest bat house, in the set of three. I collected bat faecal pellets with two different methods between July 2015 and April 2017 to determine the prevalence of pest insects in faecal pellets. Eighteen of the bat houses (in sets of three) on three different farms and two Egyptian slit-faced bat (Nycteris thebaica) roosts were fitted with trays in order to collect pellets from those occupied by bats. I noted occupancy of bat houses to species or family level to keep disturbance minimal. Additionally, I collected pellets from individuals captured by means of mist nets and harp traps. Four of the main pest-insects; the two-spotted stinkbug (Pentatomidae: Bathycoelia distincta), the green vegetable bug (Pentatomidae: Nezara viridula), the macadamia nut borer (Tortricidae: Thaumatotibia batrachopa) and the litchi moth (Tortricidae: Cryptophlebia peltastica), were collected from pheromone traps or after scouting for primer development and optimisation. After extracting DNA from the bat faecal samples the target regions were amplified in a multiplex PCR and fluorescently labelled PCR amplicons were analysed and interpreted. In order to verify multiplex analyses results, all samples were amplified with all four sets of primers in plates and those that produced amplicons were purified and sequenced. As reported in Chapter Four, results show that fragment analyses yielded a total of 63 out of 103 samples tested positive for pest insect species (61%) with a total of 92 positive fragments. Primer specificity could be confirmed to 100% for the sequences obtained for Bathycoelia distincta (26/26) and Nezara viridula (12/12) primers but not for all sequences obtained fot Cryptophlebia peltastica (18/30) and Thaumatotibia batrachopa (1/14) primers. One sample showed no positive fragments but contained a positive sequence for N. viridula. Three samples tested positive for one pest-species fragment but contained a positive sequence for a second pest-species (B. distincta, T. batrachopa and C. peltastica). Adding four positive fragments and one additional positive sequence to the data. This means that sequences of pest insect species were obtained from 54 out of the 103 samples (55.6%) with a total of 73 pest insect sequences. For the high season (December to end of May) a total of 37 positive fragments for the four pest insect species and 24 negative samples were yielded and for the a low season (June to end of November) a total of 36 positive fragments and 15 negative samples. Looking at the pest consumption of the different bat species or families, our results show that all of them foraged on pest insect species. Whereas, all species and families except Myotis bocagii and Rhinolophus simulator (for which N<2) foraged on both the Lepidopteran and Hemipteran pest species. Therefore, all families of bats of which faecal pellets were analysed for this study (Molossidae, Nycteridae, Rhinolophidae and Vespertilionidae) foraged on one or more of the four pest insect species. In summary, Chapter Five concludes that natural and semi-natural vegetation promote bat activity in macadamia orchards, and potentially bats' provision of the ecosystem service of pest control. In times of accelerating land use change, remnants of natural vegetation are important refuges and need to be maintained or restored to conserve bat species and promote their ecosystem services. The study also shows that bat activity might be improved by adding roosting opportunities to orchards. Warm and well-insulated bat houses mounted freestanding on poles and in sets appeared to work best in northern South Africa. Further research on co-habitation of bat houses and displacement behaviour as well as the potential importance of altitude and distance to water is needed. All of the species or families of bats from which faecal pellets were collected have been confirmed to forage on at least one of the four pest insects and the bat species have shown to be much more generalist and presumably opportunistic feeders than previously assumed. Thus, this study provides incentive and advice to farmers for a more integrated pest management approach (IPM).
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Karambwe, Simbarashe. "Prevalence of Diarrhea causing bacteria, viruses and parasites in water sources in the rural communities in the Vhembe District." Diss., 2017. http://hdl.handle.net/11602/991.
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Mukhuwana, Onica. "Challenges affecting the management of Thulamela wetlands: managers engagement with local communities use of wetlands." Diss., 2020. http://hdl.handle.net/11602/1602.
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MENVSCDepartment of Ecology and Resource Management
Wetlands are amongst the world’s most important ecosystems providing many direct and indirect benefits to local communities. The majority of South Africans residing in rural areas depends mostly on natural resources for their livelihood. However, wetlands in South Africa continue to be the most threatened ecosystems primarily due to unsustainable use and poor resource management. Additionally, the history of South Africa has been characterised by exclusion of local communities in the process of decision-making and general management of natural resources. The aim of the study was to investigate possible challenges affecting the management of Thulamela wetlands by assessing the level of interaction and conflicting interest amongst participating stakeholders, including role of wetlands on local communities for possibly improved management scenarios. The study used questionnaires, interviews and observations to capture data on the local communities and management stakeholders. Seven wetlands within Thulamela were selected as study areas and the study population was selected based on their specialised expertise, involvement, and closeness to wetlands. Data was analysed using SPSS, Microsoft Excel and also using thematic analysis in NVIVO. The results show that selected wetlands are highly beneficial in supporting the local communities. Based on the socio-economic and demographic characteristics (family size, age, gender, and employment status) measured, the study deduced that unemployment rate or low income of the respondents is the main contributor to an increase dependency on wetland utilization. Additionally, the results revealed that unregulated use and excessive agricultural practices such as cultivation and livestock grazing are common in all study areas, hence further degradation of these wetlands. One of the findings from the study was the destruction of wetlands through expansion of human settlement. The population increase in the areas was found to be major drivers of socio-economic challenges causing people to spread through and exploit wetlands. Consequently, human settlement along the wetland area has resulted in the extensive clearance of natural wetland vegetation. Furthermore, the results show that there is poor wetland information transfer to the local communities most likely due to none/or insufficient outreach programmes. The current management arrangements and structures for selected wetlands are not being practiced through the unequal representation amongst management stakeholders and poor inclusion of local communities in management processes. Additionally, there are currently no openly known active platforms provided upon which stakeholders are able to air their views on wetlands management issues. The findings further show differences in perceptions amongst wetlands users, non-users and management stakeholders. The management stakeholders have a relatively strong focus on livelihood and environmental problems, they regard rules and regulations on wetland use’ as a relatively central variable. On the other hand, the local communities are currently more concerned about the benefits they receive from the wetlands than the conservation of those systems. The study also revealed unequal representation amongst participating management stakeholders. The findings show poor interaction between the management stakeholders and the local communities; differences in perceptions amongst resource users, non-users and managers; exploitation of wetlands resources; poor wetlands information transfer. The results suggest that centralised top-down rules and regulations on wetland use are not sufficient for maintaining the wetland ecosystem and this poses a challenge to sustainable wetland management. Therefore, there is a need to develop shared understanding through bottom-up approaches to wetland management that are nested within national regulatory frameworks, ideally combined with awareness building and knowledge sharing on the ecological benefits and management of wetland.
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Masindi, Wontonda. "The prevalence of Vibrio cholerae and other Vibrio spp. in surface water of rural communities in the Limpopo Province." Diss., 2017. http://hdl.handle.net/11602/989.
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Modiba, Refilwe Victor. "The impact of riparian alien plant removal on aquatic invertebrate communities in the upper reaches of Luvuvhu River Catchment, Limpopo Province." Diss., 2016. http://hdl.handle.net/11602/762.
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Mnguni, Khehla Isaac. "The socio-economic analysis of agritourism in two rural communities in the Limpopo province." Thesis, 2010. http://hdl.handle.net/10500/3639.
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The main aim of the study was to analyze the socio-economic variables effecting agritourism business using data from two rural communities of the Limpopo province, Nwa’metwa and Lenyenye. The results showed that there are significant socio-economic differences among agritourism and non-agritourism farmers. The socio-economic variables used are literacy, gender, age, land size and family size.
Two multinomial models were used to model agritourism behavior. The two models, namely fully and partially registered agritourism farmers were estimated. Non-registered agritourism farmers were used as the reference group. These models denoted the relative probability of both fully and partially registered agritourism farmers to the probability of the non-registered agritourism farmers.
The logarithm results implied that older farmers were less likely to prefer to operate business as a fully or partially registered agritourism farmer compared to the non-registered agritourism group. Farmers’ decisions in business operation were informed by their level of education, experience as well as social networks.Agriculture, Animal Health & Human Ecology
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Masipa, Makgoshi Priscilla. "An assessment of the sustainability of poverty eradication projects in rural communities of Capricorn District Municipality: Limpopo Province, in South Africa." Thesis, 2010. http://hdl.handle.net/11602/1012.
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Mulaudzi, Azwindini Valentia. "Factors Contributing to Poor Utilization of Contraceptive Services by Youth in the Rural Communities of Mutale Municipality in Limpopo Province." Diss., 2016. http://hdl.handle.net/11602/812.
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Mokabane, Dikeledi Mashego. "Views of communities regarding organ donation in Sekhukhune District of Limpopo, South Africa." Thesis, 2020. http://hdl.handle.net/10386/3428.
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Thesis ( M.A. (Nursing)) -- University of Limpopo, 2020Introduction and background: There is an increase shortage of organs for donation to patients with end stage organ failure worldwide, including in African countries and South Africa as well. Regardless of the number of potential organ donors in South Africa organ availability remain scarce at communities are not actively involved in organ donation. Views of communities regarding organ donation among Sekhukhune communities has not being researched before, the purpose of the study is to explore views of Sekhukhune Community at Limpopo Province of South Africa regarding organ donation. Methodology: Qualitative research method was used, applying descriptive and explorative research designs. The study site was Makhuduthamaga municipality of Sekhukhune district at Limpopo Province, targeting community members as research participants. Fifteen (15) participants were interviewed using semi-structured interviews until data saturation was reached. During data collection the researcher used an interview guide and the participants were audio recorded. Ethical principles were adhered to before and during conduction of the research study. Collected data was analysed using 8 steps of Tech’s coding method. Results: The study revealed that there are different views of community towards organ donation, which contribute to uncertainty, positivity and negativity towards organ donation. Knowledge and understanding of organ donation was found to be a factor that can influence improvement of organ donation among communities at Sekhukhune district. Other factors that were found to contribute the lack of organ donation among communities were religion, culture and stigma attached to organ donation. Conclusion: Community members lack knowledge of organ donation and end up holding in to the myth regarding organ donation. Health awareness, workshop and education to the communities in schools and community facilities such as halls and meetings can improve knowledge on organ donation promoting involvement of community members.
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Matlala, Lebogang Makgabo. "The involvement of women in governance within traditional communities: A case of Ga-Machaka Village in Molemole Local Municipality." Diss., 2019. http://hdl.handle.net/11602/1451.
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MPMOR Tambo Institute of Governance and Policy Studies
There is a problem with the involvement of women on governance within traditional communities in South Africa. Consequently, the socio-political and cultural constraints narrow the potential of women and the otherwise untapped women contribution to the growing economy. This study investigates the involvement of women in governance within traditional communities in South Africa using the Ga- Machaka Village in Molemole Local Municipality as a case in point. Using the mixed method research approach, the study indicates that women in traditional communities are looked down upon and are disadvantaged from being part of governance and public administration based on gender terms. The study indicates that traditional communities in South Africa implicate negatively on women’s independent rights such as direct and equal opportunity to job offers. This is exacerbated by the customary inclination of women as house wives. The involvement of women in governance and public administration is somehow stifled within traditional communities as discussed in this study.
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Mandiwana, Tshamano Donald. "The impact of the Land Restitution Programme on the livelihood of rural communities : a case study of Ga-Makgato Community in Limpopo Province of South Africa." Thesis, 2014. http://hdl.handle.net/10386/1252.
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Thesis (M. Dev.) --University of Limpopo, 2014This study aimed to assess the impact of the Land Restitution Programme on the livelihoods of the rural communities of Ga-Makgato village in the Molemole Municipality, Limpopo Province. As a basis of assessment, the primary and secondary data were collected and analysed. Electronic and non-electronic sources were used to collect secondary data while primary data were collected through pre-tested questionnaires. The study found that both males and females who are 38 in number participate in the land restitution programme. Of this number, 8% was found to be the youth, while the elderly and adults population of the beneficiaries of the CPA constitute 92%. Females constitute 47%, while the percentage of their male counterparts stood at 53%. In terms of the level of literacy, 11% of the total number of beneficiaries could not read or write and this is a serious concern of this study. Analysis of number of jobs created was also carried out. It was found in this study that the CPA managed to create on 38 jobs. In as far as income generating ability of the CPA is concerned, R1,5million was generated during the period under review. Of this amount, R710 000-00 came from the sales of Nguni cattle while the Bonsmara generated R650 000- 00. The following challenges were established in this study, i.e., lack of sufficient grazing space, lack of access to adequate funding, lack of technical and financial management skills, lack of sufficient government support, lack of access to adequate water sources, lack of access to markets, high electricity bills and lack of proper record keeping systems. 4 The following recommendations are provided: The CPA should review the lease agreement; LEDA should in consultation with other financial institutions assist the CPA in accessing funding; The Department of Agriculture should provide the CPA with technical assistance; The Department of Water Affairs and Agriculture should ensure supply of water and infrastructure; The Department of Agriculture and LEDA should provide the beneficiaries of the CPA with market infrastructure and information; The Molemole Local Municipality should provide subsidy for electricity bills; and Policy makers should consider implementation of the job creation model provided in this study. If these policies can be successfully implemented, the land restitution programme in the Capricorn District, particularly at Ga-Makgato and surrounding villages, can become a major strategy for improving the livelihoods of the rural poor.
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Nevhutalu, Phathutshedzo Priscilla. "The Impact of Nyaope use among the Youth in the Rural Communities of Thulamela Municipality, Vhembe District, Limpopo Province, South Africa." Diss., 2017. http://hdl.handle.net/11602/926.
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MA (Psychology)Department of Psychology
The aim of the study was to explore the impact of nyaope among the youth in the rural communities of Thulamela Municipality. The study adopted qualitative approach and exploratory research design. Population of the study were from Itsani, Maniini and Muledane villages in Thulamela municipality, both males and females, 18-31 and who were involved in the use of nyaope. Non-probability purposive and snowball sampling methods were adopted because participants who use nyaope are hard to locate. The total number of participants (8) who formed part of the study was determined by data saturation. Semi-structured interviews were used as a method of data collection. To ensure trustworthiness, pre-testing of the instrument was conducted to identify any potential problems. Credibility, transferability and conformability was well considered. Thematic data analysis was employed since the researcher was more involved in interpretation of collected data, thematic analysis enabled the researcher to capture complex meaning.
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Baloyi, Risimati Thomas. "The involvement of parents in rural communities in the education of their children in secondary schools." Diss., 2013. http://hdl.handle.net/11602/87.
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Nyamukondiwa, Pertina. "Resilence of rural communities to the effects of climate change in Thulamela Municipality of South Africa." Diss., 2015. http://hdl.handle.net/11602/313.
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Mudzanani, Nkhangweleni Seth. "Institutional capacity of electricity supply services for rural communities in Mutale Local Municipality of Limpopo Province." Diss., 2016. http://hdl.handle.net/11602/418.
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Kabue, Ngandu Jean Pierre. "Molecular characterization of norovirus stains circulating in rural communities of Limpopo Province of South Africa." Thesis, 2018. http://hdl.handle.net/11602/1163.
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PhD (Microbiology)Department of Microbiology
Globally, one in ten child deaths before the age of 5 years is due to diarrheal disease, causing almost 800,000 mortalities worldwide, which mostly occur in Sub-Saharan Africa and South Asia. Eighty-eight percent (88%) of diarrheal deaths worldwide are attributable to unsafe water, inadequate sanitation and poor hygiene. Unsanitary environments and poor hygiene practices allow diarrhea causing pathogens including viruses, bacteria and parasites to spread more easily. Norovirus (NoV) are now considered the most common cause of outbreaks of nonbacterial gastroenteritis. However, the factors which control the genetic diversity, the sources of sporadic NoV infections, the transmission and persistence of infection are poorly understood. Limited data are available for NoVs strains in South Africa, especially in rural and peri-urban areas. Despite the excessive burden of diarrhea disease in developing countries, NoVs outbreaks have been to date mostly reported in developed countries. Given that the contribution of the various pathogens to diarrhea may differ substantially between regions depending on local meteorological, geographic, and socio-economic conditions, there is a need to investigate intensively the role of viral agents associated with diarrhea in different settings in Africa continent. How would poor living conditions in rural setting impact the prevalence and genetic characteristics of Norovirus strains circulating Limpopo province is the research question of this study. ix To determine the prevalence and genetic diversity of NoVs strains circulating in the rural communities in the Limpopo Province, South Africa and investigate the genetic relationship between NoVs strains, a cross-sectional study was performed on human stools collected from rural communities. We used qualitative variables of poor living environmental conditions including type of water used at the household of child’s parent or guardian, use of toilet seat, presence of livestock at the household and parent employment status to assess possible environmental risk factors of NoV infection within the study area. Prior to this prospective study, we conducted a systematic review of the PubMed and EMBASE databases for published articles of Human NoVs in Africa between 1990 and 2013 in order to assess the contribution of Human NoVs to diarrhoeal diseases in Africa. This review provides a picture of Human NoVs studies in Africa and reveals that unreported sporadic gastroenteritis cases of Human NoVs are common in Africa. Most are community-associated infections reported from urban settings. Possible environmental transmission routes have been documented. Combined environmental and clinical studies are required for targeted actions to control transmission of Human NoVs in Africa. Between July 2014 and April 2015, outpatient children under 5 years of age from rural communities of Vhembe district, South Africa, were enrolled for the study. A total of 303 stool specimens were collected from those with diarrhea (n=253) and without (n=50) diarrhea. NoVs were identified using real-time one-step RT-PCR. Nucleotide sequencing methods were performed to genotype the strains. Phylogenetic analyses x were performed to compare identified NoVs genotypes to the worldwide circulating strains. One hundred and four (41.1%) NoVs were detected. NoV detection rates in symptomatic and asymptomatic children (OR = 1.24; 95% CI 0.66 – 2.33) were not significantly different. Comparison of the median CT values for NoV in symptomatic and asymptomatic children revealed significant statistical difference of estimated GII viral load from both groups, with a much higher viral burden in symptomatic children to our knowledge this is the first study reporting on the differences in estimated viral load of GII and GI NoV positive cases and controls. The study findings may have implications for the diagnosis of NoV disease and future vaccine development, which may only need to consider GII as the genogroup associated with diarrhea in the South African population. Sequence analyses demonstrated multiple NoV genotypes identified in rural communities of Vhembe district. The most prevalent NoV genotypes were GII.4 Sydney 2012 variants (n=7) among the capsid genotypes, GII.Pe (n=9) among the polymerase genotypes and GII.Pe/GII.4 Sydney 2012 (n=8) putative recombinants among the RdRp/Capsid genotypes. Two unassigned GII.4 variants and an unusual RdRp genotype GII.P15 were found. With note, the rare GII.P15 identified in this study, has a common ancestor with GII.P15 strain from Japan previously reported as GII / untypeable recombinant strain implicated in a gastroenteritis outbreak. To our knowledge this is the first report of this unusual genotype in the African continent. Though not proven predictive of diarrhea disease in this study, the high detection rate of NoV reflects the substantial exposure of children from rural communities to enteric xi pathogens possibly. However in this study no risk factor has been found between NoV positive and qualitative environmental variables of poor living conditions in rural setting. The results also suggest that the difference between asymptomatic and symptomatic children with NoV may be at the level of the viral load of NoV genogroups involved. The findings highlighted NoV genetic diversity and revealed continuous pandemic spread and predominance of GII.Pe/GII.4 Sydney 2012, indicative of increased NoV activity. An unusual RdRp genotype GII.P15 and two unassigned GII.4 variants were also identified from rural settings of the Vhembe district/South Africa. NoV surveillance
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Banda, Ntshunxeko Thelma. "Characterization of E. coli strains from rural communities in the Vhembe District (Limpopo South Africa)." Diss., 2019. http://hdl.handle.net/11602/1489.
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MSc (Microbiology)Department of Microbiology
Background: Escherichia coli is a facultative anaerobic bacterium that forms part of the gut microbiota. It is used as an indicator that confirms recent faecal contamination. E. coli have been identified amongst the pathogens that are mostly responsible for moderate to severe diarrheal outbreaks in the low and middle-income countries. With South Africa facing an issue in water scarcity, issues concern poor sanitation and hygiene practices results in serious public health problems and allows E. coli to be transmitted from infected human or animal faeces to a new susceptible host using environmental reservoirs such as soil, water, hands as the transmission pathway. Objective: The primary objective of the study was to characterize E. coli strains from rural communities of Vhembe district, Limpopo, South Africa. Methodology: Households of 7 villages in the Vhembe district were randomly selected. A total of 81 households (HHs) were part of the study. In each household, a structured questionnaire was used to background information on WASH practices. Samples taken from each HH included toilet seat swabs, floor swabs, child and mother handwash samples, stored water samples and running tap water samples. A total of 399 samples were analysed using Colilert® Quanti-trays®/2000 method to detect the presence of Escherichia coli. Positive E. coli samples were further identified using multiplex polymerase chain reaction (m-PCR) to determine the pathogenic strains of E. coli. Transmission pathways were established using identified strains. Results: Data from the structured questionnaires showed common problems of availability of running tap water; lack of provision of sanitation; open practice on defaecation and very little hand hygiene practices. A total of 91 (22.81%) samples tested positive for E. coli with the Colilert® Quanti-trays®/2000 method. The mothers’ handwash samples had the most E. coli prevalence followed by stored water samples. The most prevalent E. coli pathotype was EPEC with the virulence gene eae. Atypical EPEC (60.44%) outnumbered the typical EPEC (5.49%). The pathotype ETEC was detected in 41.76% samples and EHEC in 9.89% samples. Transmission pathway was observed from the different households; with eae gene (aEPEC) being the most detected from samples looking at the LT gene (ETEC). v | P a g e Discussion: All 7 villages are facing common issues such as lacking running water, poor sanitation and improper hand hygiene practices. The mothers were the most contaminated and it was observed that its due to the daily activities that they perform around the house. It is of importance for them to practice proper hand hygiene to prevent transmission of pathogenic E. coli to the children via direct or indirect transmission route. The pathogenic E. coli was detected from all different samples collected from the households including the floor and toilet seat samples. EPEC was detected the most, and studies have shown that this strain is known to cause diarrheal infections in young children from developing countries. Conclusion: The members of the study village households were aware of the WASH services and its importance. However, proper implementation into their day-to-day life is lacking due to the high number of TC and E. coli detected from handwash samples and stored water samples from the households. Recommendation: Appropriate WASH strategies should be established to ensure good health at the village households. Further studies should be done to check possible transmission pathways from more village households.
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Madzhie, Mpho. "A model to facilitate language acquisition/development in children between 0 to 3 years in rural communities of Makhado Municipality, Limpopo Province." Thesis, 2019. http://hdl.handle.net/11602/1425.
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PhD (Psychology)Department of Psychology
The aim of the study was to develop a conceptualized model that will enhance language acquisition of children between 0 and 3 years. Language is a use of words and symbol to convey message, or communication. Generally, from birth to the age of four months children express their needs through crying and are soothed by the sound of voices or by low rhythmic sounds. When adults talk to children, children later imitate adult’s tongue movements and start to make sounds, coos and gurgles. Providing children with developmental stimulation and exposing them to learning opportunities increases their cognitive and social-emotional skills/abilities. Strategies to enhance language development are fundamental in children and can reduce many literacy related problems in later childhood. The objectives of the study are: to describe activities done by caregivers to influence language development; to identify factors that influence language development; to describe the importance of language development and to explain the disorders that are associated with language development. This study was qualitative in nature and it utilised an explorative design. This research design enabled the researcher to investigate the nature of acquisition comprehensively as well as the development of language and other factors that are related to it. The study was conducted at Vhembe District Municipality. Three villages were selected, namely Tshikuwi, Tshirolwe and HaMatsa villages, which are found in Makhado Municipality under Limpopo Province, South Africa. Purposive sampling was used to sample participants for the study. The individuals selected were those judged to have certain special characteristics as well as the ability to provide in-depth information for the purpose of the study. Thirty participants were selected to participate in the study. The semi-structured face to face interview and the interview guide with open-ended questions were used for data collection. Pre-testing of the interview guide was done to check if the guide would produce the expected results, three women from three different villages were selected for pretesting. All questions in the interview guide were addressed during data collection. Collected data were transcribed and analysed using thematic content analysis. The study adhered to the following research ethics: informed consent, anonymity, confidentiality, voluntary participation, no harm to the participants and dissemination of results. The study revealed that language is an important tool which is used to convey information from one person to the other. The findings indicate that language helps children to communicate and relate with other people. Language was also explained as a tool which is used to educate children, either at school or at home. The study shows that when children are learning language, they will also be stimulating their reasoning, thinking and problem-solving skills. In addition, it was also indicated that cognitive development reduces problems such as poor language development, a low self-esteem and isolation. The findings of this study show that there are a number of activities that can be used by caregivers and parents to foster the development of language in children. Those activities include, communicating with a child, reading of books, watching TV, naming of objects and explaining meaning of words. The study also identified several environmental factors that can be used to foster the development of language in children. The following environmental factors were identified in the study: communication, parental level of education, home socioeconomic status, caregiver’s personality and the availability of other children in the family. Lastly, the findings show that there are many disorders that may affect the development of language in children. The language disorders that the study identified include expressive language disorder, dyslexia, and inability to understand spoken. However, the study also reveals that these disorders may be treated. The findings of this study lead to the development of a conceptualized model to facilitate language acquisition in children between 0 and 3 years was developed. The meaning of one concept, namely reinforcement was explained in detail, in order for users of the model to understand its operational definition in the model. Reinforcement was explained because it has a diversity of meanings. The model enabled the researcher to create a link between research and what is happening in a society. Model validation was done to verify if the developed model relates to practical life, research and language development. The model for this study was validated for its applicability and usability. The drafted model was given to psychologists, speech therapists and parent to determine its usability and applicability. Keywords: language, language acquisition, language development model, language disorders.
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Boniface, Dean. "Productive minescape : the rehabilitative and productive relationship between architecture, an open cast mining landscape and the subsistence farming communities, Mogalakwena, Limpopo." Thesis, 2014. http://hdl.handle.net/10210/10305.
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M.Tech. (Architectural Technology)This project is an architectural response to a setting shared by an active open cast platinum mine and the surrounding rural traditional subsistence farming communities located in the Mogalakwena municipality, Limpopo Province. The area is characterised by its mine waste landscape and large open cast pits, all of which are remnants of the process of open cast mining. The Mogalakwena communities’ economic livelihood is largely dependent on agricultural land. This land is reducing, partly due to the establishment and expansion of the mine and partly to the increased growth rate of the surrounding communities. This project argues that the remnants of the mining industry (particularly open cast pits, mine waste rock and infrastructure) need not be redundant and can be reused and rehabilitated to result in productive outcomes by establishing the necessary systemic strategy for transposed use. It contends that the proposed reconfi gured mining infrastructure programs can be responsive to context (history, environment and communities), climate and natural processes of the area. In testing the strength of this argument, diff erent research investigations and theories were used as was appropriate to each area of research in this topic. These included, among others, investigations into the history and context of both the mining industry generally, including its legislative context, and the site specifi cally. Considerations of the embedded memory of the site were taken into account. Theories which assisted in leading to a proposed strategy for the site on a contextual scale included theories relating to contextual productive systems, continuous productive urban landscapes, permaculture and biomimicry, augmented landscapes, entropic architecture, architecture as a machine and the mortality of architecture. Ultimately, a proposed solution as an architectural product was sought. The following questions had to be answered in a eff orts to produce an appropriate architectural response to the site and its challenges: 1. How can the role of architecture reconfigure the redundant, disused mine waste landscape so as to harness a rehabilitative and productive system and how can that system be managed by the design? 2. How can contemporary rural agricultural projects be challenged to form new typologies that empower the communities to provide for their own present and future needs? 3. How can architecture as a system be designed to outlast the temporality of its program to transform a redundant open cast mining landscape into a productive landscape? The architectural intervention is a design of reconfi gured structures aimed at facilitating a productive and sustainable environment for agricultural advancement, in order to rehabilitate the existing “minescape” (industrially altered mining land), and reconcile the use of this land with the history of subsistence farming as practiced by members of the surrounding communities. The proposed architectural product strives to create a site and context responsive architectural program or system by fusing technological strategies into the body of architecture that are essentially environmental. It aims to employ air, water, sun, and earth to augment the productive relationship between architecture and the “minescaped” terrain, thereby creating a Productive Minescape, which yields tangible positive by-products such as agriculture, renewable energy, water treatment and harvesting systems, among others. Other productive by-products of the project are education and research facilities and facilities which aim to provide accessibility and reconciliation of the stakeholders of this area, to the site and to each other. The introduction of these systems and facilities will be phase one of the proposed architectural intervention. However, the intervention is networked, and therefore has a scalable logic which is envisaged to grow and develop at a much larger and more intensive scale, suggested to occur over the next 30 years, which are phases two, three and four (see figures 17 and 18).
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Agyepong, Adelaide Owusu. "The possible contribution of Moringa Oleifera Lam. Leaves to dietary quality in two Bapedi communities in Mokopane, Limpopo Province." Diss., 2009. http://hdl.handle.net/10500/2599.
Full textAbstract:
A high rate of micronutrient deficiencies persists in Africa with the most vulnerable groups being women and children. The Moringa oleifera tree has been identified to help alleviate malnutrition at household level because of its rich content of vitamin A in its plant form - beta-carotene, iron and vitamin C. The objectives of this study was to identify households that consumed Moringa, to identify households that required diet diversification through the use of a Household Dietary Diversity Score (HDDS) and to determine the acceptability of various dishes prepared from Moringa leaves as a possible contribution to the alleviation of malnutrition in resource poor communities. The dietary diversity score of the traditional Bapedi community is 4.7 and the results of the acceptability test of dishes prepared with Moringa indicated that Moringa could be recommended as an additional food ingredient to add micronutrient to the diet of Bapedi communities.Agriculture and Environmental Sciences
M.A. (Human Ecology)
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Taonameso, Solomon. "The use of Water Point Mapping (WPM) as a tool to assess improved water resources in rural communities." Diss., 2015. http://hdl.handle.net/11602/786.
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Ellery, William Nolan. "Classification of vegetation of the South African grassland biome." Thesis, 1992. http://hdl.handle.net/10539/22708.
Full textAbstract:
A thesis submitted to the Faculty of Science,
University of the Witwatersrand, Johannesburg,
in fulfilment of the requirements for the degree
of Doctor of Philosophy.
Johannesburg 1992.The aim of the study was to develop understanding of the relationships between vegetation types of the grassland biome of South Africa and the environment, with an emphasis on structural and functional characteristics. The grassland biome in South Africa has traditionally been divided into 'pure' grasslands, assumed to be climatically determined, and 'false' grasslands of recent anthropogenic origin. A review of literature from several disciplines including palaeobotany, archaeology, ecology and biogeography indicates that this is not a valid distinction. It is clear that the distribution of the grassland biome as a whole is poorly understood, but the general correlation between the distribution of biomes and climate elsewhere in the world suggests that this warrants more detailed investigation. A water balance approach was used to develop climatic incices that both predict the distribution of grasslands, and are easy to interpret biologically. The indices are the mean. number of days per annum when moisture is available for plant growth, tbe mean temperature on days when moisture is available for plant growth (wet season temperature),. and the mean temperature when moisture is not available for plant growth (dry season temperature). Based on these three.indices the grassland biome in South Africa call be distinguished from neighbouring biomes. The fynbos and succulent karoo biomes have rainfall in winter. The grassland, nama-karoo and savanna biomes have' rainfall in summer. The forest biome experiences rainfall throughout the year. Of the summer rainfall biomes, the quantity of water available in the grassland biome b greater than in the nama-woo, similar to savanna, but less than forest. Grasslands experience cooler dry season temperatures than savannas. The localised distribution of woody plants within the. grassland biome suggests that it is the effect of climate on the fire regime that may be of overriding importance h'l determining the distribution of the biome as a whole. Woody elements are restricted to sites that are either protected from fire, or experience fires of lower intensity than sites that support- grassland, The unifying feature of the grassland biome is its proneness to fire. The presence of a warm, moist season promotes plant production and leads to a high standing crop close to the ground. The prolonged dry season causes vegetation to dry out annually, rendering it flammable. More arid biomes have plants more widely spaced, making it difficult for fire to spread. In more mesic biomes where rainfall is less sea.sonal than in the grasslands or savannas, fuels do not dry out sufficiently to ignite, A number of additional climatic features may promote burning in the grassland biome, It has the highest lightning density of all South Africa's biomes. 'tVarm, dry 'berg' winds desiccate fuels and 1 omote burning in the more mesic grasslands, The 'curing' of the grass sward due to dry season frost and temperature drop is important in establishing early dry season flammability. Savanna trees are fire tolerant, but they appear sensitive to the cold temperatures prevaient in the grassland biome in. the dry season, The relationship between the distribution of functional characters of grassland plants and environmental conditions was investigated. The distincrion between sweetveld, mixed veld and sourveld was recognised as one of the most Important functional features of South Africa's grasslands, The distribution of these vegetation types was examined in detail. Sweetveld occurs In warm, dry areas; sourveld in cool, moist areas. There Is overlap between these tyP.Js that Is dependant on soil nutrient status. Sweetveld that occurs in climatic conditions that would be expected to support mixed veld and sourveld, is on soils derived from basic parent material, including basalt, dolerite, gabbro and norite. Similarly, sourveld that occurs in areas that climatically would be expected to support sweetveld, is on soils derived from acid parent material such as sandstone and quartzite .. Soil nutrients that are most highly correlated to the occurrence of these three veld types are phosphoms availability and an index of nitrogen mineralization potential. 'l'here is an increase in bot; available phosphorus and the index of readily mineralizable nitrogen from sourveld to mixed veld to sweetveld. These features am inc01).10111tedinto a conceptual model that relates the distribution of these grassland types to carbon and nitrogen metabolism, with the role of phosphorus either similar to nitrogen, or else it may act indirectly by affecting the. rate of nitrogen mineralization, Nitrogen mineralization OCcursat lower water availability than carbon assimilation, and its temperature optimum is higher than that of carbon assimilation. Where nitrogen mineralization is favoured ielative to carbon assimilation, sweetveld is likely to (}C(.1\Xr. Where carbon assimilation is. favoured relative to; nitrogen mineralization, sourveld is likely to occur ....Soil texture affects the balance between these two processes in the degree to wm.r;h it protects soil organic matter, and thereforv the size of the nitrogen and ph_QSPllO_rOll.S pools. Changes in the rlj,stribution of South Africa's b~\omesfor a scenario of climate change are predicted using the biome model developed in this study. This illustrates the value of developing predictive models.
MT2017
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Moyo, Christabelle S. "Perceptions of rural communities on indicators and determinants of women empowerment: a case study of Makhado Municipality in Limpopo Province." Thesis, 2013. http://hdl.handle.net/11602/78.
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Chipu, Sello Tlou Levy. "Institutional capacity of local municipalities in the delivery of services to communities : a case study of the Polokwane Municipality in Limpopo Province." Thesis, 2011. http://hdl.handle.net/10386/478.
Full textAbstract:
Thesis (M. Dev.) --University of Limpopo, 2011A large percentage of the national budget goes to municipalities to provide services to communities. Since 2000, National Treasury has been increasing the budget to municipalities to enable them to deliver better quality services and to expand the provision of basic amenities. Despite this huge financial investment, there is still poor access and use of social and infrastructure services by most communities in South Africa. The primary aim of this study is to investigate the institutional capacity of municipalities in delivering services to communities: a case study of the Polokwane Municipality in Limpopo. This case study used various data-collecting methods such as interviews, documentation and archival records to come to a conclusion. An interview schedule was used in this study to allow the key respondents to give more detailed information about the problems or challenges facing the municipality in delivering services. The study concluded that the Polokwane Municipality has the necessary institutional capacity to deliver on its constitutional mandate. However, there are specific capacity challenges that need to be addressed.
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Tshifura, Rudzani Alice. "An Assessment of Algae and cyanotoxins in small-holder Aquaculture farms in Vhembe, South Africa." Diss., 2018. http://hdl.handle.net/11602/1207.
Full textAbstract:
MESHWRDepartment of Hydrology and Water Resources
In South Africa, inland aquaculture is on the increase, especially among the rural communities. Thus aquaculture is able to provide a source of employment and improve rural incomes. This study assessed algae species and their cyanotoxins in small holder production in Vhembe district, Limpopo, South Africa. Thirteen study sites were selected to assess the algae species and their cyanotoxins. The water samples were collected in four quarters and analysed for water temperature, pH, total dissolved solids, Electrical conductivity, phosphates, nitrates, chlorophyll, cyanobacteria, cyanotoxins, metal species and quality of the water in the fish ponds. In the 1st quarter of the year there was variation in Water Temperature (23.7oC-31.4oC), pH (5.5-9.6), EC (3.82-46.8μS/cm), TDS (2.4-45 mg/L), Phosphate (0.0-1.09mgL-1), Nitrates (0.0-1.00mgL-1), Chlorophyll-a (5.8-11.5mg/m-3). In the 2nd quarter there was variation inwater temperature (22.4-25.0oC), pH (6.6-8.8.9), EC (19.23-21.47μS/cm), TDS (12.5-17.9 mg/L), Phosphate (1.64-1.84mgL-1), Nitrates (1.02-1.88mgL-1), Chlorophyll-a (4.6-15.6mg/m-3). In the 3rd quarter there was variation for water temperature (22.9-25.0oC), pH (7.5-9.1), EC (7.91-293.3μS/cm), TDS (11.7-180.9 mg/L), Phosphate (1.10-1.80mgL-1), Nitrates (1.28-1.84mgL-1),Chlorophyll-a (6.8-15.6mg/m-3). In the 4th quarter there was variation forwater temperature (23.5-30.3), pH (7.1-9.3), EC (18.24-623μS/cm), TDS (23.7-136.4 mg/L), Phosphate (1.45-1.99mgL-1), Nitrates (1.43-1.68mgL-1), Chlorophyll-a (6.6-25.9mg/m-3). The metal content of the fish pond water was variable throughout the year but with moderate levels of Al, Cd, Cr, Mn, Fe, Cu, Zn and Ba were found. The metal Fe, exceeded the DWAF guideline values during this first quarter. The presence of Cd in the fish pond water could be attributed to rainfall eroding the earthen embankments of the fish pond. The results of physico-chemical parameters promotes the growth of cyanobacteria in the fish ponds. Flow cam and SEM were used to identify the cyanobacteria species and most cyanobacteria identified are hazard to human health, fish and other aquatic organisms. Molecular technologies were used to identify cyanotoxins and there was no cyanotoxins detected which was concluded that during collection of water samples no cyanobacteria produced toxins.
NRF