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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
41

Using nutritional quality of forage and faeces for predicting sustainable livestock and game stocking rates at Pniel Estates in Northern Cape, South Africa

Mbatha, Khanyisile R. 03 1900 (has links)
Thesis (PhD)--University of Stellenbosch, 2010. / The aim of the study was to assess the importance of spatial and temporal variation in diet quality and abundance for determining sustainable stocking rates on commercial, communal and game ranches in a semi-arid savanna, with the ultimate goal of avoiding land degradation in the long term, to provide sustainable livelihoods in rangelands and to make policy that will help in managing the available natural resources in the rangelands. Thus, firstly the effects of grazing, fire, nitrogen and water availability on nutritional quality of grass in semi-arid savanna was assessed. Secondly, spatial and temporal variation in plant quantity and quality among management (commercial, communal and game) types and habitat types (open savanna, rocky, shrubby and pans) and stocking rates in different management types were determined. Thirdly, the quality and quantity of variation inside and outside herbivore exclosures among commercial, communal and game management and habitat types in the semi arid savanna were estimated. Fourthly, faecal profiling was used to assess the effects of different management types on diet quality in semi-arid savanna. Lastly, policy based on the results of the present study was formulated.
42

Certification standards for sustainable game ranching in the Northern Province, South Africa

Du Toit, Engela A. 03 1900 (has links)
Thesis (MSc)--University of Stellenbosch, 2000. / ENGLISH ABSTRACT: Formal systems of environmental management and certification for activities associated with extensive land use, relate mainly to forestry. The emergence of forest certification largely originates from the issue of tropical deforestation and the associated boycott campaigns against tropical timber. At the United Nations Conference on Environment and Development in Rio de Janeiro in 1992, a new set of international norms were set in the form of Forest Principles. These were non-binding and together with international initiatives, such as the Tropical Forestry Action Programme and the International Tropical Timber Organisation have failed to decrease deforestation. New efforts to encourage sustainable forestry through forest certification were made by Non Governmental Organisations which collaborated with the private sector in developing new policy instruments. They followed the trend of eco-labelling in an attempt to link green consumers to producers whose aim it is to improve management practices. The Forest Stewardship Council (FSC) was established. The FSC system relies on forest management principles and criteria approved by itself and is based on performance standards. The International Standards Organisation (ISO) also developed a management standard based on the principle of continuous improvement. ISO developed the ISO 14001 standard for the certification of Environmental Management Systems which is applicable to any industry concerned with the environment. From questionnaire surveys carried out among a sample of private game ranch owners/managers in the Northern Province, current standards of management were established. It was found that private owners/managers rely mostly on their own experience and knowledge. Information about management on game ranches is rarely available and only major concerns and most visible problems are attended to. Guidelines with standards for an Environmental Management System (EMS) according to the ISO 14000 series were drawn up from the results of the surveys and a literature review. A checklist of principles and criteria which could be used for the certification process was also developed. The final objective is to attain quality game ranch management which is environmentally sensitive, socially aware/beneficial and economically viable. This is crucial for the conservation and preservation of the natural systems in South Africa in which private land owners playa major role. / AFRIKAANSE OPSOMMING: Formele omgewingsbestuursisteme en sertifisering vir aktiwiteite wat geassosieer word met ekstensiewe grondbenutting, word hoofsaaklik gekoppel met bosbou. Die konsep van sertifisering het tot stand gekom as gevolg van die omstredenheid rondom ontbossing en die gassosieerde sanksies teen tropiese hout. By die Verenigde Nasies Konferensie oor Omgewing en Ontwikkeling in Rio de Janeiro in 1992 is 'n nuwe stel internasionale norme daargestel in die vorm van Bosbeginsels. Hierdie was nie-bindend en saam met internasionale inisiatiewe soos die Tropiese Bos Aksie Program en die Internasionale Tropiese Hout Organisasie het hulle gefaal om ontbossing te verminder. Nuwe pogings om volhoubare bosboupraktyke aan te moedig is aangewend nadat Nie-Regering Organisasies en die privaatsektor saamgewerk het om nuwe beleidsinstrumente te ontwikkel. Hulle het die neiging vir die "eko-etiket" nagevolg in 'n poging om omgewingsbewuste verbruikers in kontak te bring met produseerders wat gemoeid is met verbeterde bestuurspraktyke. Die Forest Stewardship Council (FSC) het tot stand gekom en hulle sisteem sluit bosbestuursbeginsels en kriteria in wat deur hulleself goedgekeur is en gebaseer is op werkverrigtingstandaarde. Die Internasionale Standaarde Organisasie (ISO) het ook 'n bosbestuurstandaard opgestel gebaseer op die beginsel van kontinue verbetering. ISO het die ISO 14001 standaard opgestel vir Omgewingsbestuursisteme wat van toepassing gemaak kan word op enige industrie wat gemoeid is met die omgewmg. Na afhandeling van vraelys opnames onder privaat wildsplaas eienaars/bestuurders, is daar vasgestel wat die standaard van bestuur tans in die Noordelike Provinsie is. Privaat eienaarsIbestuurders maak meestal staat op hulle eie ondervinding en kennis. Inligting oor die bestuur van die wildsplase is nie geredelik beskikbaar nie en slegs die mees sigbare en grootste probleme word bestuur. 'n Riglyn met standaarde vir 'n Omgewingsbestuursisteem volgens ISO is opgestel vanaf resultate van die opnames en 'n literatuurstudie asook 'n "Checklist" wat beginsels en kriteria insluit wat gebruik kan word in die sertifiseringsproses is ook ontwerp. Die finale doel is om kwaliteit bestuur te bewerkstellig wat omgewingsensitief, sosiaal bewus/voordelig en ekonomies lewensvatbaar is. Laasgenoemde is uiters belangrik aangesien privaat grondeienaars 'n sleutelrol speel in die bewaring en preservering van die natuurlike sisteme in Suid-Afrika.
43

Landscape function analysis and ecological management of an agricultural landscape

Donald, Ann Jean 03 1900 (has links)
Thesis (MSc (Geography and Environmental Studies))--University of Stellenbosch, 2005. / In the past, development was allowed in agricultural areas which would not be acceptable under current planning policy. There is a growing need to develop and maintain highly productive and ecologically stable agricultural systems. One approach to encourage better land management and utilisation is the international certification of a farm’s production practices.
44

Economic contribution of backyard gardens in alleviating poverty in the rural communities of Bojanala Platinum district municipality, in North West Province, South Africa

Mokone, Neo William 07 1900 (has links)
Backyard gardens has been identified as one of the possible solutions to some of the issues surrounding poverty alleviation in the Bojanala Platinum District Municipality. The main objective of the study was to determine the economic contribution of backyard gardens in alleviation of poverty in rural communities of Bojanala Platinum District Municipality in the North West Province, South Africa. The study used purposive sampling for data collection from the study respondents which enabled the researcher to select a sample with experience and knowledge about the study variables. The questionnaire used as data collection instrument was pretested, validated and subjected to reliability test to improve the efficiency of the use of the questionnaire. The collected data was sorted, coded and analysed using Statistical Package for Social Science (SPSS) Version 23.0 software. Frequency count and percentage were used to summarize the data into tables and graphs. The linear multiple regression model specification was employed to examine the demographic and socio-economic factors (predictors) that influence the generation of income from backyard gardens. Multinomial logistics regression model was also used to determine factors influencing the respondents’ objectives for the Backyard gardens, while the logit regression model was used to analyse determinants of the proportion of backyard land used for backyard farming by respondents/growers. The findings of the study are that: more females (68.2%) were involved in the study than males (31.8%); youth involved in the study were 27.7%; the majority (60.4%) of respondents are in the age group of 41-70 years of age; majority (69.5%) of respondents had matric education, 20.9% had tertiary education, and 3.6% had below matric education whilst 5.9% had no formal education; most of respondents are unemployed (86.6%); 32.2% of respondents are dependent on pension as their source of income, 12.3% depend on grant, 15% depend on monthly salaries, 0.5% depend on investments, 2.3% depend on remittance, and 18.6% depend on piece jobs, whilst 19.1% reported other source of income; majority (99%) of respondents reported that backyard garden contribute a significant proportion to both household income and food security, whilst 1.0% did not agree; 40% of the respondents could not manage to farm the whole garden area, while 60% were able to farm the entire garden area; the majority (70.9%) of respondents provide own solutions to their backyard garden challenges; majority (53.7%) of respondents reported that extension officers never visited their gardens, whilst 46.3% had extension visits on weekly, monthly and quarterly bases; 23.2% of the respondents created permanent employment while 34.1% of them created seasonal employment. The results of the OLS regression analysis showed that gender of respondents, with formal employment, ownership of a farm besides the Backyard garden (BYG) by respondent, farmers’ years of experience in farming and annual income from the sale of livestock by respondent had positive and statistically significant influence on the annual income from Backyard garden with all other factors held constant. The results of the multinomial regression analyses show that a unit change in number of years involved in backyard gardening (YRSBG) does not significantly change the odds of being classified in the 4th category of the outcome variable (Produce to help the needy, the poor, to feed the orphans, and for home based-cares around their communities = 4) relative to the first or second or third categories of the outcome variable, while controlling for the influence of the others. On the other hand a unit change in being employed (EMPLO) and involved in non-farm activities (NFA) do significantly change the odds of being classified in the 4th category of the outcome variable relative to the second or third categories of the outcome variable, while controlling the influence of the others. The Logit coefficient estimate associated with Age, Income per month from BYG, Engage in non-farm activities, Years of experience in gardening, Proportion of produce consumed, having a business plan, Own a farm besides BYG and to lease your backyard have statistically significant impact on respondents area of cultivation for BYG with other factors held constant. Policies to improve BYG in the district should be informed by the aforementioned variables from the results of the inferential analyses. / Agriculture / M. Sc. (Agriculture)
45

Climate change and agricultural production in Limpopo Province : impacts and adaptation options

Maponya, Phokele Isaac 12 1900 (has links)
The primary aim of my research was to identify the impacts and adaptation options of climate variability and change on agricultural production in Limpopo province. The following objectives were identified: To understand the impacts of climate variability and change on agricultural production in Limpopo province , To assess the impacts of climate variability and change on agricultural production in Limpopo province and To identify adaptation measures that reduces the impacts of climate variability and change on agricultural production in Limpopo province. A representative sample of 300 farmers aged 16- 65+ years (46 percent males and 54 percent females) participated in the study. The study involved Sekhukhune and Capricorn districts, with 56 percent farmers in Capricorn and 44 percent in Sekhukhune district. The following 11 local municipalities were visited: Elias Motsoaledi, Makhuduthamaga, Fetakgomo, Ephraim Mogale, Tubatse, Lepelle Nkumpi, Blouberg, Aganang, Polokwane, and Molemole. The Limpopo province is one of the poorest provinces in the country, characterized by high unemployment rate, poverty and lack of access to a range of resources that frustrate majority of people ability to secure their livelihoods. In this study the province's economic, biological and physical environment were highlighted. The study further covers the province, s farming enterprises, systems, categories, infrastructure as well as other constraints that maybe facing the emerging farmer in the province. It is assumed that the majority of farmers in both the Capricorn and Sekhukhune districts are using different coping and adaptation strategies in order to increase their crop yields. Literature studies show that climate variability and change adaptation strategies vary from area to area due to agro ecological zones and the harshness of the effects of climate variability and change. It has also been noted that climate change is fast pushing the poorest and most marginalized communities beyond their capacity to respond. This study draws on lessons learned, experiences, and other existing research on climate change impacts and adaptation across the globe. It sets out what is needed to enable people living in poverty to adapt to climate change, and a range of interventions that are available across climate - sensitive sectors. The study has provided a literature review of the impact of climate change on the agricultural sector. In fact, it has documented some of the likely impacts of climate change based on International, continental, regional, national and provincial agricultural sector. The study highlighted the impact of climate change also on various climate - sensitive sectors including understanding water resources, forestry, natural ecosystem human health, infrastructure and coastal zones. This research also confirmed that being a full time farmer, gender, information on climate change, information received through extension services and adaptation to climate change are some of the important determinants of agricultural production, food scarcity and unemployment. A worrying situation is reviewed globally in this study and it can be concluded that climate variability and change is affecting every sector in society and it needs urgent attention. Statistics was used to determine climate variability and change impact on agricultural production. Results indicate that farmers are aware that Limpopo province is getting warmer and drier with increased frequency of droughts, changes in the timing of rains, observed trends oftemperature and precipitation. The study also presented perceived adaptation strategies used by farmers in Limpopo province. Some of their perceived adaptation strategies included: (a) Soil management strategies, (b) Water management strategies and (c) Others like use of subsidies and use of insurance. Other important adaptation options being used by farmers were also discussed in this study including different adaptation measures against colds, heat, frost, abnormal wind, hail, lack of extension support, nematodes, insecticides, worms, temperature and rainfall. The results of this study are potentially valuable to the agricultural sector considering the threats that climate change poses across climate sensitive sectors. / Environmental Sciences / D. Phil. (Environmental Management)
46

Institutional change and ecosystem dynamics in the communal areas around Mt Coke State Forest, Eastern Cape, South Africa

Cundill, Georgina January 2005 (has links)
Through a combination of theoretical discussion and case study analysis from two villages in the Eastern Cape Province, South Africa, this thesis explores the relationship between institutional change and ecosystem dynamics through a multi-scale approach that combines local and scientific knowledge. Several conceptual approaches were combined in this study. These included; the Resilience perspective, the Sustainable Rural Livelihoods approach, the Millennium Assessment framework and principles, and the Environmental Entitlements approach. Various participatory research techniques were employed which combined with GIS technologies, existing data sets, and historical records. Common pool resource areas are social spaces, where local values attached to resources are institutionally mediated, politically nuanced, economically interpreted and historically situated. Political driving forces at various scales have played a disproportionate role in local level institutional functioning in the case study area. In particular, inappropriate state-lead interventions into land use planning have weakened local level institutions, and have reduced the ability of the linked social-ecological system to cope with change and uncertainty. People and ecosystems become more vulnerable when driving forces such as political upheaval, economic depression and drought over-lap. However, rural people are not mere spectators in the face of these driving forces; they respond both reactively and proactively to ensure resilience to change and uncertainty. Ecosystems at Mt Coke play a key role during times of crisis in rural livelihoods. These ecosystems have undergone various short-term cyclical changes largely in response to rainfall fluctuations, and some longer-term changes linked to political events and trends that have affected management practices and local institutions over time. Orthodox ecological interpretations of ecosystem change appear to ignore four key factors identified in this study: 1) the role of institutions in shaping access to resources, 2) the demand for resources in rural livelihoods, 3) the dynamic interaction between social and natural systems, and 4) the interaction between social and natural systems across scales of analysis. The future of common pool resource management lies in the combination of local and scientific knowledge through an adaptive management approach that encourages learning and adaptation in local level institutional structures.
47

Factors influencing ecological sustainability in the ostrich industry in the Little Karoo, South Africa

Wheeler, Anita January 2014 (has links)
The Little Karoo, situated in the Succulent Karoo biome of South Africa, has been heavily transformed by land use, and only 8.6% of the remaining natural vegetation is considered to be intact. There is ample evidence that the main cause of degradation is the overstocking of ostriches, an industry that has been the major economic driver of the area for more than 150 years. The ostrich stocking rate currently recommended is 22 ha.ostrich⁻¹. A literature review was used to examine the evidence, assumptions and rationale on which recommended and actually implemented stocking rates for ostriches are based. No experimental evidence using ostriches was found that supported the recommended stocking rate as either ecologically or economically sustainable. From the literature, there appears to be a wide gap between what are considered to be economically and ecologically sustainable stocking rates, with the implication that these two aims may be impossible to reconcile when practicing ostrich farming on natural veld. A comparison of recommended with actual stocking rates among land managers in the Little Karoo showed that all land managers far exceeded the recommended agricultural stocking rate of 22.8 ha.ostrich⁻¹. However, the stocking rates reported by land managers to the South African Ostrich Business Chamber were found to accurately reflect actual numbers determined when whole flocks had to be slaughtered after an outbreak of avian influenza. The recommended stocking rate appeared to be irrelevant to ostrich flock breeders and there appeared to be a trade-off between profitable ostrich farming and sustainable land-use practices. This study also investigated the attitudes and behaviour of ostrich farmers. It was found that environmental attitude is most likely the most important characteristic of a land manager to ensure positive conservation behaviour. This characteristic was most prominent in younger land managers with larger farms. The last component of the study integrated the context and complexity of the long term social, economic and ecological sustainability of this industry through the development of a logic model. The results showed a general lack of linkages between industry elements which impact on achieving sustainability targets. Greater collaboration between industry role-players, organized agriculture and conservation organizations is required to find a balance between utilization and conservation in the ostrich industry.
48

The effects of the underutilisation of the restored farmlands in Taung: North West province

Molebiemang, Kaone 17 January 2020 (has links)
The purpose of the study was to investigate the effects of the underutilisation of the restored farmlands in the Taung area of the North West province, South Africa. The study was based on the two communal property institutions: the Sebuemang-Khaukhwe Communal Property Association (CPA) and Rethabile Mosimane Trust. This study was grounded in the theory of the Sustainable Livelihoods Framework (SLF). A qualitative research methodology was used to guide the study, while the SLF was used to guide the study, relevant data gathering methods, and the selection of measuring instruments led to the acceptable findings. The findings of the research study have confirmed that there were some effects of the underutilisation of the land in the two communal property institutions (CPIs). The underlying factors of the underutilisation of the land were found to be the institutional weaknesses of the state, and to a lesser extent, the institutional weaknesses of the CPIs. Furthermore, the findings revealed that the effects on the beneficiaries of the two CPIs, were not as massive as contemplated due to the contribution of the state’s social welfare programme on the livelihoods of the beneficiaries. Some of the effects identified were namely: no farm production, no sale and income of farm production, no home consumption of farm produce surplus and no employment. Additional to that host of the factors of vulnerability there are that rose from them i.e.: poverty, destitution, and emotional effects (frustration and anger) and ultimate conflict eruption in the CPIs. In conclusion, the study made recommendations based on key issues which some are: Adequate livelihoods and technical support by state, state’s policies review, retention of the state’s social welfare support, requesting of the private sector to contribute to land reform and rehabilitation of the old gravel road by a relevant state organ (Dept: Public works). / Development Studies / M.A. (Development Studies)
49

Asset portfolios and food accessibility in a village in Sekhukhune, Limpopo Province

Maponya, Phokele Isaac 30 June 2008 (has links)
This study aims at investigating household food accessibility categories (food insecure, vulnerable, marginal and food secure) of rural households in Sekhukhune district of Limpopo province. The study is based on five wards in Mamone village in the Limpopo province of South Africa. Ten households from each ward were randomly selected for the study. Structured questionnaires administered by enumerators were used to collect information from household heads. In all 50 household heads constitutes the sample size for the study. Data was collected from 20 August 2007 to 25 August 2007. Responses in the questionnaires were tabulated, coded and processed using Statistical Package for Social Sciences (SPSS) programme. Based on comprehensive food security and vulnerability analysis the study showed that over 70 per cent of the sampled households were food insecure. Lack of education, income sources, water source, and infrastructure were some of the important factors contributing to food insecurity. The government should also give special attention to policy measures that guide towards the provision of household assets. It is recommended that special attention be given to measures that will provide the necessary factors that negatively affect household food security and vulnerability. / Agriculture, Animal Health and Human Ecology / M.A. (Human Ecology)
50

GIS-based land suitability assessment and allocation decision-making in a degraded rural environmen

Breytenbach, Andre 10 1900 (has links)
Thesis (MSc)--University of Stellenbosch, 2006. / ENGLISH ABSTRACT: Rural development problems faced by the impoverished communities in the Transkei, South Africa, are numerous, and environmental degradation has already taken much of its toll. By working at a micro-catchment-level both the socio-economic and biophysical appreciation of the land resources were captured as encapsulated in the concept of resource management domains. Participatory decision-making allowed functional land use goals and evaluation criteria to be incorporated into computerised multi-criteria evaluation and multi-objective land use allocation models in order to reach an idealised or more sustainable land use situation. In the execution of the decision-making process seven procedural steps were followed, which are discussed in detail and applied in the case study. Synthesis of the results emphasised the envisaged rural planning potential of the methods used. / AFRIKAANSE OPSOMMING: In terme van plattelandse ontwikkeling staar talle probleme die behoeftige gemeenskappe van Transkei, Suid-Afrika, in die gesig en omgewingsdegradering neem ongehinderd sy tol. Deur op ‘n mikro-opvangsgebied vlak te werk kon beide die sosio-ekonomiese en biofisiese waarde van die gebied se hulpbronne bepaal word en uitgebeeld word in hulpbron bestuursdomeine. Deur deelnemende besluitneming is funksionele grondgebruiksdoelwitte en evaluasie kriteria gebruik in gerekenariseerde meervoudige kriteria evaluering en veeldoelige grondgebruiksaanwysingsmodelle ten einde die ideale of ‘n meer volhoubare grondgebruik situasie te verkry. Vir die uitvoering van die besluitnemingsproses is van sewe opeenvolgende stappe gebruik gemaak en die uitvoering daarvan word in diepte bespreek in hierdie gevallestudie. Sintese van die resultate het die potensiaal van hierdie beoogde landelike beplanningsmetodes beklemtoon.

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