This thesis examines the concept of sustainability and the implications of large-scale hydroelectric development for the sustainability of communities in the Canadian portion of the Columbia River Basin. A literature review of sustainability provides a background for discussion and a working definition of sustainability is proposed for consideration throughout the study. An overview of the Canadian experience with hydro development and its ecological, social and economic impacts provides a context within which to consider issues related to sustainability. The Columbia River Basin is the setting of a case study of sustainability and hydro development in British Columbia. The Kootenay region has been affected by extensive hydro projects since the early 1900s on the Kootenay River and most significantly by large dams built on the Columbia system as a result of the Columbia River Treaty. Communities in the Kootenays have borne a large share of the impacts of these dams. The resulting degradation of fisheries, wildlife and forests has jeopardized the integrity of the region’s resource base and its capability to enhance the quality of life of those living within the Columbia River drainage basin. Future hydroelectric planning should address the sustainability of the ecological, social and economic systems affected by this land use change and ensure that local communities are included in project decision-making. Increased awareness of the consequences of large-scale hydro projects during planning stages may enable sustainable development to occur. / Science, Faculty of / Resources, Environment and Sustainability (IRES), Institute for / Graduate

Department of Business Management / MPM

No description available.

Applied economics studies target effects that can be relatively small. This dissertation delves into some statistical obstacles to the accurate estimation of such effects, with a particular focus on the concepts of statistical power and exaggeration---imprecise studies tend to produce inflated estimates of the effect of interest. It explores implications of low power and exaggeration that are specific to applied economics studies and their design. Through the example of studies on the acute health effects of air pollution, the first chapter identifies tangible drivers of exaggeration that extend beyond small effects and a limited sample size. This analysis uncovers an overarching mechanism, studied in Chapter 2, that induces exaggeration when using causal identification strategies. This subsequent chapter emphasizes that causal approaches only focus on a subset of the variation---the exogenous part---reducing the precision of the study and increasing risks of exaggeration. The final chapter further broadens the discussion to analyze design choices in light of the multiple goals of causal inference studies; these studies aim not only to identify an average effect but also differentiated effects across subgroups, as well as producing insights that extend beyond the population considered. Overall, this dissertation underlines the manifold implications of design choices on non-experimental economic studies, with the aim of contributing to more accurate estimations of effects to better inform policymaking.

This work considers how large-scale datasets and novel machine learning methods can be applied to challenges in climate and sustainability, with a particular focus on agriculture. Effectively leveraging these advancements for sustainable development research requires answering two questions: first, how can complex data be translated into useful and accurate information? And second, under what circumstances does this information offer real insight into an important problem? In answer to the second of these questions, the research in the three chapters of this dissertation falls broadly into one of two categories: problems for which high spatial- or temporal-resolution data is necessary but infeasible to collect at scale (Chapters 1 and 3); and problems for which the structure of relationships between features and outcomes is complex, with important non-linearities, interactions, or other nuances that may be overlooked by traditional approaches (Chapters 1 and 2). Both such categories of problem are common in the domain of agriculture, an industry which is critical for food security and economic well-being, but highly susceptible to fluctuations in weather and climate. In Chapter 1, I introduce and validate a method for creating high-resolution estimates of planting and harvest dates for United States crops with satellite imagery. This data is an important input for many research applications, but is only tracked at the state level. The resulting dataset is then used to generate more accurate measures of the weather conditions crops are exposed to during their growing season, and thus more precise estimates of how these conditions impact yields. These estimates suggest a 17% larger impact of extreme heat (>29C) on crop yields than previously documented, with substantial variation in heat sensitivity over the course of the growing season. However, the overall impact of increased temperatures is partially offset by a reduced estimate of growing season duration and a 276% increase in the estimated benefits of warm (10-29C) temperatures. Finally, I present novel evidence that farmers use early planting as a form of adaptation to warming, with planting dates shifting earlier by 0.13 days for each additional 30C day during the growing season. Chapter 2 presents an even more flexible formulation for estimating US crop yields. I introduce a deep learning model that predicts yields directly from daily weather data, and show that it reduces out-of-sample error by 10.7% relative to standard linear modeling approaches. Using interpretable machine learning techniques, I demonstrate that this model learns a number of nuanced patterns consistent with expectations from agronomic theory, including spatial and geographic variation, interactions between weather features, and nonlinearity over weather feature values. Over several simulations, these models estimate future impacts of warming that are two to three times less severe than prior modeling approaches would suggest. However, the complexities of causal identification with highly flexible models mean that these results must be interpreted with caution; primarily, they suggest that estimates of climate impacts may be highly sensitive to feature selection, and to precise trends in warming over the course of the growing season. Finally, Chapter 3 turns to smallholder farms in Kenya, as part of research done with support from Atlas AI. A collection of approaches for real-time yield monitoring at the field level are introduced and tested, using satellite-based assessment of vegetation health. I discuss a remotely-sensed proxy for crop yields for use in environments where reliable ground truth data is unavailable, and present a model that can capture 73.5% of variation in this yield proxy by roughly 6 weeks post-planting. A range of approaches are evaluated for incorporating location- and crop-specific features, handling low volumes of training data, and adjusting for variable timing of satellite imagery collection. Taken together, these chapters demonstrate the value of remote sensing and machine learning for understanding the impacts of climate on crops and identifying strategies for adaptation. They also emphasize the complementarity between novel machine learning approaches and traditional statistical and economic methods: in Chapter 1, for example, satellite imagery is used to generate a novel dataset for analysis with more standard models; and in Chapter 2, I present a non-parametric approach to feature discovery for future causal inference work. Finally, these chapters demonstrate that estimates of climate impacts can be highly sensitive to what features are used and how they are encoded; this underscores the importance of careful consideration in constructing accurate feature inputs, and caution in interpreting the results of any one model.

Die voorbestaan van die mensdom is nou verweef met die toestand waarin die omgewing verkeer. Menslike aktiwiteite het 'n groot impak op die omgewing, terwyl die omgewing weer die mens se lewensgehalte bepaal. Hierdie studie is dan daarop gemik om deur omgewingsopvoeding, die mens te lei tot omgewingsgesonde gedrag met die oog op volhoubare ontwikkeling. Ten einde hierin te slaag, word die verskillende omgewingsprobleme en die redes daarvoor eers uitgeklaar. Daarna word die faktore wat tot omgewingsagteruitgang kan lei, ondersoek. Hieruit blyk duidelik <lat die wereld en die RSA, in die toekoms digter bevolk, meer besoedel, ekologies minder stabiel en daarom meer gevoelig vir natuurrampe gaan word. Soos uit die proefskrif sal blyk kan omgewingsopvoeding 'n positiewe bydrae tot bierdie omgewingsprobleme lewer. Om daarby uit te kom word daar dus eers 'n kort bistoriese oorsig van omgewingsopvoeding gegee. Die rol en bydrae wat enkele internasionale organisasies tot omgewingsbewustheid gelewer het, word ondersoek. Daar word 'n oorsig gegee van verwikkelinge in die RSA en die invloed van die Aardeberaad op omgewingsopvoeding in die RSA, word ontleed. Ten einde outentieke omgewingsopvoeding te vergestalt word aanvaar <lat die mens met sy geboorte in 'n wereld gewerp word waaraan hy slegs met sy dood kan ontsnap. In hierdie gesitueerdheid in die wereld as leefnrimte, moet hy sin aan sy bestaan gee, terwyl hy ook 'n poging moet aanwend om die omgewing te verbeter, as voorsorg vir die oorlewing van toekomstige geslagte. Met inagneming van die opvoedings- en omgewingsrelasie waarin die mens tot sy omgewing staan, word die essensiele kenmerke van omgewingsopvoeding blootgele, ten einde moontlikheidsvoorwaardes te stel vir outentieke omgewingsopvoeding. Besondere Idem word gele op omgewingsgedrag wat volhoubaarheid nastreef. Dit alles kulmineer in omgewingsgesonde gedrag wat as oorkoepelende doelstelling vir omgewingsopvoeding gestel word. Omdat die mens se gedrag teenoor die omgewing bepaal word deur sy omgewingsetiek, word drie verskillende benaderings tot omgewingsetiek onderskei. Klem word gele op die noodsaak van omgewingsgeletterdheid. Ten einde die mens se optrede teenoor die omgewing te probeer verstaan, word drie omgewingsgedragstyle ontleed. Twee wetenskaplike aardgenese-hipoteses word beskryf vir verdere duidelikheid oor omgewingsgedrag. Aan die einde van die studie, word enkele beginsels gestel wat kan lei tot die ontwikkeling van omgewingsgesonde gedrag met die oog op volhoubare voortbestaan. / Mankind's survival is interwoven with the state of the environment. Human activities have a great impact on the environment, while the environment, again, determines the quality of man's life. This study aims to aid mankind, through environmental education, to environmentally sound behaviour with an eye on sustainable development. To attain this, the different environmental problems and their causes, are sorted out first. Then the factors that can lead to environmental degradation are investigated. From this it is quite clear that in the future, the world and the RSA will be more densely populated, become more polluted, be ecologically less stable and will therefore be more sensitive to natural disasters. Because environmental education can make a positive contribution to this, a short historical survey of environmental education is given. The role and contribution of some international organisations is investigated. Developments in the RSA are surveyed and the influence of the Earth Summit on environmental education in the RSA is analysed. At birth, mankind is thrown into a world from where he can escape only at death. In this world in which he has to stay, he must give meaning to his existence, while also trying to improve the environment to guarantee the survival of coming generations. Bearing in mind the educational and environmental relationship between any human being and his environment, the essential characteristics of environmental education are exposed in order to set possible conditions for authentic environmental education. Special emphasis is placed on environmental behaviour aimed at sustainablility. All this culminates in environmentally sound behaviour that acts as the overall aim for environmental education. Because man's environmental ethic determines his behaviour towards the environment, three different approaches to environmental ethics are distinguished. Emphasis is placed on the necessity for environmental literacy. In order to try to understand man's behaviour towards the environment, three styles of environmental behaviour are analysed. For further clarification of environmental behaviour, two scientific earth genesis hipotheses are also described. In conclusion, this study leads to certain principles that can lead to the development of environmentally sound behaviour aimed at the sustainable survival of mankind. / Educational Studies / D. Ed. (Filosofie van die Opvoeding)

Given the livelihoods challenges which face many rural communities, understanding a community’s livelihoods dynamics and opportunities is one major step to developing workable options to address the challenges. This study has focused on one rural community and used the five determinants of the Sustainable Livelihoods Approach to describe the livelihoods situation in Embui sub-location in Machakos County, Kenya. Residents of Embui have had to deal with the fact that traditional production systems are not sufficient to provide for their livelihoods needs. The community and continues to be challenged by limited capital for diversifying income sources, low skills and limited social and economic services. This study recommends support to marketing of locally produced artifacts, improved access to capital and provision of water for irrigation along with extension services as the key areas of support to improve the living standards of the residents of Embui / Development Studies / M.A. (Development Studies)

Thesis (MPhil (School of Public Management and Planning))--University of Stellenbosch, 2006. / The word ‘ecovillage’ is evocative of a kind of human settlement that exists in complete harmony with nature and examples of such settlements are indeed in existence almost everywhere in the world, some nearly half a century in the making. The Gqunube Green Ecovillage near East London can hardly be described as one of a proliferation of such settlements in South Africa, but it is anticipated that an examination of that project will contribute to the limited academic literature on the topic of sustainable human settlement. In Chapter 1, this thesis introduces the Gqunube Green Ecovillage and, in the following six chapters, traces its origins and demonstrates how models for ‘ideal’ human settlement developed. It explains how and why an international ecovillage movement reached South Africa and how Reverend Roger Hudson responded to that movement by starting the Gqunube Green Ecovillage in South Africa. The conclusion is that Reverend Hudson has achieved his primary objective, namely the establishment of an ecovillage, but the challenges described in this thesis have been significant. One of the most significant potential stumbling blocks to the future smooth management of Gqunube Green is its own regulatory environment that dictates the relationship between the settlers and their ecovillage. The proposed sociocratic management style, combined with a strongly spiritual, eco-theological objective, is driven by a strongly worded and rule-orientated ecovillage constitution that is shown in Chapters 2 and 3 to have the potential to both alienate and unite the inhabitants of the Gqunube Green Ecovillage – depending on how it is interpreted and enforced. The external regulatory environment, both enabling and restricting development, is analysed in Chapter 4. National, provincial and local government legislation, policies and guidelines intersect to influence the progress of the Gqunube Green Ecovillage, creating opportunity for controversy between conservationists and developers. However, the debates between the various interest groups over the appropriateness of various development options for the east bank of the Gonubie Estuary were largely incidental and somewhat irrelevant to the delays in the development of the Gqunube Green Ecovillage that are described in Chapter 5. Although bureaucratic delays in the formal process of development have restrained the full rollout of the ecovillage project, the Gqunube Green Ecovillage was eventually established at the end of 2005 and the chronology leading to this milestone is described in Chapter 5. Chapter 6 of this thesis examines the timing of the Gqunube Green Ecovillage project within a changing and enabling paradigm shift, enabled by cooperative local government and efforts at the integration of legislation and policy to align with the constitutional aims of sustainable development. The concept of an ecovillage is not always acceptable to everyone as the ideal development model, especially when big business has a stake. However, it has been argued that the very fact that the establishment of an ecovillage has succeeded where big business was about to establish itself is a victory in itself for the founders of the Gqunube Green Ecovillage.

Thesis (MPhil (Sustainable Development Planning and Management))--University of Stellenbosch, 2009. / Despite our best planning and Environmental Impact Assessment (“EIA”) efforts we seem to be failing in our pursuit of Sustainable Development. In South Africa we find ourselves confronted with the harsh reality that after 14 years of democracy, more than a decade of compulsory EIA, and 12 years of legislated Integrated Development Planning (“IDP”), poverty remains widespread and persists alongside affluence, while inequalities are also growing. In addition South Africa’s life-supporting ecosystems continue to deteriorate at an alarming rate. Critically reflecting on what is going wrong, it is clear that there is an emergent consensus in the discourse that points towards the inadequate consideration of alternatives. A literature review of the historical development and social construction of the concept of “sustainable development”; a theoretical analysis of sustainable development, planning and EIA; as well as an analysis of the legislative and policy framework for EIA and IDP in South Africa, shows that the consideration of alternatives is the “heart” and “soul” of EIA and IDP, and therefore of the pursuit of sustainable development in South Africa. A content analysis of a sample of EIAs and IDPs undertaken and produced in the Western Cape Province of South Africa, however, indicates that alternatives are not being adequately considered during the current practice of EIA and IDP in South Africa – resulting in only slightly less unsustainable development and a perpetuation of the unsustainable and unjust “business-as-usual” development types and patterns of the past. EIA and IDP can never be, and were never supposed to be completely separate processes. EIAs must be considered within the context to be provided by the sustainable development vision, goals and objectives to be formulated in, and the desired spatial form and pattern of land use to be reflected in an area’s IDP and Spatial Development Frameworks (“SDF”). Properly informed Strategic Environmental Assessment based IDPs and SDFs, refined by Environmental Management Frameworks, should therefore provide the strategic context and decision-making framework for the consideration of need, desirability and alternatives; with the actual and potential socio-economic and ecological impacts of a specific proposal to be considered during the project-level EIA. Project-level EIAs in turn providing “feedback” to the planning processes to ensure reflexivity and continued improvement. The improved integration and convergence of IDP and EIA decision-making methodologies and practice are therefore paramount to the adequate consideration of alternatives and the pursuit of sustainable development in South Africa. While the challenges to be addressed by EIA and IDP in South Africa are complex and ‘wicked’, and the pursuit of sustainable development solutions is therefore also a complex and ongoing process, the need for fundamental alternatives that will lead to drastic and urgent change for the better are, however, just as real. The urgency and importance of the sustainable development challenge for South Africa calls for bold decisions and the search for sustainable alternatives that will deliver urgent and fundamental change for all South Africans. The practice of EIA and IDP should be driven by these realities and reflect the need for urgent and fundamental change.

Thesis (MPA)--Stellenbosch University, 2013. / ENGLISH ABSTRACT: The thesis reports on an evaluative study of the sustainability of housing development by the City of Cape Town with the Witsand, Atlantis, housing project as case study to empirically measure such sustainability. The study was attempted to determine how the City of Cape Town has planned for and implemented sustainability measures and what the results were in the Witsand project. The research therefore determined to what extent the expressed policy intent of sustainability housing delivery was implemented successfully in Witsand in terms of output and outcomes. The objectives of this study included outlining a theoretical and analytical framework for sustainable development as prescribed in the National, Provincial and Local Government policies and relevant legislation. An evaluative case study is provided, describing how the City of Cape Town implemented its policy in practice. This housing project was chosen because it is claimed to be the first large-scale integrated sustainable housing project in South Africa. The research methodology entailed an analysis of relevant literature, policies, legislation and project design documentation. In addition, the field work utilised a semi-structured mixed questionnaire for conducting interviews with the Project Manager, community development worker and a sample of residents. The research found that the City of Cape has followed the sustainability blueprint as far as their means allowed. The satisfaction level of the community is high. It was found, however, that the people, even though they received houses that were designed and constructed to take full advantage of the environment without harming it; lack the knowledge to maintain sustainable, energy conserving living. This indicates that sustainability in low income housing is not only a matter of design and technology, but also of instilling a particular behaviour amongst beneficiaries. / AFRIKAANSE OPSOMMING: Hierdie tesis voer ‘n evaluering studie van die volhoubaarheid van behuising deur die Stad Kaapstad by die Witsand, Atlantis projek, wat as ‘n gevallestudie om sodanige volhoubaarheid empiries te meet, gedien het. Die studie is onderneem om te bepaal hoe die Stad Kaapstad volhoubaarheidsmaatreëls beplan en geïmplementeer het, en wat die resultate van die Witsand projek was. Die navorsing het dus bepaal tot watter mate die uitdruklike beleidsvoornemens vir die lewering van volhoubare huisverskaffing in terme van uitset en uitkomste suksesvol in Witsand geïmplementeer is. Die doelstellings van hierdie studie het die skets van ‘n teoretiese en analitiese raamwerk vir volhoubare ontwikkeling, soos in Nasionale, Provinsiale en Plaaslike beleid en toepaslike wetgewing voorgeskryf, ingesluit. ‘n Evaluerende gevallestudie wat beskrywe hoe die Stad Kaapstad se beleid prakties uitgevoer is, word voorsien. Hierdie projek is gekies vanweë die aanspraak dat dit die eerste grootskaalse geïntegreerde volhoubare projek vir huisverskaffing in Suid-Afrika was. Die navorsingsmetodologie het ‘n ontleding van toepaslike literatuur, beleid, wetgewing en gedokumenteerde projekontwerp behels. Daarbenewens het die veldwerk gebruik gemaak van ’n gemengde semi-gestruktureerde vraelys vir onderhoude met die Projekbestuurder, gemeenskapsontwikkeling werker en ‘n steekproef van die inwoners. Die navorsing het bevind dat die Stad Kaapstad die bloudruk vir volhoubaarheid sover as die stad se middele kon toelaat, gevolg het. Die bevredigingsvlak van die gemeenskap is hoog. Daar is egter gevind dat die mense, ten spyte daarvan dat hulle van huise voorsien is wat ontwerp en gebou is om sonder enige skade aan die omgewing ten volle daaruit voordeel te trek, kennis ontbreek om op volhoubare wyse en met besparing van energie te lewe. Dit dui daarop dat volhoubaarheid in lae-inkomste behuising nie maar net ‘n kwessie van ontwerp en tegnologie is nie, maar ook vereis dat ‘n bepaalde soort gedrag onder die begunstigdes gevestig moet word.