4. Electronic Theses and Dissertations (ETDs) - Faculties submissions
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Item When Less Is More – Tiny Housing As “Adequate” Housing(University of the Witwatersrand, Johannesburg, 2023) Kruger, Petronell; Pieterse, MariusThe modern housing landscape is in flux with three key phenomena impacting the “adequacy”– the legal standard by which housing provision is measured – of housing policy, in South Africa, and worldwide. First, the “classic” housing crisis persists: high levels of homelessness, housing backlogs, and challenges related to government housing subsidies and service delivery continue. Second, there is international recognition of the impact of climate change on housing, the consequent need for climate-resilient housing, and reduced climate footprints of housing construction, maintenance and ownership. Third, physical housing size is increasing, despite the number of household members and available space for housing decreasing. This thesis considers these phenomena and contemplates the role of housing size within the evolving legal standard of “adequacy”, especially where size was often linked to the promotion of the right to health in light of communicable disease outbreaks. The thesis explores how tiny housing movements and different global norms on housing size can challenge conventional standards of housing adequacy. It considers that smaller dwellings are more affordable, less resource-intensive and, within the correct policy context, can lead to easier access to housing. The study lens of tiny housing is chosen due to its popularity throughout different income groups, based on growing concerns about consumerism, sustainability and communitarianism (albeit through a westernised lens). Accordingly, it allows for a discussion on the role of housing down-sizing without necessarily invoking a sense of “racing to the bottom”. To achieve the research aim, the following research questions are posed and answered in turn: What is “adequate” as a standard to measure housing? Does size matter for the standard of adequacy, and if so, how? Can tiny houses, as a representation of very small housing types, be deemed adequate? If tiny housing can meet the adequacy standard, how should the law facilitate the self-realisation of tiny housing, or, alternatively, as a viable form of public housing? The thesis comprises six chapters. The first chapter introduces the above-mentioned phenomena and study lens. The second chapter examines the legal and social barriers and facilitators for tiny housing in both private and public contexts through a comparative study of selected jurisdictions, chosen to represent different social, cultural and geographic contexts in which housing size requirements developed. The jurisdictions were also selected based on data accessibility and availability. The third chapter is a content analysis of theoretical aspects of adequacy in international and South African housing and human rights law. The fourth chapter is a critical analysis of building regulations and planning laws in South Africa, tracing their history and assessing their current form, with a focus on how they structure the self-realisation of access to tiny housing as adequate housing. The fifth chapter considers government public housing programs, policy approaches to housing size and its trade-offs with other adequacy factors in enabling access to tiny housing for people without the means to self-realise the right to adequate housing. Chapter six presents the answers to the research questions as explored through the various chapters and presents the overall findings of the studyItem Palynological insights into an 11,700-year sequence of vegetation change in mashishing, Mpumalanga, northeastern South Africa(University of the Witwatersrand, Johannesburg, 2023) Olatoyan, Jerry O.; Schoeman, Alex; Neumann, Frank; Sievers, Christine; Orijemie, Emuobosa; Evans, MaryIn this thesis, the issue of distinguishing anthropogenic and climatic drivers of vegetation change was explored through the analysis of pollen, phytoliths and microcharcoal in core sediment records from Mashishing Fen in the Thaba Chweu Municipality, Mpumalanga province, northeastern South Africa, that date from ca. 11.2 – 11.7 ka BP to the present. In southern Africa, generally, the distinction between the contributions of anthropogenic and climatic factors to vegetation changes poses a complex challenge in palaeoenvironmental research. This difficulty often arises due to limited, well-dated palaeoenvironmental sequences suitable for correlations between archaeological and palaeoecological records. For the last 2000 years, there has been a scarcity of direct evidence for farming, such as grains and other domesticated plants, and pastoralism. A further difficulty is that some plant taxa may be indicators for intense droughts but also signify anthropogenic disturbances. At the centre of the thesis are three papers. The first comprises a synthesis of existing literature of archaeobotanical evidence that was done to evaluate the relationship between climate, anthropogenic activities, and vegetation change during the first millennium CE in southern Africa. I focussed on this context in the paper because it is a time in which the arrival of pastoralism and farming in the region makes it the most likely period during which distinct anthropogenic vegetation change occurred. The published data demonstrates that microfossil assemblages are potential indicators of anthropogenic activities of pre-European pastoralists and farmers of the region, with patterns including a decline in tree pollen and increases in microcharcoal, spores of coprophilous fungi, open land/disturbance indicators, and ruderal species. The second paper addresses some of the limitations of palynology as a method. A modern pollen- and phytolith-vegetation study was conducted on surface sediment samples linked to the botanical survey of five vegetation survey plots at and around Mashishing Fen to investigate the relationships between the modern pollen and phytoliths in the surface samples and the contemporary vegetation within the area. The results support the accepted view that pollen and phytoliths often do not track similar vegetation signals. The modern pollen assemblages clearly track forest and wetland vegetation, and the modern phytolith assemblages reflect grassland vegetation in the area. The study confirmed that differential phytolith and pollen production, dispersal and preservation substantially influence the proxy records and that combining phytolith and pollen data provides a more accurate basis for plant fossil interpretations in palaeoenvironmental studies. The results of this paper constrained my interpretation of the pollen data used in the third paper. Finally, pollen, spores and microcharcoal data from the core sediment records from Mashishing Fen (formerly the Lydenburg Fen) provide palaeoenvironmental records for approximately the last 11,2 to 11,7 ka years–most of the Holocene. The data is interpreted through the patterns identified in the first paper, including potential indicators of anthropogenic activities. The data of the earlier period provide a backdrop to possible anthropogenic change in the first millennium CE; the extended data illustrate paleoenvironmental changes that took place in a region occupied by hunter-gatherers but predate any possible anthropogenic influences by pastoralists or farmers. The core data suggests that the early Holocene began with moist and warm conditions that were followed by fluctuations between wet and dry conditions during the mid-Holocene and the decline of trees with the dominance of open-land indicators during the later Holocene, thereby providing the basis for correlating the palaeoecological records with the archaeological records in the regionItem Exploring Spatio-Temporal Climate Dynamics over Central Southern Africa: A Cross Border Analysis(University of the Witwatersrand, Johannesburg, 2023-07) Welff, Megan; Fitchett, Jennifer; Esterhuysen, AmandaUnderstanding the diverse nature of climate dynamics in southern Africa is imperative in the face of climate change. Ground-based meteorological stations provide high-resolution climate data that can be used to investigate and analyse climate in detail. However, southern African countries monitor and manage meteorological stations independently which presents various challenges when attempting cross-border studies. While there are many meteorological-station-based climate studies conducted for South Africa or Botswana, there are few that combine meteorological datasets from both these countries to investigate climate dynamics across political boundaries. In this study, meteorological data from Botswana Meteorological Services and the South African Weather Service spanning 1912-2019 is pre-processed, cleaned and combined to produce a cross-border dataset. A total of 44 stations covers the Gauteng and North West provinces in South Africa and the southern, Kweneng, Kgatleng, South-east and Kgalagadi districts of Botswana. The combined cross-border dataset includes the average monthly summer, winter and annual rainfall (RS, RW and RA respectively) and the average monthly minimum and maximum summer, winter and annual temperatures (TSmin, TSmax, TWmin, TWmax, TAmin and TAmax respectively). From the linear regression analysis, an overall increasing trend for temperature is identified barring two stations (TSmin and TAmin for Mahalapye Met station, and TWmin for Vaalharts). Additionally, for rainfall there is a significant decreasing trend identified. Lastly, the spatial variability of the region is determined using an Inverse Distance Weighted interpolation in the GIS Software, ArcMap, to interpolate between stations. From this a west to east reduction in rainfall and a north-western to south-eastern decreasing temperature gradient is identified across the study region.