The coastal zone is the dynamic interface between land and sea and is under immense threat from increasing coastal population and development trends as well as global climate change. Given global and regional sea level rise projections, coastal African countries including South African are highly exposed to climate risks, namely storm surges, flooding and coastal erosion, which particularly impact socio-ecological systems at the local level. The aim of this study is to examine the various technical responses and governance approaches employed by government to address coastal risk along the Langebaan shoreline – a coastal town located in the Western Cape, renowned for its tourism, recreation and scenic attributes. However, the Langebaan shoreline is increasingly at-risk from climate-related sea level rise, compounded by inappropriate coastal development. This research suggests measures to strengthen coastal risk governance (CRG) through exploring stakeholder interpretation of coastal risk as well as understanding the barriers to addressing coastal risk in the context of the Saldanha Bay Municipality (SBM). This study was informed by a review of the legal framework governing coastal risk in South Africa as well as the various technical reports pertaining to addressing coastal erosion in Langebaan. Primary data collection was undertaken through semi-structured interviews. The findings suggest that coastal erosion along the Langebaan shoreline is a complex and multi-faceted human-environmental issue. Furthermore, various reactive steps have been taken in response to Langebaan's eroding shoreline since the 1997 storm, these included hard and soft engineering measures as well as managed retreat. However, the Saldanha Bay Municipality (SBM) remain crippled by lack of institutional capacity and resources to tackle environmental issues like coastal erosion. Therefore, strengthening coastal risk governance (CRG) in under-resourced municipalities like the Saldanha Bay Municipality (SBM) requires improved communication and coordination across all levels of government and with civil society, which in turn will promote long-term strategic thinking and innovative and collective action.

Contemporary biodiversity conservation is ‘wickedly complex'. This complexity stems from the need to address the diverse objectives of protecting biodiversity and enhancing social wellbeing. However, centralized and exclusionary conservation approaches are often ill-suited to tackling these coupled objectives. Consequently, increasingly calls have been made for the development of more holistic, participatory, nuanced and context-specific conservation governance approaches. Community-based conservation – which seeks to include local communities and their knowledge and priorities in conservation governance – offers a viable though context-specific alternative. However, thus far communitybased conservation initiatives have produced mixed results, largely due to a lack of understanding of how to effectively initiate, implement and manage such ‘wickedly complex' conservation initiatives. South Africa possesses enabling legislation for community-based conservation, but to date there has been no implementation of legally recognized communityconserved areas in the coastal zone. Accordingly, this research is guided by a desire to better understand this ‘policy-praxis disjuncture', and explores what factors, conditions and processes are required to enable South Africa to embrace a more community-orientated approach to conservation. It is proposed that greater understanding and potentially success can be gained by viewing communitybased conservation including, the initiation, implementation and governance of community-conserved areas, as a ‘change process'. Drawing on Commons Theory, Governance Theory, and the Theory of Change approach, a framework was developed to guide the exploration of the factors, conditions and processes that enable the shift to a community-based mode of conservation governance. Case study investigations were conducted in two established regional community coastal conservation cases, and one South African ‘case-in-progress'. Based on the findings of these cases, and the perceptions of South African conservation actors, this dissertation offers insights for tackling South Africa's policy-praxis disjuncture by developing a South African Empirical Community-Based Conservation Theory of Change Pathway. By exploring the initiation, implementation and governance of community-based conservation initiatives as a change process, this dissertation provides a framework for designing a process to facilitate and implement community-based conservation where contextually appropriate. More specifically, it emphasizes the need to develop a context-appropriate, strategic, systematic and iterative set of actions, with clearly articulated assumptions, which strive to address present or potential issues, to support the change to community-based governance. Consequently, this dissertation provides a framework for understanding how a shift to a community-based mode of conservation governance takes place, and offers a South African specific design pathway, with potential application by diverse conservation actors in other countries.

For the past thirty years, food producers and consumers have initiated alternative food networks (AFNs) because of the perception that the globalising agrifood system is unsustainable, untrustworthy, and untransparent. These alternative strategies for food production and distribution are perceived to be rooted in sustainable, socially-embedded principles. In more recent years, solidarity purchase groups (SPGs) have formed as a distinct type of AFN collaboration that facilitates higher levels of relationships of regard and reciprocity between consumers and producers. The literature of AFNs has largely focussed on AFNs in the global North. There has been far less research focussed on the nature of AFNs in the global South. This research project was undertaken to write a history of an SPG in the global South, in Cape Town, South Africa: The Good Food Club (GFC). The development of the GFC was examined within the context of the global literature on AFNs. Key actors in the GFC, suppliers and members, were interviewed to describe their participation and to discuss the motivations driving their involvement in the GFC. The research explored their values around food production and distribution, and the ways their values have developed or changed over the time of their GFC involvement. Through increased exposure to the food system realities, members have grown in their consciousness as consumers. Members and suppliers expressed desire for connection with each other, for increased embodied knowledge. Members do not believe they will find this this knowledge and connection in the country's corporate retailers. Finally, this research comments the GFC developing similarly to AFNs of the global North, and its consequent limitations as a strategy for the common good of Cape Town.

The Botswana High is a prominent mid-tropospheric system that modulates rainfall over subtropical Southern Africa, but the capability of a Global Climate Model (GCM) to reproduce the characteristics and influences of this system on drought remains unknown. Furthermore, the summer variability of the Botswana High has been linked to the El Niño Southern Oscillation (ENSO). However, it remains unknown whether the high's variability is a direct response to ENSO. To that end, this thesis examines the capability of a GCM with quasiuniform resolution (Model Prediction Across Scales, hereafter MPAS) in simulating the characteristics and influences of the Botswana High on drought modes over the subcontinent as well as the influence of ENSO on the high. To simulate the characteristics of the Botswana High and its influence on drought modes, the MPAS model is applied to simulate the global climate at 240km quasi-uniform resolution over the globe for the study period 1980-2010. The model results are validated against gridded observation dataset (Climate Research Unit, CRU), satellite dataset (Global Precipitation Climatology Project, GPCP), and reanalysis datasets (Climate Forecast System Reanalysis, CFSR; the National Oceanic and Atmospheric Administration, NOAA; and ERA-Interim reanalysis 5, ERA5). To investigate the response of the Botswana High to ENSO, this thesis carried out two MPAS model experiments. The first model experiment used observed SSTs everywhere during the study period, while the second experiment used observed SSTs everywhere except over the Pacific Ocean, where monthly climatological SSTs are imposed. The results of this thesis show that MPAS replicates all the essential features in the climatology of climate variables (e.g. temperature, rainfall, 500 hPa geopotential height and vertical motion) over Southern Africa, reproduces the spatial and temporal variation of the Botswana High, and captures the influence of the Botswana High on droughts and deep convections over the subcontinent. In all the datasets (CRU, ERA5, 20C and MPAS), the most dominant five Drought Modes (hereafter DM1-DM5) over Southern Africa jointly explain more than 60% of the interannual variability in the 3-month summer droughts for SPEI and for SPI. ERA5 and MPAS agree that the Botswana High influences the interannual variability of DM1; however, the influence is strong in ERA5 (r = -0.85) and moderate in MPAS (r = -0.42). In addition to that, wet years (+ve SPEI and SPI) are characterized by a weak Botswana High and drought years (-ve SPEI and SPI) by a strong Botswana High. In addition to that, the wet and dry years correspond to the -ve and +ve phases of El Niño Southern Oscillation (ENSO), respectively. Given this, the results of this thesis suggest that the Botswana High might be a conduit pipe through which ENSO signals influence DM1 over the region. Investigation into the impact of ENSO on the Botswana High reveals that the absence of ENSO forcing reduces the amplitude of the Botswana High variability, but the signal of the variability remains. While ENSO enhances the strength of the Botswana High, it does not aid the formation of the High. The result of the thesis has application in the improvement and application of MPAS for drought early warning systems over Southern Africa.