A dissertation submitted to the Faculty of Science, School of Geography, Archaeology and Environmental Sciences, University of the Witwatersrand, Johannesburg, in fulfilment of requirements for the degree of Master of Science. 14 April 2016. / South Africa has seen a significant loss and degradation of its urban wetlands, all in the name of development. The natural and strategic location of Wetlands, subject these natural systems to a host of extraction processes, leading to the ultimate destruction and demise of these Wetlands. The biggest threats to wetlands are people and their innate exploitative and destructive nature. Anthropogenic activities that lead to degradation and total loss of wetlands in South Africa are: drainage, mining activities, clearing of large tracts of land for infrastructural and agricultural practices and over- harvesting of wetland resources. The drastic alteration of a wetland system has severe and far reaching environmental, economic and social consequences. The value of a single wetland system is so unique and is yet, not stressed enough in legislation governing the protection and conservation of natural ecosystems. A typical example of an undervalued wetland is the case of the Kwa-Thema Ext 3 Wetland, which has been subjected to partial degradation as a result anthropogenic activities. The study concluded that activities such as over-grazing, extraction of natural vegetation, clearing large tracts of land for housing development and extensive farming practices (to name a few) have all contributed to the degradation and devaluing of the Kwa-Thema Ext 3 wetland. Interesting aspects of this study revealed that, whilst some individuals were aware of their prolonged and unsustainable use of the wetland’s resources, little room for choice was left but to utilize the wetland, on account of poverty- stricken living conditions. It seems that perhaps, through understanding why people are using the wetland in such extreme ways, methods of wetland rehabilitation and improvement in the socio-economic dynamic of the community can be attained in the near future. As a result of this study, a number of recommendations are made: (i) Integrate wetland value educational programmes into the lives of all South Africans; (ii) Consolidate and realign policy and legislation that specifically focus on wetland protection and conservation; (iii) Improve communication between governmental and respective local authorities; and (iv) Strengthen the national wetland inventory. / GR 2016

This study explores the significance for practitioners of taking their therapeutic work outside of the traditional therapy room, typically into nature spaces, parks or gardens. Attention is paid to the notion of the therapeutic frame and relevant ecopsychology theory. While there is substantial literature around ecotherapy and the benefits of nature to wellbeing, there is relatively little concerning working as a psychotherapist outdoors. The purpose of this research therefore was to address the question of what it is like to take a therapeutic practice out of doors and the potential challenges. Eight semi-structured interviews were conducted with practitioners with experience of working out of doors with clients. Following van Manen’s (1990) hermeneutic phenomenology research methodology, five themes were found: boundaries and new frontiers, fitting in, what ‘they’ think, and who is it for (parts I and II). The research aim, to grasp the meaning of this unconventional practice from the practitioners’ perspective, was mirrored in the analysis which revealed that meaning for the participants is complex and concerns for the client as well as personal concerns were seen as fundamental to the experience. Relationships to and the presence of nature in the work were also recognised as significant and identified a tension around the unquantifiable experience of the ‘soulfulness’ of nature in the work versus the measurable elements of nature that have therapeutic benefit. The scarcity of practitioners working outdoors was attributed to a lack of indoor therapists’ understanding of the processes involved which was seen to impact upon participants’ experiences in their work outdoors. The emergent themes in this research emphasise for counselling psychology an on-going need to review therapeutic dogma, encompass the wider world in the context of therapeutic practice and expand current notions of mental health and psychopathology to engender greater pluralism in theory and practice.

A dissertation submitted to the Faculty of Science, School of Animal, Plant and Environmental Sciences, University of the Witwatersrand, Johannesburg, in fulfilment of requirements for the degree of Master of Science. 30 October 2014. / My study investigated the significance of spatiotemporal heterogeneity on the Nile crocodile (Crocodylus niloticus), a long-lived, apex predator, occupying many African and some South African riverine ecosystems. The scales of study included a long-term investigation of the (indirect) impacts of anthropogenic, landscape scale (100 km2) disturbances on the population demographics of C. niloticus, over 35 years. At the intermediate scale (15 km2), indirect and direct impacts of flooding and seasonality on the health of the C. niloticus population were investigated over a three-year period. This was performed by investigating preferred habitat availability and river quality assessments, including physiochemical variables and rapid bioassessment measures, which served as the ‘smallest’ scale (with samples taken every 500 m). All scales were compared with long-term and short-term investigations into crocodile population demographics. Total crocodile population size within the study river increased over time (from 18 in 1981 to 35 in 2013), but the number of adults decreased (from 9 to 3). Human population size increased at a rate of 3300 individuals per year and anthropogenically altered habitat increased over time from 24% total coverage attributable to farmland on the banks of the Mutale River in 1977, to 66% land coverage in 2013. Increases in humaninduced habitat alterations also created shifts in preferred crocodilian habitat availability. Investigations into the effects of natural disturbances revealed that physiochemistry was seasonally variable, and changed drastically with changes in climate and runoff. The macroinvertebrate communities in the Mutale River differed in time and space for a multitude of reasons, including climate change and changes in habitat. The results of my study showed that Nile crocodiles were affected by alterations to the environment on multiple scales. The study concludes that the long-term population viability of C. niloticus is limited by a combination of these factors.

Thesis. 1975. M.Arch.--Massachusetts Institute of Technology. Dept. of Architecture. / Bibliography: leaves 86-88. / M.Arch.

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, 2014. / This thesis describes research that was conducted to investigate the causes of problems associated with the conservation of biodiversity in the Rwenzori Mountains National Park. The Rwenzori Mountains National Park faces conservation problems such as illegal harvesting of park resources, encroachment on the park boundary, and poor relationships between the local people and the managers of the park. These problems triggered this study because despite attempts such as intensifying park rules and regulations, implementing community-based conservation initiatives, and providing environmental education to local people to address the problems, they have persisted. This study was conducted on the premise that before a solution to these problems can be found, their nature and extent, and possible cause, need to be understood. The study involved: a) an extensive review of the relevant literature to identify factors that affect successful conservation of biodiversity in national parks in Africa, b) a critical analysis of the role of traditional ecological knowledge in the conservation of biodiversity in national parks in Africa, c) the development of a theoretical framework that could guide an investigation into problems associated with the conservation of biodiversity in national parks using the case study of the Rwenzori Mountains National Park, d) field investigations on how local people in the Rwenzori Mountains depended on the park, and what factors influence their dependence on the park, e) investigations into the environmental education provided to influence people to support conservation of the Rwenzori Mountains National park, f) the development of a generalisable scheme of factors that influence local people to illegally access and use the Rwenzori Mountains National Park, and g) preparation of a model that could serve as a framework for developing holistic community-based biodiversity conservation plans in a rural African context. The review of the literature was done through meta-data analysis of publications systematically selected from various web search engines on the internet. This was followed by field investigations. In order to have an in-depth and holistic understanding of the issues investigated, a mixed-methods approach to data collection was used. Semi-structured individual interviews were conducted with 163 randomly selected respondents from households in villages within 5 km of the Rwenzori Mountains National Park boundary. The study also involved content analysis of the formal environmental education syllabus documents, and documents on the Rwenzori Region Environmental Education Strategy and its implementation. It was found that factors responsible for both the success and failure of conserving biodiversity in national parks were socio-cultural and economic in nature. Although there was an increasing number of studies in the literature advocating for the consideration of traditional ecological knowledge in the conservation and management of national parks in Africa, most of those studies are theoretical, based on logical accounts and contestable historical reviews. In the Rwenzori Mountains, the local community illegally accessed the park to harvest 87 plant species, hunt 46 species of animals, and to conduct various activities. Illegal access to the park was influenced by a range of factors which interacted in myriad ways. Some of the factors (such as traditional beliefs) were situated inside mindsets of individuals and others (such as unpredicted weather conditions, lack of alternative means of livelihood and survival, commercial benefits, and bureaucratic procedures for legally accessing resources) were external to the individual. Previous attempts by the park staff to address illegal access to the park, and the associated resource harvesting problems, were judged to have been unsuccessful because the interventions did not target the underlying factors. This thesis argues for the use of holistic frameworks in investigating and addressing problems associated with the conservation of biodiversity in the Rwenzori Mountains National Park and has demonstrated how such frameworks could be developed. An adaptable model which could enhance more effective community-based biodiversity conservation has been proposed and recommended for future interventions in the management of national parks in a rural African context.

First Progress Report, Period Covered June 14, 1971-November 15, 1971, for the "Lake Powell Project", Collaborative Research on Assessment of Man's Activities on the Lake Powell Region, to National Science Foundation, Research Applied to National Needs (RANN), Division of Environment Systems & Resources.

No description available.

Problems associated with planning the future use of estuarine areas stem from: A lack of knowledge on the critical aspects of the system. Inability to predict the future changes which will occur within the system in order to effectively manage the resource base. These difficulties lie in the fact that changes within the system occur because of both "natural" and "cultural" conditions. The thesis hypothesis and subsequent research is to describe the physical changes that have occurred within the Netarts system, primarily due to man's impact. Types of data gathered for the analysis includes that on historical and current land use activities, current research findings on system characteristics, and independent research on shoreline changes and vegetation composition. Much of the historical data were taken from early manuscripts and publications. Current research data were obtained from several engineering studies of the bay, as well as a baseline study of Netarts funded by a grant from the National Science Foundation and Oregon State University. This study included an inventory of man's utilization of the resource base. Methods utilized in data analysis included aerial photo-interpretation, planimetric measurement of shoreline and vegetative alterations, and on-site inventory of current shoreline and vegetation changes. Results of the research have shown that it is possible to measure and describe changes within the Netarts Bay system. Specific findings include: A decrease in sandspit volume of nine percent between 1942 and 1974 due to construction of a boat basin and fill. Occurrence of marsh progradation in all marsh areas with sedge and low sand type showing the greatest increases between 1939-1962. A decrease in rate of marsh progradation from 1962-1974. A total decrease in tidal prism of the bay between 1957-1969 as measured by cross sectional areas. The rate of decrease is occurring at a faster rate south of the mouth of Whiskey Creek. Destruction of Chum salmon fisheries and native oyster populations due to over-harvesting and siltation. Destruction of Gaper clam beds along the eastern shore of the bay and increased erosion of the shore, due to road fill and road construction. The results of the research and subsequent findings show that it is possible to describe an estuary as a "system" that has applicability for future development of a land and water use model for an estuary.

This study elucidates the underlying relationships for the distribution of oak landcover on bedrock and soil orders in two counties in Texas and one in Oklahoma. ESRI's ArcGis and ArcMap was used to create surface maps for Denton and Coke Counties, Texas and Choctaw County, Oklahoma. Attribute tables generated in GIS were exported into a spreadsheet software program and frequency tables were created for every formation and soil order in the tri-county research area. The results were both a visual and numeric distribution of oaks in the transition area between the eastern hardwood forests and the Great Plains. Oak distributions are changing on this transition area of the South Central Plains. The sandy Woodbine and Antlers formations traditionally associated with the largest oak distribution are carrying oak coverage of approximately 31-32% in Choctaw and Denton Counties. The calcareous Blackland and Grand Prairies are traditionally associated with treeless grasslands, but are now carrying oak and other tree landcover up to 18.9%. Human intervention, including the establishment of artificial, political and social boundaries, urbanization, farming and fire control have altered the natural distribution of oaks and other landcover of this unique georegion.

D.Litt.et Phil. (Sociology) / Please refer to full text to view abstract