An assessment of different methods for measuring mammal diversity in two Southern African arid ecosystems.
- Authors: Burt, Chloe
- Date: 2021-04
- Subjects: Gqeberha (South Africa) , Eastern Cape (South Africa) , Biodiversity -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/52338 , vital:43591
- Description: A current critical environmental problem is the loss of biodiversity. To allow for adaptive management and effective conservation interventions, reliable data needs to be readily available and effectively collected. To gather reliable data, the most appropriate method must be used. The aim of this thesis was to compare the effectiveness and efficiency of different mammal diversity sampling techniques, including discussing specificities and complementarity of each. I also assessed the limitation of methods in terms of the influence of species traits on detectability. I used standard mammal field methods such as block transects, camera traps, track plates, spotlight surveys, mist nets, acoustic surveys, and live traps for a wide range of mammal taxa, and also included the use of local knowledge in the comparison. I assessed the cost-efficiency of each method by determining the cost per species. The efficiency of each method was assessed by observing when the species accumulation curve reached an asymptote. The effectiveness was determined by the species richness and the taxonomic groups the method detected. My results indicated that block transects were the most efficient and effective method to assess species richness. However, a combination of methods allowed for a more comprehensive survey and my results indicate that block transects and live traps were the best combination. It is important to note, not only the effectiveness and efficiency of methods be assessed, but also their limitations. I therefore also assessed the influence of species traits on the detectability of five methods. The species traits that I tested were body size, diet, activity, and if they lived in groups. On both study areas, body size was the main trait that influenced detectability with most field methods. Diet and activity had varying influence on detectability depending on the method. Group living did not significantly influence detectability. Based on my results, I provide guidelines for choosing the most appropriate survey method for targeted studies on mammals in arid ecosystems as well as guidelines for choosing the most appropriate methods for a terrestrial mammal inventory. Survey methods selection and guidelines provided here can allow for effective monitoring and therefore effective and adaptive management and having reliable and repeatable outcomes from surveys. , Thesis (MSc) -- Faculty of Science, School of Natural Resource Management, 2021
- Full Text: false
- Date Issued: 2021-04
- Authors: Burt, Chloe
- Date: 2021-04
- Subjects: Gqeberha (South Africa) , Eastern Cape (South Africa) , Biodiversity -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/52338 , vital:43591
- Description: A current critical environmental problem is the loss of biodiversity. To allow for adaptive management and effective conservation interventions, reliable data needs to be readily available and effectively collected. To gather reliable data, the most appropriate method must be used. The aim of this thesis was to compare the effectiveness and efficiency of different mammal diversity sampling techniques, including discussing specificities and complementarity of each. I also assessed the limitation of methods in terms of the influence of species traits on detectability. I used standard mammal field methods such as block transects, camera traps, track plates, spotlight surveys, mist nets, acoustic surveys, and live traps for a wide range of mammal taxa, and also included the use of local knowledge in the comparison. I assessed the cost-efficiency of each method by determining the cost per species. The efficiency of each method was assessed by observing when the species accumulation curve reached an asymptote. The effectiveness was determined by the species richness and the taxonomic groups the method detected. My results indicated that block transects were the most efficient and effective method to assess species richness. However, a combination of methods allowed for a more comprehensive survey and my results indicate that block transects and live traps were the best combination. It is important to note, not only the effectiveness and efficiency of methods be assessed, but also their limitations. I therefore also assessed the influence of species traits on the detectability of five methods. The species traits that I tested were body size, diet, activity, and if they lived in groups. On both study areas, body size was the main trait that influenced detectability with most field methods. Diet and activity had varying influence on detectability depending on the method. Group living did not significantly influence detectability. Based on my results, I provide guidelines for choosing the most appropriate survey method for targeted studies on mammals in arid ecosystems as well as guidelines for choosing the most appropriate methods for a terrestrial mammal inventory. Survey methods selection and guidelines provided here can allow for effective monitoring and therefore effective and adaptive management and having reliable and repeatable outcomes from surveys. , Thesis (MSc) -- Faculty of Science, School of Natural Resource Management, 2021
- Full Text: false
- Date Issued: 2021-04
Cultural perspectives on health decision making of HIV positive Xhosa males
- Tebekana, Aviwe Zuziwe Nomalibongwe
- Authors: Tebekana, Aviwe Zuziwe Nomalibongwe
- Date: 2020-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/53769 , vital:45835
- Description: In 1998, following a recommendation made by the United Nations Educational, Scientific and Cultural Organisation (UNESO), the Joint United Nations programme on HIV and AIDS (UNAIDS) adopted a cultural approach to HIV and AIDS prevention and treatment for sustainable development. Cultural identity, values and norms are all influential factors in health decision making and may be especially important in the context of HIV infection. The research aim of this study was to explore and describe the experiences of HIV positive Xhosa males in relation to understanding how cultural identity, cultural values and norms influence the health decision making behaviour of Xhosa males. A qualitative study design was adopted. A descriptive and interpretative approach was applied. Semi-structured interviews were conducted with 10 HIV positive Xhosa males aged 25 to 49 years in four primary healthcare clinics in the Nelson Mandela Bay. Thematic data analysis was utilised to analyse the data through the lens of literature and the bio-ecological model. The data was coded by the researcher and an independent coder. Three themes and six sub themes emerged from the study. Theme one is: significance of culture for HIV positive Xhosa males. Theme two is: perspectives on factors that have an influence on health decision making. Theme three is: perceived beliefs and perceptions about HIV and AIDS in the Xhosa ethnic group. The study indicated that cultural factors such as ancestral beliefs regarding illness, traditional circumcision, initiation school and masculine roles and expectations influenced health decision making of the Xhosa males. In addition, there are other factors that have an influence on health decision making such as psycho-social factors of peer pressure and biological factors which include physical developmental changes. In addition to factors that have an influence to health decision making, it became apparent in the study that there was perceived stigma attached to HIV and AIDS from family members and the Xhosa community. Participants also experienced internalised stigma and expressed a v fear of not having an heir; thus, influencing risk taking health decision in fear of being stigmatised. Perceptions of HIV positive Xhosa males on cultural factors that have an influence on health decision making such as risk behaviour and adherence to treatment are: ancestral belief of protection against illness, traditional circumcision, initiation school and masculine roles and expectations. , Thesis (MA) -- Faculty of Health Sciences, School of Behavioural Sciences, 2020
- Full Text:
- Date Issued: 2020-12
- Authors: Tebekana, Aviwe Zuziwe Nomalibongwe
- Date: 2020-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/53769 , vital:45835
- Description: In 1998, following a recommendation made by the United Nations Educational, Scientific and Cultural Organisation (UNESO), the Joint United Nations programme on HIV and AIDS (UNAIDS) adopted a cultural approach to HIV and AIDS prevention and treatment for sustainable development. Cultural identity, values and norms are all influential factors in health decision making and may be especially important in the context of HIV infection. The research aim of this study was to explore and describe the experiences of HIV positive Xhosa males in relation to understanding how cultural identity, cultural values and norms influence the health decision making behaviour of Xhosa males. A qualitative study design was adopted. A descriptive and interpretative approach was applied. Semi-structured interviews were conducted with 10 HIV positive Xhosa males aged 25 to 49 years in four primary healthcare clinics in the Nelson Mandela Bay. Thematic data analysis was utilised to analyse the data through the lens of literature and the bio-ecological model. The data was coded by the researcher and an independent coder. Three themes and six sub themes emerged from the study. Theme one is: significance of culture for HIV positive Xhosa males. Theme two is: perspectives on factors that have an influence on health decision making. Theme three is: perceived beliefs and perceptions about HIV and AIDS in the Xhosa ethnic group. The study indicated that cultural factors such as ancestral beliefs regarding illness, traditional circumcision, initiation school and masculine roles and expectations influenced health decision making of the Xhosa males. In addition, there are other factors that have an influence on health decision making such as psycho-social factors of peer pressure and biological factors which include physical developmental changes. In addition to factors that have an influence to health decision making, it became apparent in the study that there was perceived stigma attached to HIV and AIDS from family members and the Xhosa community. Participants also experienced internalised stigma and expressed a v fear of not having an heir; thus, influencing risk taking health decision in fear of being stigmatised. Perceptions of HIV positive Xhosa males on cultural factors that have an influence on health decision making such as risk behaviour and adherence to treatment are: ancestral belief of protection against illness, traditional circumcision, initiation school and masculine roles and expectations. , Thesis (MA) -- Faculty of Health Sciences, School of Behavioural Sciences, 2020
- Full Text:
- Date Issued: 2020-12
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