Estuarine species and habitat :distribution and connectivity
- Veldkornet, Dimitri Allastair
- Authors: Veldkornet, Dimitri Allastair
- Date: 2016
- Subjects: Estuarine ecology -- Research -- South Africa Estuarine fishes -- Speciation -- South Africa , Aquatic plants -- South Africa
- Language: English
- Type: Thesis , Doctoral , PHD
- Identifier: http://hdl.handle.net/10948/45388 , vital:38604
- Description: This study explored the distribution of estuarine macrophyte genetic lineages, species and habitats in relation to environmental gradients at various spatial scales. A database was assembled to determine the area and species composition of different estuarine habitats. This can now be used to retrieve information as a baseline for further monitoring and conservation planning. Research has shown that macrophytes occur over a wide range of physiochemical conditions, suggesting that these species have great genetic and phenotypic variation to occupy broad niche ranges. In eight estuaries along the South African coast, sediment and groundwater characteristics were measured in quadrants spanning the salt marsh, ecotone and terrestrial habitats. The results suggested that, in the absence of competition and disturbance at the salt marsh-terrestrial boundary, salt marshes would be unaffected by sea-level rise; and they would migrate landward. However, disturbance at the landward margin of salt marshes has already resulted in changes in species composition and altered environmental conditions. This promotes the encroachment of terrestrial alien invasive plants, leading to a loss of connectivity. A holistic assessment of land-cover changes showed that only 28% of South African estuaries still remain in a natural state. The delineation of all estuaries needs to be consistent and inclusive of all estuarine physical and biological processes, to curb future changes. The research results have been used in national assessments of estuarine health; and they have made a significant contribution to estuary-management plans. In addition, three scientific articles have been published from the thesis; and two more are currently under review.
- Full Text:
- Date Issued: 2016
- Authors: Veldkornet, Dimitri Allastair
- Date: 2016
- Subjects: Estuarine ecology -- Research -- South Africa Estuarine fishes -- Speciation -- South Africa , Aquatic plants -- South Africa
- Language: English
- Type: Thesis , Doctoral , PHD
- Identifier: http://hdl.handle.net/10948/45388 , vital:38604
- Description: This study explored the distribution of estuarine macrophyte genetic lineages, species and habitats in relation to environmental gradients at various spatial scales. A database was assembled to determine the area and species composition of different estuarine habitats. This can now be used to retrieve information as a baseline for further monitoring and conservation planning. Research has shown that macrophytes occur over a wide range of physiochemical conditions, suggesting that these species have great genetic and phenotypic variation to occupy broad niche ranges. In eight estuaries along the South African coast, sediment and groundwater characteristics were measured in quadrants spanning the salt marsh, ecotone and terrestrial habitats. The results suggested that, in the absence of competition and disturbance at the salt marsh-terrestrial boundary, salt marshes would be unaffected by sea-level rise; and they would migrate landward. However, disturbance at the landward margin of salt marshes has already resulted in changes in species composition and altered environmental conditions. This promotes the encroachment of terrestrial alien invasive plants, leading to a loss of connectivity. A holistic assessment of land-cover changes showed that only 28% of South African estuaries still remain in a natural state. The delineation of all estuaries needs to be consistent and inclusive of all estuarine physical and biological processes, to curb future changes. The research results have been used in national assessments of estuarine health; and they have made a significant contribution to estuary-management plans. In addition, three scientific articles have been published from the thesis; and two more are currently under review.
- Full Text:
- Date Issued: 2016
Organisational reputation management in South African Higher Education by means of social media policies
- Authors: Van den Berg, Amanda Elise
- Date: 2016
- Subjects: Online social networks -- Law and legislation -- South Africa Corporate image -- Management , Education, Higher -- South Africa
- Language: English
- Type: Thesis , Doctoral , PHD
- Identifier: http://hdl.handle.net/10948/45525 , vital:38640
- Description: This study investigates reputation management in South African higher education institutions by means of the development and implementation of social-media policies. While other policies, such as marketing, computing, intellectual property, ethics and staff, and student disciplinary policies may exist, higher education institutions need to respond to both the new challenges and the new risks posed by the social-media practices and to develop explicit social-media policies for staff and students that are unique to that industry. Existing social-media policies of SA HEIs, as well as those developed within the finance sector and by international institutions of higher education, are analysed by means of in-depth interviews and documentary analysis, by using the same coding structure. Telephonic interviews with key personnel provide insight into the social-media policy development process of SA HEIs. In order to ensure research trustworthiness and rigour, the analytical process employed Consensual Qualitative Research. The research reveals that it has become necessary for organisations to understand the important role played by the social media in corporate strategies, in order to obtain optimal results for sustained growth and development. Organisational reputation, including the social media, need to be managed, not only as an isolated function or activity of the organisation, but as an integral element of all parts or subsystems of the organisation. Social-media policy development is only the starting point of ensuring a positive return for the organisation. The organisation needs to be seen to actively engage in the benefits and risks – by understanding the role of the social media within the various sectors of the organisation. A more strategic corporate strategy is proposed to meet the full potential and to manage organisational risk. universities need to develop an attractive and well-maintained reputation – with the aim of attracting the most accomplished researchers, staff, students and funders. In addition, the research reveals that HEIs can be seen as high-risk operations by their external stakeholders, including clients (students), funders and communities. It is argued that their outputs (research and students) fundamentally impact on their communities and on the interconnected environment. Organisational stakeholders are seen as important role players within an organisation’s and policy on how to manage these relationships; and the potential and real-time risks associated with such relationships become central themes, when managing the organisational reputation.
- Full Text:
- Date Issued: 2016
- Authors: Van den Berg, Amanda Elise
- Date: 2016
- Subjects: Online social networks -- Law and legislation -- South Africa Corporate image -- Management , Education, Higher -- South Africa
- Language: English
- Type: Thesis , Doctoral , PHD
- Identifier: http://hdl.handle.net/10948/45525 , vital:38640
- Description: This study investigates reputation management in South African higher education institutions by means of the development and implementation of social-media policies. While other policies, such as marketing, computing, intellectual property, ethics and staff, and student disciplinary policies may exist, higher education institutions need to respond to both the new challenges and the new risks posed by the social-media practices and to develop explicit social-media policies for staff and students that are unique to that industry. Existing social-media policies of SA HEIs, as well as those developed within the finance sector and by international institutions of higher education, are analysed by means of in-depth interviews and documentary analysis, by using the same coding structure. Telephonic interviews with key personnel provide insight into the social-media policy development process of SA HEIs. In order to ensure research trustworthiness and rigour, the analytical process employed Consensual Qualitative Research. The research reveals that it has become necessary for organisations to understand the important role played by the social media in corporate strategies, in order to obtain optimal results for sustained growth and development. Organisational reputation, including the social media, need to be managed, not only as an isolated function or activity of the organisation, but as an integral element of all parts or subsystems of the organisation. Social-media policy development is only the starting point of ensuring a positive return for the organisation. The organisation needs to be seen to actively engage in the benefits and risks – by understanding the role of the social media within the various sectors of the organisation. A more strategic corporate strategy is proposed to meet the full potential and to manage organisational risk. universities need to develop an attractive and well-maintained reputation – with the aim of attracting the most accomplished researchers, staff, students and funders. In addition, the research reveals that HEIs can be seen as high-risk operations by their external stakeholders, including clients (students), funders and communities. It is argued that their outputs (research and students) fundamentally impact on their communities and on the interconnected environment. Organisational stakeholders are seen as important role players within an organisation’s and policy on how to manage these relationships; and the potential and real-time risks associated with such relationships become central themes, when managing the organisational reputation.
- Full Text:
- Date Issued: 2016
The survival of micro -enteprises in Kampala, Uganda :a substainable livelihoods approach
- Authors: Twinorugyendo,Penninah
- Date: 2016
- Subjects: Microfinance -- Uganda -- Kampala New Business Enterprises -- Uganda -- Kampala -- Finance , Small business -- Uganda -- Kampala
- Language: English
- Type: Thesis , Doctoral , PHD
- Identifier: http://hdl.handle.net/10948/45333 , vital:38571
- Description: This purpose of this thesis was to explain the resilience of certain micro-enterprises (MEs) in Kampala, Uganda – by focusing on their vulnerability, the assets that they brought to bear on the situation, the role of non-governmental organizations and government institutions in supporting MEs, and the strategies used by ME owners, themselves. As such, it adopts the Sustainable-Livelihoods approach – an approach that has not been used in Kampala before. Thus, it makes a valuable contribution to the field. Designed as a qualitative study, it used in-depth interviews and focus-group discussions. The major findings on vulnerability were linked to: the rising cost of materials; unfair licensing; the struggle to win tenders; local and foreign competition; and the disruption of utilities. The assets used to sustain the welfare of the MEs included: making use of a range of skill-acquisition strategies; leveraging networks; and pooling resources. Financial assets used by MEs revolved around informal savings and credit schemes; but the support given to the MEs through government agencies and NGOs was difficult to assess. Several important strategies were used by ME owners. One of these involved linking with formal construction companies. In addition, temporary workshops constructed out of wood-and-iron, were common. This increased mobility and allowed the re-use of materials. Furthermore, MEs manufactured their own tools, developed new marketing techniques, and diversified their income-generating activities. The significance of this study is two-pronged. It demonstrates that the resilience of MEs does depend on their own positive qualities, but also on an increasingly business-friendly national and international economic environment.
- Full Text:
- Date Issued: 2016
- Authors: Twinorugyendo,Penninah
- Date: 2016
- Subjects: Microfinance -- Uganda -- Kampala New Business Enterprises -- Uganda -- Kampala -- Finance , Small business -- Uganda -- Kampala
- Language: English
- Type: Thesis , Doctoral , PHD
- Identifier: http://hdl.handle.net/10948/45333 , vital:38571
- Description: This purpose of this thesis was to explain the resilience of certain micro-enterprises (MEs) in Kampala, Uganda – by focusing on their vulnerability, the assets that they brought to bear on the situation, the role of non-governmental organizations and government institutions in supporting MEs, and the strategies used by ME owners, themselves. As such, it adopts the Sustainable-Livelihoods approach – an approach that has not been used in Kampala before. Thus, it makes a valuable contribution to the field. Designed as a qualitative study, it used in-depth interviews and focus-group discussions. The major findings on vulnerability were linked to: the rising cost of materials; unfair licensing; the struggle to win tenders; local and foreign competition; and the disruption of utilities. The assets used to sustain the welfare of the MEs included: making use of a range of skill-acquisition strategies; leveraging networks; and pooling resources. Financial assets used by MEs revolved around informal savings and credit schemes; but the support given to the MEs through government agencies and NGOs was difficult to assess. Several important strategies were used by ME owners. One of these involved linking with formal construction companies. In addition, temporary workshops constructed out of wood-and-iron, were common. This increased mobility and allowed the re-use of materials. Furthermore, MEs manufactured their own tools, developed new marketing techniques, and diversified their income-generating activities. The significance of this study is two-pronged. It demonstrates that the resilience of MEs does depend on their own positive qualities, but also on an increasingly business-friendly national and international economic environment.
- Full Text:
- Date Issued: 2016
- «
- ‹
- 1
- ›
- »