Inflation, credit markets and economic growth: the case of BRICS Countries
- Authors: Barayi, Bavuyile
- Date: 2021-12
- Subjects: Economic development -- BRIC countries , Inflation (Finance) -- BRIC countries
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/53700 , vital:45714
- Description: The empirical study investigates the relationship between inflation, credit markets and economic growth in the context of Brazil, Russia, India, China and South Africa (BRICS) countries. The BRICS group consists of five emerging market economies and was first coined by Jim O’Neil of Goldman Sachs in 2001 whereby initially the bloc consisted of only Brazil, Russia, India, China, South Africa joined the BRICS group in 2010. The BRICS bloc was deemed to be the top fast-growing economies that showed great potential for growth. Consequent to the 2008 global financial crisis, there has been a large change in economic thinking as policy-makers have struggled to overcome the economic misfortunes caused by the crisis. Amongst the emerging countries, the BRICS countries have in effect, established a New Development Bank to play the role of the credit facilitator the BRICS countries and other emerging countries as well. This BRICS New Development Bank was established in 2014 and already has identified and funded some projects within the BRICS countries. Moreover, the main objective of this bank is to provide credit to be utilised for infrastructure, climate change measures, as well as to ensure sustainable development. Against this backdrop, the current study investigates the role played by credit and the extent of development in credit markets on enhancing growth in the BRICS countries, particularly looking at the levels of inflation that are conducive to credit market development. The study notes that in order for credit expansion to be successful, the credit received by a country must reflect positively on a country’s economic growth. In other words, with more credit coming into a country, the expected result is that there will also be a rise in economic growth. Furthermore, seeing that inflation erodes the value of money, this credit or these funds that a country receives may not have the expected influence on growth. Therefore, the study finds it imperative to investigate the levels at which inflation allows for credit expansion to promote growth in a country. Furthermore, central banks play an important role in credit markets via the interest rate channel and the study examines the role of monetary policy in credit markets of each of the BRICS countries by looking at the inflation targeting regime as well as the absence thereof within these countries. Moreover, BRICS central banks share more or less the same goal of maintaining price stability and low inflation through various monetary policy tools. Therefore, achieving this objective will allow a central bank to gain both investor and consumer confidence which plays a role in a country’s investment rates. Moreover, inflation that is not controlled results in uncertainty which makes investors hesitant and unwilling to embark on investments. Ha, Ivanova, Ohnsorge and Unsal (2019) associate a developed financial sector with low inflation, stating that stable inflation rates eliminate uncertainty and avoids the erosion of the value of money. The current study used an Autoregressive Distributed Lag (ARDL) model to examine the linear co-integration and Non-linear Autoregressive Distributed Lag (NARDL) for the non-linear empirical analysis of the relationship between inflation, credit markets and economic growth in BRICS countries. The non-linearity of this relationship is important to study as there has been many debates on the nature of the inflation-growth relationships with some studies implying that it is positive, some say it is a negative relationship and some say it is non-linear. The annual data time series is extracted from the World Bank Indicators and the Penn State database covering the period 1960-2019. The main variables used in the study are Inflation (CPI), Credit (Domestic Credit to Private Sector) and Economic growth (GDP). The study conducted various regressions including the total of five linear regressions which were run individually for each country, the non-linear regressions consisted of three regressions for each country which were on 1) Only Inflation partitioned, (2) Only Credit partitioned and (3) both Inflation and Credit were partitioned. The partitioning of the variables is made possible by the NARDL model which allows variables to be partially decomposed into negative and positive sums to identify thresholds of variables which have various effects on other variables. The overall findings of the study suggest that although inflation exerts various effects on growth, according to this study’s results, it does not have a significant impact on credit for all the countries except for China whereby credit in general is conducive to economic growth and Brazil where growth is enhanced when credit is declining. The study revealed that generally, inflation exerts a negative impact on growth, therefore, authorities must focus on keeping inflation rates low particularly for Russia, India and South Africa as Brazil’s results suggest that rising inflation is conducive to its economic growth in the long run. According to the findings of this study, credit does not have the significant impact on growth even under different inflation thresholds. Furthermore, this does not imply that the credit channel is a futile tool for authorities, the relationship between inflation, credit and growth particularly with the hypothesis that inflation enhances credit market development and therefore growth, is not significant. , Thesis (MCom) -- Faculty of Business and Economic Sciences, School of Economics, Development & Tourism, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Barayi, Bavuyile
- Date: 2021-12
- Subjects: Economic development -- BRIC countries , Inflation (Finance) -- BRIC countries
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/53700 , vital:45714
- Description: The empirical study investigates the relationship between inflation, credit markets and economic growth in the context of Brazil, Russia, India, China and South Africa (BRICS) countries. The BRICS group consists of five emerging market economies and was first coined by Jim O’Neil of Goldman Sachs in 2001 whereby initially the bloc consisted of only Brazil, Russia, India, China, South Africa joined the BRICS group in 2010. The BRICS bloc was deemed to be the top fast-growing economies that showed great potential for growth. Consequent to the 2008 global financial crisis, there has been a large change in economic thinking as policy-makers have struggled to overcome the economic misfortunes caused by the crisis. Amongst the emerging countries, the BRICS countries have in effect, established a New Development Bank to play the role of the credit facilitator the BRICS countries and other emerging countries as well. This BRICS New Development Bank was established in 2014 and already has identified and funded some projects within the BRICS countries. Moreover, the main objective of this bank is to provide credit to be utilised for infrastructure, climate change measures, as well as to ensure sustainable development. Against this backdrop, the current study investigates the role played by credit and the extent of development in credit markets on enhancing growth in the BRICS countries, particularly looking at the levels of inflation that are conducive to credit market development. The study notes that in order for credit expansion to be successful, the credit received by a country must reflect positively on a country’s economic growth. In other words, with more credit coming into a country, the expected result is that there will also be a rise in economic growth. Furthermore, seeing that inflation erodes the value of money, this credit or these funds that a country receives may not have the expected influence on growth. Therefore, the study finds it imperative to investigate the levels at which inflation allows for credit expansion to promote growth in a country. Furthermore, central banks play an important role in credit markets via the interest rate channel and the study examines the role of monetary policy in credit markets of each of the BRICS countries by looking at the inflation targeting regime as well as the absence thereof within these countries. Moreover, BRICS central banks share more or less the same goal of maintaining price stability and low inflation through various monetary policy tools. Therefore, achieving this objective will allow a central bank to gain both investor and consumer confidence which plays a role in a country’s investment rates. Moreover, inflation that is not controlled results in uncertainty which makes investors hesitant and unwilling to embark on investments. Ha, Ivanova, Ohnsorge and Unsal (2019) associate a developed financial sector with low inflation, stating that stable inflation rates eliminate uncertainty and avoids the erosion of the value of money. The current study used an Autoregressive Distributed Lag (ARDL) model to examine the linear co-integration and Non-linear Autoregressive Distributed Lag (NARDL) for the non-linear empirical analysis of the relationship between inflation, credit markets and economic growth in BRICS countries. The non-linearity of this relationship is important to study as there has been many debates on the nature of the inflation-growth relationships with some studies implying that it is positive, some say it is a negative relationship and some say it is non-linear. The annual data time series is extracted from the World Bank Indicators and the Penn State database covering the period 1960-2019. The main variables used in the study are Inflation (CPI), Credit (Domestic Credit to Private Sector) and Economic growth (GDP). The study conducted various regressions including the total of five linear regressions which were run individually for each country, the non-linear regressions consisted of three regressions for each country which were on 1) Only Inflation partitioned, (2) Only Credit partitioned and (3) both Inflation and Credit were partitioned. The partitioning of the variables is made possible by the NARDL model which allows variables to be partially decomposed into negative and positive sums to identify thresholds of variables which have various effects on other variables. The overall findings of the study suggest that although inflation exerts various effects on growth, according to this study’s results, it does not have a significant impact on credit for all the countries except for China whereby credit in general is conducive to economic growth and Brazil where growth is enhanced when credit is declining. The study revealed that generally, inflation exerts a negative impact on growth, therefore, authorities must focus on keeping inflation rates low particularly for Russia, India and South Africa as Brazil’s results suggest that rising inflation is conducive to its economic growth in the long run. According to the findings of this study, credit does not have the significant impact on growth even under different inflation thresholds. Furthermore, this does not imply that the credit channel is a futile tool for authorities, the relationship between inflation, credit and growth particularly with the hypothesis that inflation enhances credit market development and therefore growth, is not significant. , Thesis (MCom) -- Faculty of Business and Economic Sciences, School of Economics, Development & Tourism, 2021
- Full Text:
- Date Issued: 2021-12
Inflation, exchange rate and unemployment nexuses in South Africa: lessons from the Inflation Targeting Framework
- Taderera, Christie Simbarashe
- Authors: Taderera, Christie Simbarashe
- Date: 2021-12
- Subjects: Foreign exchange rates -- South Africa , Inflation (Finance) -- South Africa , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54752 , vital:47656
- Description: Unemployment, inflation and exchange rate are key macroeconomic indicators and determinants of the development of a nation, but their relationship remain ambiguous. From the last quarter of 1994 to the same period in 2019, unemployment in South Africa increased from 20 percent to 29.1 percent while over the same period, inflation fell from 15 percent to 4.5 percent. Exchange rate at the same time has increased from 3.55Rand: 1USD to 14.45Rand: 1USD (World Bank Data, 2020). With the adoption of inflation targeting framework as a way of stabilising the general price level which has a trickle effect on unemployment, South Africa has a relatively high unemployment rate of 29.1 percent. This study investigates the relationship between unemployment, inflation and exchange rate in South Africa from 2009 Quarter 1 to 2020 Quarter 1. Furthermore, the study examines the relationship between employment, inflation and exchange rate from 1970 to 2019. Lastly the study investigates the inflation threshold from 1970 to 2019. The study employs the Autoregressive Distributed Lag (ARDL) model and shows that there is no short run and long run relationship between unemployment, inflation and exchange rate. There was however a short run and long run relationship between employment, inflation, exchange rate. In a long run analysis, there is a positive relationship between employment and economic growth for both in the short run and long run. Using the conditional least squares method, an inflation threshold of 5% was found to maximise employment in South Africa vindicating the inflation target of 3-5 percent. Based on the findings of this study, it is recommended that policy measures that increase government expenditure and economic growth be made. Thus, policy makers should increase government expenditure, either by running budget deficits or by collecting more revenue to finance its expenditures so as to increase employment or decrease unemployment without incurring the risk of crowding out. Additionally, from the inflation threshold examination, the current interest rate manipulation by raising or lowering the rate must be used to ensure inflation is kept below 5 per cent. , Thesis (MCom) -- Faculty of Business and Economic Sciences, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Taderera, Christie Simbarashe
- Date: 2021-12
- Subjects: Foreign exchange rates -- South Africa , Inflation (Finance) -- South Africa , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54752 , vital:47656
- Description: Unemployment, inflation and exchange rate are key macroeconomic indicators and determinants of the development of a nation, but their relationship remain ambiguous. From the last quarter of 1994 to the same period in 2019, unemployment in South Africa increased from 20 percent to 29.1 percent while over the same period, inflation fell from 15 percent to 4.5 percent. Exchange rate at the same time has increased from 3.55Rand: 1USD to 14.45Rand: 1USD (World Bank Data, 2020). With the adoption of inflation targeting framework as a way of stabilising the general price level which has a trickle effect on unemployment, South Africa has a relatively high unemployment rate of 29.1 percent. This study investigates the relationship between unemployment, inflation and exchange rate in South Africa from 2009 Quarter 1 to 2020 Quarter 1. Furthermore, the study examines the relationship between employment, inflation and exchange rate from 1970 to 2019. Lastly the study investigates the inflation threshold from 1970 to 2019. The study employs the Autoregressive Distributed Lag (ARDL) model and shows that there is no short run and long run relationship between unemployment, inflation and exchange rate. There was however a short run and long run relationship between employment, inflation, exchange rate. In a long run analysis, there is a positive relationship between employment and economic growth for both in the short run and long run. Using the conditional least squares method, an inflation threshold of 5% was found to maximise employment in South Africa vindicating the inflation target of 3-5 percent. Based on the findings of this study, it is recommended that policy measures that increase government expenditure and economic growth be made. Thus, policy makers should increase government expenditure, either by running budget deficits or by collecting more revenue to finance its expenditures so as to increase employment or decrease unemployment without incurring the risk of crowding out. Additionally, from the inflation threshold examination, the current interest rate manipulation by raising or lowering the rate must be used to ensure inflation is kept below 5 per cent. , Thesis (MCom) -- Faculty of Business and Economic Sciences, 2021
- Full Text:
- Date Issued: 2021-12
Integration of clinical legal education with procedural law modules
- Authors: Welgemoed, Marc
- Date: 2021-12
- Subjects: Law -- Study and teaching (Clinical education) , Procedure law
- Language: English
- Type: Doctoral theses , Thesis
- Identifier: http://hdl.handle.net/10948/56123 , vital:55571
- Description: This research evaluates the role that Clinical Legal Education (CLE) can and should play in the teaching and learning of procedural law modules, ie Civil Procedure, Criminal Procedure and the Law of Evidence. It is argued that the doctrine of transformative constitutionalism provides a sound theoretical basis for the integration of CLE in the teaching and learning of procedural law modules in that there is a constitutional imperative on law schools to train law graduates, who are ready for entry into legal practice, as far as adequate theoretical knowledge and practical skills are concerned. This research provides an indication of how the integration of CLE with procedural law modules can improve the appreciation of the values of the Constitution of the Republic of South Africa 108 of 1996 by law graduates. Graduates will learn the importance of advancing social and procedural justice when rendering legal services to members of the public. Furthermore, graduates will be equipped with valuable graduate attributes required for legal practice. The conclusion of this research is that an integrated teaching and learning methodology, in relation to procedural law modules, will result in producing better law graduates for legal practice. The result of this will be that future legal practitioners, who can serve the public in a professional, ethical and accountable manner as envisaged by the Legal Practice Act 28 of 2014, immediately after graduating from law schools, will be produced. , Thesis (LLD) -- Faculty of Law, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Welgemoed, Marc
- Date: 2021-12
- Subjects: Law -- Study and teaching (Clinical education) , Procedure law
- Language: English
- Type: Doctoral theses , Thesis
- Identifier: http://hdl.handle.net/10948/56123 , vital:55571
- Description: This research evaluates the role that Clinical Legal Education (CLE) can and should play in the teaching and learning of procedural law modules, ie Civil Procedure, Criminal Procedure and the Law of Evidence. It is argued that the doctrine of transformative constitutionalism provides a sound theoretical basis for the integration of CLE in the teaching and learning of procedural law modules in that there is a constitutional imperative on law schools to train law graduates, who are ready for entry into legal practice, as far as adequate theoretical knowledge and practical skills are concerned. This research provides an indication of how the integration of CLE with procedural law modules can improve the appreciation of the values of the Constitution of the Republic of South Africa 108 of 1996 by law graduates. Graduates will learn the importance of advancing social and procedural justice when rendering legal services to members of the public. Furthermore, graduates will be equipped with valuable graduate attributes required for legal practice. The conclusion of this research is that an integrated teaching and learning methodology, in relation to procedural law modules, will result in producing better law graduates for legal practice. The result of this will be that future legal practitioners, who can serve the public in a professional, ethical and accountable manner as envisaged by the Legal Practice Act 28 of 2014, immediately after graduating from law schools, will be produced. , Thesis (LLD) -- Faculty of Law, 2021
- Full Text:
- Date Issued: 2021-12
Investigating customary marriage conflict among the Ndebele speaking people in Mathula Village in Limpopo Province
- Authors: Msiza, Dina
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54504 , vital:46618
- Description: Recognition of Customary Marriages Act of 1998 in South Africa remains one of the greatest initiatives towards equality amongst spouses. However, even with the RCMA of 1998 that is set to regulate customary marriages, customary marriage conflict remains rife across various ethnic groups in South Africa. The RCMA of 1998 leaves a lot of room for interpretation by different cultures and some elements that certain ethnic groups consider as crucial in fulfilling customary marriages are excluded. So, to contribute to Conflict Studies with reference to customary marriage conflict, this study investigated customary marriage conflict among Ndebele speaking people in Mathula Village in Limpopo. The purpose of this study was to investigate the causes of customary marriage among Ndebele speaking people in Mathula Village in Limpopo. Data was collected through semi-structured interviews and analysed through content analysis, coding, and thematic analysis. During the interviews, non-participant observation was used. Purposeful sampling was used to select participants. In the final analysis, this study provides some recommendations with the view of addressing some of the challenges that were identified. Some of the recommendations include that there is a need to rethink the process of customary marriage in relation to the payment of lobola. Further, there is a need for an in-depth research going forward. , Thesis (MA) -- Faculty of Humanities, School of Governmental and Social Sciences, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Msiza, Dina
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54504 , vital:46618
- Description: Recognition of Customary Marriages Act of 1998 in South Africa remains one of the greatest initiatives towards equality amongst spouses. However, even with the RCMA of 1998 that is set to regulate customary marriages, customary marriage conflict remains rife across various ethnic groups in South Africa. The RCMA of 1998 leaves a lot of room for interpretation by different cultures and some elements that certain ethnic groups consider as crucial in fulfilling customary marriages are excluded. So, to contribute to Conflict Studies with reference to customary marriage conflict, this study investigated customary marriage conflict among Ndebele speaking people in Mathula Village in Limpopo. The purpose of this study was to investigate the causes of customary marriage among Ndebele speaking people in Mathula Village in Limpopo. Data was collected through semi-structured interviews and analysed through content analysis, coding, and thematic analysis. During the interviews, non-participant observation was used. Purposeful sampling was used to select participants. In the final analysis, this study provides some recommendations with the view of addressing some of the challenges that were identified. Some of the recommendations include that there is a need to rethink the process of customary marriage in relation to the payment of lobola. Further, there is a need for an in-depth research going forward. , Thesis (MA) -- Faculty of Humanities, School of Governmental and Social Sciences, 2021
- Full Text:
- Date Issued: 2021-12
Investigating the consumer decision-making process and determinants of choice for prepaid services from mobile network service providers
- Authors: Ajayi, Ella
- Date: 2021-12
- Subjects: Mobile communication systems , Consumer behavior
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/53688 , vital:45713
- Description: The mobile telecommunications industry has been a fundamental and an important enabler in the advancement of the South African economy, with mobile network providers investing billions of rands in mobile infrastructure and facilitating a functional and progressive global marketplace (ICASA Annual Performance Plan, 2020/21). South Africa’s telecommunications system is one of the most sophisticated in the emerging markets, and according to Gillwald, Mothobi, and Rademan (2018, p.6), various indices including the ICT Development Index corroborate this view. The deployment of wireless communications networks in the country has had immeasurable social benefits for many consumers. The most rural areas of the country are now able to experience the convenience and ubiquity that comes with having access to mobile network technology. Though mobile network provision is making progress in terms of bridging the digital divide, inhibitors exist within the mobile competitive landscape that prevent consumers from exploring the full benefits of the advanced technologies at their disposal. According to Chinembiri (2020, p.6), mobile data costs remain high and out of reach for the average South African consumer, despite the recent requisite data price reduction by the dominant mobile network service providers. The prepaid segment is dominated by customers who either carry multiple SIM cards or switch between mobile network operators. The adoption by ICASA of the Mobile Number Portability (MNP), the process through which customers switch between mobile operators and keep their mobile number (Yadav, Dabhade, & Dabhade, 2013, p.1), resulted in significant reduction in switching costs thus perpetuating the migration of subscribers between mobile network providers. According to Olufemi and Strydom (2018, p. 52), the fiercest competition experienced by South African mobile providers is in the prepaid market. , Thesis (MBA) -- Faculty of Business and Economic Sciences, Business School, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Ajayi, Ella
- Date: 2021-12
- Subjects: Mobile communication systems , Consumer behavior
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/53688 , vital:45713
- Description: The mobile telecommunications industry has been a fundamental and an important enabler in the advancement of the South African economy, with mobile network providers investing billions of rands in mobile infrastructure and facilitating a functional and progressive global marketplace (ICASA Annual Performance Plan, 2020/21). South Africa’s telecommunications system is one of the most sophisticated in the emerging markets, and according to Gillwald, Mothobi, and Rademan (2018, p.6), various indices including the ICT Development Index corroborate this view. The deployment of wireless communications networks in the country has had immeasurable social benefits for many consumers. The most rural areas of the country are now able to experience the convenience and ubiquity that comes with having access to mobile network technology. Though mobile network provision is making progress in terms of bridging the digital divide, inhibitors exist within the mobile competitive landscape that prevent consumers from exploring the full benefits of the advanced technologies at their disposal. According to Chinembiri (2020, p.6), mobile data costs remain high and out of reach for the average South African consumer, despite the recent requisite data price reduction by the dominant mobile network service providers. The prepaid segment is dominated by customers who either carry multiple SIM cards or switch between mobile network operators. The adoption by ICASA of the Mobile Number Portability (MNP), the process through which customers switch between mobile operators and keep their mobile number (Yadav, Dabhade, & Dabhade, 2013, p.1), resulted in significant reduction in switching costs thus perpetuating the migration of subscribers between mobile network providers. According to Olufemi and Strydom (2018, p. 52), the fiercest competition experienced by South African mobile providers is in the prepaid market. , Thesis (MBA) -- Faculty of Business and Economic Sciences, Business School, 2021
- Full Text:
- Date Issued: 2021-12
Mangrove response to water level changes at the Nxaxo-Ngqusi and St Lucia Estuaries
- Authors: Julie, Corianna Lauren
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/53644 , vital:45689
- Description: Water level variability within an estuary can vary as a function of tides (inundation frequency and duration) and rainfall, acting as one of the main determinants of mangrove growth, diversity, productivity, and distribution. Understanding how mangroves respond in estuaries to water level variability provides baseline information which can be used to predict future changes in mangrove growth and distribution in response to this driver This study measured mangrove characteristics (growth, structure, and areal extent) in two estuaries that differed in tidal setting, and thus water variability; the Nxaxo-Ngqusi and St Lucia estuaries, South Africa. These estuaries are part of a long-term monitoring programme (2010 - 2020) that has recorded mangrove responses to environmental changes. At the Nxaxo-Ngqusi Estuary, long-tem sea-level data (2003 – 2018) collected from the nearest tide gauge, and mangrove growth and areal extent were used to assess mangrove characteristics in a permanently open, micro tidal setting.Additionally, short-term water level data (August 2019 – September 2020), measured with in situ loggers, and sediment input at different sites within the mangrove forest, were also measured. Data was collected along the main channel sites, and at previously set up cattle exclusion plots ( browsed and non-browsed sites set to establish the effect of cattle browsing on mangroves). Similarly, at the St Lucia Estuary, long term water level data (2004 – 2020) collected at the bridge in the lower reaches of the estuary by Ezemvelo KZN-Wildlife, and annual mangrove growth, structure and areal extent data were used to assess mangrove characteristics in an estuarine lake that undergoes cycles between hypersaline and freshwater-dominated states. The results showed that mangrove responses to water level changes are complex and depend on several factors such as estuary mouth dynamics, anthropogenic activities, and site-level environmental conditions. The first objective was to compare water level changes and mangrove structure (mangrove height, and pneumatophore characteristics such as height, density and % aerenchyma) and sediment input between different sites at each estuary. Mangrove growth was higher at sites where longer inundation and higher inundation frequency were recorded at the Nxaxo-Ngqusi Estuary. However,longer inundation periods under closed mouth conditions resulted in stunted growth and mangrove dieback at St Lucia Estuary. At the Nxaxo-Ngqusi Estuary, mangroves at the main channel sites, closer to the water’s edge, had an overall higher growth rate (2.8 – 45.9 cm yr-1) than the mangroves found at the browsed (0 – 25 cm yr-1) and non-browsed sites (0 – 25.3 cm yr-1) on the landward edge of the forest. The effect of cattle browsing at these sites forms part of a long-term monitoring programme and this disturbance could have also influenced the results. Mangrove growth rate was higher in years with more rainfall at all sites within the estuary. At the St Lucia Estuary, mangrove growth rate was highest (0.81 cm yr-1) at a lower mean water level range (0.13 – 1.72 m) between 2010 - 2015, and growth rate was lowest (1.3 cm yr-1) in higher mean water level range conditions (0.34 m – 2.18 m) between 2015 – 2020. When water levels increased by up to 1.1 m due to closed mouth conditions, this led to extensive mangrove dieback further upstream by 2015. The maximum tidal flooding depth and inundation period influenced pneumatophore structure (height, density, and % aerenchyma) at the Nxaxo-Ngqusi Estuary. Sediment accumulation was highest at sites with increased pneumatophore density, but accumulation rates at the Nxaxo-Ngqusi Estuary (0.4 – 0.7 g over a high tide lasting 4-5 hours) were low and did not lead to smothering of the pneumatophores. Total sediment accumulation was highest at sites that experienced greater flooding depths. Increased inundation at the St Lucia Estuary caused inundation stress which led to mangrove mortality. This is because these mangroves are found in a closed estuary where increased water levels lead to prolonged submergence of the pneumatophores. A decrease in mangrove area was recorded at both sites. Low rainfall coupled with cattle browsing caused a decrease in mangrove area of 22% between 2009 and 2019, particularly along the mangrove fringe area at the Nxaxo-Ngqusi Estuary. The mangroves at the St Lucia Estuary, however, experienced mangrove dieback at all sites, with Site 1 recording the greatest percentage decrease in area of 71.7 % (loss of 44.76 ha) between 2010 and 2020. This was related to the progressive increase of freshwater input and water level at St Lucia Estuary under closed mouth conditions. The years leading up to 2019 had peaks in water levels at the St Lucia Estuary, with the highest water level of 2.12 m in 2019 since 2002. As a consequence, there was increased reed growth, where reeds expanded by 58% (177 ha) due to the high influx of freshwater, and no tidal exchange, which occurred in conjunction with a loss of 60.% (42 ha) of the original mangrove extent at the St Lucia Estuary. This study shows that increased water level changes (inundation frequency and duration) at the Nxaxo-Ngqusi Estuary maintain healthy mangrove stands. This is in contrast to the St Lucia Estuary, where there was a loss of mangroves as a result of high water levels under closed mouth conditions. Mangrove growth and extent at the Nxaxo-Ngqusi Estuary fluctuated in response to drought, and trampling and browsing by livestock. Extensive inundation and lack of tidal exchange reduced mangrove growth and extent at the St Lucia Estuary, with mangrove dieback occurring at all sites. These two systems are representative of the dynamic conditions found in South African estuaries. These research findings suggest that the continuous effects of climate change on estuarine habitats could result in changes in estuary mouth dynamics, which could impact mangrove growth, structure, and extent. , Thesis (MSc) -- Faculty of Science, School of Environmental Sciences, 2021
- Full Text: false
- Date Issued: 2021-12
- Authors: Julie, Corianna Lauren
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/53644 , vital:45689
- Description: Water level variability within an estuary can vary as a function of tides (inundation frequency and duration) and rainfall, acting as one of the main determinants of mangrove growth, diversity, productivity, and distribution. Understanding how mangroves respond in estuaries to water level variability provides baseline information which can be used to predict future changes in mangrove growth and distribution in response to this driver This study measured mangrove characteristics (growth, structure, and areal extent) in two estuaries that differed in tidal setting, and thus water variability; the Nxaxo-Ngqusi and St Lucia estuaries, South Africa. These estuaries are part of a long-term monitoring programme (2010 - 2020) that has recorded mangrove responses to environmental changes. At the Nxaxo-Ngqusi Estuary, long-tem sea-level data (2003 – 2018) collected from the nearest tide gauge, and mangrove growth and areal extent were used to assess mangrove characteristics in a permanently open, micro tidal setting.Additionally, short-term water level data (August 2019 – September 2020), measured with in situ loggers, and sediment input at different sites within the mangrove forest, were also measured. Data was collected along the main channel sites, and at previously set up cattle exclusion plots ( browsed and non-browsed sites set to establish the effect of cattle browsing on mangroves). Similarly, at the St Lucia Estuary, long term water level data (2004 – 2020) collected at the bridge in the lower reaches of the estuary by Ezemvelo KZN-Wildlife, and annual mangrove growth, structure and areal extent data were used to assess mangrove characteristics in an estuarine lake that undergoes cycles between hypersaline and freshwater-dominated states. The results showed that mangrove responses to water level changes are complex and depend on several factors such as estuary mouth dynamics, anthropogenic activities, and site-level environmental conditions. The first objective was to compare water level changes and mangrove structure (mangrove height, and pneumatophore characteristics such as height, density and % aerenchyma) and sediment input between different sites at each estuary. Mangrove growth was higher at sites where longer inundation and higher inundation frequency were recorded at the Nxaxo-Ngqusi Estuary. However,longer inundation periods under closed mouth conditions resulted in stunted growth and mangrove dieback at St Lucia Estuary. At the Nxaxo-Ngqusi Estuary, mangroves at the main channel sites, closer to the water’s edge, had an overall higher growth rate (2.8 – 45.9 cm yr-1) than the mangroves found at the browsed (0 – 25 cm yr-1) and non-browsed sites (0 – 25.3 cm yr-1) on the landward edge of the forest. The effect of cattle browsing at these sites forms part of a long-term monitoring programme and this disturbance could have also influenced the results. Mangrove growth rate was higher in years with more rainfall at all sites within the estuary. At the St Lucia Estuary, mangrove growth rate was highest (0.81 cm yr-1) at a lower mean water level range (0.13 – 1.72 m) between 2010 - 2015, and growth rate was lowest (1.3 cm yr-1) in higher mean water level range conditions (0.34 m – 2.18 m) between 2015 – 2020. When water levels increased by up to 1.1 m due to closed mouth conditions, this led to extensive mangrove dieback further upstream by 2015. The maximum tidal flooding depth and inundation period influenced pneumatophore structure (height, density, and % aerenchyma) at the Nxaxo-Ngqusi Estuary. Sediment accumulation was highest at sites with increased pneumatophore density, but accumulation rates at the Nxaxo-Ngqusi Estuary (0.4 – 0.7 g over a high tide lasting 4-5 hours) were low and did not lead to smothering of the pneumatophores. Total sediment accumulation was highest at sites that experienced greater flooding depths. Increased inundation at the St Lucia Estuary caused inundation stress which led to mangrove mortality. This is because these mangroves are found in a closed estuary where increased water levels lead to prolonged submergence of the pneumatophores. A decrease in mangrove area was recorded at both sites. Low rainfall coupled with cattle browsing caused a decrease in mangrove area of 22% between 2009 and 2019, particularly along the mangrove fringe area at the Nxaxo-Ngqusi Estuary. The mangroves at the St Lucia Estuary, however, experienced mangrove dieback at all sites, with Site 1 recording the greatest percentage decrease in area of 71.7 % (loss of 44.76 ha) between 2010 and 2020. This was related to the progressive increase of freshwater input and water level at St Lucia Estuary under closed mouth conditions. The years leading up to 2019 had peaks in water levels at the St Lucia Estuary, with the highest water level of 2.12 m in 2019 since 2002. As a consequence, there was increased reed growth, where reeds expanded by 58% (177 ha) due to the high influx of freshwater, and no tidal exchange, which occurred in conjunction with a loss of 60.% (42 ha) of the original mangrove extent at the St Lucia Estuary. This study shows that increased water level changes (inundation frequency and duration) at the Nxaxo-Ngqusi Estuary maintain healthy mangrove stands. This is in contrast to the St Lucia Estuary, where there was a loss of mangroves as a result of high water levels under closed mouth conditions. Mangrove growth and extent at the Nxaxo-Ngqusi Estuary fluctuated in response to drought, and trampling and browsing by livestock. Extensive inundation and lack of tidal exchange reduced mangrove growth and extent at the St Lucia Estuary, with mangrove dieback occurring at all sites. These two systems are representative of the dynamic conditions found in South African estuaries. These research findings suggest that the continuous effects of climate change on estuarine habitats could result in changes in estuary mouth dynamics, which could impact mangrove growth, structure, and extent. , Thesis (MSc) -- Faculty of Science, School of Environmental Sciences, 2021
- Full Text: false
- Date Issued: 2021-12
Mapping the importance of public participation in the expropriation of land without compensation bill: a case of Silver Town in KwaZakhele, Port Elizabeth
- Authors: Ngwabeni, Siyasanga
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54541 , vital:46686
- Description: The post-1994 era in the South African public imagination was envisaged to herald widespread and transformative efforts to reverse the gross injustices and human rights violations inflicted over many decades of apartheid and colonialism. One of the key measures initiated by the democratic government to drive this nation building project was the land reform programme. The ‘land question’, which is a popular tagline in South Africa when reference is made to land reform, has come to define the general discourse of socioeconomic disadvantage and change in the post-apartheid and post-colonial period – similarly to other former settler colonies in the African continent and the broader Global South. For South Africa though, this specific issue has been characterised by numerous challenges and failures largely at the level of the state, wherein a significant lack of public engagement, public participation and democratic redistribution was not being done according to ‘the will of the people’. On a number of occasions, the South African state has gone on a ‘solo crusade’ to implement the land reform programme under complex conditions that are largely unfavoured by ordinary people ‘on the ground’ – especially those who were the primary victims of land dispossession under colonialism and apartheid. As a result, over the past few years, indigenous black communities across the country especially in (semi)urban and township areas have voluntarily ‘occupied’ land at their own will and sometimes ‘illegally’, as a way to take up settlement space and determine their lives on the land of their birth. Beyond the public discourse of ‘land invasions’ and ‘failed land reform projects’, this study was conducted to closely understand the extent to which public engagement and participation has been integral in the systematic mechanism(s) to transform the patterns of land ownership and control in the democratic South Africa. To do this, the site of KwaZakhele, Silvertown, in Port Elizabeth was selected to conduct the study. This township is an outcome of apartheid geography and land dispossession where many generations of indigenous black people were displaced. Today, it is a struggling community characterised by high rates of poverty and unemployment – and one of its unresolved socio-political issues is the question of the skewed patterns of land ownership in the area. Methodologically, qualitative semi-structured interviews were utilised to conduct the study and the Marxist Concept of Citizenship was selected as a theoretical framework for the study by the researcher. The study has found that, amongst the general legislative and political shortfalls of public participation breakdown, there are other deep seated structural socioeconomic issues that are at the root of the problem – such as economic inequalities and very low prospects of social mobility – which collectively reproduce the persistent inadequacies of political instability and social unrest in the area. The study recommends an astute combination of ‘bottom-up’ active citizenship and major socioeconomic transformation in the area as a systematic and structural mechanism to empower the community of Silvertown to be the champion of its own liberation struggle for the freedom of its people to own land and democratically participate in their own governance, self-determination, and prosperity. , Thesis (MA) -- Faculty of Humanities, School of Governmental and Social Sciences, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Ngwabeni, Siyasanga
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54541 , vital:46686
- Description: The post-1994 era in the South African public imagination was envisaged to herald widespread and transformative efforts to reverse the gross injustices and human rights violations inflicted over many decades of apartheid and colonialism. One of the key measures initiated by the democratic government to drive this nation building project was the land reform programme. The ‘land question’, which is a popular tagline in South Africa when reference is made to land reform, has come to define the general discourse of socioeconomic disadvantage and change in the post-apartheid and post-colonial period – similarly to other former settler colonies in the African continent and the broader Global South. For South Africa though, this specific issue has been characterised by numerous challenges and failures largely at the level of the state, wherein a significant lack of public engagement, public participation and democratic redistribution was not being done according to ‘the will of the people’. On a number of occasions, the South African state has gone on a ‘solo crusade’ to implement the land reform programme under complex conditions that are largely unfavoured by ordinary people ‘on the ground’ – especially those who were the primary victims of land dispossession under colonialism and apartheid. As a result, over the past few years, indigenous black communities across the country especially in (semi)urban and township areas have voluntarily ‘occupied’ land at their own will and sometimes ‘illegally’, as a way to take up settlement space and determine their lives on the land of their birth. Beyond the public discourse of ‘land invasions’ and ‘failed land reform projects’, this study was conducted to closely understand the extent to which public engagement and participation has been integral in the systematic mechanism(s) to transform the patterns of land ownership and control in the democratic South Africa. To do this, the site of KwaZakhele, Silvertown, in Port Elizabeth was selected to conduct the study. This township is an outcome of apartheid geography and land dispossession where many generations of indigenous black people were displaced. Today, it is a struggling community characterised by high rates of poverty and unemployment – and one of its unresolved socio-political issues is the question of the skewed patterns of land ownership in the area. Methodologically, qualitative semi-structured interviews were utilised to conduct the study and the Marxist Concept of Citizenship was selected as a theoretical framework for the study by the researcher. The study has found that, amongst the general legislative and political shortfalls of public participation breakdown, there are other deep seated structural socioeconomic issues that are at the root of the problem – such as economic inequalities and very low prospects of social mobility – which collectively reproduce the persistent inadequacies of political instability and social unrest in the area. The study recommends an astute combination of ‘bottom-up’ active citizenship and major socioeconomic transformation in the area as a systematic and structural mechanism to empower the community of Silvertown to be the champion of its own liberation struggle for the freedom of its people to own land and democratically participate in their own governance, self-determination, and prosperity. , Thesis (MA) -- Faculty of Humanities, School of Governmental and Social Sciences, 2021
- Full Text:
- Date Issued: 2021-12
Marine Plastic Pollution
- Vilakazi, Bathobile Thandazile Unittah
- Authors: Vilakazi, Bathobile Thandazile Unittah
- Date: 2021-12
- Subjects: Waste minimization --Law and legislation -- South Africa , Plastic marine debris , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/55605 , vital:53364
- Description: Human activities can alter the ordinary operation of Earth-system processes in such a way that it escalates risks in societies across the globe. One of the more visible human activities is the production, consumption and disposal of plastic items and/or materials, the consequences of which are borne by marine life. The dissertation is founded on the premise that conservation of the marine environment must be a priority for all States. States must take responsibility for the prevention of pollution of the marine environment and further take accountability where activities within their territory are causing pollution of the marine environment through the enforcement of legislative measures. The dissertation is drafted in a manner that aims to ultimately deduce whether the current pollution laws in South Africa adequately address marine plastic pollution (MPP). As such, Chapter Two relies on the regulatory position of MPP at the international level. Various legal instruments relating to marine pollution are expounded on such as the LOSC, MARPOL, London Convention and other regional instruments relating particularly to the African continent. The chapter aims to detail the most relevant global instruments that South Africa is a party to and which promote and mandate States parties to protect the marine environment through the implementation and enforcement of regulatory measures. The global measures either exclusively address MPP or provide general provisions for marine environment protection. Chapter Three and Four of the dissertation provide a critical analysis of the legal measures adopted at the national, provincial and local levels respectively to control, reduce and prevent pollution, including MPP. The Constitution of the Republic of South Africa, 1996 requires the national, provincial and local levels of government to co-operate with each other to provide ―effective, efficient, transparent, accountable and coherent governance‖. Therefore, it is essential for this study to investigate the regulation of MPP at all levels of government particularly when the programmes of the national and provincial government must be implemented by local government. The regulatory measures at these levels of government promote the protection of the environment and further prohibit the illegal dumping of waste and littering. They also encourage communities to reduce, re-use and recycle waste. Additionally, the national government further commits itself to adopting regulations to x plastic carrier bags and plastic flat bags. These regulations will urge the plastic industry to produce recyclable plastic bags which will further encourage consumers to recycle and therefore, decrease the entry of plastic into the marine environment. The conclusion in Chapter Five is inferred from Chapter One to Chapter Four of the dissertation. Several shortcomings were observed in the regulatory measures discussed in Chapter Three and Chapter Four, most of which relate to a legal framework weakened by a lack of knowledge on MPP and therefore, an inability to firstly develop measures that expressly deal with the issue, or secondly, develop comprehensive legislative measures that address various types of marine pollution. It is therefore submitted that although South Africa‘s pollution laws in general are exceptional and do address marine pollution, they fail to address MPP sufficiently. As such, Chapter Five presents several policy recommendations in reaction to the findings. , Thesis (LLM) -- Faculty of Law , Public Law, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Vilakazi, Bathobile Thandazile Unittah
- Date: 2021-12
- Subjects: Waste minimization --Law and legislation -- South Africa , Plastic marine debris , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/55605 , vital:53364
- Description: Human activities can alter the ordinary operation of Earth-system processes in such a way that it escalates risks in societies across the globe. One of the more visible human activities is the production, consumption and disposal of plastic items and/or materials, the consequences of which are borne by marine life. The dissertation is founded on the premise that conservation of the marine environment must be a priority for all States. States must take responsibility for the prevention of pollution of the marine environment and further take accountability where activities within their territory are causing pollution of the marine environment through the enforcement of legislative measures. The dissertation is drafted in a manner that aims to ultimately deduce whether the current pollution laws in South Africa adequately address marine plastic pollution (MPP). As such, Chapter Two relies on the regulatory position of MPP at the international level. Various legal instruments relating to marine pollution are expounded on such as the LOSC, MARPOL, London Convention and other regional instruments relating particularly to the African continent. The chapter aims to detail the most relevant global instruments that South Africa is a party to and which promote and mandate States parties to protect the marine environment through the implementation and enforcement of regulatory measures. The global measures either exclusively address MPP or provide general provisions for marine environment protection. Chapter Three and Four of the dissertation provide a critical analysis of the legal measures adopted at the national, provincial and local levels respectively to control, reduce and prevent pollution, including MPP. The Constitution of the Republic of South Africa, 1996 requires the national, provincial and local levels of government to co-operate with each other to provide ―effective, efficient, transparent, accountable and coherent governance‖. Therefore, it is essential for this study to investigate the regulation of MPP at all levels of government particularly when the programmes of the national and provincial government must be implemented by local government. The regulatory measures at these levels of government promote the protection of the environment and further prohibit the illegal dumping of waste and littering. They also encourage communities to reduce, re-use and recycle waste. Additionally, the national government further commits itself to adopting regulations to x plastic carrier bags and plastic flat bags. These regulations will urge the plastic industry to produce recyclable plastic bags which will further encourage consumers to recycle and therefore, decrease the entry of plastic into the marine environment. The conclusion in Chapter Five is inferred from Chapter One to Chapter Four of the dissertation. Several shortcomings were observed in the regulatory measures discussed in Chapter Three and Chapter Four, most of which relate to a legal framework weakened by a lack of knowledge on MPP and therefore, an inability to firstly develop measures that expressly deal with the issue, or secondly, develop comprehensive legislative measures that address various types of marine pollution. It is therefore submitted that although South Africa‘s pollution laws in general are exceptional and do address marine pollution, they fail to address MPP sufficiently. As such, Chapter Five presents several policy recommendations in reaction to the findings. , Thesis (LLM) -- Faculty of Law , Public Law, 2021
- Full Text:
- Date Issued: 2021-12
Microstructural characterization of Swift Heavy Ion (SHI) induced rotation in single crystal NiO
- Authors: Douglas-Henry, Danielle
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/53648 , vital:45685
- Description: Swift Heavy Ions (SHI) are characterised by having energies greater than 1 MeV per nucleon with an atomic mass greater than 6 amu. Exposure to irradiation of this type has been known to produce latent tracks in insulators. This is due to the energy loss through the material being governed by electronic excitation processes. The extent of the track formation and microstructural changes induced has been reported to be material specific. Models such as the thermal spike model have been used to explain these changes, however rough approximations are still made. A particularly under studied phenomena is the collective rotation seen in materials exposed to off-normal incidence irradiation. To date the only available experimental data is X-Ray Diffraction (XRD) spectra and surface shifts. This does not allow for depth-dependent rotation studies and very little can be deduced regarding the microstructure of the modified volume. In this study, the microstructural changes in single crystal Nickel Oxide (NiO) have been studied using electron microscopy techniques. A depth dependent investigation of the crystal rotation was performed using Selected Area Electron Diffraction (SAED), Transmission Kikuchi Diffraction (TKD) and Electron Backscatter Diffraction (EBSD). Transmission Electron Microscopy (TEM) and Scanning Transmission Electron Microscopy (STEM) were utilized to interrogate the microstructural changes facilitating the bulk rotation. Five different NiO specimens were investigated. Specimens had surfaces parallel to either the {0 0 1} or {1 1 1} planes. Ion energies used were 593 MeV, 940 MeV and 1.6 GeV, while fluences ranged from 1.0 x 1011 ions/cm² to 9.6 x 1014 ions/cm². Latent track formation in both low fluence (nonoverlapping regime) and high fluence (overlapping regime) specimens were investigated and compared. , Thesis (PhD) -- Faculty of Science, School of Computer Science, Mathematics, Physics and Statistics, 2021
- Full Text: false
- Date Issued: 2021-12
- Authors: Douglas-Henry, Danielle
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/53648 , vital:45685
- Description: Swift Heavy Ions (SHI) are characterised by having energies greater than 1 MeV per nucleon with an atomic mass greater than 6 amu. Exposure to irradiation of this type has been known to produce latent tracks in insulators. This is due to the energy loss through the material being governed by electronic excitation processes. The extent of the track formation and microstructural changes induced has been reported to be material specific. Models such as the thermal spike model have been used to explain these changes, however rough approximations are still made. A particularly under studied phenomena is the collective rotation seen in materials exposed to off-normal incidence irradiation. To date the only available experimental data is X-Ray Diffraction (XRD) spectra and surface shifts. This does not allow for depth-dependent rotation studies and very little can be deduced regarding the microstructure of the modified volume. In this study, the microstructural changes in single crystal Nickel Oxide (NiO) have been studied using electron microscopy techniques. A depth dependent investigation of the crystal rotation was performed using Selected Area Electron Diffraction (SAED), Transmission Kikuchi Diffraction (TKD) and Electron Backscatter Diffraction (EBSD). Transmission Electron Microscopy (TEM) and Scanning Transmission Electron Microscopy (STEM) were utilized to interrogate the microstructural changes facilitating the bulk rotation. Five different NiO specimens were investigated. Specimens had surfaces parallel to either the {0 0 1} or {1 1 1} planes. Ion energies used were 593 MeV, 940 MeV and 1.6 GeV, while fluences ranged from 1.0 x 1011 ions/cm² to 9.6 x 1014 ions/cm². Latent track formation in both low fluence (nonoverlapping regime) and high fluence (overlapping regime) specimens were investigated and compared. , Thesis (PhD) -- Faculty of Science, School of Computer Science, Mathematics, Physics and Statistics, 2021
- Full Text: false
- Date Issued: 2021-12
Modelling African swine fever disease in domestic pigs with culling and removal of contaminated feeds
- Authors: Ndivhuwo, Netshamutshedzi
- Date: 2021-12
- Subjects: African swine fever virus , domestic pigs-- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/55822 , vital:53895
- Description: In this study, a modelling African Swine Fever disease in domestic pigs with culling of infected pigs and removal of contaminated Feeds is studied. The goal of the study is to examine if culling of infected pigs and removal of contaminated food or water on pig farms can reduce the ASF trans mission in the domestic pig population. The SEAI-B model without control strategies is studied and analysed. It is shown that the solution for the system of model equations is both bounded and positive. We have found the disease free equilibrium point, basic reproductive number (using next generation method), local stability of disease free equilibrium (using Routh-Hurwitz criterion), global stability of disease free equilibrium, endemic equilibrium point (mathematica), existence of endemic equilibrium point, local stability of endemic equilibrium point (row echelon expression with the help of Maple 2.8) and global stability of endemic equilibrium point (Lyapunov function). Furthermore, sensitivity analysis is performed on the key parameters driving ASF Virus and to de termine their relative importance and potential impact on the dynamics of ASF Virus. Numerical result shows that if we increase the contact rate between susceptible pigs and infected pigs will re sults in increase ASF disease in the population. The SEAI-B model is reformulated incorporating culling of infected pigs and removal of contaminated food or water and analysed. Firstly, we found the disease free equilibrium point, basic reproductive number (using next generation method), local stability of disease free equilibrium point, global stability of disease free equilibrium point, endemic equilibrium point and local stability of endemic equilibrium point. Numerical result shows that if we increase culling of infected pigs and removal of contaminated food or water results in increase of susceptible pigs. The dynamic behavior of the model appears to be dependent on the culling of diseased pigs and the removal of contaminated food or water, according to numerical simulation. As a result, combining culling of infected pigs and removal of contaminated food or water as controls, it is possible to control the system in such a way that it approaches the desired state. , Thesis (MSc) -- Faculty of Sciences, School of Computer Science, Mathematics, Physics and Statistics, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Ndivhuwo, Netshamutshedzi
- Date: 2021-12
- Subjects: African swine fever virus , domestic pigs-- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/55822 , vital:53895
- Description: In this study, a modelling African Swine Fever disease in domestic pigs with culling of infected pigs and removal of contaminated Feeds is studied. The goal of the study is to examine if culling of infected pigs and removal of contaminated food or water on pig farms can reduce the ASF trans mission in the domestic pig population. The SEAI-B model without control strategies is studied and analysed. It is shown that the solution for the system of model equations is both bounded and positive. We have found the disease free equilibrium point, basic reproductive number (using next generation method), local stability of disease free equilibrium (using Routh-Hurwitz criterion), global stability of disease free equilibrium, endemic equilibrium point (mathematica), existence of endemic equilibrium point, local stability of endemic equilibrium point (row echelon expression with the help of Maple 2.8) and global stability of endemic equilibrium point (Lyapunov function). Furthermore, sensitivity analysis is performed on the key parameters driving ASF Virus and to de termine their relative importance and potential impact on the dynamics of ASF Virus. Numerical result shows that if we increase the contact rate between susceptible pigs and infected pigs will re sults in increase ASF disease in the population. The SEAI-B model is reformulated incorporating culling of infected pigs and removal of contaminated food or water and analysed. Firstly, we found the disease free equilibrium point, basic reproductive number (using next generation method), local stability of disease free equilibrium point, global stability of disease free equilibrium point, endemic equilibrium point and local stability of endemic equilibrium point. Numerical result shows that if we increase culling of infected pigs and removal of contaminated food or water results in increase of susceptible pigs. The dynamic behavior of the model appears to be dependent on the culling of diseased pigs and the removal of contaminated food or water, according to numerical simulation. As a result, combining culling of infected pigs and removal of contaminated food or water as controls, it is possible to control the system in such a way that it approaches the desired state. , Thesis (MSc) -- Faculty of Sciences, School of Computer Science, Mathematics, Physics and Statistics, 2021
- Full Text:
- Date Issued: 2021-12
Notions of Identity and place in University -Campus Architecture: The design of a school of the Built Environment at Lerotholi Polytechnic, Maseru
- Authors: Mosese, Molefi
- Date: 2021-12
- Subjects: College buildings-- Africa-- Lesotho--Designs and plans , Campus planning -- designs and plans
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/58650 , vital:59977
- Description: Lerotholi Polytechnic is an institution of higher learning located in the heart of Maseru, Lesotho, and it was established in 1905, by the then paramount chief of Lesotho, Chief Lerotholi. Through time, the Polytechnic has seen growth in infrastructure as new needs arose. According to (Dewar and Louw, 2017), universities fall within institutions with great importance to society therefore, physical environments for these institutions should be functional and inspiring to the end user. Though this haphazard growth was perceived as good by the institution, there is little evidence of rational thought in the design throughout the campus and this expansion resulted in extremely isolated buildings on site, creating vast amounts of unused spaces, lack of attention to pedestrian movement and the lack of attention to existing green areas. The study employed in this document uses both primary and secondary data gathered from desktop research. This was gathered with site visits and observations made at Lerotholi Polytechnic, Maseru, Lesotho. This thesis document is aimed at investigating and understanding the notions of identity and place in university. campus architecture.The findings reveal that the building to be designed needs to act as an edge towards the undefined side of the campus that sits on the busy road passing adjacent to campus. This should also work as an activator to the abandoned buildings that are still structurally sound near the chosen site. Furthermore, this building should act as a gateway while promoting more of the pedestrian activity.It can be concluded that “Identity” and “Place “ in campus architecture are of utmost importance and are the two elements which will be improved with the new design. These will give a sense of belonging and for the environment to be utilized well for the users within it. , Thesis (MArch) -- Faculty of Engineering, the Built Environment and Technology, School of Architecture, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Mosese, Molefi
- Date: 2021-12
- Subjects: College buildings-- Africa-- Lesotho--Designs and plans , Campus planning -- designs and plans
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/58650 , vital:59977
- Description: Lerotholi Polytechnic is an institution of higher learning located in the heart of Maseru, Lesotho, and it was established in 1905, by the then paramount chief of Lesotho, Chief Lerotholi. Through time, the Polytechnic has seen growth in infrastructure as new needs arose. According to (Dewar and Louw, 2017), universities fall within institutions with great importance to society therefore, physical environments for these institutions should be functional and inspiring to the end user. Though this haphazard growth was perceived as good by the institution, there is little evidence of rational thought in the design throughout the campus and this expansion resulted in extremely isolated buildings on site, creating vast amounts of unused spaces, lack of attention to pedestrian movement and the lack of attention to existing green areas. The study employed in this document uses both primary and secondary data gathered from desktop research. This was gathered with site visits and observations made at Lerotholi Polytechnic, Maseru, Lesotho. This thesis document is aimed at investigating and understanding the notions of identity and place in university. campus architecture.The findings reveal that the building to be designed needs to act as an edge towards the undefined side of the campus that sits on the busy road passing adjacent to campus. This should also work as an activator to the abandoned buildings that are still structurally sound near the chosen site. Furthermore, this building should act as a gateway while promoting more of the pedestrian activity.It can be concluded that “Identity” and “Place “ in campus architecture are of utmost importance and are the two elements which will be improved with the new design. These will give a sense of belonging and for the environment to be utilized well for the users within it. , Thesis (MArch) -- Faculty of Engineering, the Built Environment and Technology, School of Architecture, 2021
- Full Text:
- Date Issued: 2021-12
Ocean structures and dynamics of two open bays on the eastern Agulhas Bank
- Authors: Dlomo, Xolisa
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/53607 , vital:45680
- Description: Upwelling, bay-scale currents, fronts and mixing in Algoa Bay and St Francis Bay occur over both short and long time periods. These physical ocean dynamics drive the temporal and spatial distribution of nutrients in the bays, there by influencing primary and secondary production. Thermal gradients and fronts are driven by the wind and open ocean influences, such as the Agulhas Current, daily and seasonal variations in solar radiation, long and short period waves, air-sea fluxes, coastal trapped waves and terrestrial freshwater inflow. These phenomena are poorly understood along this part of the coastline and were the focus of this study. I investigated the dominant temperature scales of variability in both bays, to determine which isotherm is best suited to describe temperature fluctuations and thermocline spatiotemporal variability in and between the two bays. I investigated upwelling spatiotemporal variability in the two bays and tested whether upwelling occurs at the opposite sides of the bays with a change in wind direction. Thereafter studied the occurrence and drivers of winter upwelling events. The wind-driven current spatiotemporal variability and correlations were investigated at the extremities of the two bays. The daily, intra-seasonal and yearly variation in temperature structures in Algoa Bay and St. Francis Bay were mainly driven by the local winds, coastal topography, and bathymetry. The most suitable isotherm to describe thermal fluctuations and variability in Algoa Bay shallower sites was 16.5 °C and its mean depth was 16.2 m. The best isotherm for the deeper sites in Algoa Bay was 15.7 °C with a depth of 33.1 m. The average temperature and depth of the best isotherm to describe thermal fluctuations in St. Francis Bay for the shallower sites was15.80 °C and 16.83 m, and for the deeper sites it was 15.10 °C and 32.08 m. Algoa Bay showed an average cooling trend of -0.000172 °C per year, whereas in St. Francis Bay a warming average trend of 0.0188 °C per year was observed over the study period often and six years, respectively. The wind, Coriolis Effect and Ekman Transport were the main external forces that influenced upwelling throughout the year. Since the available mesoscale indices for upwelling intensity lack the resolution needed to characterize and compare inner-shelf upwelling regimes at small spatial scales, I developed a new local, quantitative index of thermal variability. Index calculations were based on hourly records of in site depth-averaged temperatures, measured at 6 sites in St. Francis Bay and at 8 sites in Algoa Bay. Using the Multivariate Upwelling Zone Index of Cooling (MUZIC) I found that Woody Cape and Blue Horizon Bay had the highest upwelling intensity in Algoa Bay and St. Francis Bay, respectively. The other sites were ordinated and ranked according to their upwelling rates and intensity. Evidence of wind-driven winter upwelling was found to be a common occurrence in both bays. There was no obvious current seasonality observed, however, strong spectral signals in the period of a weather band (4 –7 days) were present. Current structures were generally positively correlated with wind variations in both bays. Thus, when westerly/easterly winds blew the overall surface current direction was eastward/westward. I observed a pronounced current spatiotemporal variability that was driven by local winds. The Bird Island surface currents in Algoa Bay were strongly correlated at 0–lag day with the winds, however, in Cape Recife the strongest correlations were usually observed at 1–lag day highlighting the spatiotemporal influence of wind regimes on current structures in Algoa Bay. Bird Island current speeds were higher and had an obvious bimodal directional variation (south westward /north eastward) compared to Cape Recife currents, which generally had a slower current speed with a strong west-north westward direction. In St. Francis Bay, the Schoenmakerskop surface currents showed weak positive correlation with winds at 0–lag day, however, stronger negative correlations were observed at 4–lag days. The current surface speeds in Schoenmakerskop were the lowest and varied directionally between north-north eastward and south-south eastward. The basic data requirements (i.e. SST/ UTR and ADCP time series) and the simplicity of the calculations make these indices a useful tool to apply to a large number of sites nationally and internationally, and to examine the generality of community and population-level responses to physical forcing. , Thesis (PhD) -- Faculty of Science, Journalsim and Media Studies, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Dlomo, Xolisa
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/53607 , vital:45680
- Description: Upwelling, bay-scale currents, fronts and mixing in Algoa Bay and St Francis Bay occur over both short and long time periods. These physical ocean dynamics drive the temporal and spatial distribution of nutrients in the bays, there by influencing primary and secondary production. Thermal gradients and fronts are driven by the wind and open ocean influences, such as the Agulhas Current, daily and seasonal variations in solar radiation, long and short period waves, air-sea fluxes, coastal trapped waves and terrestrial freshwater inflow. These phenomena are poorly understood along this part of the coastline and were the focus of this study. I investigated the dominant temperature scales of variability in both bays, to determine which isotherm is best suited to describe temperature fluctuations and thermocline spatiotemporal variability in and between the two bays. I investigated upwelling spatiotemporal variability in the two bays and tested whether upwelling occurs at the opposite sides of the bays with a change in wind direction. Thereafter studied the occurrence and drivers of winter upwelling events. The wind-driven current spatiotemporal variability and correlations were investigated at the extremities of the two bays. The daily, intra-seasonal and yearly variation in temperature structures in Algoa Bay and St. Francis Bay were mainly driven by the local winds, coastal topography, and bathymetry. The most suitable isotherm to describe thermal fluctuations and variability in Algoa Bay shallower sites was 16.5 °C and its mean depth was 16.2 m. The best isotherm for the deeper sites in Algoa Bay was 15.7 °C with a depth of 33.1 m. The average temperature and depth of the best isotherm to describe thermal fluctuations in St. Francis Bay for the shallower sites was15.80 °C and 16.83 m, and for the deeper sites it was 15.10 °C and 32.08 m. Algoa Bay showed an average cooling trend of -0.000172 °C per year, whereas in St. Francis Bay a warming average trend of 0.0188 °C per year was observed over the study period often and six years, respectively. The wind, Coriolis Effect and Ekman Transport were the main external forces that influenced upwelling throughout the year. Since the available mesoscale indices for upwelling intensity lack the resolution needed to characterize and compare inner-shelf upwelling regimes at small spatial scales, I developed a new local, quantitative index of thermal variability. Index calculations were based on hourly records of in site depth-averaged temperatures, measured at 6 sites in St. Francis Bay and at 8 sites in Algoa Bay. Using the Multivariate Upwelling Zone Index of Cooling (MUZIC) I found that Woody Cape and Blue Horizon Bay had the highest upwelling intensity in Algoa Bay and St. Francis Bay, respectively. The other sites were ordinated and ranked according to their upwelling rates and intensity. Evidence of wind-driven winter upwelling was found to be a common occurrence in both bays. There was no obvious current seasonality observed, however, strong spectral signals in the period of a weather band (4 –7 days) were present. Current structures were generally positively correlated with wind variations in both bays. Thus, when westerly/easterly winds blew the overall surface current direction was eastward/westward. I observed a pronounced current spatiotemporal variability that was driven by local winds. The Bird Island surface currents in Algoa Bay were strongly correlated at 0–lag day with the winds, however, in Cape Recife the strongest correlations were usually observed at 1–lag day highlighting the spatiotemporal influence of wind regimes on current structures in Algoa Bay. Bird Island current speeds were higher and had an obvious bimodal directional variation (south westward /north eastward) compared to Cape Recife currents, which generally had a slower current speed with a strong west-north westward direction. In St. Francis Bay, the Schoenmakerskop surface currents showed weak positive correlation with winds at 0–lag day, however, stronger negative correlations were observed at 4–lag days. The current surface speeds in Schoenmakerskop were the lowest and varied directionally between north-north eastward and south-south eastward. The basic data requirements (i.e. SST/ UTR and ADCP time series) and the simplicity of the calculations make these indices a useful tool to apply to a large number of sites nationally and internationally, and to examine the generality of community and population-level responses to physical forcing. , Thesis (PhD) -- Faculty of Science, Journalsim and Media Studies, 2021
- Full Text:
- Date Issued: 2021-12
Optimization of liposomes for enhanced stability against degradation by gastrointestinal fluid content
- Authors: Scholtz, Carla Chleo
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54117 , vital:46305
- Description: Motivation: Liposomes are nanoparticulate carriers consisting of a hydrophobic bilayer and a hydrophilic core. Their application as drug carrier systems arises from their unique physiochemical structure, biocompatibility and biodegradability. Their biphasic nature is significant in the delivery of peptide and protein drug molecules as it is thus able to encompass both hydrophobic and hydrophilic molecules. Liposomes are actively being used for drug delivery intravenously. These formulations have been successful in reducing side effects and improving therapeutic efficacy. However, the intravenous route poses many challenges and is not the preferred route of administration amongst patients. The oral route of administration is non-invasive, and administration is of ease, therefore it is the preferred route of administration amongst patients, especially those with complex medicine regimes. Problem: The gastrointestinal tract is a harsh environment. In order for liposomes to maintain their integrity during their course they require a level of stability against gastric and intestinal fluids and its associated constituents such as gastric and pancreatic enzymes, low pH and bile acid. Methodology: Based on recommendations extrapolated from literature, the incorporation of a bile salt, sodium glycocholate, into liposomes in conjunction with coating the surface with chitosan was selected as the optimization strategies to enhance the stability of liposomes against degradation in the gastrointestinal tract. Bilosomes with encapsulated calce in were produced using the thin-film hydration method and coated with chitosan. An in vitrocalce in release assay was conducted in simulated gastric and intestinal fluids which presented with in vivo conditions in terms of pH and enzymes and additional constituents such as a bile salt. Stability was determined by the extent of digestion within the simulated fluids with time. Results: Characterization results suggested that the addition of chitosan and sodium glycocholate to the liposomal formulation has significant effects on the physiochemical properties. The colloidal dispersions could not retain their stability during storage which was noticeable during HRTEM. Despite optimization of the liposomes, in vitro studies showed significant release in both simulated gastric and intestinal fluids, with majority release seen in the presence of pepsin and pancreatic, at low pH and in the presence of bile acid. , Thesis (MSc) -- Faculty of Science, School of Computer Science, Mathematics, Physics and Statistics, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Scholtz, Carla Chleo
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54117 , vital:46305
- Description: Motivation: Liposomes are nanoparticulate carriers consisting of a hydrophobic bilayer and a hydrophilic core. Their application as drug carrier systems arises from their unique physiochemical structure, biocompatibility and biodegradability. Their biphasic nature is significant in the delivery of peptide and protein drug molecules as it is thus able to encompass both hydrophobic and hydrophilic molecules. Liposomes are actively being used for drug delivery intravenously. These formulations have been successful in reducing side effects and improving therapeutic efficacy. However, the intravenous route poses many challenges and is not the preferred route of administration amongst patients. The oral route of administration is non-invasive, and administration is of ease, therefore it is the preferred route of administration amongst patients, especially those with complex medicine regimes. Problem: The gastrointestinal tract is a harsh environment. In order for liposomes to maintain their integrity during their course they require a level of stability against gastric and intestinal fluids and its associated constituents such as gastric and pancreatic enzymes, low pH and bile acid. Methodology: Based on recommendations extrapolated from literature, the incorporation of a bile salt, sodium glycocholate, into liposomes in conjunction with coating the surface with chitosan was selected as the optimization strategies to enhance the stability of liposomes against degradation in the gastrointestinal tract. Bilosomes with encapsulated calce in were produced using the thin-film hydration method and coated with chitosan. An in vitrocalce in release assay was conducted in simulated gastric and intestinal fluids which presented with in vivo conditions in terms of pH and enzymes and additional constituents such as a bile salt. Stability was determined by the extent of digestion within the simulated fluids with time. Results: Characterization results suggested that the addition of chitosan and sodium glycocholate to the liposomal formulation has significant effects on the physiochemical properties. The colloidal dispersions could not retain their stability during storage which was noticeable during HRTEM. Despite optimization of the liposomes, in vitro studies showed significant release in both simulated gastric and intestinal fluids, with majority release seen in the presence of pepsin and pancreatic, at low pH and in the presence of bile acid. , Thesis (MSc) -- Faculty of Science, School of Computer Science, Mathematics, Physics and Statistics, 2021
- Full Text:
- Date Issued: 2021-12
Optimizing herbicide-use for the killing of eucalypt stumps
- Authors: Mavhungu, Tshilidzi
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/53857 , vital:46023
- Description: The South Africa (SA) forest industry relies on plantations of exotic forestry trees (Pinus, Acacia and Eucalyptus) to fulfil its timber requirements. With 52.0% of the afforested land in South Africa planted to various eucalypts and their hybrid combinations. Of the total area planted to eucalypts in SA, 75 000 ha is re-established annually by means of silvicultural regimes and operations matched to site productivity, desired end-product and method of regeneration. Unlike other commercially grown tree species, eucalypt species have the ability to coppice after felling. Coppicing is a common form of regeneration in South African forestry as it allows the plantation owner the option of a second timber rotation without replanting. However, if any factors affecting coppicing are compromised, and the site is to be replanted, then it is important to kill the stumps before replanting as rapid initial growth of the coppice shoots will require earlier control than that associated with normal weeding operations. Over time, various methods of woody plant control have been proposed and tested, with most of these making use of herbicides as opposed to the repeated manual removal of coppice regrowth. Globally, most industries subscribe to standards associated with sustainable production (economic, environmental and social) against which they are measured. Within SA, 80% of the forests are certified though either the Forest Stewardship Council (FSC) or International Standards Organisation (ISO) which recommend the identification and avoidance of ‘highly hazardous’ chemicals; the promotion of ‘non-chemical’ methods for pest management as an element of an integrated pest and vegetation management strategy; and the appropriate use of chemicals that are used. To test the current recommendations for killing eucalypt stumps to include other species, the potential of reducing herbicides used, and the influence of time after application on the survival of eucalypt stumps, two trials were initiated at Entabeni plantation (Venda, Limpopo) and one at Wilgeboom plantation (Bushbuckridge, Mpumalanga) between 2018 and 2020. Extending eucalypt cut-stump control practices: Most of the trial work on killing of eucalypts in SA has been conducted on Eucalyptus grandis, Eucalyptus camaldulensis or Eucalyptus macarthurii, with all grown on shorter pulpwood rotations. To extend current recommendation to include Eucalyptus cloeziana (grown on a longer rotation for poles), a trial was established in 2018 at Entabeni plantation (Limpopo Province) to quantify the interaction between Application method (basal-frill; cut-surface; foliar) and Herbicide (no herbicide applied; Roundup; Garlon; Roundup + Garlon) for the killing of 12 year-old stumps following harvesting. Assessments were carried out at 1, 3 and 6 months following application and included Stump survival, Stump quarter with coppice and Coppice heath. Relative to the control plots (100% survival), all herbicides tested were equally effective, 70–90% of the stumps killed. This study confirms previous research regarding the killing of eucalypt stumps. Roundup, Garlon or a combination of two, when applied according to label recommendations to a stump as a basal-frill or cut-surface application (within 30 minutes of felling) resulted in 70-90% of the stumps killed. , Thesis (MSc) -- Faculty of Science, School of Natural Resource Management, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Mavhungu, Tshilidzi
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/53857 , vital:46023
- Description: The South Africa (SA) forest industry relies on plantations of exotic forestry trees (Pinus, Acacia and Eucalyptus) to fulfil its timber requirements. With 52.0% of the afforested land in South Africa planted to various eucalypts and their hybrid combinations. Of the total area planted to eucalypts in SA, 75 000 ha is re-established annually by means of silvicultural regimes and operations matched to site productivity, desired end-product and method of regeneration. Unlike other commercially grown tree species, eucalypt species have the ability to coppice after felling. Coppicing is a common form of regeneration in South African forestry as it allows the plantation owner the option of a second timber rotation without replanting. However, if any factors affecting coppicing are compromised, and the site is to be replanted, then it is important to kill the stumps before replanting as rapid initial growth of the coppice shoots will require earlier control than that associated with normal weeding operations. Over time, various methods of woody plant control have been proposed and tested, with most of these making use of herbicides as opposed to the repeated manual removal of coppice regrowth. Globally, most industries subscribe to standards associated with sustainable production (economic, environmental and social) against which they are measured. Within SA, 80% of the forests are certified though either the Forest Stewardship Council (FSC) or International Standards Organisation (ISO) which recommend the identification and avoidance of ‘highly hazardous’ chemicals; the promotion of ‘non-chemical’ methods for pest management as an element of an integrated pest and vegetation management strategy; and the appropriate use of chemicals that are used. To test the current recommendations for killing eucalypt stumps to include other species, the potential of reducing herbicides used, and the influence of time after application on the survival of eucalypt stumps, two trials were initiated at Entabeni plantation (Venda, Limpopo) and one at Wilgeboom plantation (Bushbuckridge, Mpumalanga) between 2018 and 2020. Extending eucalypt cut-stump control practices: Most of the trial work on killing of eucalypts in SA has been conducted on Eucalyptus grandis, Eucalyptus camaldulensis or Eucalyptus macarthurii, with all grown on shorter pulpwood rotations. To extend current recommendation to include Eucalyptus cloeziana (grown on a longer rotation for poles), a trial was established in 2018 at Entabeni plantation (Limpopo Province) to quantify the interaction between Application method (basal-frill; cut-surface; foliar) and Herbicide (no herbicide applied; Roundup; Garlon; Roundup + Garlon) for the killing of 12 year-old stumps following harvesting. Assessments were carried out at 1, 3 and 6 months following application and included Stump survival, Stump quarter with coppice and Coppice heath. Relative to the control plots (100% survival), all herbicides tested were equally effective, 70–90% of the stumps killed. This study confirms previous research regarding the killing of eucalypt stumps. Roundup, Garlon or a combination of two, when applied according to label recommendations to a stump as a basal-frill or cut-surface application (within 30 minutes of felling) resulted in 70-90% of the stumps killed. , Thesis (MSc) -- Faculty of Science, School of Natural Resource Management, 2021
- Full Text:
- Date Issued: 2021-12
Perceptions of Nelson Mandela University social sciences post-graduate students on the decolonization of the social sciences modules
- Authors: Manduluka, Lubabalo
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54481 , vital:46603
- Description: This research project is motivated by the students 2015-2016 higher education student protest that called for the decolonization of higher education institutions. It is widely accepted that for university module to serve students properly, it should be relevant to students it should be and must be localised. The research study considered the perceptions of post-graduate students on the decolonization of social sciences modules from the Nelson Mandela University. The objectives of the study are as follows: to investigate the perception of post-graduate students based within the School of Social Sciences on the decolonization of the social sciences modules at the Nelson Mandela University at South campus. To come up with recommendations with the view of addressing some to the challenges faced by tertiary institutions on decolonization of the social sciences modules at the Nelson Mandela University. The geographical area of the university is Eastern Cape, Port Elizabeth, Summerstrand, and the study was done on the south campus of the Nelson Mandela University. This study attempts to shed some light on the decolonization and Africanization of the modules through the lenses of post-graduate students. Literature is utilized to get a broader understanding of the concept of decolonization. The study also suggests how the university curriculum can be Africanized so that it can be more inclusive to African students and more relevant to African students. Interviews with post-graduate students are used as guideline to get a better understanding of how the modules affect them and the solutions to their concerns emerging from colonized modules. , Thesis (MA) -- Faculty of Humanities, School of Governmental and Social Sciences, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Manduluka, Lubabalo
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54481 , vital:46603
- Description: This research project is motivated by the students 2015-2016 higher education student protest that called for the decolonization of higher education institutions. It is widely accepted that for university module to serve students properly, it should be relevant to students it should be and must be localised. The research study considered the perceptions of post-graduate students on the decolonization of social sciences modules from the Nelson Mandela University. The objectives of the study are as follows: to investigate the perception of post-graduate students based within the School of Social Sciences on the decolonization of the social sciences modules at the Nelson Mandela University at South campus. To come up with recommendations with the view of addressing some to the challenges faced by tertiary institutions on decolonization of the social sciences modules at the Nelson Mandela University. The geographical area of the university is Eastern Cape, Port Elizabeth, Summerstrand, and the study was done on the south campus of the Nelson Mandela University. This study attempts to shed some light on the decolonization and Africanization of the modules through the lenses of post-graduate students. Literature is utilized to get a broader understanding of the concept of decolonization. The study also suggests how the university curriculum can be Africanized so that it can be more inclusive to African students and more relevant to African students. Interviews with post-graduate students are used as guideline to get a better understanding of how the modules affect them and the solutions to their concerns emerging from colonized modules. , Thesis (MA) -- Faculty of Humanities, School of Governmental and Social Sciences, 2021
- Full Text:
- Date Issued: 2021-12
Perceptions of small-scale vegetable farmers on drought mitigation strategies in the Amathole District Municipality of the Eastern Cape Province
- Authors: Dingiswayo, Xolisile
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/53676 , vital:45686
- Description: The present study aimed to investigate perceptions of small-scale vegetable farmers on drought mitigation strategies in the Amathole District Municipality of the Eastern Cape Province. The research objective was to investigate what small-scale vegetable farmers’ perceptions and readiness are in terms of strategies to cope with drought conditions. The study was conducted within the Mbashe, Mnquma, Amahlathi and Great Kei local municipalities of the Eastern Cape. Primary data collection was conducted among 44 small-scale vegetable farmers of the Amathole municipal district. These are farmers who receive social support from the government, are registered with the Department of Rural Development and Agrarian Reform and contribute to the fight against food insecurity in the Amathole district. The primary data was also collected from 13 agricultural extension officers with high experience in advising small-scale farmers residing in the Amathole district. Data collection took place in various local municipalities under Amathole District Municipality, namely: Mbashe, Mnquma, Amahlathi and Great Kei. A multi-method approach was adopted in this study as an appropriate technique to create an improved quality of research which eliminates the deep-rooted bias to either qualitative or quantitative methods alone. A self-administered questionnaires with both closed and open-ended questions – one for the small-scale farmer survey and the second for the extension officer survey – was employed as data collection instrument. The demographic characteristics of small-scale vegetable farmers in the survey area indicated that the present majority of farmers are married male Xhosa farmers between the ages of 56 and 65 years old, with a secondary level of education. The majority of the farmers are typically resource-poor − which implies that the added menace of drought poses the risk that small-scale vegetable farming could decline to mere subsistence level or worse. Drought was found to be a major problem in Mbashe, Mnquma, Amahlathi and Great Kei local municipalities within the Amathole municipal district, with an acute impact on farmers’ production and generation of income. From the data, it emerged that farmers are not sufficiently informed about and do not receive specific training in drought mitigation strategies. Farmers rely on drought alleviation methods but there is a lack of adaptive strategies and timely, long-term ii state intervention. Being resource-poor, these small-scale producers are reliant on natural resources – notably water for irrigating crops. The study established further that there is neither the resources nor sufficient training by and involvement of the extension service. Farmers therefore rely on the use of drought coping mechanisms and drought mitigation techniques and on adapting their production systems. The information-sharing sessions recommended can assist in improving rural livelihoods and the productivity of small-scale vegetable farmers. The absence of engagement of youth in farming means that modern conservation and innovative farming techniques and systems are not implemented towards reducing the impacts of climate change − as well as revitalizing rural areas such Amathole. Access to education about drought, improved drought coping mechanisms and adaptive strategies should be created to facilitate an exchange of traditional and modern agricultural information. The development of infrastructure in rural communities and farming areas is another factor crucial to improving farming systems and operations in the Amathole municipal district. , Thesis (MSc) -- Faculty of Science, School of Natural Resource Management, 2021
- Full Text: false
- Date Issued: 2021-12
- Authors: Dingiswayo, Xolisile
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/53676 , vital:45686
- Description: The present study aimed to investigate perceptions of small-scale vegetable farmers on drought mitigation strategies in the Amathole District Municipality of the Eastern Cape Province. The research objective was to investigate what small-scale vegetable farmers’ perceptions and readiness are in terms of strategies to cope with drought conditions. The study was conducted within the Mbashe, Mnquma, Amahlathi and Great Kei local municipalities of the Eastern Cape. Primary data collection was conducted among 44 small-scale vegetable farmers of the Amathole municipal district. These are farmers who receive social support from the government, are registered with the Department of Rural Development and Agrarian Reform and contribute to the fight against food insecurity in the Amathole district. The primary data was also collected from 13 agricultural extension officers with high experience in advising small-scale farmers residing in the Amathole district. Data collection took place in various local municipalities under Amathole District Municipality, namely: Mbashe, Mnquma, Amahlathi and Great Kei. A multi-method approach was adopted in this study as an appropriate technique to create an improved quality of research which eliminates the deep-rooted bias to either qualitative or quantitative methods alone. A self-administered questionnaires with both closed and open-ended questions – one for the small-scale farmer survey and the second for the extension officer survey – was employed as data collection instrument. The demographic characteristics of small-scale vegetable farmers in the survey area indicated that the present majority of farmers are married male Xhosa farmers between the ages of 56 and 65 years old, with a secondary level of education. The majority of the farmers are typically resource-poor − which implies that the added menace of drought poses the risk that small-scale vegetable farming could decline to mere subsistence level or worse. Drought was found to be a major problem in Mbashe, Mnquma, Amahlathi and Great Kei local municipalities within the Amathole municipal district, with an acute impact on farmers’ production and generation of income. From the data, it emerged that farmers are not sufficiently informed about and do not receive specific training in drought mitigation strategies. Farmers rely on drought alleviation methods but there is a lack of adaptive strategies and timely, long-term ii state intervention. Being resource-poor, these small-scale producers are reliant on natural resources – notably water for irrigating crops. The study established further that there is neither the resources nor sufficient training by and involvement of the extension service. Farmers therefore rely on the use of drought coping mechanisms and drought mitigation techniques and on adapting their production systems. The information-sharing sessions recommended can assist in improving rural livelihoods and the productivity of small-scale vegetable farmers. The absence of engagement of youth in farming means that modern conservation and innovative farming techniques and systems are not implemented towards reducing the impacts of climate change − as well as revitalizing rural areas such Amathole. Access to education about drought, improved drought coping mechanisms and adaptive strategies should be created to facilitate an exchange of traditional and modern agricultural information. The development of infrastructure in rural communities and farming areas is another factor crucial to improving farming systems and operations in the Amathole municipal district. , Thesis (MSc) -- Faculty of Science, School of Natural Resource Management, 2021
- Full Text: false
- Date Issued: 2021-12
Plastic particle characterization and concentrations found in the river and marine water environment of Algoa Bay, South Africa
- Authors: Moss, Kerry-Leigh
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/53874 , vital:46025
- Description: Only 12% of the world's published plastic research includes references to Africa despite it being a significant contributor to the global plastic waste and mismanagement problem (~88.5% of Africa's plastic waste is mismanaged). Ocean plastics are transported from land by rivers to the sea. However, source contextualization is complex. Many African rivers predominantly run alongside human settlements that host informal waste dumpsites. In this study a simple cost effective, easily deployed, consistent and replicable survey methodology was employed. The study quantified macro plastic in three rivers discharging into Algoa Bay, South Africa. The results indicated that industrial Swartkops and metropolitan Baakens Rivers both illustrate moderate plastic pollution (>3000 plastic particles/day), with the relatively natural Sundays River to showing minimal evidence of river macroplastic (<100 plastic particles/day). The types of plastic were noted using the RIMMEL app (premier African implementation), enabling proportional comparison of different plastic litter types to be completed. , Thesis (MSc) -- Faculty of Science, Oceanography Department,2021
- Full Text:
- Date Issued: 2021-12
- Authors: Moss, Kerry-Leigh
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/53874 , vital:46025
- Description: Only 12% of the world's published plastic research includes references to Africa despite it being a significant contributor to the global plastic waste and mismanagement problem (~88.5% of Africa's plastic waste is mismanaged). Ocean plastics are transported from land by rivers to the sea. However, source contextualization is complex. Many African rivers predominantly run alongside human settlements that host informal waste dumpsites. In this study a simple cost effective, easily deployed, consistent and replicable survey methodology was employed. The study quantified macro plastic in three rivers discharging into Algoa Bay, South Africa. The results indicated that industrial Swartkops and metropolitan Baakens Rivers both illustrate moderate plastic pollution (>3000 plastic particles/day), with the relatively natural Sundays River to showing minimal evidence of river macroplastic (<100 plastic particles/day). The types of plastic were noted using the RIMMEL app (premier African implementation), enabling proportional comparison of different plastic litter types to be completed. , Thesis (MSc) -- Faculty of Science, Oceanography Department,2021
- Full Text:
- Date Issued: 2021-12
Plastic particle characterization and concentrations found in the river and marine water environment of Algoa Bay, South Africa
- Authors: Moss, Kerry-Leigh
- Date: 2021-12
- Subjects: Marine pollution , Plastic marine debris --Environmental aspects , Algoa Bay -- Eastern Cape
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/55645 , vital:53403
- Description: With just 4% of published plastic pollution research, the African region remains one of the most poorly 221 understood areas, leaving a large knowledge gap in our understanding of this global pollution problem 222 (Hurley, Woodward, & Rothwell, 2018). It is estimated that 64 to 90% of the ocean’s plastics originate 223 from fluxes in the terrestrial environment, however determining the exact source is not a simple task 224 (Andrady, 2011; Hurley et al., 2018). Plastic items, including the biodegradable plastic items, 225 breakdown in the marine environment through mechanical action resulting in non-degradable 226 microscopic fragments of synthetic polymers (Thompson et al., 2004). However, the consequences of 227 these microplastic fragments.This research intends to address two aims; first, to provide an estimation of the quantity of plastic 235 transportation via African rivers to the greater body of knowledge of global plastic emissions. This aim 236 will specifically focus on determining plastic output via Port Elizabeth rivers into the Algoa Bay marine 237 environment. The second aim of this research is to quantify and characterize the amount of microplastic 238 in the marine environment of Algoa Bay. The second aim will focus on identifying microplastic (MP) 239 throughout the water column. 240 This research consists of six objectives; first, to identify, design and field test a cost-effective system for 241 monitoring macroplastic quantity output from riverine to marine environments. Second, to contribute to 242 the body of knowledge of African river plastic pollution through quantification and characterisation of 243 macroplastics in the Port Elizabeth rivers. Third, to compare three very different rivers with different 244 levels of urbanisation (industrial, urban, and remote) to ascertain the impact of population and 245 government pollution management protocols on plastic emissions. Fourth, to measure microplastic 246 quantities at three depths from eight locations across the marine environment of Algoa Bay. Fifth, quantitatively characterize the microplastics in Algoa Bay to highlight any patterns of distribution. Sixth, 248 to compare the Algoa Bay concentrations with published international marine microplastic findings. , Thesis (MSc) -- Faculty of Science, Ocean Science, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Moss, Kerry-Leigh
- Date: 2021-12
- Subjects: Marine pollution , Plastic marine debris --Environmental aspects , Algoa Bay -- Eastern Cape
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/55645 , vital:53403
- Description: With just 4% of published plastic pollution research, the African region remains one of the most poorly 221 understood areas, leaving a large knowledge gap in our understanding of this global pollution problem 222 (Hurley, Woodward, & Rothwell, 2018). It is estimated that 64 to 90% of the ocean’s plastics originate 223 from fluxes in the terrestrial environment, however determining the exact source is not a simple task 224 (Andrady, 2011; Hurley et al., 2018). Plastic items, including the biodegradable plastic items, 225 breakdown in the marine environment through mechanical action resulting in non-degradable 226 microscopic fragments of synthetic polymers (Thompson et al., 2004). However, the consequences of 227 these microplastic fragments.This research intends to address two aims; first, to provide an estimation of the quantity of plastic 235 transportation via African rivers to the greater body of knowledge of global plastic emissions. This aim 236 will specifically focus on determining plastic output via Port Elizabeth rivers into the Algoa Bay marine 237 environment. The second aim of this research is to quantify and characterize the amount of microplastic 238 in the marine environment of Algoa Bay. The second aim will focus on identifying microplastic (MP) 239 throughout the water column. 240 This research consists of six objectives; first, to identify, design and field test a cost-effective system for 241 monitoring macroplastic quantity output from riverine to marine environments. Second, to contribute to 242 the body of knowledge of African river plastic pollution through quantification and characterisation of 243 macroplastics in the Port Elizabeth rivers. Third, to compare three very different rivers with different 244 levels of urbanisation (industrial, urban, and remote) to ascertain the impact of population and 245 government pollution management protocols on plastic emissions. Fourth, to measure microplastic 246 quantities at three depths from eight locations across the marine environment of Algoa Bay. Fifth, quantitatively characterize the microplastics in Algoa Bay to highlight any patterns of distribution. Sixth, 248 to compare the Algoa Bay concentrations with published international marine microplastic findings. , Thesis (MSc) -- Faculty of Science, Ocean Science, 2021
- Full Text:
- Date Issued: 2021-12
Possible futures for South Africa’s transition to a low carbon economy towards 2050
- Authors: Myeki, Pumla Qamisa
- Date: 2021-12
- Subjects: Environmental economics -- South Africa , Carbon dioxide mitigation -- Economic aspects -- South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/54969 , vital:48523
- Description: South Africa together with the rest of the world have been caught up in a new policy wave of developing policies that support the move towards sustainable, low-carbon and climate-resilient economies underpinned by the desire to reduce greenhouse gas (GHG) emissions as per declared Intended Nationally Determined Contributions (INDCs). However, South Africa’s economic development model is still characterised by a coal-based energy structure, which imposes a significant stress on its natural resources and environment, due to vast quantities of GHG emissions into the atmosphere. Currently, in South Africa there is no sign of any coherent plan for achieving the socio-technological change that the transition to a low carbon economy vision implies. The existing policies, strategies and plans are not yet fully aligned with the low carbon transition agenda as they were developed prior to the United Nations Framework Convention on Climate Change (UNFCCC) Paris Agreement call. There has been minimal or no noticeable change in South Africa’s carbon-dependence, which may further lead to market failure effects. The existing policy and regulatory framework for low carbon economy (LCE) transition is perceived complimentary; but is defined by short-term, overarching and vague policies that lack forward thinking far-sighted element of framing the desired future. To tackle the short-termism of South African LCE policy, the study commissioned a mixed-method, futures research approach in order to facilitate a kind of forward thinking required for integrated manoeuvres and long-term vision of different alternating choices with a cognisance of their respective repercussions. The primary research objective of this study was to develop and illustrate possible scenarios for South Africa’s low-carbon economy transition futures over the next 30 years, taking into consideration numerous uncertainties about the future structure of South Africa’s economy, costs of the transition as well as potential technological breakthroughs that could emerge. This objective was achieved with the ultimate description of possible futures - Ses’fikile, Stimela, Inqanawa and Siyaya phambili, and the identification of Ses’fikile as the desired future state; as outlined by the Integrated Vision for South Africa’s transition to an inclusive, competitive, climate-resilient and low carbon economy future. Further, the secondary objectives outlined in Chapter 1 and 2 of this research study were realised through an all-encompassing literature review, political economy and political, economic, social, technological, environmental, legal (PESTEL) analysis, the Real-Time Delphi exercise as well as scenario planning methodology. This research study extracts intuitions from academic, policy planning and futures research in order to discover the prevailing frontiers in the progression of both the theoretical and real-world requirements considered as essential for fundamental economic transformation to a low-carbon future. Extensive contribution of this study included; - Closing the literature gaps that exist in terms of gaining a deeper understanding into insights on the potential drivers, impacts and global trends in the low-carbon economy transition space. Pushing forward a narrative within and between the economic development, policy decision-making and environment about how to visualise and plan for a decarbonized future economy for South Africa. Futures research approach afforded this research study an opportunity to engage with the uncertainties of the low-carbon economy future, while engaging with emerging issues, trends and weak signals that are transforming South Africa’s social horizons. Policy decision-makers were afforded a chance to improve their policy making while addressing the dynamic nature of implications of the current economic development trajectories, alternative future possibilities as well as transitioning to a preferred low-carbon future. In conclusion, contributions made by low-carbon experts who participated in this study provided bigger picture insights for policy decision makers and can provide timely interventions while deliberating about South Africa’s low-carbon future. Finally, conclusions drawn and recommendations made would assist in the stimulation of discussions for further policy research. Key concepts: Low carbon economy, decarbonisation, futures research, climate-resilient, scenario planning, Real-Time Delphi. , Thesis (DBA) -- Faculty of Business and Economic Sciences, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Myeki, Pumla Qamisa
- Date: 2021-12
- Subjects: Environmental economics -- South Africa , Carbon dioxide mitigation -- Economic aspects -- South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/54969 , vital:48523
- Description: South Africa together with the rest of the world have been caught up in a new policy wave of developing policies that support the move towards sustainable, low-carbon and climate-resilient economies underpinned by the desire to reduce greenhouse gas (GHG) emissions as per declared Intended Nationally Determined Contributions (INDCs). However, South Africa’s economic development model is still characterised by a coal-based energy structure, which imposes a significant stress on its natural resources and environment, due to vast quantities of GHG emissions into the atmosphere. Currently, in South Africa there is no sign of any coherent plan for achieving the socio-technological change that the transition to a low carbon economy vision implies. The existing policies, strategies and plans are not yet fully aligned with the low carbon transition agenda as they were developed prior to the United Nations Framework Convention on Climate Change (UNFCCC) Paris Agreement call. There has been minimal or no noticeable change in South Africa’s carbon-dependence, which may further lead to market failure effects. The existing policy and regulatory framework for low carbon economy (LCE) transition is perceived complimentary; but is defined by short-term, overarching and vague policies that lack forward thinking far-sighted element of framing the desired future. To tackle the short-termism of South African LCE policy, the study commissioned a mixed-method, futures research approach in order to facilitate a kind of forward thinking required for integrated manoeuvres and long-term vision of different alternating choices with a cognisance of their respective repercussions. The primary research objective of this study was to develop and illustrate possible scenarios for South Africa’s low-carbon economy transition futures over the next 30 years, taking into consideration numerous uncertainties about the future structure of South Africa’s economy, costs of the transition as well as potential technological breakthroughs that could emerge. This objective was achieved with the ultimate description of possible futures - Ses’fikile, Stimela, Inqanawa and Siyaya phambili, and the identification of Ses’fikile as the desired future state; as outlined by the Integrated Vision for South Africa’s transition to an inclusive, competitive, climate-resilient and low carbon economy future. Further, the secondary objectives outlined in Chapter 1 and 2 of this research study were realised through an all-encompassing literature review, political economy and political, economic, social, technological, environmental, legal (PESTEL) analysis, the Real-Time Delphi exercise as well as scenario planning methodology. This research study extracts intuitions from academic, policy planning and futures research in order to discover the prevailing frontiers in the progression of both the theoretical and real-world requirements considered as essential for fundamental economic transformation to a low-carbon future. Extensive contribution of this study included; - Closing the literature gaps that exist in terms of gaining a deeper understanding into insights on the potential drivers, impacts and global trends in the low-carbon economy transition space. Pushing forward a narrative within and between the economic development, policy decision-making and environment about how to visualise and plan for a decarbonized future economy for South Africa. Futures research approach afforded this research study an opportunity to engage with the uncertainties of the low-carbon economy future, while engaging with emerging issues, trends and weak signals that are transforming South Africa’s social horizons. Policy decision-makers were afforded a chance to improve their policy making while addressing the dynamic nature of implications of the current economic development trajectories, alternative future possibilities as well as transitioning to a preferred low-carbon future. In conclusion, contributions made by low-carbon experts who participated in this study provided bigger picture insights for policy decision makers and can provide timely interventions while deliberating about South Africa’s low-carbon future. Finally, conclusions drawn and recommendations made would assist in the stimulation of discussions for further policy research. Key concepts: Low carbon economy, decarbonisation, futures research, climate-resilient, scenario planning, Real-Time Delphi. , Thesis (DBA) -- Faculty of Business and Economic Sciences, 2021
- Full Text:
- Date Issued: 2021-12
Post-apartheid geographies of studentification at Nelson Mandela University, Port Elizabeth, South Africa
- Authors: Mzileni, Pedro Mihlali
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/53758 , vital:45759
- Description: This study takes the concept of studentification from its British conception to the post-apartheid African city, Port Elizabeth (Gqeberha), where the Nelson Mandela University is situated. Studentification refers to the mass arrival of students in university cities and towns and the economic, infrastructural, geographic and sociopolitical changes that the settlements of these students make overtime to such cities and towns. For the case of Nelson Mandela University in Port Elizabeth, this study identified four major areas that are engulfed by studentification and sought to understand how this phenomenon takes shape in them. The study extends the existing terms and languages used to comprehend studentification by introducing a viewpoint of how it emerges in an African post-apartheid city. This is a city that has deindustrialised and has also experienced a capital flight out of its city centre since the 1970s. These declining economic indicators over decades have left the city to decay and experience high rates of unemployment, poverty and housing displacements. But, the post-1994 massification of the South African higher education system introduced new micro-economies for the city mainly through the emergence of student accommodation as a thriving business opportunity in the city in light of increased university enrolments. However, the economic injection brought by student accommodation in this city that has been deindustrialising remains minimal in having the necessary power to turnaround the city’s fortunes and transform the urban space towards a developmental path. This socioeconomic problem is also compounded by the presence of a weak arm of the state (particularly local government) that is unable to play an active role in driving capital flows to deliver tangible urban development. As a result, the university emerges as one of the active public actors in the renewal efforts of the city even though this is not its primary mandate. Thus, the process of studentification in this case takes place in a context defined by a declining higher education political economy and a weak city planning regime. As a result, these factors leave studentification to be vulnerable to being impacted by old colonial-apartheid structures of the city and the economic shortfalls of post-apartheid urban South Africa that have produced a precarious urban space where the private property market and the illicit economy have a stronger hand in determining the power relations that emerge in the city space. Studentification in this African city is expressed in four major geographies: (1) the Summerstrand suburb that is nearest to the University’s main urban campuses, (2) the Central CBD that has experienced capital flight and currently has tall buildings that are former offices of apartheid commerce which have been converted to student accommodation, (3) the deindustrialised and abandoned manufacturing sites at the North End margins of the city which have also been converted to student accommodation, and (4) the Zwide township, an underprivileged black community that is close to the former black Missionvale campus of the University – this is the furthest student accommodation area in the city. The study examines these student communities that emerge out of these four identified areas of the urban space and it also underscores the genre of the political, social, and economic relations of each of these four geographies and their interconnectedness. The study found that the South African post-apartheid city is characterised by an urban model and a university campus design that is a structural outcome of colonisation, apartheid spatial planning, and racial capitalism that still has continuing legacies today. As a result, these four geographies of studentification in the city are historical, racial and economic outcomes of urban power relations that originate from colonialism. Key defining features of studentification in each of these four areas were identified and analysed to illustrate that the South African account of studentification resembles the city’s apartheid legacy and these untransformed urban structures get further compounded by the country’s underfunded higher education massification strategy, its declining economic indicators and a weak state that has ‘soft’ planning and governance systems that are unable to decisively impact the trajectory of socioeconomic development in this university city. These intersecting forces translate into precarious day-to-day student life experiences and structural complications for the governance of the University and the city. These socioeconomic misfortunes also handicap the potential of the city to renew through a studentification economy. Henri Lefebvre’s Production of Space Theory was utilised to frame the study. Methodologically, the study utilised qualitative narrative interviews and document interpretation. This is the first doctoral thesis written about the concept of studentification in South Africa. , Thesis (PhD) -- Faculty of Humanities, The Department of Sociology and Anthropology, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Mzileni, Pedro Mihlali
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/53758 , vital:45759
- Description: This study takes the concept of studentification from its British conception to the post-apartheid African city, Port Elizabeth (Gqeberha), where the Nelson Mandela University is situated. Studentification refers to the mass arrival of students in university cities and towns and the economic, infrastructural, geographic and sociopolitical changes that the settlements of these students make overtime to such cities and towns. For the case of Nelson Mandela University in Port Elizabeth, this study identified four major areas that are engulfed by studentification and sought to understand how this phenomenon takes shape in them. The study extends the existing terms and languages used to comprehend studentification by introducing a viewpoint of how it emerges in an African post-apartheid city. This is a city that has deindustrialised and has also experienced a capital flight out of its city centre since the 1970s. These declining economic indicators over decades have left the city to decay and experience high rates of unemployment, poverty and housing displacements. But, the post-1994 massification of the South African higher education system introduced new micro-economies for the city mainly through the emergence of student accommodation as a thriving business opportunity in the city in light of increased university enrolments. However, the economic injection brought by student accommodation in this city that has been deindustrialising remains minimal in having the necessary power to turnaround the city’s fortunes and transform the urban space towards a developmental path. This socioeconomic problem is also compounded by the presence of a weak arm of the state (particularly local government) that is unable to play an active role in driving capital flows to deliver tangible urban development. As a result, the university emerges as one of the active public actors in the renewal efforts of the city even though this is not its primary mandate. Thus, the process of studentification in this case takes place in a context defined by a declining higher education political economy and a weak city planning regime. As a result, these factors leave studentification to be vulnerable to being impacted by old colonial-apartheid structures of the city and the economic shortfalls of post-apartheid urban South Africa that have produced a precarious urban space where the private property market and the illicit economy have a stronger hand in determining the power relations that emerge in the city space. Studentification in this African city is expressed in four major geographies: (1) the Summerstrand suburb that is nearest to the University’s main urban campuses, (2) the Central CBD that has experienced capital flight and currently has tall buildings that are former offices of apartheid commerce which have been converted to student accommodation, (3) the deindustrialised and abandoned manufacturing sites at the North End margins of the city which have also been converted to student accommodation, and (4) the Zwide township, an underprivileged black community that is close to the former black Missionvale campus of the University – this is the furthest student accommodation area in the city. The study examines these student communities that emerge out of these four identified areas of the urban space and it also underscores the genre of the political, social, and economic relations of each of these four geographies and their interconnectedness. The study found that the South African post-apartheid city is characterised by an urban model and a university campus design that is a structural outcome of colonisation, apartheid spatial planning, and racial capitalism that still has continuing legacies today. As a result, these four geographies of studentification in the city are historical, racial and economic outcomes of urban power relations that originate from colonialism. Key defining features of studentification in each of these four areas were identified and analysed to illustrate that the South African account of studentification resembles the city’s apartheid legacy and these untransformed urban structures get further compounded by the country’s underfunded higher education massification strategy, its declining economic indicators and a weak state that has ‘soft’ planning and governance systems that are unable to decisively impact the trajectory of socioeconomic development in this university city. These intersecting forces translate into precarious day-to-day student life experiences and structural complications for the governance of the University and the city. These socioeconomic misfortunes also handicap the potential of the city to renew through a studentification economy. Henri Lefebvre’s Production of Space Theory was utilised to frame the study. Methodologically, the study utilised qualitative narrative interviews and document interpretation. This is the first doctoral thesis written about the concept of studentification in South Africa. , Thesis (PhD) -- Faculty of Humanities, The Department of Sociology and Anthropology, 2021
- Full Text:
- Date Issued: 2021-12