The impact of unguided animal husbandry on the peripheral and landscape elements: the case of Alice
- Chungag, Anye https://orcid.org/0000-0002-2308-9410
- Authors: Chungag, Anye https://orcid.org/0000-0002-2308-9410
- Date: 2015
- Subjects: Livestock , Animal culture , Animal culture -- South Africa -- Eastern Cape
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/19511 , vital:43134
- Description: This study is based on Unguided Animal Husbandry as practiced in the town of Alice and its surrounding locations. It underscores the fact that though cattle are domesticated animals, they are still migratory in character. Their migratory tendency is prompted by the need of food and water and sometimes convenient rest positions. The search for food, water and rest may lead cattle to travel for many kilometres away from enclosure. This movement allows them to establish eating and drinking preferences and locations which become habitual, hence tracks develop along these paths which greatly compromise the soil, water and vegetation quality of the landscape. This study identifies such tracks and investigates the impact of cattle movement on soil physical properties and vegetation characteristics. However all this is against the back drop of the open access land regime; a mode of exploiting common property to which all have equal rights. It is a system of land management that comes with inherent challenges. Amongst them a selfish inclination of taking decisions that is motivated by egoistic interests and utmost personal gain. Secondly no thought is given to management and sustainability, subjecting common property to Haddins (1968) philosophy ‘The tragedy of the commons’. The results of the study show that when cattle is left to free range in common property they establish feeding, drinking and rest habits that have greater negative consequences on ecosystem elements of soil, vegetation and water than the positive effects they bring. The open access regime under which this farming system operates is appraised and recommendations proposed for its amelioration. , Thesis (MPhil) (Environmental Studies) -- University of Fort Hare, 2015
- Full Text:
- Date Issued: 2015
- Authors: Chungag, Anye https://orcid.org/0000-0002-2308-9410
- Date: 2015
- Subjects: Livestock , Animal culture , Animal culture -- South Africa -- Eastern Cape
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/19511 , vital:43134
- Description: This study is based on Unguided Animal Husbandry as practiced in the town of Alice and its surrounding locations. It underscores the fact that though cattle are domesticated animals, they are still migratory in character. Their migratory tendency is prompted by the need of food and water and sometimes convenient rest positions. The search for food, water and rest may lead cattle to travel for many kilometres away from enclosure. This movement allows them to establish eating and drinking preferences and locations which become habitual, hence tracks develop along these paths which greatly compromise the soil, water and vegetation quality of the landscape. This study identifies such tracks and investigates the impact of cattle movement on soil physical properties and vegetation characteristics. However all this is against the back drop of the open access land regime; a mode of exploiting common property to which all have equal rights. It is a system of land management that comes with inherent challenges. Amongst them a selfish inclination of taking decisions that is motivated by egoistic interests and utmost personal gain. Secondly no thought is given to management and sustainability, subjecting common property to Haddins (1968) philosophy ‘The tragedy of the commons’. The results of the study show that when cattle is left to free range in common property they establish feeding, drinking and rest habits that have greater negative consequences on ecosystem elements of soil, vegetation and water than the positive effects they bring. The open access regime under which this farming system operates is appraised and recommendations proposed for its amelioration. , Thesis (MPhil) (Environmental Studies) -- University of Fort Hare, 2015
- Full Text:
- Date Issued: 2015
The implications of smallholder agricultural productivity growth for poverty alleviation in post-apartheid South Africa
- Authors: Dwesini, Nontembiso Eugenia
- Date: 2015
- Subjects: Agriculture -- Economic aspects -- South Africa , Agricultural assistance -- South Africa , Sustainable development -- South Africa , Agricultural productivity -- South Africa
- Language: English
- Type: Thesis , Masters , MSc Agric (Agricultural Economics)
- Identifier: vital:11232 , http://hdl.handle.net/10353/d1021286 , Agriculture -- Economic aspects -- South Africa , Agricultural assistance -- South Africa , Sustainable development -- South Africa , Agricultural productivity -- South Africa
- Description: The adoption of the Millennium Development Goal 1(MDG 1) of reducing the rate of poverty to half of the 1990-level by 2015 has been a challenge faced by the developing countries including South Africa. The foundations of democracy have to be continuously assessed so that the obstacles faced by South Africa as it strives towards sustainable democracy are addressed. With agricultural sector identified as having the potential to alleviate poverty compared to the mining sector, manufacturing sector and services sector, it faced the challenges that include: (i) accelerating agricultural productivity; (ii) reducing poverty and vulnerability; and (iii) narrowing rural-urban income disparities. The identification of the critical linkages in the agricultural development framework allows for effective strategic planning, effective decision making and appropriate policy formulation. Expectedly, the sector has attracted considerable fiscal policy interest and public investments. The primary aim of this research study is to assess the extent to which smallholder agricultural productivity growth alleviates poverty in South Africa. The statistical and econometric techniques namely; Johansen technique of co-integration analysis (1995), analysis of covariance and correlation, Vector Error Correction Model, are employed in this research study. The data description, data sources, expected relationship between variables and indexation of data are done. The drivers and cause-effect relationships between agriculture and poverty reduction are investigated. The employed models allowed for an exploration of plausible future growth in agricultural elasticity of poverty and the possibility of reducing poverty level in South Africa. The data is obtained from the National Department of Agriculture from 1994 -2013. The analysis of the results strongly confirms that agricultural productivity has a significant inverse relationship to the levels of poverty in South Africa. The outcome of the analysis will contribute to improved decision making on the use of public funds in agriculture.
- Full Text:
- Date Issued: 2015
- Authors: Dwesini, Nontembiso Eugenia
- Date: 2015
- Subjects: Agriculture -- Economic aspects -- South Africa , Agricultural assistance -- South Africa , Sustainable development -- South Africa , Agricultural productivity -- South Africa
- Language: English
- Type: Thesis , Masters , MSc Agric (Agricultural Economics)
- Identifier: vital:11232 , http://hdl.handle.net/10353/d1021286 , Agriculture -- Economic aspects -- South Africa , Agricultural assistance -- South Africa , Sustainable development -- South Africa , Agricultural productivity -- South Africa
- Description: The adoption of the Millennium Development Goal 1(MDG 1) of reducing the rate of poverty to half of the 1990-level by 2015 has been a challenge faced by the developing countries including South Africa. The foundations of democracy have to be continuously assessed so that the obstacles faced by South Africa as it strives towards sustainable democracy are addressed. With agricultural sector identified as having the potential to alleviate poverty compared to the mining sector, manufacturing sector and services sector, it faced the challenges that include: (i) accelerating agricultural productivity; (ii) reducing poverty and vulnerability; and (iii) narrowing rural-urban income disparities. The identification of the critical linkages in the agricultural development framework allows for effective strategic planning, effective decision making and appropriate policy formulation. Expectedly, the sector has attracted considerable fiscal policy interest and public investments. The primary aim of this research study is to assess the extent to which smallholder agricultural productivity growth alleviates poverty in South Africa. The statistical and econometric techniques namely; Johansen technique of co-integration analysis (1995), analysis of covariance and correlation, Vector Error Correction Model, are employed in this research study. The data description, data sources, expected relationship between variables and indexation of data are done. The drivers and cause-effect relationships between agriculture and poverty reduction are investigated. The employed models allowed for an exploration of plausible future growth in agricultural elasticity of poverty and the possibility of reducing poverty level in South Africa. The data is obtained from the National Department of Agriculture from 1994 -2013. The analysis of the results strongly confirms that agricultural productivity has a significant inverse relationship to the levels of poverty in South Africa. The outcome of the analysis will contribute to improved decision making on the use of public funds in agriculture.
- Full Text:
- Date Issued: 2015
The importance of Banting research and why withholding it costs us lives:
- Remsing, Sandra, Viljoen, Janet, Christie, Candice J
- Authors: Remsing, Sandra , Viljoen, Janet , Christie, Candice J
- Date: 2015
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/143672 , vital:38272 , https://ischp.files.wordpress.com/2015/08/ischp_2015_abstract_booklet.pdf
- Description: Increased attention is being paid to the low-carbohydrate, high-fat diet, (LCHF) or ‘Banting diet’, as an effective method of managing insulin resistance and type ll diabetes. Randomised controlled trials have shown benefit, and anecdotes support the need for further investigation. Considering the prevalence and severity of type ll diabetes, effective non-pharmaceutical treatment options, such as LCHF, are crucial. However, current guidelines do not include the LCHF lifestyle, and in fact this option is generally opposed by the medical profession. Given the evidence, ignoring an alternative treatment must be considered an injustice to patients. This paper will present the opposing theories for the lifestyle treatment of type II diabetes, in particular, and critically argue that medical and scientific opposition to research into and application of an alternative treatment for insulin resistant individuals may be harmful rather than helpful.
- Full Text:
- Date Issued: 2015
- Authors: Remsing, Sandra , Viljoen, Janet , Christie, Candice J
- Date: 2015
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/143672 , vital:38272 , https://ischp.files.wordpress.com/2015/08/ischp_2015_abstract_booklet.pdf
- Description: Increased attention is being paid to the low-carbohydrate, high-fat diet, (LCHF) or ‘Banting diet’, as an effective method of managing insulin resistance and type ll diabetes. Randomised controlled trials have shown benefit, and anecdotes support the need for further investigation. Considering the prevalence and severity of type ll diabetes, effective non-pharmaceutical treatment options, such as LCHF, are crucial. However, current guidelines do not include the LCHF lifestyle, and in fact this option is generally opposed by the medical profession. Given the evidence, ignoring an alternative treatment must be considered an injustice to patients. This paper will present the opposing theories for the lifestyle treatment of type II diabetes, in particular, and critically argue that medical and scientific opposition to research into and application of an alternative treatment for insulin resistant individuals may be harmful rather than helpful.
- Full Text:
- Date Issued: 2015
The importance of demographic trends in forecasting energy demand for private households in South africa
- Authors: Thubeni,Sinethemba Morine
- Date: 2015
- Subjects: Electric power consumption -- South Africa -- Forecasting Households -- South Africa , Demography -- Economic aspects -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/45322 , vital:38570
- Description: South Africa’s residential energy use is expected to grow at approximately the same rate as the population. Efficient planning for energy demand by energy suppliers is therefore, essential since shortage of energy will negatively affect economic growth.This paper aims to investigate the causal relationship between population and house-hold energy demand on coal, gas, paraffin and wood for private households in South Africa. The adjusted R2, AIC (Akaike information criterion), the BIC (Bayesian information criterion) and standard deviation of residuals were used to investigate which model is the best to predict energy demand in each province using all available information. The results show that population and household energy demand are associated with each other. The findings imply that the causality between population growth and household energy demand is bidirectional in most cases.
- Full Text:
- Date Issued: 2015
- Authors: Thubeni,Sinethemba Morine
- Date: 2015
- Subjects: Electric power consumption -- South Africa -- Forecasting Households -- South Africa , Demography -- Economic aspects -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/45322 , vital:38570
- Description: South Africa’s residential energy use is expected to grow at approximately the same rate as the population. Efficient planning for energy demand by energy suppliers is therefore, essential since shortage of energy will negatively affect economic growth.This paper aims to investigate the causal relationship between population and house-hold energy demand on coal, gas, paraffin and wood for private households in South Africa. The adjusted R2, AIC (Akaike information criterion), the BIC (Bayesian information criterion) and standard deviation of residuals were used to investigate which model is the best to predict energy demand in each province using all available information. The results show that population and household energy demand are associated with each other. The findings imply that the causality between population growth and household energy demand is bidirectional in most cases.
- Full Text:
- Date Issued: 2015
The Influence of Adaptive Co-management Interrelations on the Social Learning, Change and Transformation of the Pugu and Kazimzumbwi Community in Tanzania
- Authors: Ferdinand, Victoria
- Date: 2015
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/387311 , vital:68224 , xlink:href="https://www.ajol.info/index.php/sajee/article/view/137668"
- Description: This study sought to identify signs of social learning, change and transformation resulting from adaptive co-management interrelations in terms of the project ‘Reduction of Emission from Deforestation and Forest Degradation’ (REDD) at the Pugu and Kazimzumbwi Forest Reserves (PKFR) community in Tanzania. The study therefore presents some enablers and constraints in respect of learning, agency formation, social change and transformation potentially influenced by the REDD. This is a qualitative case study that explored ‘learning’1 from living experiences of local people at the PKFR and from local mechanisms of the REDD project. Reflexive workshop interventions were used to validate the performance of local REDD practices against the adaptive co-management framework. Other data was obtained through interviews, focus-group discussion, the analysis of documents and direct observations. The study found that individual people may deepen their understanding of forestry issues through collaborative interrelations. Social learning in the PKFR community was potentially stimulated by people’s relational interactions, reflective thinking and anticipations, and questioning of past practices. Learning occurred subtly, and the learning process was not endured firmly enough to foster the complex learning dynamics necessary for transformational changes. As a result, most of the REDD-stimulated learning did not transform the practices desired in the project.
- Full Text:
- Date Issued: 2015
- Authors: Ferdinand, Victoria
- Date: 2015
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/387311 , vital:68224 , xlink:href="https://www.ajol.info/index.php/sajee/article/view/137668"
- Description: This study sought to identify signs of social learning, change and transformation resulting from adaptive co-management interrelations in terms of the project ‘Reduction of Emission from Deforestation and Forest Degradation’ (REDD) at the Pugu and Kazimzumbwi Forest Reserves (PKFR) community in Tanzania. The study therefore presents some enablers and constraints in respect of learning, agency formation, social change and transformation potentially influenced by the REDD. This is a qualitative case study that explored ‘learning’1 from living experiences of local people at the PKFR and from local mechanisms of the REDD project. Reflexive workshop interventions were used to validate the performance of local REDD practices against the adaptive co-management framework. Other data was obtained through interviews, focus-group discussion, the analysis of documents and direct observations. The study found that individual people may deepen their understanding of forestry issues through collaborative interrelations. Social learning in the PKFR community was potentially stimulated by people’s relational interactions, reflective thinking and anticipations, and questioning of past practices. Learning occurred subtly, and the learning process was not endured firmly enough to foster the complex learning dynamics necessary for transformational changes. As a result, most of the REDD-stimulated learning did not transform the practices desired in the project.
- Full Text:
- Date Issued: 2015
The influence of contemporary leadership styles on the job satisfaction and organisational commitment of SME employees
- Authors: Kupangwa, Welcome
- Date: 2015
- Subjects: Leadership , Job satisfaction , Organizational commitment , Business enterprises -- Employees
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:9013 , http://hdl.handle.net/10948/d1018508
- Description: Small and medium-sized enterprises (SMEs) have the potential to enhance economic growth and innovation, create jobs, assist large businesses in the distribution of goods and services, and stimulate competition in the economy. However, SMEs face several challenges that influence their longevity, growth, and success. Poor leadership has been highlighted as influencing the job satisfaction and organisational commitment levels of employees, ultimately contributing to employee turnover and SME failure. This study mentions the dishonest, selfish and corrupt nature of modern leadership and identifies a gap in the literature regarding the practice of leadership, especially among South African SMEs. Against this background, the primary objective of this study was to assess the levels of several contemporary leadership styles displayed by SME owners, namely Servant, Authentic, Ethical and Participative leadership, and to investigate their influence on the Job satisfaction and Organisational commitment levels of employees working in SMEs in the Eastern Cape. A quantitative research paradigm was adopted and a sample was drawn from employees working in SMEs in the Eastern Cape Province. The selection of the sample was done using judgement and convenience sampling. A cross-sectional survey using a structured questionnaire was undertaken, and a total of 236 usable questionnaires were returned on which to undertake the statistical analysis. In order to assess the validity of the dependent variables, namely Job satisfaction and Organisational commitment, tests for uni-dimensionality (using factor analysis) were undertaken. An exploratory factor analysis (EFA) was undertaken on the independent variables and four factors were extracted, which corresponded with the theoretical dimensions of Relational leadership, Participative leadership, Servant leadership and Ethical leadership. The items intended to measure Authentic leadership did not load as expected, but a factor named Relational leadership emerged as a result of several items measuring Ethical and Servant leadership loading together. All the independent and dependent variables returned Cronbach’s alpha coefficients of greater than 0.7. As such, sufficient evidence of validity and reliability for the scales measuring the dependent and the independent variables was provided. The data collected was also subjected to several statistical analyses. These included descriptive statistics, Pearson’s product moment correlations, multiple regression analyses, and analysis of variance (ANOVA). The majority of respondents agreed that they experienced Job satisfaction in the SMEs in which they were employed and that they were committed to these businesses. Relational leadership returned the highest mean score while the lowest score was returned for Participative leadership. The majority of respondents also agreed that the SME owners for whom they worked displayed the leadership styles under investigation. All the independent variables were significantly and positively correlated with the dependent variables, Job satisfaction and Organisational commitment. In addition, significant positive correlations were reported between all the independent variables. The multiple regression analyses revealed that three of the four leadership styles investigated in this study had a significant positive influence on both the Job satisfaction and Organisational commitment levels of employees working in the SMEs. These leadership styles were Servant, Relational, and Ethical leadership. In addition, the results of this study showed that Job satisfaction mediates the relationship between Servant, Relational and Ethical leadership, and the Organisational commitment displayed by employees working in SMEs, but does not mediate the relationship between Participative leadership and Organisational commitment. The findings also showed that the demographic variables investigated in this study had no influence on how SME employees perceived the Servant and Relational leadership behaviours of SME owners. However, the results showed that female respondents perceived SME owners as displaying a Participative leadership style more so than male employees did. The findings also revealed that employees with a post-matric qualification perceived that SME owners displayed higher levels of Participative leadership than those without a post-matric qualification. In addition, the ANOVA revealed that White respondents perceived that SME owners exhibited more ethical behaviours than Black respondents did. Given the findings of this study, several recommendations were put forward to enhance the levels of Servant, Relational and Ethical leadership among SME owners, and to ultimately enhance the levels of Job satisfaction and Organisational commitment experienced by their employees. As such SME owners were provided with practical recommendations on how to attract and retain employees by adopting appropriate leadership behaviours. Employees play a vital role in achieving the goals and vision of a business. Satisfied and committed employees put more effort into ensuring the goals and vision of the business are achieved, contributing to business success and ultimately the economy as a whole.
- Full Text:
- Date Issued: 2015
- Authors: Kupangwa, Welcome
- Date: 2015
- Subjects: Leadership , Job satisfaction , Organizational commitment , Business enterprises -- Employees
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:9013 , http://hdl.handle.net/10948/d1018508
- Description: Small and medium-sized enterprises (SMEs) have the potential to enhance economic growth and innovation, create jobs, assist large businesses in the distribution of goods and services, and stimulate competition in the economy. However, SMEs face several challenges that influence their longevity, growth, and success. Poor leadership has been highlighted as influencing the job satisfaction and organisational commitment levels of employees, ultimately contributing to employee turnover and SME failure. This study mentions the dishonest, selfish and corrupt nature of modern leadership and identifies a gap in the literature regarding the practice of leadership, especially among South African SMEs. Against this background, the primary objective of this study was to assess the levels of several contemporary leadership styles displayed by SME owners, namely Servant, Authentic, Ethical and Participative leadership, and to investigate their influence on the Job satisfaction and Organisational commitment levels of employees working in SMEs in the Eastern Cape. A quantitative research paradigm was adopted and a sample was drawn from employees working in SMEs in the Eastern Cape Province. The selection of the sample was done using judgement and convenience sampling. A cross-sectional survey using a structured questionnaire was undertaken, and a total of 236 usable questionnaires were returned on which to undertake the statistical analysis. In order to assess the validity of the dependent variables, namely Job satisfaction and Organisational commitment, tests for uni-dimensionality (using factor analysis) were undertaken. An exploratory factor analysis (EFA) was undertaken on the independent variables and four factors were extracted, which corresponded with the theoretical dimensions of Relational leadership, Participative leadership, Servant leadership and Ethical leadership. The items intended to measure Authentic leadership did not load as expected, but a factor named Relational leadership emerged as a result of several items measuring Ethical and Servant leadership loading together. All the independent and dependent variables returned Cronbach’s alpha coefficients of greater than 0.7. As such, sufficient evidence of validity and reliability for the scales measuring the dependent and the independent variables was provided. The data collected was also subjected to several statistical analyses. These included descriptive statistics, Pearson’s product moment correlations, multiple regression analyses, and analysis of variance (ANOVA). The majority of respondents agreed that they experienced Job satisfaction in the SMEs in which they were employed and that they were committed to these businesses. Relational leadership returned the highest mean score while the lowest score was returned for Participative leadership. The majority of respondents also agreed that the SME owners for whom they worked displayed the leadership styles under investigation. All the independent variables were significantly and positively correlated with the dependent variables, Job satisfaction and Organisational commitment. In addition, significant positive correlations were reported between all the independent variables. The multiple regression analyses revealed that three of the four leadership styles investigated in this study had a significant positive influence on both the Job satisfaction and Organisational commitment levels of employees working in the SMEs. These leadership styles were Servant, Relational, and Ethical leadership. In addition, the results of this study showed that Job satisfaction mediates the relationship between Servant, Relational and Ethical leadership, and the Organisational commitment displayed by employees working in SMEs, but does not mediate the relationship between Participative leadership and Organisational commitment. The findings also showed that the demographic variables investigated in this study had no influence on how SME employees perceived the Servant and Relational leadership behaviours of SME owners. However, the results showed that female respondents perceived SME owners as displaying a Participative leadership style more so than male employees did. The findings also revealed that employees with a post-matric qualification perceived that SME owners displayed higher levels of Participative leadership than those without a post-matric qualification. In addition, the ANOVA revealed that White respondents perceived that SME owners exhibited more ethical behaviours than Black respondents did. Given the findings of this study, several recommendations were put forward to enhance the levels of Servant, Relational and Ethical leadership among SME owners, and to ultimately enhance the levels of Job satisfaction and Organisational commitment experienced by their employees. As such SME owners were provided with practical recommendations on how to attract and retain employees by adopting appropriate leadership behaviours. Employees play a vital role in achieving the goals and vision of a business. Satisfied and committed employees put more effort into ensuring the goals and vision of the business are achieved, contributing to business success and ultimately the economy as a whole.
- Full Text:
- Date Issued: 2015
The influence of financial market development on economic growth in Brics countries
- Authors: Ruzive, Tafadzwa Mutsvedu
- Date: 2015
- Subjects: Financial services industry -- Marketing , Economic development -- BRIC countries
- Language: English
- Type: Thesis , Masters , MPhil
- Identifier: http://hdl.handle.net/10948/6594 , vital:21123
- Description: The debate about the influence of financial market development on economic growth has been ongoing for more than a century. Since Schumpeter (1912) wrote about the happenings on Lombard Street, right up to the economists of today, there is growing interest into how financial market development affects economic activity and hence economic growth. With economic growth gaining prominence in respect of development discourse, inquiry into the finance-growth nexus has grown rapidly. The latest advances of the finance-growth nexus show a positive relationship between financial market development and economic growth. In this regard, little research has been done globally pertaining to most recent economic developments, especially concerning the BRICS economies. This research investigates the influence of financial market development on emerging economies, BRICS and non-BRICS and to determine whether the openness of financial markets in BRICS economies contributed to higher growth trajectories compared to their non-BRICS counterparts. The research utilises the Generalised Method of Moments and an extended endogenous growth model to estimate the influence of a set of financial market indicators. The study found that higher levels of credit to the private sector and financial depth in the BRICS economies contributed to the higher levels of economic growth experienced in the BRICS compared to non-BRICs emerging economies.
- Full Text:
- Date Issued: 2015
- Authors: Ruzive, Tafadzwa Mutsvedu
- Date: 2015
- Subjects: Financial services industry -- Marketing , Economic development -- BRIC countries
- Language: English
- Type: Thesis , Masters , MPhil
- Identifier: http://hdl.handle.net/10948/6594 , vital:21123
- Description: The debate about the influence of financial market development on economic growth has been ongoing for more than a century. Since Schumpeter (1912) wrote about the happenings on Lombard Street, right up to the economists of today, there is growing interest into how financial market development affects economic activity and hence economic growth. With economic growth gaining prominence in respect of development discourse, inquiry into the finance-growth nexus has grown rapidly. The latest advances of the finance-growth nexus show a positive relationship between financial market development and economic growth. In this regard, little research has been done globally pertaining to most recent economic developments, especially concerning the BRICS economies. This research investigates the influence of financial market development on emerging economies, BRICS and non-BRICS and to determine whether the openness of financial markets in BRICS economies contributed to higher growth trajectories compared to their non-BRICS counterparts. The research utilises the Generalised Method of Moments and an extended endogenous growth model to estimate the influence of a set of financial market indicators. The study found that higher levels of credit to the private sector and financial depth in the BRICS economies contributed to the higher levels of economic growth experienced in the BRICS compared to non-BRICs emerging economies.
- Full Text:
- Date Issued: 2015
The influence of livelihood dependency, local ecological knowledge and market proximity on the ecological impacts of harvesting non-timber forest products
- Steele, Melita Z, Shackleton, Charlie M, Shaanker, Ramanan U, Ganeshaiah, Kotiganahalli N, Radloff, Sarah E
- Authors: Steele, Melita Z , Shackleton, Charlie M , Shaanker, Ramanan U , Ganeshaiah, Kotiganahalli N , Radloff, Sarah E
- Date: 2015
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/180908 , vital:43669 , xlink:href="https://doi.org/10.1016/j.forpol.2014.07.011"
- Description: It is well established that non-timber forest products make significant contributions to rural incomes throughout most of the developing world. NTFP use frequently raises concerns about the sustainability of, or ecological impacts associated with, NTFP harvesting, as well as local contextual factors which may limit or reduce the impacts. Here we test the conceptual model first advanced by Uma Shaanker et al. (2004) relating to the factors that may limit or exacerbate the ecological impacts associated with NTFP harvesting. These were the extent of local dependence on NTFPs, the degree of marketing and the level of local ecological knowledge. Data were collected via household questionnaires and ecological surveys of woody plants from eight villages throughout South Africa. We found no significant relationships between measures of ecological impact with local ecological knowledge or market proximity and engagement. There was a strong positive relationship between ecological impacts and NTFP dependency as indexed through mean annual direct-use value for NTFPs. This indicates that the higher the dependency and demand for NTFPs, the greater is the possibility of high impacts to the local environment. However, other contextual drivers not included in the original Uma Shaanker et al. (2004) model may also play a role, particularly the strength of local resource governance institutions.
- Full Text: false
- Date Issued: 2015
- Authors: Steele, Melita Z , Shackleton, Charlie M , Shaanker, Ramanan U , Ganeshaiah, Kotiganahalli N , Radloff, Sarah E
- Date: 2015
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/180908 , vital:43669 , xlink:href="https://doi.org/10.1016/j.forpol.2014.07.011"
- Description: It is well established that non-timber forest products make significant contributions to rural incomes throughout most of the developing world. NTFP use frequently raises concerns about the sustainability of, or ecological impacts associated with, NTFP harvesting, as well as local contextual factors which may limit or reduce the impacts. Here we test the conceptual model first advanced by Uma Shaanker et al. (2004) relating to the factors that may limit or exacerbate the ecological impacts associated with NTFP harvesting. These were the extent of local dependence on NTFPs, the degree of marketing and the level of local ecological knowledge. Data were collected via household questionnaires and ecological surveys of woody plants from eight villages throughout South Africa. We found no significant relationships between measures of ecological impact with local ecological knowledge or market proximity and engagement. There was a strong positive relationship between ecological impacts and NTFP dependency as indexed through mean annual direct-use value for NTFPs. This indicates that the higher the dependency and demand for NTFPs, the greater is the possibility of high impacts to the local environment. However, other contextual drivers not included in the original Uma Shaanker et al. (2004) model may also play a role, particularly the strength of local resource governance institutions.
- Full Text: false
- Date Issued: 2015
The influence of online travel agent performance on customer satisfaction levels at a selected hotel
- Authors: Le Roux, Ignus
- Date: 2015
- Subjects: Consumer satisfaction , Travel agents , Tourism -- South Africa -- Port Elizabeth
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/3105 , vital:20399
- Description: Tourism is an international industry; constant evolution is taking place in the marketing of tourism products and the expectation levels of hotel guests. Online Travel Agents have become more dominant in recent years. This dominance has been assisted by travellers’ more frequent use of the internet to search for information, by the bundling of heterogeneous products and by these agents’ use of the social media. Guest satisfaction levels and expectations are impacted by changes in lifestyle, reasons for travel and the information accessed prior to making their reservations. The basis of this study was establishing the impact of the information supplied by Online Travel Agents on guest satisfaction levels at The Monarch Hotel. The evolution and function of the tourism distribution channel and the factors affecting guest satisfaction and its measurement were explored.
- Full Text:
- Date Issued: 2015
The influence of online travel agent performance on customer satisfaction levels at a selected hotel
- Authors: Le Roux, Ignus
- Date: 2015
- Subjects: Consumer satisfaction , Travel agents , Tourism -- South Africa -- Port Elizabeth
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/3105 , vital:20399
- Description: Tourism is an international industry; constant evolution is taking place in the marketing of tourism products and the expectation levels of hotel guests. Online Travel Agents have become more dominant in recent years. This dominance has been assisted by travellers’ more frequent use of the internet to search for information, by the bundling of heterogeneous products and by these agents’ use of the social media. Guest satisfaction levels and expectations are impacted by changes in lifestyle, reasons for travel and the information accessed prior to making their reservations. The basis of this study was establishing the impact of the information supplied by Online Travel Agents on guest satisfaction levels at The Monarch Hotel. The evolution and function of the tourism distribution channel and the factors affecting guest satisfaction and its measurement were explored.
- Full Text:
- Date Issued: 2015
The influence of organisational culture on a high commitment work system and organisational commitment : the case of a Chinese multinational corporation in South Africa
- Authors: Mabuza, Linda Tengetile
- Date: 2015
- Subjects: Corporate culture -- South Africa , Corporate culture -- Cross-cultural studies , International business enterprises -- South Africa , Investments, Chinese -- South Africa , Organizational commitment -- South Africa , Performance -- Management , Host countries (Business) , Personnel management -- South Africa , South Africa -- Foreign economic relations -- China
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:1205 , http://hdl.handle.net/10962/d1017768
- Description: Chinese presence in Africa has been rapidly increasing in the past few years and has been speculated to be mainly due to China seeking Africa’s political alliance and access to Africa’s natural resources and growing consumer markets. The growing presence of Chinese organisations in Africa, however, has not been without its challenges. In particular, Chinese multinational corporations (MNCs) in search of consumer markets in Africa have been cited as facing human resource (HR) challenges which may affect their organisational performance. In this regard, literature on human resource management has already established the important role of organisational culture, HR practices and organisational commitment in enabling organisations to achieve superior organisational performance. Given the fact that there is currently little research knowledge of Chinese presence in Africa at the organisational level, this research aimed to contribute empirical knowledge to the growing body of research in this area. Specifically, the main purpose of this research was to examine how the organisational culture of a Chinese MNC’s South African subsidiary has shaped the nature of its high commitment work system (HCWS) and to assess the consequences thereof on organisational commitment. In alignment with the phenomenological paradigm, the research applied a descriptive and explanatory case study methodology in order to generate rich, qualitative data which was required for in-depth descriptions and to uncover the underlying interactions of the researched phenomena at the subsidiary. The selected case for the research was, therefore, a Chinese MNC operating in the personal computer (PC) industry, which had expanded its operations to South Africa in order to reach Africa’s growing consumer markets. In particular, the South African subsidiary served as a PC sales and distribution organisation for the Chinese MNC. There were about 40 employees at the subsidiary who were all South African employees. Semi-structured, in-depth interviews were conducted with twelve employees from different job functions and across different job levels. Data collection was guided by the theoretical frameworks by Cameron and Freeman (1991) for organisational culture and Xiao and Bjorkman (2006) for the HCWS and organisational commitment. The data collected from interviews was then analysed through a qualitative, content analysis process. The findings of the research thus pointed to the market culture as the dominant organisational culture type at the South African subsidiary of the Chinese MNC; characteristics of the adhocracy and clan cultures were also discovered. The externally oriented market culture was found to be the most relevant for the high performance and market leadership aspirations of the subsidiary. The market culture also appears to be the most appropriate organisational culture that would enable the subsidiary to deal with the competitive nature of the PC industry. Furthermore, it was found that certain cultural values emphasised by the Confucian and Ubuntu value systems could have had a part to play in the formation of the subsidiary’s organisational culture. The market culture was also found to have had the greatest influence in shaping the primarily performance oriented HCWS practices. Of the investigated HR practices at the subsidiary, all were found to be consistent with HCWS practices, with the exception of ownership practices and the performance appraisal system. Finally, although there were generally high levels of organisational commitment reported at the subsidiary, other job and organisational context factors besides the HCWS practices were found to be the major contributors to those feelings of organisational commitment. By investigating the organisational culture, HCWS and organisational commitment of a Chinese MNC in South Africa, this research has added to the body of knowledge concerning the growing presence of Chinese organisations in Africa. Based on the empirical findings of this study, several recommendations have been made in an attempt to assist the Chinese MNC manage the organisational commitment of its South African employees towards superior organisational performance.
- Full Text:
- Date Issued: 2015
- Authors: Mabuza, Linda Tengetile
- Date: 2015
- Subjects: Corporate culture -- South Africa , Corporate culture -- Cross-cultural studies , International business enterprises -- South Africa , Investments, Chinese -- South Africa , Organizational commitment -- South Africa , Performance -- Management , Host countries (Business) , Personnel management -- South Africa , South Africa -- Foreign economic relations -- China
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:1205 , http://hdl.handle.net/10962/d1017768
- Description: Chinese presence in Africa has been rapidly increasing in the past few years and has been speculated to be mainly due to China seeking Africa’s political alliance and access to Africa’s natural resources and growing consumer markets. The growing presence of Chinese organisations in Africa, however, has not been without its challenges. In particular, Chinese multinational corporations (MNCs) in search of consumer markets in Africa have been cited as facing human resource (HR) challenges which may affect their organisational performance. In this regard, literature on human resource management has already established the important role of organisational culture, HR practices and organisational commitment in enabling organisations to achieve superior organisational performance. Given the fact that there is currently little research knowledge of Chinese presence in Africa at the organisational level, this research aimed to contribute empirical knowledge to the growing body of research in this area. Specifically, the main purpose of this research was to examine how the organisational culture of a Chinese MNC’s South African subsidiary has shaped the nature of its high commitment work system (HCWS) and to assess the consequences thereof on organisational commitment. In alignment with the phenomenological paradigm, the research applied a descriptive and explanatory case study methodology in order to generate rich, qualitative data which was required for in-depth descriptions and to uncover the underlying interactions of the researched phenomena at the subsidiary. The selected case for the research was, therefore, a Chinese MNC operating in the personal computer (PC) industry, which had expanded its operations to South Africa in order to reach Africa’s growing consumer markets. In particular, the South African subsidiary served as a PC sales and distribution organisation for the Chinese MNC. There were about 40 employees at the subsidiary who were all South African employees. Semi-structured, in-depth interviews were conducted with twelve employees from different job functions and across different job levels. Data collection was guided by the theoretical frameworks by Cameron and Freeman (1991) for organisational culture and Xiao and Bjorkman (2006) for the HCWS and organisational commitment. The data collected from interviews was then analysed through a qualitative, content analysis process. The findings of the research thus pointed to the market culture as the dominant organisational culture type at the South African subsidiary of the Chinese MNC; characteristics of the adhocracy and clan cultures were also discovered. The externally oriented market culture was found to be the most relevant for the high performance and market leadership aspirations of the subsidiary. The market culture also appears to be the most appropriate organisational culture that would enable the subsidiary to deal with the competitive nature of the PC industry. Furthermore, it was found that certain cultural values emphasised by the Confucian and Ubuntu value systems could have had a part to play in the formation of the subsidiary’s organisational culture. The market culture was also found to have had the greatest influence in shaping the primarily performance oriented HCWS practices. Of the investigated HR practices at the subsidiary, all were found to be consistent with HCWS practices, with the exception of ownership practices and the performance appraisal system. Finally, although there were generally high levels of organisational commitment reported at the subsidiary, other job and organisational context factors besides the HCWS practices were found to be the major contributors to those feelings of organisational commitment. By investigating the organisational culture, HCWS and organisational commitment of a Chinese MNC in South Africa, this research has added to the body of knowledge concerning the growing presence of Chinese organisations in Africa. Based on the empirical findings of this study, several recommendations have been made in an attempt to assist the Chinese MNC manage the organisational commitment of its South African employees towards superior organisational performance.
- Full Text:
- Date Issued: 2015
The influence of people-centred leadership styles on owners's job satisfation and perceived financial performance : an SME perspective
- Authors: Silwana, Hlumela Zukiswa
- Date: 2015
- Subjects: Leadership , Job satisfaction , Business enterprises
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:9307 , http://hdl.handle.net/10948/d1018511
- Description: It is well supported in the literature that a positive relationship exists between effective leadership and business success. Given the importance of SMEs in South Africa, their large numbers, and the extent to which they positively influence the economy of the country, it is important to study leadership behaviour in the context of small and medium-sized businesses in an attempt to reduce their high failure rates. More specifically a need has been identified to research, develop, and implement more ethical and relational leadership styles among business owners. The focus of this study is therefore on several people-centred leadership styles, and their influence on selected outcomes among the owners of small and medium-sized businesses. Against this background, the primary objective is to assess the level of Servant, Authentic, Ethical and Participative leadership exhibited by SME owners in the Eastern Cape, and to establish whether exhibiting these people-centred leadership styles influences their Job satisfaction and the Perceived financial performance of their businesses. A quantitative research paradigm was adopted for this study. More specifically, an explanatory and descriptive study of a cross-sectional nature was undertaken. A comprehensive literature study was conducted using existing secondary sources. The primary data collection procedures involved selecting the population, the sample, and the sampling method, as well as the sample size for the study. For the purpose of this study, the population consisted of all small and medium-sized business owners operating businesses within the boundaries of the Eastern Cape Province. A sample of 500 of these businesses was selected by means of convenience sampling. In total 246 usable questionnaires were returned, on which to undertake the statistical analyses. A survey was undertaken, and a structured, self-administered questionnaire was used to gather the necessary data. The scales for measuring the constructs under investigation were developed based on previous research. To assess the validity of the scales measuring the constructs in this study, an exploratory factor analysis was undertaken, and its reliability was tested by calculating Cronbach’s alpha coefficients. Statistical analysis included descriptive statistics, Pearson’s product moment correlation, regression analyses (simple and multiple) and analyses of variance. Five usable factors were extracted from the exploratory factor analysis; these corresponded with the theoretical dimensions of Participative leadership, Perceived financial performance, Ethical leadership, Servant leadership, and Job satisfaction. The items measuring Authentic leadership did not load as expected, and this construct was thus no longer included in empirical testing in this study. Satisfactory evidence of validity and reliability were provided for the other factors extracted. The independent variables reported mean scores of between 3.760 and 4.548, with the majority of respondents agreeing with the statements measuring these leadership styles. The dependent variables Job satisfaction and Perceived financial performance returned mean scores of 4.508 and 3.962 respectively, with the majority of the respondents agreeing with the statements measuring these factors. All the independent variables (Servant leadership, Ethical leadership and Participative leadership) reported significant and positive relationships with each another. The correlation between the dependent variables (Perceived financial performance and Job satisfaction) was found to reflect a moderate positive association. Job satisfaction and Perceived financial performance both reported significantly positive associations with all the independent variables. The simple regression analyses undertaken revealed a significant positive linear relationship between Perceived financial performance and Job satisfaction, as well as between Perceived financial performance and the Job satisfaction of SME owners. The multiple regression analysis undertaken revealed that significant positive linear relationships existed between two independent variables, Servant leadership and Ethical leadership, and the dependent variable Job satisfaction. A significant positive linear relationship was also reported between Ethical leadership and Perceived financial performance. No relationships were found between the independent variables Servant leadership and Participative leadership and the dependent variable Perceived financial performance. No relationship was found between the independent variable Participative leadership and the dependent variable Job satisfaction. The analysis of variance results revealed that Gender, Qualification and the Nature of the business exerted a significant influence on Servant leadership. The results also showed that Generation exerted a significant influence on the perceived level of Ethical leadership displayed by the SME owner. In addition, the findings of the present study showed that the demographic variable Nature of the business exerted a significant influence on Participative leadership. Investigating leadership styles among SMEs is a topic of significance and growing interest among researchers. Given the importance of SMEs to the economies of countries, investigating factors that influence their success is vital. The findings of this study showed that by adopting more people-centred leadership styles, the job satisfaction of SME owners was increased, and the financial performance of their businesses improved. It is hoped that the findings of this study will provide SME owners with practical suggestions on how to increase their levels of job satisfaction and the financial performance of their businesses, and that the suggestions for future research will inspire future researchers to further investigate the issue of leadership among SMEs.
- Full Text:
- Date Issued: 2015
- Authors: Silwana, Hlumela Zukiswa
- Date: 2015
- Subjects: Leadership , Job satisfaction , Business enterprises
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:9307 , http://hdl.handle.net/10948/d1018511
- Description: It is well supported in the literature that a positive relationship exists between effective leadership and business success. Given the importance of SMEs in South Africa, their large numbers, and the extent to which they positively influence the economy of the country, it is important to study leadership behaviour in the context of small and medium-sized businesses in an attempt to reduce their high failure rates. More specifically a need has been identified to research, develop, and implement more ethical and relational leadership styles among business owners. The focus of this study is therefore on several people-centred leadership styles, and their influence on selected outcomes among the owners of small and medium-sized businesses. Against this background, the primary objective is to assess the level of Servant, Authentic, Ethical and Participative leadership exhibited by SME owners in the Eastern Cape, and to establish whether exhibiting these people-centred leadership styles influences their Job satisfaction and the Perceived financial performance of their businesses. A quantitative research paradigm was adopted for this study. More specifically, an explanatory and descriptive study of a cross-sectional nature was undertaken. A comprehensive literature study was conducted using existing secondary sources. The primary data collection procedures involved selecting the population, the sample, and the sampling method, as well as the sample size for the study. For the purpose of this study, the population consisted of all small and medium-sized business owners operating businesses within the boundaries of the Eastern Cape Province. A sample of 500 of these businesses was selected by means of convenience sampling. In total 246 usable questionnaires were returned, on which to undertake the statistical analyses. A survey was undertaken, and a structured, self-administered questionnaire was used to gather the necessary data. The scales for measuring the constructs under investigation were developed based on previous research. To assess the validity of the scales measuring the constructs in this study, an exploratory factor analysis was undertaken, and its reliability was tested by calculating Cronbach’s alpha coefficients. Statistical analysis included descriptive statistics, Pearson’s product moment correlation, regression analyses (simple and multiple) and analyses of variance. Five usable factors were extracted from the exploratory factor analysis; these corresponded with the theoretical dimensions of Participative leadership, Perceived financial performance, Ethical leadership, Servant leadership, and Job satisfaction. The items measuring Authentic leadership did not load as expected, and this construct was thus no longer included in empirical testing in this study. Satisfactory evidence of validity and reliability were provided for the other factors extracted. The independent variables reported mean scores of between 3.760 and 4.548, with the majority of respondents agreeing with the statements measuring these leadership styles. The dependent variables Job satisfaction and Perceived financial performance returned mean scores of 4.508 and 3.962 respectively, with the majority of the respondents agreeing with the statements measuring these factors. All the independent variables (Servant leadership, Ethical leadership and Participative leadership) reported significant and positive relationships with each another. The correlation between the dependent variables (Perceived financial performance and Job satisfaction) was found to reflect a moderate positive association. Job satisfaction and Perceived financial performance both reported significantly positive associations with all the independent variables. The simple regression analyses undertaken revealed a significant positive linear relationship between Perceived financial performance and Job satisfaction, as well as between Perceived financial performance and the Job satisfaction of SME owners. The multiple regression analysis undertaken revealed that significant positive linear relationships existed between two independent variables, Servant leadership and Ethical leadership, and the dependent variable Job satisfaction. A significant positive linear relationship was also reported between Ethical leadership and Perceived financial performance. No relationships were found between the independent variables Servant leadership and Participative leadership and the dependent variable Perceived financial performance. No relationship was found between the independent variable Participative leadership and the dependent variable Job satisfaction. The analysis of variance results revealed that Gender, Qualification and the Nature of the business exerted a significant influence on Servant leadership. The results also showed that Generation exerted a significant influence on the perceived level of Ethical leadership displayed by the SME owner. In addition, the findings of the present study showed that the demographic variable Nature of the business exerted a significant influence on Participative leadership. Investigating leadership styles among SMEs is a topic of significance and growing interest among researchers. Given the importance of SMEs to the economies of countries, investigating factors that influence their success is vital. The findings of this study showed that by adopting more people-centred leadership styles, the job satisfaction of SME owners was increased, and the financial performance of their businesses improved. It is hoped that the findings of this study will provide SME owners with practical suggestions on how to increase their levels of job satisfaction and the financial performance of their businesses, and that the suggestions for future research will inspire future researchers to further investigate the issue of leadership among SMEs.
- Full Text:
- Date Issued: 2015
The influence of teachers' strikes on matriculation results
- Authors: Kumalo, Siphokazi Lucille
- Date: 2015
- Subjects: Strikes and lockouts -- Teachers -- South Africa -- Eastern Cape , Teachers' unions -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/4090 , vital:20511
- Description: The majority of South African public schools are not performing well and this is particularly true of the schools in the Eastern Cape Province. Many factors including teacher union strikes contributed to this situation. Teachers’ unions went on strike without considering the rights of learners. The aim of this research was to determine the extent to which teachers’ unionized strikes influence the quality of teaching and learning at selected high schools of Port Elizabeth in the Eastern Cape Province and to determine ways in which the teacher unions can also protect the rights of learners to achieve quality education in these selected high schools. The research consists of a study of relevant literature, followed by a qualitative research design. The sample group consisted of Grade 12 teachers, deputy principals and site stewards from four high schools in the Port Elizabeth District. The researcher trusts that her understanding as presented in the research findings and recommendations will benefit not only herself but will empower all the teacher unions’ members and learners coping with the stress of teaching and learning at times of strikes.
- Full Text:
- Date Issued: 2015
- Authors: Kumalo, Siphokazi Lucille
- Date: 2015
- Subjects: Strikes and lockouts -- Teachers -- South Africa -- Eastern Cape , Teachers' unions -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/4090 , vital:20511
- Description: The majority of South African public schools are not performing well and this is particularly true of the schools in the Eastern Cape Province. Many factors including teacher union strikes contributed to this situation. Teachers’ unions went on strike without considering the rights of learners. The aim of this research was to determine the extent to which teachers’ unionized strikes influence the quality of teaching and learning at selected high schools of Port Elizabeth in the Eastern Cape Province and to determine ways in which the teacher unions can also protect the rights of learners to achieve quality education in these selected high schools. The research consists of a study of relevant literature, followed by a qualitative research design. The sample group consisted of Grade 12 teachers, deputy principals and site stewards from four high schools in the Port Elizabeth District. The researcher trusts that her understanding as presented in the research findings and recommendations will benefit not only herself but will empower all the teacher unions’ members and learners coping with the stress of teaching and learning at times of strikes.
- Full Text:
- Date Issued: 2015
The influence of the physical environment, topography and time on the inshore distribution of invertebrate larvae : a multi-taxon approach
- Authors: Duna, Oliver Olwethu
- Date: 2015
- Subjects: Benthic animals -- Larvae , Benthic animals -- Ecology , Plankton -- Larvae
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5926 , http://hdl.handle.net/10962/d1017804
- Description: Coastal hydrodynamics regulate population dynamics through the distribution and dispersal of the meroplankton of many benthic invertebrates. I examined the hydrodynamics at four different sites on the south-east coast of South Africa and coupled them with larval sampling done at high temporal and spatial resolution. Day and night sampling was done at all four sites and a continuous 24 hour study was done in one site, both forms of sampling were carried out in autumn and spring. Samples were taken at two stations, 900 metres offshore and 300 metres apart, within each site. Water properties measured were depth, temperature and current velocity and direction. Plankton samples were collected using a plankton pump at various depths, from the surface, bottom and either side of the thermocline when present. A wide range of taxa (mostly bryozoans, bivalves, barnacles and decapods) was examined. 2-way ANOVAs were used to test the effects of time and depth on each taxon. In addition, multiple regression analyses were performed on each taxon to investigate the effects of hydrodynamics on the distribution of larvae. Bryozoanlarvae proved to be positively phototactic whilst bivalve veligers, barnacle larvae and decapod zoeae performed diel vertical migration. Turbulence and temperature had an effect on the vertical distribution/migration of decapod zoeae. These results highlight the role of taxon-specific responses to flow and the potential differential effects on larval retention and ultimately connectivity of benthic populations.
- Full Text:
- Date Issued: 2015
- Authors: Duna, Oliver Olwethu
- Date: 2015
- Subjects: Benthic animals -- Larvae , Benthic animals -- Ecology , Plankton -- Larvae
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5926 , http://hdl.handle.net/10962/d1017804
- Description: Coastal hydrodynamics regulate population dynamics through the distribution and dispersal of the meroplankton of many benthic invertebrates. I examined the hydrodynamics at four different sites on the south-east coast of South Africa and coupled them with larval sampling done at high temporal and spatial resolution. Day and night sampling was done at all four sites and a continuous 24 hour study was done in one site, both forms of sampling were carried out in autumn and spring. Samples were taken at two stations, 900 metres offshore and 300 metres apart, within each site. Water properties measured were depth, temperature and current velocity and direction. Plankton samples were collected using a plankton pump at various depths, from the surface, bottom and either side of the thermocline when present. A wide range of taxa (mostly bryozoans, bivalves, barnacles and decapods) was examined. 2-way ANOVAs were used to test the effects of time and depth on each taxon. In addition, multiple regression analyses were performed on each taxon to investigate the effects of hydrodynamics on the distribution of larvae. Bryozoanlarvae proved to be positively phototactic whilst bivalve veligers, barnacle larvae and decapod zoeae performed diel vertical migration. Turbulence and temperature had an effect on the vertical distribution/migration of decapod zoeae. These results highlight the role of taxon-specific responses to flow and the potential differential effects on larval retention and ultimately connectivity of benthic populations.
- Full Text:
- Date Issued: 2015
The integration of previously hospital based Antiretroviral sites into Primary Health Care clinics in Lukhanji sub district of Chris Hani District Municipality
- Authors: Pakade, Nonkoliso
- Date: 2015
- Subjects: HIV/AIDS -- Antiretroviral(ARV) -- Eastern Cape -- South Africa Human Immune Virus(HIV) -- Antiretroviral therapy(ART) treatment
- Language: English
- Type: Thesis , Masters/Doctoral , MSc Nursing
- Identifier: http://hdl.handle.net/11260/1431 , vital:35585
- Description: The first country to take note of HIV/AIDS was United States of America in the report published by Atlanta based Centers for Disease Control (CDC) and Prevention (Barnett and Whiteside, 2006). In the past years ARV program was largely hospital-based where clients were assessed by doctors, discussed with multidisciplinary team which involved social workers, dieticians and pharmacists before initiated on treatment. The integration of ARV services into PHC was one of the strategies proposed to increase access to treatment for people living with HIV/AIDS (WHO, 2010). The study sought to describe the integration of previously hospital based ARV sites into PHC clinics in Lukhanji sub-district of Chris Hani Health District in Eastern Cape. A qualitative research design was followed and a phenomenological approach was used to examine the experiences of clients who previously took ARV treatment at Frontier hospital and were transferred to take treatment at Ezibeleni, Ilinge, Philani and Sada clinics. An interview guide was used for data collection. Participants were sampled through purposive sampling. The study was composed of four focus groups for clients with a total of forty (18 males and 22 females) and 10 professional nurses for semi structured individual interviews. In the analysis of data, the collected data from voice recordings were transcribed verbatim and translated from isiXhosa to English. The researcher immersed herself into the data, re read, and themes and sub-themes emerged. Related topics to each other were grouped together in order to reduce the number of categories and to create themes. The similar categories were grouped and analyzed. Findings indicated that integration of ART sites into PHC clinics was a strategy put in place to increase accessibility and availability of ARV treatment to all communities. Both participants stated that integration brought services nearer to people and caused much relief from spending more money for travelling long distances. Ambulance delays were reported by both participants as the major challenge in the referral system between clinics and the hospital. Other challenges facing integration of ART services into PHC clinics included long waiting times caused by shortage of staff in the clinics, lack of consulting rooms for nurses and waiting areas for clients. Also lack of other health care professionals including social workers, dieticians, and psychologists was mentioned. The recommendations made by the researcher on the conclusion of this study addressed all the challenges mentioned by participants. The aim was to increase accessibility and availability of ART services to all the communities.
- Full Text:
- Date Issued: 2015
- Authors: Pakade, Nonkoliso
- Date: 2015
- Subjects: HIV/AIDS -- Antiretroviral(ARV) -- Eastern Cape -- South Africa Human Immune Virus(HIV) -- Antiretroviral therapy(ART) treatment
- Language: English
- Type: Thesis , Masters/Doctoral , MSc Nursing
- Identifier: http://hdl.handle.net/11260/1431 , vital:35585
- Description: The first country to take note of HIV/AIDS was United States of America in the report published by Atlanta based Centers for Disease Control (CDC) and Prevention (Barnett and Whiteside, 2006). In the past years ARV program was largely hospital-based where clients were assessed by doctors, discussed with multidisciplinary team which involved social workers, dieticians and pharmacists before initiated on treatment. The integration of ARV services into PHC was one of the strategies proposed to increase access to treatment for people living with HIV/AIDS (WHO, 2010). The study sought to describe the integration of previously hospital based ARV sites into PHC clinics in Lukhanji sub-district of Chris Hani Health District in Eastern Cape. A qualitative research design was followed and a phenomenological approach was used to examine the experiences of clients who previously took ARV treatment at Frontier hospital and were transferred to take treatment at Ezibeleni, Ilinge, Philani and Sada clinics. An interview guide was used for data collection. Participants were sampled through purposive sampling. The study was composed of four focus groups for clients with a total of forty (18 males and 22 females) and 10 professional nurses for semi structured individual interviews. In the analysis of data, the collected data from voice recordings were transcribed verbatim and translated from isiXhosa to English. The researcher immersed herself into the data, re read, and themes and sub-themes emerged. Related topics to each other were grouped together in order to reduce the number of categories and to create themes. The similar categories were grouped and analyzed. Findings indicated that integration of ART sites into PHC clinics was a strategy put in place to increase accessibility and availability of ARV treatment to all communities. Both participants stated that integration brought services nearer to people and caused much relief from spending more money for travelling long distances. Ambulance delays were reported by both participants as the major challenge in the referral system between clinics and the hospital. Other challenges facing integration of ART services into PHC clinics included long waiting times caused by shortage of staff in the clinics, lack of consulting rooms for nurses and waiting areas for clients. Also lack of other health care professionals including social workers, dieticians, and psychologists was mentioned. The recommendations made by the researcher on the conclusion of this study addressed all the challenges mentioned by participants. The aim was to increase accessibility and availability of ART services to all the communities.
- Full Text:
- Date Issued: 2015
The interrelationships between foreign direct investment and economic growth in Africa
- Authors: Bolani, Lindelwa Mandisa
- Date: 2015
- Subjects: Investments, Foreign -- Africa , Economic development -- Africa , Africa -- Economic conditions -- 1960- , Africa -- Foreign economic relations , Gross domestic product -- Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:1123 , http://hdl.handle.net/10962/d1019885
- Description: There has been a long search for the keys to development and economic growth in Africa. This study investigates the relationship between FDI and economic growth over the period 2000-2012 using data from 48 African countries. On the aggregate regional level FDI and economic growth were found to be positively correlated during this period. Using panel data econometric techniques and the Panel Granger Causality test, results revealed that a bi-directional causality relationship existed between FDI and GDP. Thus, the results suggest that GDP is a requirement for increased investment, and at the same time is the result of increased foreign investment. Thus, the conclusion is that African policy makers are justified in increasing their attempts to create an attractive business environment for foreign investors, as it is beneficial for economic growth.
- Full Text:
- Date Issued: 2015
- Authors: Bolani, Lindelwa Mandisa
- Date: 2015
- Subjects: Investments, Foreign -- Africa , Economic development -- Africa , Africa -- Economic conditions -- 1960- , Africa -- Foreign economic relations , Gross domestic product -- Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:1123 , http://hdl.handle.net/10962/d1019885
- Description: There has been a long search for the keys to development and economic growth in Africa. This study investigates the relationship between FDI and economic growth over the period 2000-2012 using data from 48 African countries. On the aggregate regional level FDI and economic growth were found to be positively correlated during this period. Using panel data econometric techniques and the Panel Granger Causality test, results revealed that a bi-directional causality relationship existed between FDI and GDP. Thus, the results suggest that GDP is a requirement for increased investment, and at the same time is the result of increased foreign investment. Thus, the conclusion is that African policy makers are justified in increasing their attempts to create an attractive business environment for foreign investors, as it is beneficial for economic growth.
- Full Text:
- Date Issued: 2015
The intersection of culture and gender in constructions of ukuzila’ (spousal mourning) among AmaXhosa in the Eastern Cape:
- Ngqangweni, Hlonelwa, Macleod, Catriona I
- Authors: Ngqangweni, Hlonelwa , Macleod, Catriona I
- Date: 2015
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/143615 , vital:38267 , https://ischp.files.wordpress.com/2015/08/ischp_2015_abstract_booklet.pdf
- Description: Mourning is a universal and culturally specific practice following the death of a significant other. The Xhosa equivalent of the mourning process is ukuzila. Very little has been written on the subject of ukuzila in spite of the detrimental effects of the practice on the widows’ health and safety, as well as the discriminatory nature of the practice. This paper presents the findings of a discourse analytic qualitative study conducted among isiXhosa speaking men and women in South Africa. The study revealed ukuzila as a practice put in place to show respect to the deceased. However, the showing of respect revealed a historically gendered cultural practice, imbued with power relations and centred on ‘visibility’. In light of this finding, the authors propose further research which includes exploring people’s willingness to change to a non-gendered practice of ukuzila, and alternate expressions of ukuzila that suit women rather than ‘culture’ and society.
- Full Text:
- Date Issued: 2015
- Authors: Ngqangweni, Hlonelwa , Macleod, Catriona I
- Date: 2015
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/143615 , vital:38267 , https://ischp.files.wordpress.com/2015/08/ischp_2015_abstract_booklet.pdf
- Description: Mourning is a universal and culturally specific practice following the death of a significant other. The Xhosa equivalent of the mourning process is ukuzila. Very little has been written on the subject of ukuzila in spite of the detrimental effects of the practice on the widows’ health and safety, as well as the discriminatory nature of the practice. This paper presents the findings of a discourse analytic qualitative study conducted among isiXhosa speaking men and women in South Africa. The study revealed ukuzila as a practice put in place to show respect to the deceased. However, the showing of respect revealed a historically gendered cultural practice, imbued with power relations and centred on ‘visibility’. In light of this finding, the authors propose further research which includes exploring people’s willingness to change to a non-gendered practice of ukuzila, and alternate expressions of ukuzila that suit women rather than ‘culture’ and society.
- Full Text:
- Date Issued: 2015
The investigation of perceptions of professional nurses regarding care of mental health care users in a general hospital setting
- Manona-Nkanjeni, Nonkanyiso Yvonne
- Authors: Manona-Nkanjeni, Nonkanyiso Yvonne
- Date: 2015
- Language: English
- Type: Thesis , Masters , MSc (Nursing Science)
- Identifier: vital:11924 , http://hdl.handle.net/10353/d1020200
- Description: This study sought to explore the perceptions of professional nurses regarding care of stabilised mental health care users in a general hospital setting. A qualitative, explanatory, descriptive and contextual design was used for the study. A non-probability, purposive sampling method was used to select 12 participants from the Cecilia Makiwane Hospital in Mdantsane. Data were collected through semi-structured interviews. The services of an independent interviewer were used to avoid any bias as interviews took place where the researcher is employed. The services of an editor were also used for language control (see Annexure H). The researcher repeatedly listened to the tapes used for data collection until completely satisfied with the interpretation of verbatim data. The research study was conducted in an ethically reflective manner and trustworthiness was ensured at all times. Four themes emerged from the analysis of the interviews: fear, stigma, myths and training. The researcher utilised the services of an independent coder who verified the identified major themes. The findings revealed that participants were fearful due to lack of knowledge, experience and psychiatric nursing skills. Participants feared because they lack knowledge about psychiatric medication and because mental health care users may have relapse. The participants also attached a stigma to mental health care users, which resulted in poor communication between participants and the stabilised mental health care user; a negative attitude towards mental health care users; and non-acceptance. Participants believed in myths about mental illness; they regarded it as contagious; and perceived mental health care users as dangerous. The participants strongly recommended that training should be provided to improve their knowledge and skills to enable them to care for stabilised mental health care users in a general hospital setting. The following should be facilitated: in-service training; adoption of a positive attitude; dispersal of myths and fear; education about referral systems; and allocation of specialist psychiatric nurses to medical wards for referral purposes with regard to complicated cases.
- Full Text:
- Date Issued: 2015
- Authors: Manona-Nkanjeni, Nonkanyiso Yvonne
- Date: 2015
- Language: English
- Type: Thesis , Masters , MSc (Nursing Science)
- Identifier: vital:11924 , http://hdl.handle.net/10353/d1020200
- Description: This study sought to explore the perceptions of professional nurses regarding care of stabilised mental health care users in a general hospital setting. A qualitative, explanatory, descriptive and contextual design was used for the study. A non-probability, purposive sampling method was used to select 12 participants from the Cecilia Makiwane Hospital in Mdantsane. Data were collected through semi-structured interviews. The services of an independent interviewer were used to avoid any bias as interviews took place where the researcher is employed. The services of an editor were also used for language control (see Annexure H). The researcher repeatedly listened to the tapes used for data collection until completely satisfied with the interpretation of verbatim data. The research study was conducted in an ethically reflective manner and trustworthiness was ensured at all times. Four themes emerged from the analysis of the interviews: fear, stigma, myths and training. The researcher utilised the services of an independent coder who verified the identified major themes. The findings revealed that participants were fearful due to lack of knowledge, experience and psychiatric nursing skills. Participants feared because they lack knowledge about psychiatric medication and because mental health care users may have relapse. The participants also attached a stigma to mental health care users, which resulted in poor communication between participants and the stabilised mental health care user; a negative attitude towards mental health care users; and non-acceptance. Participants believed in myths about mental illness; they regarded it as contagious; and perceived mental health care users as dangerous. The participants strongly recommended that training should be provided to improve their knowledge and skills to enable them to care for stabilised mental health care users in a general hospital setting. The following should be facilitated: in-service training; adoption of a positive attitude; dispersal of myths and fear; education about referral systems; and allocation of specialist psychiatric nurses to medical wards for referral purposes with regard to complicated cases.
- Full Text:
- Date Issued: 2015
The isolation, characterisation and chemotaxonomic significance of secondary metabolites from selected South African Laurencia spp. Rhodophyta
- Authors: Fakee, Jameel
- Date: 2015
- Language: English
- Type: text , Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10962/64696 , vital:28593
- Description: Bioprospection of marine organisms as a potential source for lead drugs is becoming increasingly popular. The secondary metabolome of these organisms consists of structurally diverse molecules possessing unprecedented carbon skeletons, the biosynthesis of which occurs via complex metabolomic pathways driven by specialist enzymes. This structural novelty is highly influential on the favourable bioactivity these compounds display. A prominent example of such a compound is trabectedin marketed as Yondelis®. Registered for the treatment of soft tissue sarcomas, this marine drug was developed from extracts of the tunicate Ecteinascidia turbinata. South Africa is renowned for possessing a highly diverse marine biota including several endemic species of marine red algae belonging to the Laurencia sensu stricto genus, which falls within the Laurencia complex. Despite having a good reputation for fascinating secondary metabolites, the taxonomy of Laurencia natural products is proving challenging for reasons including the presence of cryptic species, as well as individual species displaying morphological variability. The aim of this study was thus to isolate secondary metabolites from various South African Laurencia spp. and subsequently assess their chemotaxonomic significance by analysis of a parallel plastid rbcL phylogeny study of Laurencia spp. This study reports the first phycochemical investigation into Laurencia natalensis Kylin, Laurencia cf. corymbosa J.Agardh, Laurencia complanata (Suhr) Kützing, Laurencia sodwaniensis Francis, Bolton, Mattio and Anderson submitted, Laurencia multiclavata Francis, Bolton, Mattio and Anderson submitted, and a South African specimen of Laurenciella marilzae Gil-Rodríguez, Sentíes, Díaz-Larrea, Cassano and M.T. Fujii (basionym: Laurencia marilzae) originally described from Spain. Additionally, the chemical profiles of previously explored species Laurencia flexuosa Kützing and Laurencia glomerata Kützing were re-investigated. The organic extracts of the above species afforded 31 compounds belonging to a wide array of structural classes including halo-chamigranes, linear C15 acetogenins, indole alkaloids, cuparanes and cyclic bromo-ethers. A new tri-cyclic keto-cuparane (4.4) was isolated from L.cf. corymbosa alongside the new cuparanes 4.1 and 4.7. Algoane (5.9), a unique marker compound isolated from L. natalensis, was previously only reported from a sea-hare. Such marker compounds which are exclusive to an individual algal species increase the ease of their subsequent identification. The feasibility of chemotaxonomy as an additional tool to classify Laurencia spp. Was established as broad predictions of a specimen’s phylogeny, based on representatives of its secondary metabolome, proved viable. The study specimens were shown to possess similar chemical profiles to their sister species e.g. L. complanata, L. sodwaniensis and L. multiclavata produced similar metabolites to their sister species as inferred by an rbcL phylogeny tree. Finally, a 1H NMR profiling study on the crude organic extracts of various Laurencia spp. generated distinctive, reproducible spectra, exposing the value of NMR spectroscopy as a rudimentary species discernment tool.
- Full Text:
- Date Issued: 2015
- Authors: Fakee, Jameel
- Date: 2015
- Language: English
- Type: text , Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10962/64696 , vital:28593
- Description: Bioprospection of marine organisms as a potential source for lead drugs is becoming increasingly popular. The secondary metabolome of these organisms consists of structurally diverse molecules possessing unprecedented carbon skeletons, the biosynthesis of which occurs via complex metabolomic pathways driven by specialist enzymes. This structural novelty is highly influential on the favourable bioactivity these compounds display. A prominent example of such a compound is trabectedin marketed as Yondelis®. Registered for the treatment of soft tissue sarcomas, this marine drug was developed from extracts of the tunicate Ecteinascidia turbinata. South Africa is renowned for possessing a highly diverse marine biota including several endemic species of marine red algae belonging to the Laurencia sensu stricto genus, which falls within the Laurencia complex. Despite having a good reputation for fascinating secondary metabolites, the taxonomy of Laurencia natural products is proving challenging for reasons including the presence of cryptic species, as well as individual species displaying morphological variability. The aim of this study was thus to isolate secondary metabolites from various South African Laurencia spp. and subsequently assess their chemotaxonomic significance by analysis of a parallel plastid rbcL phylogeny study of Laurencia spp. This study reports the first phycochemical investigation into Laurencia natalensis Kylin, Laurencia cf. corymbosa J.Agardh, Laurencia complanata (Suhr) Kützing, Laurencia sodwaniensis Francis, Bolton, Mattio and Anderson submitted, Laurencia multiclavata Francis, Bolton, Mattio and Anderson submitted, and a South African specimen of Laurenciella marilzae Gil-Rodríguez, Sentíes, Díaz-Larrea, Cassano and M.T. Fujii (basionym: Laurencia marilzae) originally described from Spain. Additionally, the chemical profiles of previously explored species Laurencia flexuosa Kützing and Laurencia glomerata Kützing were re-investigated. The organic extracts of the above species afforded 31 compounds belonging to a wide array of structural classes including halo-chamigranes, linear C15 acetogenins, indole alkaloids, cuparanes and cyclic bromo-ethers. A new tri-cyclic keto-cuparane (4.4) was isolated from L.cf. corymbosa alongside the new cuparanes 4.1 and 4.7. Algoane (5.9), a unique marker compound isolated from L. natalensis, was previously only reported from a sea-hare. Such marker compounds which are exclusive to an individual algal species increase the ease of their subsequent identification. The feasibility of chemotaxonomy as an additional tool to classify Laurencia spp. Was established as broad predictions of a specimen’s phylogeny, based on representatives of its secondary metabolome, proved viable. The study specimens were shown to possess similar chemical profiles to their sister species e.g. L. complanata, L. sodwaniensis and L. multiclavata produced similar metabolites to their sister species as inferred by an rbcL phylogeny tree. Finally, a 1H NMR profiling study on the crude organic extracts of various Laurencia spp. generated distinctive, reproducible spectra, exposing the value of NMR spectroscopy as a rudimentary species discernment tool.
- Full Text:
- Date Issued: 2015
The isolation, genetic characterisation and biological activity of a South African Phthorimaea operculella granulovirus (PhopGV-SA) for the control of the Potato Tuber Moth, Phthorimaea operculella (Zeller)
- Authors: Jukes, Michael David
- Date: 2015
- Subjects: Potato tuberworm , Potatoes -- Diseases and pests -- South Africa , Baculoviruses , Natural pesticides , Biological pest control agents , Potato tuberworm -- Biological control , Restriction enzymes, DNA
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4147 , http://hdl.handle.net/10962/d1017908
- Description: The potato tuber moth, Phthorimaea operculella (Zeller), is a major pest of potato crops worldwide causing significant damage to both field and stored tubers. The current control method in South Africa involves chemical insecticides, however, there is growing concern on the health and environmental risks of their use. The development of novel biopesticide based control methods may offer a potential solution for the future of insecticides. In this study a baculovirus was successfully isolated from a laboratory population of P. operculella. Transmission electron micrographs revealed granulovirus-like particles. DNA was extracted from recovered occlusion bodies and used for the PCR amplification of the lef-8, lef-9, granulin and egt genes. Sequence data was obtained and submitted to BLAST identifying the virus as a South African isolate of Phthorimaea operculella granulovirus (PhopGV-SA). Phylogenetic analysis of the lef-8, lef-9 and granulin amino acid sequences grouped the South African isolate with PhopGV-1346. Comparison of egt sequence data identified PhopGV-SA as a type II egt gene. A phylogenetic analysis of egt amino acid sequences grouped all type II genes, including PhopGV-SA, into a separate clade from types I, III, IV and V. These findings suggest that type II may represent the prototype structure for this gene with the evolution of types I, III and IV a result of large internal deletion events and subsequent divergence. PhopGV-SA was also shown to be genetically more similar to South American isolates (i.e. PhopGV-CHI or PhopGV-INDO) than it is to other African isolates, suggesting that the South African isolate originated from South America. Restriction endonuclease profiles of PhopGV-SA were similar to those of PhopGV-1346 and PhopGV-JLZ9f for the enzymes BamHI, HindIII, NruI and NdeI. A preliminary full genome sequence for PhopGV-SA was determined and compared to PhopGV-136 with some gene variation observed (i.e. odv-e66 and vp91/p95). The biological activity of PhopGV-SA against P. operculella neonate larvae was evaluated with an estimated LC₅₀ of 1.87×10⁸ OBs.ml⁻¹ being determined. This study therefore reports the characterisation of a novel South African PhopGV isolate which could potentially be developed into a biopesticide for the control of P. operculella.
- Full Text:
- Date Issued: 2015
- Authors: Jukes, Michael David
- Date: 2015
- Subjects: Potato tuberworm , Potatoes -- Diseases and pests -- South Africa , Baculoviruses , Natural pesticides , Biological pest control agents , Potato tuberworm -- Biological control , Restriction enzymes, DNA
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4147 , http://hdl.handle.net/10962/d1017908
- Description: The potato tuber moth, Phthorimaea operculella (Zeller), is a major pest of potato crops worldwide causing significant damage to both field and stored tubers. The current control method in South Africa involves chemical insecticides, however, there is growing concern on the health and environmental risks of their use. The development of novel biopesticide based control methods may offer a potential solution for the future of insecticides. In this study a baculovirus was successfully isolated from a laboratory population of P. operculella. Transmission electron micrographs revealed granulovirus-like particles. DNA was extracted from recovered occlusion bodies and used for the PCR amplification of the lef-8, lef-9, granulin and egt genes. Sequence data was obtained and submitted to BLAST identifying the virus as a South African isolate of Phthorimaea operculella granulovirus (PhopGV-SA). Phylogenetic analysis of the lef-8, lef-9 and granulin amino acid sequences grouped the South African isolate with PhopGV-1346. Comparison of egt sequence data identified PhopGV-SA as a type II egt gene. A phylogenetic analysis of egt amino acid sequences grouped all type II genes, including PhopGV-SA, into a separate clade from types I, III, IV and V. These findings suggest that type II may represent the prototype structure for this gene with the evolution of types I, III and IV a result of large internal deletion events and subsequent divergence. PhopGV-SA was also shown to be genetically more similar to South American isolates (i.e. PhopGV-CHI or PhopGV-INDO) than it is to other African isolates, suggesting that the South African isolate originated from South America. Restriction endonuclease profiles of PhopGV-SA were similar to those of PhopGV-1346 and PhopGV-JLZ9f for the enzymes BamHI, HindIII, NruI and NdeI. A preliminary full genome sequence for PhopGV-SA was determined and compared to PhopGV-136 with some gene variation observed (i.e. odv-e66 and vp91/p95). The biological activity of PhopGV-SA against P. operculella neonate larvae was evaluated with an estimated LC₅₀ of 1.87×10⁸ OBs.ml⁻¹ being determined. This study therefore reports the characterisation of a novel South African PhopGV isolate which could potentially be developed into a biopesticide for the control of P. operculella.
- Full Text:
- Date Issued: 2015
The landscape of childhood: play and place as tools to understanding children’s enviromental use and perceptions
- Alexander, Jamie K, Cocks, Michelle L, Shackleton, Charlie M
- Authors: Alexander, Jamie K , Cocks, Michelle L , Shackleton, Charlie M
- Date: 2015
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/141165 , vital:37949 , DOI: 10.1007/s10745-015-9755-z
- Description: Research has shown that children are the greatest users of natural areas and that childhood experiences strongly shape adults’ environmental values. This project was designed to ascertain children’s environmental uses and perceptions in two rural villages in the Eastern Cape, South Africa, utilising children’s use of the environment for play and their sense of place as key focus areas. Several factors influenced children’s environmental use, including safety fears, increased consumption of western media and environmental restrictions imposed by the state, revealing how South Africa’s high level of violence against women and children contributes to gendered environmental use and knowledge, and bringing about concern for children’s cultural identity in an increasingly westernised world.
- Full Text:
- Date Issued: 2015
- Authors: Alexander, Jamie K , Cocks, Michelle L , Shackleton, Charlie M
- Date: 2015
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/141165 , vital:37949 , DOI: 10.1007/s10745-015-9755-z
- Description: Research has shown that children are the greatest users of natural areas and that childhood experiences strongly shape adults’ environmental values. This project was designed to ascertain children’s environmental uses and perceptions in two rural villages in the Eastern Cape, South Africa, utilising children’s use of the environment for play and their sense of place as key focus areas. Several factors influenced children’s environmental use, including safety fears, increased consumption of western media and environmental restrictions imposed by the state, revealing how South Africa’s high level of violence against women and children contributes to gendered environmental use and knowledge, and bringing about concern for children’s cultural identity in an increasingly westernised world.
- Full Text:
- Date Issued: 2015