Reproductive isolation mechanisms of two cryptic species of Eccritotarsus (Hemiptera: Miridae), biological control agents of water hyacinth, Eichhornia crassipes (Martius) Solms-Laubach (Pontederiaceae)
- Authors: Mnguni, Sandiso
- Date: 2019
- Subjects: Eccritotarsus , Meridae , Noxious weeds -- Biological control -- South Africa , Aquatic weeds -- Biological control -- South Africa , Water hyacinth -- Biological control -- South Africa , Biological pest control agents
- Language: English
- Type: text , Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/68133 , vital:29202
- Description: Water hyacinth, Eichhornia crassipes (Martius) Solms-Laubach (Pontederiaceae), is one of the world’s worst alien invasive plants. It is indigenous to the Amazon basin in South America but has become a problematic alien invasive in other parts of the world. As such, several host-specific biological control agents have been sourced from the native distributions in South America and have been released to control this plant where it has become problematic. Two of these agents include the geographically and reproductively isolated cryptic species of Eccritotarsus (Hemiptera: Miridae). One of these species was collected in the upper reaches of the Amazon River in Peru, while the other was collected over 3500km away from that site, in Florianopolis, southern Brazil. These cryptic species were thought to be a single species until recently, when DNA barcoding indicated that they were likely to be two species, and the species status has now been confirmed by interbreeding experiments and detailed morphological studies. The Brazilian population remains Eccritotarsus catarinensis (Carvalho), while the Peruvian population is now known as Eccritotarsus eichhorniae (Henry). The aim of this project was to investigate the mating behaviour and other behavioural traits of the two species that have resulted in reproductive isolation, and which could have led to speciation. In addition, investigations involving analysis of chemical compound compositions of the two species aimed to determine the extent to which the compounds played a role in the development and maintenance of reproductive isolation. To achieve the aims, behavioural-observation experiments were conducted in the form of no-choice, bi-choice and multi-choice tests in 1:1, 2:1 and 3:1 sex ratio assessments, both within and between species. Chemical compound compositions of E. catarinensis and E. eichhorniae were also assessed using Nuclear Magnetic Resonance (NMR), Solid-phase micro-extraction (SPME) and Gas-Chromatography Mass-Spectrometry (GC-MS) techniques. In no-choice experiments, the highest number of single and multiple copula incidences, and average total copula duration was found within species while copulation between species was much rarer. In bi-choice experiments, E. eichhorniae females and E. catarinensis males only chose to mate with their respective conspecifics, and within species copulations continued to have higher average total copula duration. In multi-choice experiments, the highest number of single and multiple copula incidences and average total copula duration was also found within species. GC-MS analysis suggested that E. catarinensis females and E. eichhorniae males have unique chemical compounds missing in their conspecifics and same sex of the other species. Further analysis suggested that E. catarinensis females and E. eichhorniae males have similar chemical compound compositions, whereas as E. eichhorniae females and E. catarinensis males have similar chemical compound compositions. These results suggest that there are behavioural differences that led to the development and maintenance of prezygotic reproductive isolation mechanisms, and that this is probably driven by pheromones in chemical compound compositions. These two species were geographically isolated in the native range and the populations have diverged to the point that they are now reproductively incompatible and therefore, distinct species. The main driver of the speciation is most likely mate recognition and attraction, as only reproductively important traits such as pheromones, genitalia, the scent glands and antennae have changed, while other traits, including host range and morphology, have remained remarkably stable. This provides evidence that differences in sexual selection in isolated populations may be important drivers of speciation and reproductive isolation in cryptic species.
- Full Text:
- Date Issued: 2019
- Authors: Mnguni, Sandiso
- Date: 2019
- Subjects: Eccritotarsus , Meridae , Noxious weeds -- Biological control -- South Africa , Aquatic weeds -- Biological control -- South Africa , Water hyacinth -- Biological control -- South Africa , Biological pest control agents
- Language: English
- Type: text , Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/68133 , vital:29202
- Description: Water hyacinth, Eichhornia crassipes (Martius) Solms-Laubach (Pontederiaceae), is one of the world’s worst alien invasive plants. It is indigenous to the Amazon basin in South America but has become a problematic alien invasive in other parts of the world. As such, several host-specific biological control agents have been sourced from the native distributions in South America and have been released to control this plant where it has become problematic. Two of these agents include the geographically and reproductively isolated cryptic species of Eccritotarsus (Hemiptera: Miridae). One of these species was collected in the upper reaches of the Amazon River in Peru, while the other was collected over 3500km away from that site, in Florianopolis, southern Brazil. These cryptic species were thought to be a single species until recently, when DNA barcoding indicated that they were likely to be two species, and the species status has now been confirmed by interbreeding experiments and detailed morphological studies. The Brazilian population remains Eccritotarsus catarinensis (Carvalho), while the Peruvian population is now known as Eccritotarsus eichhorniae (Henry). The aim of this project was to investigate the mating behaviour and other behavioural traits of the two species that have resulted in reproductive isolation, and which could have led to speciation. In addition, investigations involving analysis of chemical compound compositions of the two species aimed to determine the extent to which the compounds played a role in the development and maintenance of reproductive isolation. To achieve the aims, behavioural-observation experiments were conducted in the form of no-choice, bi-choice and multi-choice tests in 1:1, 2:1 and 3:1 sex ratio assessments, both within and between species. Chemical compound compositions of E. catarinensis and E. eichhorniae were also assessed using Nuclear Magnetic Resonance (NMR), Solid-phase micro-extraction (SPME) and Gas-Chromatography Mass-Spectrometry (GC-MS) techniques. In no-choice experiments, the highest number of single and multiple copula incidences, and average total copula duration was found within species while copulation between species was much rarer. In bi-choice experiments, E. eichhorniae females and E. catarinensis males only chose to mate with their respective conspecifics, and within species copulations continued to have higher average total copula duration. In multi-choice experiments, the highest number of single and multiple copula incidences and average total copula duration was also found within species. GC-MS analysis suggested that E. catarinensis females and E. eichhorniae males have unique chemical compounds missing in their conspecifics and same sex of the other species. Further analysis suggested that E. catarinensis females and E. eichhorniae males have similar chemical compound compositions, whereas as E. eichhorniae females and E. catarinensis males have similar chemical compound compositions. These results suggest that there are behavioural differences that led to the development and maintenance of prezygotic reproductive isolation mechanisms, and that this is probably driven by pheromones in chemical compound compositions. These two species were geographically isolated in the native range and the populations have diverged to the point that they are now reproductively incompatible and therefore, distinct species. The main driver of the speciation is most likely mate recognition and attraction, as only reproductively important traits such as pheromones, genitalia, the scent glands and antennae have changed, while other traits, including host range and morphology, have remained remarkably stable. This provides evidence that differences in sexual selection in isolated populations may be important drivers of speciation and reproductive isolation in cryptic species.
- Full Text:
- Date Issued: 2019
Research for the people, by the people: The political practice of cognitive justice and transformative learning in environmental social movements
- Authors: Burt, Jane C
- Date: 2019
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/392177 , vital:68728 , xlink:href="https://doi.org/10.3390/su11205611"
- Description: This paper describes how Changing Practice courses, developed by environmental activists in South Africa and based on social learning practice, have seeded cognitive justice action. For the educator-activists who facilitated these courses, it became apparent that we needed a bold emancipatory pedagogy which included cognitive justice issues. This enabled us and the activist-researcher participants to understand the extent to which local, indigenous, and spiritual knowledge had been excluded from water governance. The paper investigates how participants in the ‘Water and Tradition’ change project, established by the Vaal Environmental Justice Alliance (VEJA, engaged with cognitive justice, to demonstrate how African spiritual practice offers a re-visioning of the natural world. Finally, using the tools of critical realist theory, the paper reviews how VEJA bring about transformative social action through their participation in the Changing Practice course.
- Full Text:
- Date Issued: 2019
- Authors: Burt, Jane C
- Date: 2019
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/392177 , vital:68728 , xlink:href="https://doi.org/10.3390/su11205611"
- Description: This paper describes how Changing Practice courses, developed by environmental activists in South Africa and based on social learning practice, have seeded cognitive justice action. For the educator-activists who facilitated these courses, it became apparent that we needed a bold emancipatory pedagogy which included cognitive justice issues. This enabled us and the activist-researcher participants to understand the extent to which local, indigenous, and spiritual knowledge had been excluded from water governance. The paper investigates how participants in the ‘Water and Tradition’ change project, established by the Vaal Environmental Justice Alliance (VEJA, engaged with cognitive justice, to demonstrate how African spiritual practice offers a re-visioning of the natural world. Finally, using the tools of critical realist theory, the paper reviews how VEJA bring about transformative social action through their participation in the Changing Practice course.
- Full Text:
- Date Issued: 2019
Residents’ perspective of Nelson Mandela Bay as a sustainable city
- Authors: Calitz, Martin
- Date: 2019
- Subjects: Sustainable urban development -- South Africa -- Nelson Mandela Bay Municipality , Sustainable development -- South Africa -- Nelson Mandela Bay Municipality Urban renewal -- South Africa -- Nelson Mandela Bay Municipality City planning -- South Africa -- Nelson Mandela Bay Municipality
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/37128 , vital:34120
- Description: Currently, environmental issues have firmly entrenched itself at the centre of the world stage with regard to all spheres of development activity. This has been exemplified by the number of global and national agendas and international conferences, which are being held concerning the environment. This began with the Rio de Janeiro Earth Summit in 1992, which evolved into the current relentless environmental campaigns across the world from developed to developing nations. This was followed by the World Summit on Sustainable Development (WSSD), which was held in Johannesburg, South Africa in 2002, which defined critical targets for sustainable development, including the Millennium Development Goals (MDGs). These campaigns have become critical in response to the alarming rate at which human activities are affecting the environment. Africa is experiencing one of the fastest rates of urbanisation in the world, with sub-Saharan Africa leading the way. In 2009, there were more than 395 million Africans living in urban areas, which equates to approximately 40% of the continent’s population. The African population number is estimated to triple to more than 1.2 billion people, with an expected 60% of all Africans to reside in urban areas by 2050. The United Nations Human Settlements’ Programme identified that this rapid growth presents two major challenges. First, providing African cities with the ability to better harness their productive potential and secondly, assisting African cities with the ability to better serve the increased demands for municipal services and decent housing. The unique situation that makes Africa different from other global urban migrations is the speed this urban migration process is following. 1994 marked a significant change for politics in South Africa. It provided the new administrative South African government the opportunity to position South Africa on a path towards becoming Africa’s first recognised sustainable country. In 1994, the South African government amended the constitutional objective to align local government with focusing on securing ecological sustainable development and making use of natural resources, while promoting justifiable economic and social development. In support of this constitutional objective, the National Environmental Management Act (NEMA) No. 107 of 1998, established cooperative governance principles, institutional mechanisms and sustainable development tools needed to promote environmental sustainability
- Full Text:
- Date Issued: 2019
- Authors: Calitz, Martin
- Date: 2019
- Subjects: Sustainable urban development -- South Africa -- Nelson Mandela Bay Municipality , Sustainable development -- South Africa -- Nelson Mandela Bay Municipality Urban renewal -- South Africa -- Nelson Mandela Bay Municipality City planning -- South Africa -- Nelson Mandela Bay Municipality
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/37128 , vital:34120
- Description: Currently, environmental issues have firmly entrenched itself at the centre of the world stage with regard to all spheres of development activity. This has been exemplified by the number of global and national agendas and international conferences, which are being held concerning the environment. This began with the Rio de Janeiro Earth Summit in 1992, which evolved into the current relentless environmental campaigns across the world from developed to developing nations. This was followed by the World Summit on Sustainable Development (WSSD), which was held in Johannesburg, South Africa in 2002, which defined critical targets for sustainable development, including the Millennium Development Goals (MDGs). These campaigns have become critical in response to the alarming rate at which human activities are affecting the environment. Africa is experiencing one of the fastest rates of urbanisation in the world, with sub-Saharan Africa leading the way. In 2009, there were more than 395 million Africans living in urban areas, which equates to approximately 40% of the continent’s population. The African population number is estimated to triple to more than 1.2 billion people, with an expected 60% of all Africans to reside in urban areas by 2050. The United Nations Human Settlements’ Programme identified that this rapid growth presents two major challenges. First, providing African cities with the ability to better harness their productive potential and secondly, assisting African cities with the ability to better serve the increased demands for municipal services and decent housing. The unique situation that makes Africa different from other global urban migrations is the speed this urban migration process is following. 1994 marked a significant change for politics in South Africa. It provided the new administrative South African government the opportunity to position South Africa on a path towards becoming Africa’s first recognised sustainable country. In 1994, the South African government amended the constitutional objective to align local government with focusing on securing ecological sustainable development and making use of natural resources, while promoting justifiable economic and social development. In support of this constitutional objective, the National Environmental Management Act (NEMA) No. 107 of 1998, established cooperative governance principles, institutional mechanisms and sustainable development tools needed to promote environmental sustainability
- Full Text:
- Date Issued: 2019
Residents’ perspectives on township tourism in Mondesa, Swakopmund, Namibia
- Auala, Lovisa Sisco Ndapanda
- Authors: Auala, Lovisa Sisco Ndapanda
- Date: 2019
- Subjects: Tourism — Namibia
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10948/42448 , vital:36661
- Description: Township tourism is regarded as one of the fastest growing tourist activities in Namibia (Buning, Legant, Schauwinhold, Steinbrink & Subenguth, 2016:14). This research study presents an exploratory inquiry that seeks an in-depth understanding of residents’perspectives on township tourism in Mondesa, Swakopmund, Namibia.In order to conceptualise the extent to which the residents’needs are being met through the benefits derived from township tourism. The residents’ perspectives on township tourism in Mondesa areexplored with respect to the benefits and costs derived from township tourism, participation in township tourism, and interaction with tourist during a township tour and consultation on township tourismwhich forms part of the research questions ofthe study. By applying the Social Exchange Theory (SET) in this study, the relationships between the variables that influence the residents perceived benefit and costs of township tourism in Mondesa are explored further in depth in combination with Pretty’s Typology of participation and Scheyne’s typology of community empowerment in tourism (Ap, 1992: 668; Mason, 2003:119; Sharpley and Telfer, 2002:152;Cooper, Fletcher, Gilbert & Wanhill, 1993:91).These variables are namely; social, economic, psychological, environmental, cultural, Manipulative, passive, educational and political factors. They form part of the conceptual framework of the study.This study followed a qualitative research approachandmultiple data sources were collected including semi-structured interviews with residents from Mondesa:these included residents involved in township tourism and those not involved in township tourism. To triangulate the data collection, semi-structured interviews were conducted with representatives from tourism industry and government bodies related to townshiptourism. Data analysis was done through the facilitation of Atlas tiaqualitative data analysis software and deductive codes were established from the literature(variables from the conceptual framework)and themes were developed from the research questions.The findings indicate that residents who are not involved in township tourism arenot influenced by the benefit and cost equation of the social exchange theory (Andriotis, 2005:69). Therefore residents not involved in township tourism are positive about tourism irrespective of whether they benefit directly from financial gain through tourism. The findingsfurtheremphasis oncommunity benefitsfrom township tourism being as important, than individual benefits. This study also provides knowledge that meaningful interaction between tourist and residents has the ability to reduce the apartheid paradigm of racial division and discrimination, which was the basis of the formation of townships.Residents’ misconception about white people are changed due to their personal interaction and cultural exchange with white tourist during a township tour. Anothersignificant findings to emerge from this study is the ability for township tourism to transform the lives of residents living in townships through the intrinsic benefits derived from township tourism. Township tourism has the ability to contribute to positive human exchange through interaction between residents and tourists. By sharing a positive cultural exchange, strong relationships are built between the tourists and residents, which may provide long term sustainability of township tourism. The positive personal transformational effect on residents through interaction with tourists is contributing to residents’ socio-economic well-being. Therefore township tourism has the ability to quantitatively and qualitatively address the alleviationof poverty in townshipsand fostering understanding and mutual respect among peoples of the world.The studyconcluded with a framework of guidelines toaid key stakeholders in the development and planning of township tourism and encourages the practice of sustainable tourism in townships.
- Full Text:
- Date Issued: 2019
- Authors: Auala, Lovisa Sisco Ndapanda
- Date: 2019
- Subjects: Tourism — Namibia
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10948/42448 , vital:36661
- Description: Township tourism is regarded as one of the fastest growing tourist activities in Namibia (Buning, Legant, Schauwinhold, Steinbrink & Subenguth, 2016:14). This research study presents an exploratory inquiry that seeks an in-depth understanding of residents’perspectives on township tourism in Mondesa, Swakopmund, Namibia.In order to conceptualise the extent to which the residents’needs are being met through the benefits derived from township tourism. The residents’ perspectives on township tourism in Mondesa areexplored with respect to the benefits and costs derived from township tourism, participation in township tourism, and interaction with tourist during a township tour and consultation on township tourismwhich forms part of the research questions ofthe study. By applying the Social Exchange Theory (SET) in this study, the relationships between the variables that influence the residents perceived benefit and costs of township tourism in Mondesa are explored further in depth in combination with Pretty’s Typology of participation and Scheyne’s typology of community empowerment in tourism (Ap, 1992: 668; Mason, 2003:119; Sharpley and Telfer, 2002:152;Cooper, Fletcher, Gilbert & Wanhill, 1993:91).These variables are namely; social, economic, psychological, environmental, cultural, Manipulative, passive, educational and political factors. They form part of the conceptual framework of the study.This study followed a qualitative research approachandmultiple data sources were collected including semi-structured interviews with residents from Mondesa:these included residents involved in township tourism and those not involved in township tourism. To triangulate the data collection, semi-structured interviews were conducted with representatives from tourism industry and government bodies related to townshiptourism. Data analysis was done through the facilitation of Atlas tiaqualitative data analysis software and deductive codes were established from the literature(variables from the conceptual framework)and themes were developed from the research questions.The findings indicate that residents who are not involved in township tourism arenot influenced by the benefit and cost equation of the social exchange theory (Andriotis, 2005:69). Therefore residents not involved in township tourism are positive about tourism irrespective of whether they benefit directly from financial gain through tourism. The findingsfurtheremphasis oncommunity benefitsfrom township tourism being as important, than individual benefits. This study also provides knowledge that meaningful interaction between tourist and residents has the ability to reduce the apartheid paradigm of racial division and discrimination, which was the basis of the formation of townships.Residents’ misconception about white people are changed due to their personal interaction and cultural exchange with white tourist during a township tour. Anothersignificant findings to emerge from this study is the ability for township tourism to transform the lives of residents living in townships through the intrinsic benefits derived from township tourism. Township tourism has the ability to contribute to positive human exchange through interaction between residents and tourists. By sharing a positive cultural exchange, strong relationships are built between the tourists and residents, which may provide long term sustainability of township tourism. The positive personal transformational effect on residents through interaction with tourists is contributing to residents’ socio-economic well-being. Therefore township tourism has the ability to quantitatively and qualitatively address the alleviationof poverty in townshipsand fostering understanding and mutual respect among peoples of the world.The studyconcluded with a framework of guidelines toaid key stakeholders in the development and planning of township tourism and encourages the practice of sustainable tourism in townships.
- Full Text:
- Date Issued: 2019
Resilience towards adverse childhood experiences among public secondary school students in Alice, South Africa
- Authors: Obisesan , Matthew Tobiloba
- Date: 2019
- Subjects: Child development Child psychology
- Language: English
- Type: Thesis , Masters , MPH
- Identifier: http://hdl.handle.net/10353/16769 , vital:40772
- Description: Adverse childhood experiences (ACEs) are of great concerns in public health. They are traumatic experiences that occur during childhood. ACEs include various forms of abuse and maltreatment which can be emotional, physical, verbal and sexual, different degrees of household dysfunction such as growing up with substance abuse like drugs and alcohol, witnessing domestic violence, mental illnesses, crime in the home and parental disharmony. Although childhood adversities and traumatic experiences occur before the individual is 18 years of age, the effects of such experiences can last a lifetime causing mental and chronic medical illnesses. Resilience is perceived as an antidote to the detrimental effect of ACEs. It is a situation in which an individual displays a high level of effectiveness after a significant misfortune or adversity. This study was conducted to assess the level of resilience towards adverse childhood experiences among public secondary school children in Alice. Data were collected with the aid of a wellstructured questionnaire from 418 public high school students using Convenience sampling method. Factors influencing resilience among the learners were examined. Consequently, the data collected were analyzed using descriptive statistics and ordered logit regression model. From the results, it is observed that the majority of the learners live with their grandparents and the most prevalent form of ACEs is emotional abuse, followed by sexual abuse while community violence is the least common childhood adversity. This study further reveals that some of the respondents experienced more than one form of adverse childhood experience. In addition, irrespective of what the students have been through, they are largely observed to be resilient. Analysis from the ordered logit regression model shows that age, class in school, gender, religion, race and who the student lives with are significantly related to resilience. The study, therefore, recommends a functional counseling unit in the schools while student-teacher relationship must be encouraged
- Full Text:
- Date Issued: 2019
- Authors: Obisesan , Matthew Tobiloba
- Date: 2019
- Subjects: Child development Child psychology
- Language: English
- Type: Thesis , Masters , MPH
- Identifier: http://hdl.handle.net/10353/16769 , vital:40772
- Description: Adverse childhood experiences (ACEs) are of great concerns in public health. They are traumatic experiences that occur during childhood. ACEs include various forms of abuse and maltreatment which can be emotional, physical, verbal and sexual, different degrees of household dysfunction such as growing up with substance abuse like drugs and alcohol, witnessing domestic violence, mental illnesses, crime in the home and parental disharmony. Although childhood adversities and traumatic experiences occur before the individual is 18 years of age, the effects of such experiences can last a lifetime causing mental and chronic medical illnesses. Resilience is perceived as an antidote to the detrimental effect of ACEs. It is a situation in which an individual displays a high level of effectiveness after a significant misfortune or adversity. This study was conducted to assess the level of resilience towards adverse childhood experiences among public secondary school children in Alice. Data were collected with the aid of a wellstructured questionnaire from 418 public high school students using Convenience sampling method. Factors influencing resilience among the learners were examined. Consequently, the data collected were analyzed using descriptive statistics and ordered logit regression model. From the results, it is observed that the majority of the learners live with their grandparents and the most prevalent form of ACEs is emotional abuse, followed by sexual abuse while community violence is the least common childhood adversity. This study further reveals that some of the respondents experienced more than one form of adverse childhood experience. In addition, irrespective of what the students have been through, they are largely observed to be resilient. Analysis from the ordered logit regression model shows that age, class in school, gender, religion, race and who the student lives with are significantly related to resilience. The study, therefore, recommends a functional counseling unit in the schools while student-teacher relationship must be encouraged
- Full Text:
- Date Issued: 2019
Resistance: revealing and exposing the constructions of societal control
- Authors: Vaghmaria, Nishil Rishik
- Date: 2019
- Subjects: Art, Modern -- 21st century -- Research , Aesthetics Artists -- South Africa -- Exhibitions
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: http://hdl.handle.net/10948/43710 , vital:37035
- Description: This practice based visual arts investigation was triggered by the researcher’s social understandings and personal concern about societal control on the individual, and his resistance to the negative effects of consumerism and capitalism. Through this research project he aims to reveal and expose the workings of those systems of control visually. He pays particular attention to our current global, cultural and socio-political, economic order and the limitations that are imposed on the individual in terms of freedom of choice and expression, and through both the written work and the practical work he aims to influence a revolution of the mind and to encourage critical consciousness and awareness on the part of its audience regarding how individuals are manipulated, distracted and seduced into conformity. As an outcome of his research, and of his intention to act as an agent for socially aware creative practice, he presents a tentative framework for the use of emerging, socially conscious artists and educators. The practical component of this study is focused around the creation and display of graffiti-influenced images in both public and gallery spaces. The researcher makes extensive use of the SI’s subversive artistic technique of Détournement as he engages with the notion of ‘distraction’. This project, with its dual focus on text and on the creation of artworks in both public and gallery spaces, is intended as a contribution to the search for new critical understandings and diagnostic terminologies around social control.
- Full Text:
- Date Issued: 2019
- Authors: Vaghmaria, Nishil Rishik
- Date: 2019
- Subjects: Art, Modern -- 21st century -- Research , Aesthetics Artists -- South Africa -- Exhibitions
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: http://hdl.handle.net/10948/43710 , vital:37035
- Description: This practice based visual arts investigation was triggered by the researcher’s social understandings and personal concern about societal control on the individual, and his resistance to the negative effects of consumerism and capitalism. Through this research project he aims to reveal and expose the workings of those systems of control visually. He pays particular attention to our current global, cultural and socio-political, economic order and the limitations that are imposed on the individual in terms of freedom of choice and expression, and through both the written work and the practical work he aims to influence a revolution of the mind and to encourage critical consciousness and awareness on the part of its audience regarding how individuals are manipulated, distracted and seduced into conformity. As an outcome of his research, and of his intention to act as an agent for socially aware creative practice, he presents a tentative framework for the use of emerging, socially conscious artists and educators. The practical component of this study is focused around the creation and display of graffiti-influenced images in both public and gallery spaces. The researcher makes extensive use of the SI’s subversive artistic technique of Détournement as he engages with the notion of ‘distraction’. This project, with its dual focus on text and on the creation of artworks in both public and gallery spaces, is intended as a contribution to the search for new critical understandings and diagnostic terminologies around social control.
- Full Text:
- Date Issued: 2019
Responding to iconic images of risk through reflexive and narrative enquiry represented in a stratified text for environmental education readers
- Authors: Murphy, Mary
- Date: 2019
- Subjects: Sustainability -- Study and teaching , Environmental education -- Philosophy , Environmental degradation -- Study and teaching , Environmental degradation -- Philosophy , Reflection (Philosophy) , Archer, Margaret S (Margaret Scotford). Structure, agency, and the internal conversation
- Language: English
- Type: text , Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10962/96768 , vital:31318
- Description: This thesis presents a stratified textual strategy to represent meaning developed through reflexive and narrative enquiry of environmental risk. Meaning that emerged in responses to iconic images of risk. Umberto Eco cautioned that iconic images over time become conventional taking over from that which they represent. Representations of risk become embedded through cultural coding. Semiotic theory provided access to the contextual and cultural content of environmental education as experienced during professional work as a radio presenter of “Environmental Matters”, as an environmental educator and activist. Methodological rigour was applied through the application of Margaret Archer's theory of the internal conversation and use of an online content management system. Both the reflexive tool of the internal conversation and the textual mechanism of the blog encouraged commitment to Paul Hart's criteria of trustworthiness and authenticity in the process of building the semiotic structure of the PhD. The Internal Conversation was used as a mediating tool in the PhD process and is presented in practice. Rethinking environmental risk from other species' perspectives through imagined experience was achieved through narrative enquiry. A noted anthropocentric limitation of the inability to interview animals for their experience of human-imposed risk was mitigated through representing the imagined, possible perspectives through story, which invites the reader to join the meaning-making process and open up discussions for and about environmental issues and action. This noted anthropocentrism was evident in debates among the characters about violence and non-violence as a conditioned theme and topic discussed in previous academic research about terrorism in divided societies. The story illustrates how the main character, a penguin called Polo, navigates through emerging meaning within a structure that confronts him with choices that end with a decision to become an agent for change. This story is a narrative example of the morphogenetic process. The multi-textual strategy presents possible methods for the exploration of risk (Vol. 1), reflexivity (Vol. 2) and representation (Vol. 3) for the application and contribution in/to environmental education.
- Full Text:
- Date Issued: 2019
- Authors: Murphy, Mary
- Date: 2019
- Subjects: Sustainability -- Study and teaching , Environmental education -- Philosophy , Environmental degradation -- Study and teaching , Environmental degradation -- Philosophy , Reflection (Philosophy) , Archer, Margaret S (Margaret Scotford). Structure, agency, and the internal conversation
- Language: English
- Type: text , Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10962/96768 , vital:31318
- Description: This thesis presents a stratified textual strategy to represent meaning developed through reflexive and narrative enquiry of environmental risk. Meaning that emerged in responses to iconic images of risk. Umberto Eco cautioned that iconic images over time become conventional taking over from that which they represent. Representations of risk become embedded through cultural coding. Semiotic theory provided access to the contextual and cultural content of environmental education as experienced during professional work as a radio presenter of “Environmental Matters”, as an environmental educator and activist. Methodological rigour was applied through the application of Margaret Archer's theory of the internal conversation and use of an online content management system. Both the reflexive tool of the internal conversation and the textual mechanism of the blog encouraged commitment to Paul Hart's criteria of trustworthiness and authenticity in the process of building the semiotic structure of the PhD. The Internal Conversation was used as a mediating tool in the PhD process and is presented in practice. Rethinking environmental risk from other species' perspectives through imagined experience was achieved through narrative enquiry. A noted anthropocentric limitation of the inability to interview animals for their experience of human-imposed risk was mitigated through representing the imagined, possible perspectives through story, which invites the reader to join the meaning-making process and open up discussions for and about environmental issues and action. This noted anthropocentrism was evident in debates among the characters about violence and non-violence as a conditioned theme and topic discussed in previous academic research about terrorism in divided societies. The story illustrates how the main character, a penguin called Polo, navigates through emerging meaning within a structure that confronts him with choices that end with a decision to become an agent for change. This story is a narrative example of the morphogenetic process. The multi-textual strategy presents possible methods for the exploration of risk (Vol. 1), reflexivity (Vol. 2) and representation (Vol. 3) for the application and contribution in/to environmental education.
- Full Text:
- Date Issued: 2019
Response of black wildebeest, a specialised grazer, to grass availability
- Authors: Barnardo, Toshka
- Date: 2019
- Subjects: Grasslands -- Research -- South Africa , Grassland ecology -- Research -- South Africa Food habits -- Research -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/30876 , vital:31192
- Description: The black wildebeest Connochaetes gnou, a southern African endemic largely confined to the Grassland biome, was used as a model species to assess the response of a specialised grazer to grass availability, as an indicator of habitat quality. The occurrence of animals in low-quality habitats may have detrimental effects on population performance and persistence. Robust techniques are therefore required to assess the response of animals to varying habitat quality, to ensure sustainability of populations and species. Black wildebeest habitat use was assessed in relation to grass availability and visibility, and faecal analysis was used to estimate variation in diet composition and quality, parasite loads, and faecal pellet dimensions, across a grass gradient. Grass consumption, diet quality, and faecal pellet size and weight of black wildebeest increased with increasing grass availability. While black wildebeest consumed up to 55% browse at grass-poor sites, they consistently preferred grasses, potentially resulting in an increased intake of low-quality grasses at grass-poor sites. This, combined with the increased intake of indigestible fibres in browse, may explain the observed trends in diet quality, which in turn may explain variation in faecal pellet size and weight (indicators of body size and weight). Furthermore, black wildebeest population trends within the study area suggest that populations in grass-poor habitats, outside their natural distribution range, may exhibit reduced population performance. These findings suggest that grass availability may be a useful indicator of habitat quality for specialised grazers. The study also provided an opportunity to explore the utility of various diet assessment techniques for estimating herbivore diet composition and quality. Caution should be applied when interpreting and comparing estimates of diet composition and quality that were estimated using different techniques, because different techniques may yield different diet estimates. The study also suggests that black wildebeest may switch to C3 grasses in the winter (as indicated by isotope analysis).
- Full Text:
- Date Issued: 2019
- Authors: Barnardo, Toshka
- Date: 2019
- Subjects: Grasslands -- Research -- South Africa , Grassland ecology -- Research -- South Africa Food habits -- Research -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/30876 , vital:31192
- Description: The black wildebeest Connochaetes gnou, a southern African endemic largely confined to the Grassland biome, was used as a model species to assess the response of a specialised grazer to grass availability, as an indicator of habitat quality. The occurrence of animals in low-quality habitats may have detrimental effects on population performance and persistence. Robust techniques are therefore required to assess the response of animals to varying habitat quality, to ensure sustainability of populations and species. Black wildebeest habitat use was assessed in relation to grass availability and visibility, and faecal analysis was used to estimate variation in diet composition and quality, parasite loads, and faecal pellet dimensions, across a grass gradient. Grass consumption, diet quality, and faecal pellet size and weight of black wildebeest increased with increasing grass availability. While black wildebeest consumed up to 55% browse at grass-poor sites, they consistently preferred grasses, potentially resulting in an increased intake of low-quality grasses at grass-poor sites. This, combined with the increased intake of indigestible fibres in browse, may explain the observed trends in diet quality, which in turn may explain variation in faecal pellet size and weight (indicators of body size and weight). Furthermore, black wildebeest population trends within the study area suggest that populations in grass-poor habitats, outside their natural distribution range, may exhibit reduced population performance. These findings suggest that grass availability may be a useful indicator of habitat quality for specialised grazers. The study also provided an opportunity to explore the utility of various diet assessment techniques for estimating herbivore diet composition and quality. Caution should be applied when interpreting and comparing estimates of diet composition and quality that were estimated using different techniques, because different techniques may yield different diet estimates. The study also suggests that black wildebeest may switch to C3 grasses in the winter (as indicated by isotope analysis).
- Full Text:
- Date Issued: 2019
Retail pharmacists’ perceptions of factors influencing the viability of practice and business in Johannesburg, Gauteng province
- Gazi, Nondumiso Sybil, Knoesen, BC
- Authors: Gazi, Nondumiso Sybil , Knoesen, BC
- Date: 2019
- Subjects: Pharmacists -- South Africa -- Johannesburg , Pharmaceutical services -- South Africa -- Johannesburg -- Management Pharmacy management -- South Africa -- Johannesburg
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/39774 , vital:35454
- Description: The practice of retail pharmacy has become burdened with service limitations directly or indirectly resulting from influences across the landscape. Influences ranging from legislative bodies to financing bodies have created pressure on retail pharmacies resulting in diminishing numbers of these health establishments. Legislative amendments relating to the ownership of pharmacies, pricing and pharmacy personnel training have had a profound effect on the pharmacy landscape as it presents to date. The dual role, (medicinal procurer and pharmaceutical caregiver), required of retail pharmacists, poses ethical and practical implications. These implications may directly affect the sustainability of retail pharmacy practice. The aim of this study was to establish the ways in which the pharmacy model is changing and how that change has been perceived by retail pharmacists in Johannesburg, Gauteng. The research design was qualitative, exploratory, descriptive and contextual in nature. The method utilised for gathering data was individual interviews with pharmacists practising as independent retail pharmacists. At least six (6) independent pharmacists who met the inclusion criteria were approached to participate in the research. Interviews continued until data saturation had been achieved. Data analysis of the transcribed interviews was performed to identify themes and sub-themes.
- Full Text:
- Date Issued: 2019
- Authors: Gazi, Nondumiso Sybil , Knoesen, BC
- Date: 2019
- Subjects: Pharmacists -- South Africa -- Johannesburg , Pharmaceutical services -- South Africa -- Johannesburg -- Management Pharmacy management -- South Africa -- Johannesburg
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/39774 , vital:35454
- Description: The practice of retail pharmacy has become burdened with service limitations directly or indirectly resulting from influences across the landscape. Influences ranging from legislative bodies to financing bodies have created pressure on retail pharmacies resulting in diminishing numbers of these health establishments. Legislative amendments relating to the ownership of pharmacies, pricing and pharmacy personnel training have had a profound effect on the pharmacy landscape as it presents to date. The dual role, (medicinal procurer and pharmaceutical caregiver), required of retail pharmacists, poses ethical and practical implications. These implications may directly affect the sustainability of retail pharmacy practice. The aim of this study was to establish the ways in which the pharmacy model is changing and how that change has been perceived by retail pharmacists in Johannesburg, Gauteng. The research design was qualitative, exploratory, descriptive and contextual in nature. The method utilised for gathering data was individual interviews with pharmacists practising as independent retail pharmacists. At least six (6) independent pharmacists who met the inclusion criteria were approached to participate in the research. Interviews continued until data saturation had been achieved. Data analysis of the transcribed interviews was performed to identify themes and sub-themes.
- Full Text:
- Date Issued: 2019
Retailers’ food waste management: challenges and potential for action in Port Elizabeth
- Authors: Đào, Thị Anh Thư
- Date: 2019
- Subjects: Food industry and trade -- Waste minimization , Food industry and trade -- Waste disposal Refuse and refuse disposal
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/39359 , vital:35220
- Description: Food waste management within retailers is seen as an important solution to assist retailers in effectively managing food waste, and by doing so improving food security while limiting negative ecological consequences. Given the lack of research attention focusing on the importance of managing food waste among South African food retailers, and in particular the Eastern Cape, the primary objective of this research was to investigate retailers‟ food waste management in Port Elizabeth. Primary data was collected by conducting interviews with representatives of Port-Elizabeth-based participating stores and their individual Head Offices. This treatise reports on the findings and the conclusions drawn.
- Full Text:
- Date Issued: 2019
- Authors: Đào, Thị Anh Thư
- Date: 2019
- Subjects: Food industry and trade -- Waste minimization , Food industry and trade -- Waste disposal Refuse and refuse disposal
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/39359 , vital:35220
- Description: Food waste management within retailers is seen as an important solution to assist retailers in effectively managing food waste, and by doing so improving food security while limiting negative ecological consequences. Given the lack of research attention focusing on the importance of managing food waste among South African food retailers, and in particular the Eastern Cape, the primary objective of this research was to investigate retailers‟ food waste management in Port Elizabeth. Primary data was collected by conducting interviews with representatives of Port-Elizabeth-based participating stores and their individual Head Offices. This treatise reports on the findings and the conclusions drawn.
- Full Text:
- Date Issued: 2019
Rethinking ICT4D Impact Assessments: reflections from the Siyakhula Living Lab in South Africa
- Mthoko, Hafeni, Khene, Caroline
- Authors: Mthoko, Hafeni , Khene, Caroline
- Date: 2019
- Language: English
- Type: text , conference paper
- Identifier: http://hdl.handle.net/10962/105286 , vital:32495 , https://doi.org/10.1007/978-3-030-11235-6_4
- Description: The approach to outcome and impact assessments of ICTD has often relied solely on identifying project effects in relation to project baseline data; however, such an approach limits the potential learning that could be occurring throughout a project’s lifecycle. Impact assessments should be conducted in a comprehensive manner, taking into account the evaluation data that has been captured from the initiation of the project through to its implementation, and beyond. This study sought to reflect on the implementation of an impact assessment framework that is based on a comprehensive approach to evaluation. The framework was implemented in the Siyakhula Living Lab to assess for its outcomes and impacts on the community. A pragmatic approach was applied through a reflective process, to assess the utility of the framework within this context. Semi-structured interviews with project stakeholders were conducted to further gain insight into the comprehensive approach to conducting impact assessments. It was found that a comprehensive approach to assessing impacts provided a meaningful way to understand the effects of the ICTD initiative, and provided an overview of project areas that required improvement. However, it was found that the proposed assessment framework required a customisation component in order to modify it to better suit the project context. The way in which future impact assessments are conducted can draw on the lessons gained from following a more comprehensive approach to evaluation, and thus improve learning over time.
- Full Text: false
- Date Issued: 2019
- Authors: Mthoko, Hafeni , Khene, Caroline
- Date: 2019
- Language: English
- Type: text , conference paper
- Identifier: http://hdl.handle.net/10962/105286 , vital:32495 , https://doi.org/10.1007/978-3-030-11235-6_4
- Description: The approach to outcome and impact assessments of ICTD has often relied solely on identifying project effects in relation to project baseline data; however, such an approach limits the potential learning that could be occurring throughout a project’s lifecycle. Impact assessments should be conducted in a comprehensive manner, taking into account the evaluation data that has been captured from the initiation of the project through to its implementation, and beyond. This study sought to reflect on the implementation of an impact assessment framework that is based on a comprehensive approach to evaluation. The framework was implemented in the Siyakhula Living Lab to assess for its outcomes and impacts on the community. A pragmatic approach was applied through a reflective process, to assess the utility of the framework within this context. Semi-structured interviews with project stakeholders were conducted to further gain insight into the comprehensive approach to conducting impact assessments. It was found that a comprehensive approach to assessing impacts provided a meaningful way to understand the effects of the ICTD initiative, and provided an overview of project areas that required improvement. However, it was found that the proposed assessment framework required a customisation component in order to modify it to better suit the project context. The way in which future impact assessments are conducted can draw on the lessons gained from following a more comprehensive approach to evaluation, and thus improve learning over time.
- Full Text: false
- Date Issued: 2019
Rethinking the dialectics of rural and urban in African art and scholarship:
- Siegenthaler, Fiona, Nzewi, Ugochukwu-Smooth C, Siegert, Nadine
- Authors: Siegenthaler, Fiona , Nzewi, Ugochukwu-Smooth C , Siegert, Nadine
- Date: 2019
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/146022 , vital:38488 , DOI: 10.1080/19301944.2018.1538856
- Description: This issue of Critical Interventions is dedicated to rethinking the dialectics of the rural and the urban in African art and scholarship. Inspired by the general theme of the European Conference of African Studies (ECAS/AEGIS) in Basel (June 28 to July 1, 2017), Urban Africa – Urban Africans: New Encounters of the Rural and the Urban, the guest editors of this issue hosted two panels on the relationship of urban-based artists and their interest in rural topographies, aesthetics, and cultural practices.
- Full Text:
- Date Issued: 2019
- Authors: Siegenthaler, Fiona , Nzewi, Ugochukwu-Smooth C , Siegert, Nadine
- Date: 2019
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/146022 , vital:38488 , DOI: 10.1080/19301944.2018.1538856
- Description: This issue of Critical Interventions is dedicated to rethinking the dialectics of the rural and the urban in African art and scholarship. Inspired by the general theme of the European Conference of African Studies (ECAS/AEGIS) in Basel (June 28 to July 1, 2017), Urban Africa – Urban Africans: New Encounters of the Rural and the Urban, the guest editors of this issue hosted two panels on the relationship of urban-based artists and their interest in rural topographies, aesthetics, and cultural practices.
- Full Text:
- Date Issued: 2019
Rhodes University Calender 2019
- Authors: Rhodes University
- Date: 2019
- Subjects: University Calendar , Rhodes University Regulations , Rhodes University History , Universities and colleges South Africa
- Language: English
- Type: Serial publications , University Calendar , text
- Identifier: http://hdl.handle.net/10962/455145 , vital:75407
- Description: Rhodes University Calendar for the academic year 2019.
- Full Text:
- Date Issued: 2019
- Authors: Rhodes University
- Date: 2019
- Subjects: University Calendar , Rhodes University Regulations , Rhodes University History , Universities and colleges South Africa
- Language: English
- Type: Serial publications , University Calendar , text
- Identifier: http://hdl.handle.net/10962/455145 , vital:75407
- Description: Rhodes University Calendar for the academic year 2019.
- Full Text:
- Date Issued: 2019
Risk assessment to interpret the physiological host range of Hydrellia egeriae, a biocontrol agent for Egeria densa
- Smith, Rosalie, Mangan, Rosie, Coetzee, Julie A
- Authors: Smith, Rosalie , Mangan, Rosie , Coetzee, Julie A
- Date: 2019
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/418053 , vital:71504 , xlink:href="https://doi.org/10.1007/s10526-019-09942-4"
- Description: Egeria densa Planchon (Hydrocharitaceae) is a submerged macrophyte native to South America. It forms part of a new suite of invasive aquatic plants that has benefited from open nutrient-rich freshwater systems following the successful biological control of floating aquatic plants in South Africa. The specificity of the leaf-mining fly, Hydrellia egeriae Rodrigues (Diptera: Ephydridae) was tested, using traditional laboratory host-specificity testing (i.e., no-choice and paired choice). Only one non-target species, Lagarosiphon major Deeming (Hydrocharitaceae) supported larval development during pair-choice tests. In order to avoid the rejection of a safe and potentially effective agent, continuation (i.e., multiple generations) tests were conducted to measure the ability of the non-target species to nutritionally support a population indefinitely. None of these species could sustain a viable agent population for more than three generations. Laboratory host-specificity tests are limited as they exempt certain insect-host behaviours. To enhance the interpretation of host-specificity results, a risk assessment was conducted using agent preference (i.e., choice tests) and performance (i.e., choice and continuation tests) results. The feeding and reproductive risk that H. egeriae poses to non-target species is below 2%. Based on these findings, permission for its release in South Africa has been obtained.
- Full Text:
- Date Issued: 2019
- Authors: Smith, Rosalie , Mangan, Rosie , Coetzee, Julie A
- Date: 2019
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/418053 , vital:71504 , xlink:href="https://doi.org/10.1007/s10526-019-09942-4"
- Description: Egeria densa Planchon (Hydrocharitaceae) is a submerged macrophyte native to South America. It forms part of a new suite of invasive aquatic plants that has benefited from open nutrient-rich freshwater systems following the successful biological control of floating aquatic plants in South Africa. The specificity of the leaf-mining fly, Hydrellia egeriae Rodrigues (Diptera: Ephydridae) was tested, using traditional laboratory host-specificity testing (i.e., no-choice and paired choice). Only one non-target species, Lagarosiphon major Deeming (Hydrocharitaceae) supported larval development during pair-choice tests. In order to avoid the rejection of a safe and potentially effective agent, continuation (i.e., multiple generations) tests were conducted to measure the ability of the non-target species to nutritionally support a population indefinitely. None of these species could sustain a viable agent population for more than three generations. Laboratory host-specificity tests are limited as they exempt certain insect-host behaviours. To enhance the interpretation of host-specificity results, a risk assessment was conducted using agent preference (i.e., choice tests) and performance (i.e., choice and continuation tests) results. The feeding and reproductive risk that H. egeriae poses to non-target species is below 2%. Based on these findings, permission for its release in South Africa has been obtained.
- Full Text:
- Date Issued: 2019
Risk management for port management information systems
- Authors: Jafta, Ntembeko
- Date: 2019
- Subjects: Management information systems , Harbors -- Management Risk management Risk assessment Computer security -- Management
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/40327 , vital:36141
- Description: Port Management Information Systems (Port MIS) are systems that support port managers in the facilitation of port activities. However, little is known about the system and the risk that it presents. Much information is exposed, and security needs to be strengthened. Port MIS helps managers to make decisions relating to the activities that enable effective management and leadership of the port. Inadequate and poor risk management would lead to loss of business and potential loss of human life. This research study focused on the subsystems that make up Port MIS. There is limited research on port management, and more specifically the risks involved in such national assets. The study explored the purpose of such systems and how they contribute to the whole system. The findings and recommendations would benefit port managers both nationally and internationally as globalisation becomes the basis of world trade and economies.
- Full Text:
- Date Issued: 2019
- Authors: Jafta, Ntembeko
- Date: 2019
- Subjects: Management information systems , Harbors -- Management Risk management Risk assessment Computer security -- Management
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/40327 , vital:36141
- Description: Port Management Information Systems (Port MIS) are systems that support port managers in the facilitation of port activities. However, little is known about the system and the risk that it presents. Much information is exposed, and security needs to be strengthened. Port MIS helps managers to make decisions relating to the activities that enable effective management and leadership of the port. Inadequate and poor risk management would lead to loss of business and potential loss of human life. This research study focused on the subsystems that make up Port MIS. There is limited research on port management, and more specifically the risks involved in such national assets. The study explored the purpose of such systems and how they contribute to the whole system. The findings and recommendations would benefit port managers both nationally and internationally as globalisation becomes the basis of world trade and economies.
- Full Text:
- Date Issued: 2019
River nutrient water and sediment measurements inform on nutrient retention, with implications for eutrophication
- Dalu, Tatenda, Wasserman, Ryan J, Magoro, Mandla L, Froneman, P William, Weyl, Olaf, L F
- Authors: Dalu, Tatenda , Wasserman, Ryan J , Magoro, Mandla L , Froneman, P William , Weyl, Olaf, L F
- Date: 2019
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/467222 , vital:76841 , https://doi.org/10.1016/j.scitotenv.2019.05.167
- Description: The consideration of nutrients in pollution dynamics is important for environmental management and conservation. Developing countries are yet to appreciate the aquatic ecosystem pollution impacts on their economies and as such, information on water pollution dynamics is limited. This study assessed the spatio-temporal dynamics of nutrient loading and retention in stream water and sediments in the Bloukrans River system, Eastern Cape province, South Africa over the course of the wet and dry season. Sediment and water samples were analysed for total phosphorus (TP) and nitrogen (TN) concentrations, and were used in combination with river flow discharge, to determine nutrient loads. The study results highlight that river discharge plays a significant role in temporal differences in sediment and water column nutrient concentrations.
- Full Text:
- Date Issued: 2019
- Authors: Dalu, Tatenda , Wasserman, Ryan J , Magoro, Mandla L , Froneman, P William , Weyl, Olaf, L F
- Date: 2019
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/467222 , vital:76841 , https://doi.org/10.1016/j.scitotenv.2019.05.167
- Description: The consideration of nutrients in pollution dynamics is important for environmental management and conservation. Developing countries are yet to appreciate the aquatic ecosystem pollution impacts on their economies and as such, information on water pollution dynamics is limited. This study assessed the spatio-temporal dynamics of nutrient loading and retention in stream water and sediments in the Bloukrans River system, Eastern Cape province, South Africa over the course of the wet and dry season. Sediment and water samples were analysed for total phosphorus (TP) and nitrogen (TN) concentrations, and were used in combination with river flow discharge, to determine nutrient loads. The study results highlight that river discharge plays a significant role in temporal differences in sediment and water column nutrient concentrations.
- Full Text:
- Date Issued: 2019
Role of councillors in the roll-out of the national development plan: the case of Chris Hani District Municipality
- Authors: Fololo, Ncumisa Kanyisa
- Date: 2019
- Subjects: Political leadership -- South Africa -- Eastern Cape , Municipal officials and employees -- South Africa -- Eastern Cape Local government -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: http://hdl.handle.net/10948/42129 , vital:36628
- Description: The study wants to establish the level of awareness of councillors of their role and responsibility in the National Development Plan as public representatives who are required to provide sustainable ways to meet the socio-economic needs of communities and improve the quality of life. The interest was triggered by the fact that even though the National Development Plan is a national document but its implementation and success will be gauged through the improved lives of community that are led by councillors. All the envisaged programmes and activities that are reflected in the NDP will be implemented in the municipal areas hence councillors as community leaders should be the champions of such. Their contribution as public representatives in the implementation of the NDP is vital and key. The study adopted a case study design that assisted in establishing what is required from councillors in the implementation of the NDP as they plan for communities and municipal officials as a supporting and implementing arm of the council. Qualitative and quantitative data collection instruments were used to collect data. Data collection tools used to obtain information from the councillors and municipal officials were written self-administered questionnaires for councillors and face to face interviews for municipal officials. For councillors the study reflected on their lack in carrying their fiduciary duties in providing leadership and guidance through proper planning and oversight. They have to a certain degree viewed the NDP as political document rather than a government planning framework tool. For municipal officials, the study highlighted their lack of ownership of the NDP which they view it as a separate document rather than considering that the national developed the National Spatial Development Perspective, Provinces, the Provincial Development and Growth Strategies and local government had to develop their Integrated Development Plans and all those were the strategic planning documents to drive development forward, however without having a long term vision which is called by many countries, National Development Plan to provide framework for all these documents. Subsequently, the study made a set of recommendations in this regard.
- Full Text:
- Date Issued: 2019
- Authors: Fololo, Ncumisa Kanyisa
- Date: 2019
- Subjects: Political leadership -- South Africa -- Eastern Cape , Municipal officials and employees -- South Africa -- Eastern Cape Local government -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: http://hdl.handle.net/10948/42129 , vital:36628
- Description: The study wants to establish the level of awareness of councillors of their role and responsibility in the National Development Plan as public representatives who are required to provide sustainable ways to meet the socio-economic needs of communities and improve the quality of life. The interest was triggered by the fact that even though the National Development Plan is a national document but its implementation and success will be gauged through the improved lives of community that are led by councillors. All the envisaged programmes and activities that are reflected in the NDP will be implemented in the municipal areas hence councillors as community leaders should be the champions of such. Their contribution as public representatives in the implementation of the NDP is vital and key. The study adopted a case study design that assisted in establishing what is required from councillors in the implementation of the NDP as they plan for communities and municipal officials as a supporting and implementing arm of the council. Qualitative and quantitative data collection instruments were used to collect data. Data collection tools used to obtain information from the councillors and municipal officials were written self-administered questionnaires for councillors and face to face interviews for municipal officials. For councillors the study reflected on their lack in carrying their fiduciary duties in providing leadership and guidance through proper planning and oversight. They have to a certain degree viewed the NDP as political document rather than a government planning framework tool. For municipal officials, the study highlighted their lack of ownership of the NDP which they view it as a separate document rather than considering that the national developed the National Spatial Development Perspective, Provinces, the Provincial Development and Growth Strategies and local government had to develop their Integrated Development Plans and all those were the strategic planning documents to drive development forward, however without having a long term vision which is called by many countries, National Development Plan to provide framework for all these documents. Subsequently, the study made a set of recommendations in this regard.
- Full Text:
- Date Issued: 2019
Role of Nurse Managers in Ensuring Client Satisfaction within the Primary Health Care Clinics in Buffalo City Health District
- Authors: Yiba,Theodora Nomboniso
- Date: 2019
- Subjects: Primary health care Nurse administrators
- Language: English
- Type: Thesis , Masters , M. CUR
- Identifier: http://hdl.handle.net/10353/16825 , vital:40777
- Description: In Primary Health Care system there are different categories of nurses that have different roles to play within their facilities, such as registered nurses, enrolled nurses and enrolled nursing assistants, operational managers at functional level within the Primary Health Care Clinics and also overall supervisors. The study focus was on operational managers as they are the key role players in quality client care within Primary health Care clinics, King William’s Town in Buffalo City Health District in Eastern Cape Province. The aim of the study was to describe the role of nurse managers in ensuring client satisfaction within the Primary Health Care Clinics at Buffalo City Health District in order to ensure effectiveness of Health Core Standards. The research questions were: The research questions that was addressed in this study Main question: “What is the role of nurse managers in ensuring client satisfaction within Primary Health Care Clinics at Buffalo City Health District?” Sub questions: How do you ensure client safety in your facility? How do you monitor client waiting time in your facility? What strategies can assist in the improvement of client satisfaction in Primary Health care clinics? The objectives were to explore and describe role of nurse managers in ensuring client satisfaction regarding safety within the Primary health Care clinics in Buffalo City Heath District, explore and describe role of nurse managers in client satisfaction about waiting time within Primary Health Care Clinics and to recommend strategies to improve client satisfaction within the Primary Health Care clinics in order to improve client satisfaction. A descriptive, explorative, qualitative, contextual design was used to describe and explore the role of operational manager in ensuring client satisfaction regarding client safety and waiting time within Primary Health Care Clinics. Purposive sampling method was used to select seven operational managers. Six operational managers participated in the study as one of them was bereaved during the interview period. One on one interviews with operational managers was used to collect the data. Data was collected until it reached saturation. Data collected was analyzed using Tesch’s steps of data analysis for qualitative research. vi The results were that the operational managers are performing their roles, but find it difficult to fully satisfy clients as they experience some roles’ related challenges in ensuring client satisfactory services. Related roles’ challenges were unavailability of enough nursing staff to cover all the programmes due to shortage of staff, poor infrastructure in some of the clinics, lack of support and appreciation from some of their supervisors, absenteeism of staff that negatively affect operational manager’s planning and organisation role, failure to deliver medication in time. They recommended some strategies regarding improvement of client satisfaction within the Primary Health Care clinics. The recommendations were, the department of health to fill in nurses and staff vacant posts, facilitation of prompt delivery of medication to Primary Health Care Clinics, the department to attend to poor infrastructure, District office to consider staff satisfactory survey, commitment of clinic supervisors in their monthly visits and the study findings be used when conducting further studies related to ensuring client satisfaction regarding safety and waiting time
- Full Text:
- Date Issued: 2019
- Authors: Yiba,Theodora Nomboniso
- Date: 2019
- Subjects: Primary health care Nurse administrators
- Language: English
- Type: Thesis , Masters , M. CUR
- Identifier: http://hdl.handle.net/10353/16825 , vital:40777
- Description: In Primary Health Care system there are different categories of nurses that have different roles to play within their facilities, such as registered nurses, enrolled nurses and enrolled nursing assistants, operational managers at functional level within the Primary Health Care Clinics and also overall supervisors. The study focus was on operational managers as they are the key role players in quality client care within Primary health Care clinics, King William’s Town in Buffalo City Health District in Eastern Cape Province. The aim of the study was to describe the role of nurse managers in ensuring client satisfaction within the Primary Health Care Clinics at Buffalo City Health District in order to ensure effectiveness of Health Core Standards. The research questions were: The research questions that was addressed in this study Main question: “What is the role of nurse managers in ensuring client satisfaction within Primary Health Care Clinics at Buffalo City Health District?” Sub questions: How do you ensure client safety in your facility? How do you monitor client waiting time in your facility? What strategies can assist in the improvement of client satisfaction in Primary Health care clinics? The objectives were to explore and describe role of nurse managers in ensuring client satisfaction regarding safety within the Primary health Care clinics in Buffalo City Heath District, explore and describe role of nurse managers in client satisfaction about waiting time within Primary Health Care Clinics and to recommend strategies to improve client satisfaction within the Primary Health Care clinics in order to improve client satisfaction. A descriptive, explorative, qualitative, contextual design was used to describe and explore the role of operational manager in ensuring client satisfaction regarding client safety and waiting time within Primary Health Care Clinics. Purposive sampling method was used to select seven operational managers. Six operational managers participated in the study as one of them was bereaved during the interview period. One on one interviews with operational managers was used to collect the data. Data was collected until it reached saturation. Data collected was analyzed using Tesch’s steps of data analysis for qualitative research. vi The results were that the operational managers are performing their roles, but find it difficult to fully satisfy clients as they experience some roles’ related challenges in ensuring client satisfactory services. Related roles’ challenges were unavailability of enough nursing staff to cover all the programmes due to shortage of staff, poor infrastructure in some of the clinics, lack of support and appreciation from some of their supervisors, absenteeism of staff that negatively affect operational manager’s planning and organisation role, failure to deliver medication in time. They recommended some strategies regarding improvement of client satisfaction within the Primary Health Care clinics. The recommendations were, the department of health to fill in nurses and staff vacant posts, facilitation of prompt delivery of medication to Primary Health Care Clinics, the department to attend to poor infrastructure, District office to consider staff satisfactory survey, commitment of clinic supervisors in their monthly visits and the study findings be used when conducting further studies related to ensuring client satisfaction regarding safety and waiting time
- Full Text:
- Date Issued: 2019
Role of performance management system in ensuring good governance in Nelson Mandela Bay
- Authors: Nompucuko, Skweyiya
- Date: 2019
- Subjects: Performance -- Management -- South Africa -- Nelson Mandela Bay Municipality , Strategic planning -- South Africa -- Nelson Mandela Bay Municipality Municipal government Local government Civil service
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/43357 , vital:36861
- Description: There is a lack of clarity and legislative direction in terms of performance management for non-section 56 employees that is employees other than the municipal manager or officials directly accountable to the municipal manager (Government of Republic of South Africa, 2000:72). This culminated in performance management challenges such as non-cascading of performance management to lower level employees in the Nelson Mandela Bay Municipality (NMBM, 2018). The non-cascading of performance management is consequently also as a result of the effects of poor governance, as certain groups of employees are not allowed to participate fully in performance management processes (Nielsen 2013:25). The study’s main argument is that effective performance management, which includes all employees, will result in good governance. The study investigates this argument through a case study investigation of the NMBM performance management system, using both primary and secondary data. The NMBM budget and treasury directorate was chosen to understand the NMBM performance management system. The case study analysis reveals that the NMBM performance management system promotes accountability, transparency and participation in the municipal service delivery process. However, an element of unfairness was found in that, only the executive officials can receive financial performance bonuses. The study subsequently makes recommendation to improve the NMBM’s performance management system.
- Full Text:
- Date Issued: 2019
- Authors: Nompucuko, Skweyiya
- Date: 2019
- Subjects: Performance -- Management -- South Africa -- Nelson Mandela Bay Municipality , Strategic planning -- South Africa -- Nelson Mandela Bay Municipality Municipal government Local government Civil service
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/43357 , vital:36861
- Description: There is a lack of clarity and legislative direction in terms of performance management for non-section 56 employees that is employees other than the municipal manager or officials directly accountable to the municipal manager (Government of Republic of South Africa, 2000:72). This culminated in performance management challenges such as non-cascading of performance management to lower level employees in the Nelson Mandela Bay Municipality (NMBM, 2018). The non-cascading of performance management is consequently also as a result of the effects of poor governance, as certain groups of employees are not allowed to participate fully in performance management processes (Nielsen 2013:25). The study’s main argument is that effective performance management, which includes all employees, will result in good governance. The study investigates this argument through a case study investigation of the NMBM performance management system, using both primary and secondary data. The NMBM budget and treasury directorate was chosen to understand the NMBM performance management system. The case study analysis reveals that the NMBM performance management system promotes accountability, transparency and participation in the municipal service delivery process. However, an element of unfairness was found in that, only the executive officials can receive financial performance bonuses. The study subsequently makes recommendation to improve the NMBM’s performance management system.
- Full Text:
- Date Issued: 2019
Rural food security in Mutare District, Zimbabwe, 1947-2010
- Authors: Kusena, Bernard
- Date: 2019
- Subjects: Mutare (Zimbabwe) -- History , Zimbabwe -- History , Food security -- Zimbabwe , Poverty -- Zimbabwe , Rural pooer -- Zimbabwe , Crop losses -- Zimbabwe , Food relief -- Zimbabwe
- Language: English
- Type: text , Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10962/92865 , vital:30757
- Description: By taking Mutare District as its lens to explore the dynamics of rural food security in Zimbabwe, this thesis assesses the role of the state in tackling hunger among its rural populations. It examines the impact of colonial and post-colonial food policy on efforts to combat food insecurity. The thesis explores the uneasy options pursued by rural communities in response to droughts and other threats of hunger. It identifies and ranks crop failure as the chief culprit to the district’s efforts towards food security. The thesis illustrates the contestations between the state and its rural people over which sustainable approaches to adopt in order to end hunger and how such debates continually shaped policy. It grapples with questions about the various understandings of food security advanced by scholars within the rural African context. It demonstrates, for instance, that the post-colonial state inherited an erstwhile crop production structure which shunned food crops in favour of cash crops. There was obvious bias against local preferences for a robust, home-grown food regime which did not put rural livelihoods at risk of starvation. The thesis also argues that food can be used as an instrument of war as evidenced during the liberation struggle when the vast majority of people residing in rural areas, particularly women and children, were pushed to the edges of survival. In addition, the thesis demonstrates that the infamous Marange diamonds turned out to be a curse rather than a blessing due to the state’s lack of transparency in the beneficiation chain. It concludes by a detailed examination of the political economy of food aid, demonstrating why donors have not succeeded for long to combat hunger in the district. In light of this background, the thesis provides a more nuanced analysis of the whole question of rural food security using archival material, newspapers, government and civil society reports, interviews and field observation. The thesis benefits from the use of a multi-pronged theoretical framework to capture the disparate themes that form the bedrock of this study.
- Full Text:
- Date Issued: 2019
- Authors: Kusena, Bernard
- Date: 2019
- Subjects: Mutare (Zimbabwe) -- History , Zimbabwe -- History , Food security -- Zimbabwe , Poverty -- Zimbabwe , Rural pooer -- Zimbabwe , Crop losses -- Zimbabwe , Food relief -- Zimbabwe
- Language: English
- Type: text , Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10962/92865 , vital:30757
- Description: By taking Mutare District as its lens to explore the dynamics of rural food security in Zimbabwe, this thesis assesses the role of the state in tackling hunger among its rural populations. It examines the impact of colonial and post-colonial food policy on efforts to combat food insecurity. The thesis explores the uneasy options pursued by rural communities in response to droughts and other threats of hunger. It identifies and ranks crop failure as the chief culprit to the district’s efforts towards food security. The thesis illustrates the contestations between the state and its rural people over which sustainable approaches to adopt in order to end hunger and how such debates continually shaped policy. It grapples with questions about the various understandings of food security advanced by scholars within the rural African context. It demonstrates, for instance, that the post-colonial state inherited an erstwhile crop production structure which shunned food crops in favour of cash crops. There was obvious bias against local preferences for a robust, home-grown food regime which did not put rural livelihoods at risk of starvation. The thesis also argues that food can be used as an instrument of war as evidenced during the liberation struggle when the vast majority of people residing in rural areas, particularly women and children, were pushed to the edges of survival. In addition, the thesis demonstrates that the infamous Marange diamonds turned out to be a curse rather than a blessing due to the state’s lack of transparency in the beneficiation chain. It concludes by a detailed examination of the political economy of food aid, demonstrating why donors have not succeeded for long to combat hunger in the district. In light of this background, the thesis provides a more nuanced analysis of the whole question of rural food security using archival material, newspapers, government and civil society reports, interviews and field observation. The thesis benefits from the use of a multi-pronged theoretical framework to capture the disparate themes that form the bedrock of this study.
- Full Text:
- Date Issued: 2019