The role of hashtag activism in advocating against gender-based violence and promoting perpetrator accountability : subtitle if needed. If no subtitle follow instructions in manual
- Authors: Nontyi, Antonnet
- Date: 2024-04
- Subjects: Gender based violence , Victims of violent crimes , Women -- Crimes against -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/63421 , vital:73356
- Description: This study is aimed at determining the role that hashtag activism has played in advocating against gender-based violence (GBV) and promoting perpetrator accountability. The study used major GBV hashtags such as #MeToo, #WhyIStayed and #AmINext to investigate how effective these hashtag movements have been in breaking the silence around GBV and fighting against GBV. The study made use of both qualitative and quantitative research methodology, which was useful to gain a deeper understanding of GBV and all the social and cultural practices that perpetuate it. Qualitative data were collected by means of interviews and tweets under the selected hashtags. An online survey questionnaire was used to collect quantitative data. The data provided an understanding of the complexities surrounding GBV and people’s views on hashtag activism and GBV. Through the data analysis, the study found that hashtag activism has been effective in changing dominant discourses, advocating against GBV, creating awareness and solidarity around GBV issues, and promoting perpetrator accountability. The study calls for a global collective effort to develop, record and archive feminist initiatives so that all the structural conditions which enable and perpetuate sexual violence are exposed and cannot be forgotten or ignored. Future research should look into how harmful societal norms can be challenged and how the effectiveness of hashtag movements can be enhanced , Thesis (MA) -- Faculty of Humanities, School of Language, Media and Communication, 2024
- Full Text:
- Date Issued: 2024-04
- Authors: Nontyi, Antonnet
- Date: 2024-04
- Subjects: Gender based violence , Victims of violent crimes , Women -- Crimes against -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/63421 , vital:73356
- Description: This study is aimed at determining the role that hashtag activism has played in advocating against gender-based violence (GBV) and promoting perpetrator accountability. The study used major GBV hashtags such as #MeToo, #WhyIStayed and #AmINext to investigate how effective these hashtag movements have been in breaking the silence around GBV and fighting against GBV. The study made use of both qualitative and quantitative research methodology, which was useful to gain a deeper understanding of GBV and all the social and cultural practices that perpetuate it. Qualitative data were collected by means of interviews and tweets under the selected hashtags. An online survey questionnaire was used to collect quantitative data. The data provided an understanding of the complexities surrounding GBV and people’s views on hashtag activism and GBV. Through the data analysis, the study found that hashtag activism has been effective in changing dominant discourses, advocating against GBV, creating awareness and solidarity around GBV issues, and promoting perpetrator accountability. The study calls for a global collective effort to develop, record and archive feminist initiatives so that all the structural conditions which enable and perpetuate sexual violence are exposed and cannot be forgotten or ignored. Future research should look into how harmful societal norms can be challenged and how the effectiveness of hashtag movements can be enhanced , Thesis (MA) -- Faculty of Humanities, School of Language, Media and Communication, 2024
- Full Text:
- Date Issued: 2024-04
An evaluation of the socio-economic costs and benefits of the invasive Rubus (Blackberry/Bramble) genus at selected sites in South Africa
- Authors: Mason, Brett Anthony
- Date: 2021-10-29
- Subjects: Rubus South Africa Cost effectiveness , Invasive plants South Africa Cost effectiveness , Rubus Economic aspects South Africa , Ecology Economic aspects South Africa , Rubus Ecology South Africa , Environmental economics South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10962/191931 , vital:45180
- Description: Rubus L. (brambles, blackberries, raspberries, or dewberries) are a globally recognised genus due to the edible fruit and negative impacts they can have as invasive species. There are at least 23 species of Rubus subgenus Rubus in South Africa. These include native, alien, naturalised alien, and invasive alien species. The invasive Rubus species are becoming an increasing problem in South Africa with experts in invasion biology urging caution regarding the genus (Henderson, 2011). The taxonomy of indigenous, alien and alien invasive species of Rubus are poorly understood and therefore efforts to understand the genus, the impacts and solutions to those impacts have been very limited (Stirton, 1981; Henderson, 2011; Sochor et al., 2018a). There has also been little research conducted on the economic or ecological impacts on the species or genus of species in South Africa (du Plessis et al., 1984; Botha, 2005), and yet species in the genus have been earmarked for prioritization by invasive species legislation. The potential value of certain species as well as the cost associated with their impacts could potentially create a complex conflict of interest scenario which has not been investigated. This study is an effort to inform future policy decisions regarding this suite of species by investigating the economic impacts of the invasive Rubus species. A method was developed unique to the study that incorporated research tools from environmental economics and geography to identify the nature of interactions between economic agents, experts, and alien and invasive Rubus species in South Africa. Two questionnaires were developed to generate economic data and ground proofing was used to develop geographic data. One questionnaire was directed specifically at researchers and academics that attended the 46th National Symposium on Biological Invasions that took place between 15–17 May 2019, at Waterval Country Lodge, Tulbagh and the other an economic agent questionnaire for economic agents that met strict and selective criteria relating to the impact of the six invasive Rubus species on their economic activity. Both questionnaires were designed with a mixed methods approach in mind. The ground proofing was aimed at understanding the composition and distribution of Rubus species at the selected sites: Cathcart and Hogsback (The Eastern Cape Province), Clarens (Free State Province), and Underberg (KwaZulu-Natal Province). The study established that all economic impacts of invasive Rubus species at selected sites are externalities. Invasive Rubus species in South Africa can be attributed as (i) harbouring vermin, (ii) impeding human and animal livestock, (iii) reducing crop yields, (iv) encroaching on grazing land, (v) presenting fire hazards, and (vi) negatively impacting fire regimes. These species also (i) provide berries that are retailed on a commercial level, or have been, (ii) that are utilized for personal consumption, (iii) provide an ingredient for alcohol brewing processes, and (iv) could potentially facilitate forest regeneration. The invasive species are infrequently browsed by certain livestock and far as we could ascertain do not provide ingredients for anti-inflammatory drugs or modern cosmetics in South Africa, as they do in other regions of the globe. The costs associated with the invasive species can be presented dichotomously; the estimated private cost-benefit ratio, for costs and benefits incurred or enjoyed by 18 private economic agents, stands at 0.33:1. A private-public benefit-cost ratio, that incorporates both private and public costs and benefits, stands at 13,5:1. The private-public benefit-cost includes public expenditure, or government control measures, directed at invasive Rubus and shifts the benefit-cost ratio so that costs now markedly dominate the estimated benefits. The benefits per hectare uncovered in this study stand at R13.14/ha. The private costs stand at R4.32/ha and a holistic cost, including both private and public expenditure, stands at R177,43/ha. The monetary values, when expressed per hectare, are misleading. This is due to a large standard deviation in the spread of benefits received. The benefits are enjoyed by a small number of the already small sample of respondents. The costs and benefits are not uniformly distributed across regions assessed. All benefits in this study accrue to economic agents in the Free State Province, whilst most of the costs accrued to economic agents in KwaZulu-Natal Province. The benefits appear to be primarily derived from an alien species, Rubus sect. Arguti. Management of the 6 species of invasive Rubus could be optimised by the prioritisation of those regions that incur the highest cost and derive the lowest benefit, in this case KwaZulu-Natal Province. Likewise, those regions with the highest benefits and lowest costs, the Free State Province, could provide sites for increased use and beneficiation of berries from invasive species. Management of individual species may prove difficult, given the similar morphologies, and thus, (i) either specialised training for those engaged in control must be instituted, (ii) all species of alien Rubus should be earmarked for management, or (iii) highly specific biocontrol agents for the most problematic species must be found. , Thesis (MEcon) -- Faculty of Commerce, Economics and Economic History, 2021
- Full Text:
- Date Issued: 2021-10-29
- Authors: Mason, Brett Anthony
- Date: 2021-10-29
- Subjects: Rubus South Africa Cost effectiveness , Invasive plants South Africa Cost effectiveness , Rubus Economic aspects South Africa , Ecology Economic aspects South Africa , Rubus Ecology South Africa , Environmental economics South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10962/191931 , vital:45180
- Description: Rubus L. (brambles, blackberries, raspberries, or dewberries) are a globally recognised genus due to the edible fruit and negative impacts they can have as invasive species. There are at least 23 species of Rubus subgenus Rubus in South Africa. These include native, alien, naturalised alien, and invasive alien species. The invasive Rubus species are becoming an increasing problem in South Africa with experts in invasion biology urging caution regarding the genus (Henderson, 2011). The taxonomy of indigenous, alien and alien invasive species of Rubus are poorly understood and therefore efforts to understand the genus, the impacts and solutions to those impacts have been very limited (Stirton, 1981; Henderson, 2011; Sochor et al., 2018a). There has also been little research conducted on the economic or ecological impacts on the species or genus of species in South Africa (du Plessis et al., 1984; Botha, 2005), and yet species in the genus have been earmarked for prioritization by invasive species legislation. The potential value of certain species as well as the cost associated with their impacts could potentially create a complex conflict of interest scenario which has not been investigated. This study is an effort to inform future policy decisions regarding this suite of species by investigating the economic impacts of the invasive Rubus species. A method was developed unique to the study that incorporated research tools from environmental economics and geography to identify the nature of interactions between economic agents, experts, and alien and invasive Rubus species in South Africa. Two questionnaires were developed to generate economic data and ground proofing was used to develop geographic data. One questionnaire was directed specifically at researchers and academics that attended the 46th National Symposium on Biological Invasions that took place between 15–17 May 2019, at Waterval Country Lodge, Tulbagh and the other an economic agent questionnaire for economic agents that met strict and selective criteria relating to the impact of the six invasive Rubus species on their economic activity. Both questionnaires were designed with a mixed methods approach in mind. The ground proofing was aimed at understanding the composition and distribution of Rubus species at the selected sites: Cathcart and Hogsback (The Eastern Cape Province), Clarens (Free State Province), and Underberg (KwaZulu-Natal Province). The study established that all economic impacts of invasive Rubus species at selected sites are externalities. Invasive Rubus species in South Africa can be attributed as (i) harbouring vermin, (ii) impeding human and animal livestock, (iii) reducing crop yields, (iv) encroaching on grazing land, (v) presenting fire hazards, and (vi) negatively impacting fire regimes. These species also (i) provide berries that are retailed on a commercial level, or have been, (ii) that are utilized for personal consumption, (iii) provide an ingredient for alcohol brewing processes, and (iv) could potentially facilitate forest regeneration. The invasive species are infrequently browsed by certain livestock and far as we could ascertain do not provide ingredients for anti-inflammatory drugs or modern cosmetics in South Africa, as they do in other regions of the globe. The costs associated with the invasive species can be presented dichotomously; the estimated private cost-benefit ratio, for costs and benefits incurred or enjoyed by 18 private economic agents, stands at 0.33:1. A private-public benefit-cost ratio, that incorporates both private and public costs and benefits, stands at 13,5:1. The private-public benefit-cost includes public expenditure, or government control measures, directed at invasive Rubus and shifts the benefit-cost ratio so that costs now markedly dominate the estimated benefits. The benefits per hectare uncovered in this study stand at R13.14/ha. The private costs stand at R4.32/ha and a holistic cost, including both private and public expenditure, stands at R177,43/ha. The monetary values, when expressed per hectare, are misleading. This is due to a large standard deviation in the spread of benefits received. The benefits are enjoyed by a small number of the already small sample of respondents. The costs and benefits are not uniformly distributed across regions assessed. All benefits in this study accrue to economic agents in the Free State Province, whilst most of the costs accrued to economic agents in KwaZulu-Natal Province. The benefits appear to be primarily derived from an alien species, Rubus sect. Arguti. Management of the 6 species of invasive Rubus could be optimised by the prioritisation of those regions that incur the highest cost and derive the lowest benefit, in this case KwaZulu-Natal Province. Likewise, those regions with the highest benefits and lowest costs, the Free State Province, could provide sites for increased use and beneficiation of berries from invasive species. Management of individual species may prove difficult, given the similar morphologies, and thus, (i) either specialised training for those engaged in control must be instituted, (ii) all species of alien Rubus should be earmarked for management, or (iii) highly specific biocontrol agents for the most problematic species must be found. , Thesis (MEcon) -- Faculty of Commerce, Economics and Economic History, 2021
- Full Text:
- Date Issued: 2021-10-29
Vachellia erioloba (camel thorn) and microbial interactions
- Authors: Van Aswegen, Sunet
- Date: 2018
- Subjects: Vesicular-arbuscular mycorrhizas , Cadmium , Rhizobacteria , Plant growth-promoting rhizobacteria , Acacia erioloba
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10962/63716 , vital:28475
- Description: Vachellia erioloba (camel thorn) is one of South Africa’s economically important tree species and therefore requires further investigation to improve its health and growth. Beneficial soil microbes have positive effects on plants through various mechanisms such as nitrogen fixation, phosphate solubilisation, indole acetic acid and siderophore production and biofilm formation. These traits enhance plant growth and protect the host plant against parasitic organisms that are present in soil. The arbuscular mycorrhizal (AM) fungi are well known for their beneficial symbiotic effects on host plants. The objective of this study was to determine the role of AM fungi and associated beneficial rhizobacteria in improving the growth of V. erioloba seedlings. Soil and root samples were collected from a farm in the Northern Cape, South Africa. Fifty-seven bacterial cultures were isolated from the soil and tested for plant growth promoting characteristics. Fourteen isolates showing at least four beneficial traits were molecularly identified using the GenBank database. The AM fungal and bacterial populations in the soil samples were assessed using Illumina sequencing. Sequences were identified using the MaarJAM and GenBank databases, respectively. Three separate pot trials were conducted to determine; 1) the effects of cadmium (Cd) on seedling growth; 2) the individual effects of three selected bacterial isolates and AM fungi alone and combined on seedling growth, and 3) the combined effects of the selected bacteria on AM fungal inoculated and uninoculated seedlings. Of the fourteen isolates the Enterobacter genera was the dominant species identified, with Acinetobacter, Pantoea and Bacillus each having one isolate. All were described as plant growth promoting rhizobacteria. One isolate from each genus, excluding Pantoea, was used in the pot trials. Three genera were identified in the AM fungal population that was assessed, namely Ambispora, Paraglomus and Glomus with Ambispora being the dominant genus. The bacterial population assessed showed a high diversity of bacteria from the Actinobacteria phylum being the dominant group. The results of the heavy metal pot trial showed that the symbiotic relationship between the seedlings and AM fungi increased the seedlings’ health and growth during heavy metal stress. The combination of bacteria and AM fungi increased growth parameters in all the inoculated seedlings, but not when compared to uninoculated seedlings indicating a possible competition for nutrients. The results were influenced by the presence of a nematode, which was suspected to have been seed borne. Further investigations on these interactions are required. Inoculation of AM fungi and selected PGPR is recommended for V. erioloba seedling production. , Thesis (MSc) -- Faculty of Science, Biochemistry and Microbiology, 2018
- Full Text:
- Date Issued: 2018
- Authors: Van Aswegen, Sunet
- Date: 2018
- Subjects: Vesicular-arbuscular mycorrhizas , Cadmium , Rhizobacteria , Plant growth-promoting rhizobacteria , Acacia erioloba
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10962/63716 , vital:28475
- Description: Vachellia erioloba (camel thorn) is one of South Africa’s economically important tree species and therefore requires further investigation to improve its health and growth. Beneficial soil microbes have positive effects on plants through various mechanisms such as nitrogen fixation, phosphate solubilisation, indole acetic acid and siderophore production and biofilm formation. These traits enhance plant growth and protect the host plant against parasitic organisms that are present in soil. The arbuscular mycorrhizal (AM) fungi are well known for their beneficial symbiotic effects on host plants. The objective of this study was to determine the role of AM fungi and associated beneficial rhizobacteria in improving the growth of V. erioloba seedlings. Soil and root samples were collected from a farm in the Northern Cape, South Africa. Fifty-seven bacterial cultures were isolated from the soil and tested for plant growth promoting characteristics. Fourteen isolates showing at least four beneficial traits were molecularly identified using the GenBank database. The AM fungal and bacterial populations in the soil samples were assessed using Illumina sequencing. Sequences were identified using the MaarJAM and GenBank databases, respectively. Three separate pot trials were conducted to determine; 1) the effects of cadmium (Cd) on seedling growth; 2) the individual effects of three selected bacterial isolates and AM fungi alone and combined on seedling growth, and 3) the combined effects of the selected bacteria on AM fungal inoculated and uninoculated seedlings. Of the fourteen isolates the Enterobacter genera was the dominant species identified, with Acinetobacter, Pantoea and Bacillus each having one isolate. All were described as plant growth promoting rhizobacteria. One isolate from each genus, excluding Pantoea, was used in the pot trials. Three genera were identified in the AM fungal population that was assessed, namely Ambispora, Paraglomus and Glomus with Ambispora being the dominant genus. The bacterial population assessed showed a high diversity of bacteria from the Actinobacteria phylum being the dominant group. The results of the heavy metal pot trial showed that the symbiotic relationship between the seedlings and AM fungi increased the seedlings’ health and growth during heavy metal stress. The combination of bacteria and AM fungi increased growth parameters in all the inoculated seedlings, but not when compared to uninoculated seedlings indicating a possible competition for nutrients. The results were influenced by the presence of a nematode, which was suspected to have been seed borne. Further investigations on these interactions are required. Inoculation of AM fungi and selected PGPR is recommended for V. erioloba seedling production. , Thesis (MSc) -- Faculty of Science, Biochemistry and Microbiology, 2018
- Full Text:
- Date Issued: 2018
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