Prioritising biological control agents for release against Sporobolus pyramidalis and Sporobolus natalensis (Poaceae) in Australia
- Authors: Sutton, Guy Frederick
- Date: 2021
- Subjects: Grasses -- Diseases and pests , Bruchophagus , Wasps , Alien plants -- Biological control -- Australia , Sporobolus -- Biological control -- Africa , Sporobolus -- Biological control -- Australia , Insects as biological pest control agents -- Australia , Insects as biological pest control agents -- Africa
- Language: English
- Type: text , Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10962/172445 , vital:42201 , 10.21504/10962/172445
- Description: Sporobolus pyramidalis Beauv. and S. natalensis (Steud.) Th. Dur. and Schinz. (giant rat’s tail grass) (Poaceae), invade rangelands and pastures in eastern Australia, costing the livestock industry approximately AUS$ 60 million per annum in grazing losses. Mechanical and chemical control options are costly and largely ineffective. Biological control is viewed as the most promising control option, however this management strategy has largely been avoided for grasses, due to their perceived lack of suitably host-specific and damaging natural enemies. In this thesis, the prospects for using biological control against S. pyramidalis and S. natalensis in Australia was assessed, in light of these potential challenges. Climate matching models were used to identify high-priority geographic regions within the plants’ native distributions to survey for potential biological control agents. High-priority regions to perform surveys were identified by modelling the climatic suitability for S. pyramidalis and S. natalensis in sub-Saharan Africa (i.e. their potential native ranges’), and climatic compatibility with regions where biological control is intended in Australia. High-priority regions for S. pyramidalis included: (1) coastal East Africa, ranging from north-eastern South Africa to Uganda, including south-eastern DRC, (2) some parts of West Africa, including inland regions of the Ivory Coast and western Nigeria, (3) northern Angola and (4) eastern Madagascar, and for S. natalensis included: (1) eastern South Africa, (2) eastern Zimbabwe, (3) Burundi, (4) central Ethiopia and (5) central Madagascar. Prospective control agents collected from these regions have the highest probability of establishing and proliferating in Australia, if released. In surveys of the insect assemblages on S. pyramidalis and S. natalensis in the climatically-matched region of eastern South Africa fifteen insect herbivores associated with the grasses were identified. Insect feeding guild, geographic distributions, and seasonal abundances suggest that three stem-boring phytophagous wasps, Tetramesa sp. 1, Tetramesa sp. 2 and Bruchophagus sp. 1 (Hymenoptera: Eurytomidae), have potential as control agents. Species accumulation curves indicated that additional surveys in South Africa are unlikely to yield additional potential control agents. Field host-range surveys of 47 non-target grass species in South Africa showed that Tetramesa sp. 1, Tetramesa sp. 2, and Bruchophagus sp. 1, were only recorded from S. pyramidalis and S. natalensis. Integrating field host-range with phylogenetic relationships between plant species indicated that no native Australian Sporobolus species or economic crops and pastures are expected to be attacked by these wasps. All three wasp species are predicted to be suitably host-specific for release in Australia. Three other endophagous herbivores attacked non-target native African Sporobolus species that share a close phylogenetic relationship to native Australian Sporobolus species, and therefore, demonstrate considerable risk of non-target damage. These species should not be considered as potential control agents. Under native-range, open-field conditions, Tetramesa sp. 1 caused an approximately 5-fold greater reduction in plant survival and reproductive output than Tetramesa sp. 2 and Bruchophagus sp. 1. Tetramesa sp. 1 in combination with Tetramesa sp. 2 did not significantly increase the level of damage, while Bruchophagus sp. 1 may decrease the efficiency of Tetramesa sp. 1, if released in combination. Tetramesa 1 is therefore the most promising candidate agent. Prioritising potential agents using predicted efficacy allowed otherwise equally suitable prospective agents to be prioritised in a strategic manner. Prioritising which natural enemies to target as biological control agents is a complex task. Field host range and damage assessments in the native range may provide more realistic data than typical studies performed under artificial conditions in a laboratory or quarantine. Moreover, it could assist practitioners in prioritising the most suitable agent(s) at the earliest stage in the programme as possible. This study demonstrated that grasses are suitable targets for biological control as they can harbour host-specific and damaging natural enemies.
- Full Text:
- Date Issued: 2021
- Authors: Sutton, Guy Frederick
- Date: 2021
- Subjects: Grasses -- Diseases and pests , Bruchophagus , Wasps , Alien plants -- Biological control -- Australia , Sporobolus -- Biological control -- Africa , Sporobolus -- Biological control -- Australia , Insects as biological pest control agents -- Australia , Insects as biological pest control agents -- Africa
- Language: English
- Type: text , Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10962/172445 , vital:42201 , 10.21504/10962/172445
- Description: Sporobolus pyramidalis Beauv. and S. natalensis (Steud.) Th. Dur. and Schinz. (giant rat’s tail grass) (Poaceae), invade rangelands and pastures in eastern Australia, costing the livestock industry approximately AUS$ 60 million per annum in grazing losses. Mechanical and chemical control options are costly and largely ineffective. Biological control is viewed as the most promising control option, however this management strategy has largely been avoided for grasses, due to their perceived lack of suitably host-specific and damaging natural enemies. In this thesis, the prospects for using biological control against S. pyramidalis and S. natalensis in Australia was assessed, in light of these potential challenges. Climate matching models were used to identify high-priority geographic regions within the plants’ native distributions to survey for potential biological control agents. High-priority regions to perform surveys were identified by modelling the climatic suitability for S. pyramidalis and S. natalensis in sub-Saharan Africa (i.e. their potential native ranges’), and climatic compatibility with regions where biological control is intended in Australia. High-priority regions for S. pyramidalis included: (1) coastal East Africa, ranging from north-eastern South Africa to Uganda, including south-eastern DRC, (2) some parts of West Africa, including inland regions of the Ivory Coast and western Nigeria, (3) northern Angola and (4) eastern Madagascar, and for S. natalensis included: (1) eastern South Africa, (2) eastern Zimbabwe, (3) Burundi, (4) central Ethiopia and (5) central Madagascar. Prospective control agents collected from these regions have the highest probability of establishing and proliferating in Australia, if released. In surveys of the insect assemblages on S. pyramidalis and S. natalensis in the climatically-matched region of eastern South Africa fifteen insect herbivores associated with the grasses were identified. Insect feeding guild, geographic distributions, and seasonal abundances suggest that three stem-boring phytophagous wasps, Tetramesa sp. 1, Tetramesa sp. 2 and Bruchophagus sp. 1 (Hymenoptera: Eurytomidae), have potential as control agents. Species accumulation curves indicated that additional surveys in South Africa are unlikely to yield additional potential control agents. Field host-range surveys of 47 non-target grass species in South Africa showed that Tetramesa sp. 1, Tetramesa sp. 2, and Bruchophagus sp. 1, were only recorded from S. pyramidalis and S. natalensis. Integrating field host-range with phylogenetic relationships between plant species indicated that no native Australian Sporobolus species or economic crops and pastures are expected to be attacked by these wasps. All three wasp species are predicted to be suitably host-specific for release in Australia. Three other endophagous herbivores attacked non-target native African Sporobolus species that share a close phylogenetic relationship to native Australian Sporobolus species, and therefore, demonstrate considerable risk of non-target damage. These species should not be considered as potential control agents. Under native-range, open-field conditions, Tetramesa sp. 1 caused an approximately 5-fold greater reduction in plant survival and reproductive output than Tetramesa sp. 2 and Bruchophagus sp. 1. Tetramesa sp. 1 in combination with Tetramesa sp. 2 did not significantly increase the level of damage, while Bruchophagus sp. 1 may decrease the efficiency of Tetramesa sp. 1, if released in combination. Tetramesa 1 is therefore the most promising candidate agent. Prioritising potential agents using predicted efficacy allowed otherwise equally suitable prospective agents to be prioritised in a strategic manner. Prioritising which natural enemies to target as biological control agents is a complex task. Field host range and damage assessments in the native range may provide more realistic data than typical studies performed under artificial conditions in a laboratory or quarantine. Moreover, it could assist practitioners in prioritising the most suitable agent(s) at the earliest stage in the programme as possible. This study demonstrated that grasses are suitable targets for biological control as they can harbour host-specific and damaging natural enemies.
- Full Text:
- Date Issued: 2021
The effect of habitat and spatial management on reef fish in an established marine protected area
- Authors: Dames, Vivienne Abigail
- Date: 2021
- Subjects: iSimangaliso Wetland Park (South Africa) -- Management , Reef fishes -- South Africa -- KwaZulu-Natal , Baited remote underwater stereo-video systems (stereo-BRUVs) , Marine parks and reserves -- Monitoring -- South Africa -- KwaZulu-Natal , Fish populations -- Measurement
- Language: English
- Type: text , Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/171150 , vital:42024
- Description: The persistence of harvested fish populations in the Anthropocene will be determined, above all, by how they respond to the interacting effects of climate change and fisheries exploitation. Predicting how populations will respond to both these threats is essential for any adaptive and sustainable management strategy. The response of fish populations to climate change is underpinned by physiological rates and tolerances, and emerging evidence suggests there may be physiological-based selection in capture fisheries. By quantifying important physiological rates of a model species, the endemic seabream, Chrysoblephus laticeps, across ecologically relevant thermal gradients and from populations subjected to varying intensities of commercial exploitation, this thesis aimed to 1) provide the first physiologically grounded climate resilience assessment for a South African linefish species, and 2) elucidate whether exploitation can drive populations to less physiologically resilient states in response to climate change. To identify physiologically limiting sea temperatures and to determine if exploitation alters physiological trait distributions, an intermittent flow respirometry experiment was used to test the metabolic response of spatially protected and exploited populations of C. laticeps to acute thermal variability. Exploited populations showed reduced metabolic phenotype diversity, fewer high-performance aerobic scope phenotypes, and a significantly lower aerobic scope curve across all test temperatures. Although both populations maintained a relatively high aerobic scope across a wide thermal range, their metabolic rates were compromised when extreme cold events were simulated (8 °C), suggesting that predicted future increases in upwelling frequency and intensity may be the primary limiting factor in a more thermally variable future ocean. The increment widths of annuli in the otoliths of C. laticeps from contemporary and historic collections were measured, as a proxy for the annual growth rate of exploited and protected populations. Hierarchical mixed models were used to partition growth variation within and among individuals and ascribe growth to intrinsic and extrinsic effects. The best model for the protected population indicated that the growth response of C. laticeps was poorer during years characterised by a high cumulative upwelling intensity, and better during years characterised by higher mean autumn sea surface temperatures. The exploited population growth chronology was too short to identify an extrinsic growth driver. The growth results again highlight the role of thermal variability in modulating the response of C. laticeps to its ambient environment and indicate that the predicted increases in upwelling frequency and intensity may constrain future growth rates of this species. A metabolic index (ϕ), representing the ratio of O2 supply to demand at various temperatures and oxygen concentrations, was estimated for exploited and protected populations of C. laticeps and used to predict future distribution responses. There was no difference in the laboratory calibrations of ϕ between populations, and all data was subsequently combined into a single piecewise (12 °C) calibrated ϕ model. To predict the distribution of C. laticeps, ϕ was projected across a high-resolution ocean model of the South African coastal zone, and a species distribution model implemented using the random forest algorithm and C. laticeps occurrence points. The future distribution of C. laticeps was estimated by predicting trained models across ocean model projections up to 2100. The best predictor of C. laticeps’ current distribution was minimum monthly ϕ and future predictions indicated only a slight range contraction on either edge of C. laticeps’ distribution by 2100. In order to provide policy makers, currently developing climate change management frameworks for South Africa’s ocean, with a usable output, the results of all research chapters were combined into a marine spatial model. The spatial model identified areas where C. laticeps is predicted to be resilient to climate change in terms of physiology, growth and distribution responses, which can then be prioritised for adaptation measures, such as spatial protection from exploitation. While these results are specific to C. laticeps, the methodology developed to identify areas of climate resilience has broad applications across taxa. From a global perspective, perhaps the most salient points to consider from this case study are the evidence of selective exploitation on physiological traits and the importance of environmental variability, rather than long-term mean climate changes, in affecting organism performance. These ideas are congruent with the current paradigm shift in how we think of the ocean, selective fisheries, and how they relate to organism climate resilience.
- Full Text:
- Date Issued: 2021
- Authors: Dames, Vivienne Abigail
- Date: 2021
- Subjects: iSimangaliso Wetland Park (South Africa) -- Management , Reef fishes -- South Africa -- KwaZulu-Natal , Baited remote underwater stereo-video systems (stereo-BRUVs) , Marine parks and reserves -- Monitoring -- South Africa -- KwaZulu-Natal , Fish populations -- Measurement
- Language: English
- Type: text , Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/171150 , vital:42024
- Description: The persistence of harvested fish populations in the Anthropocene will be determined, above all, by how they respond to the interacting effects of climate change and fisheries exploitation. Predicting how populations will respond to both these threats is essential for any adaptive and sustainable management strategy. The response of fish populations to climate change is underpinned by physiological rates and tolerances, and emerging evidence suggests there may be physiological-based selection in capture fisheries. By quantifying important physiological rates of a model species, the endemic seabream, Chrysoblephus laticeps, across ecologically relevant thermal gradients and from populations subjected to varying intensities of commercial exploitation, this thesis aimed to 1) provide the first physiologically grounded climate resilience assessment for a South African linefish species, and 2) elucidate whether exploitation can drive populations to less physiologically resilient states in response to climate change. To identify physiologically limiting sea temperatures and to determine if exploitation alters physiological trait distributions, an intermittent flow respirometry experiment was used to test the metabolic response of spatially protected and exploited populations of C. laticeps to acute thermal variability. Exploited populations showed reduced metabolic phenotype diversity, fewer high-performance aerobic scope phenotypes, and a significantly lower aerobic scope curve across all test temperatures. Although both populations maintained a relatively high aerobic scope across a wide thermal range, their metabolic rates were compromised when extreme cold events were simulated (8 °C), suggesting that predicted future increases in upwelling frequency and intensity may be the primary limiting factor in a more thermally variable future ocean. The increment widths of annuli in the otoliths of C. laticeps from contemporary and historic collections were measured, as a proxy for the annual growth rate of exploited and protected populations. Hierarchical mixed models were used to partition growth variation within and among individuals and ascribe growth to intrinsic and extrinsic effects. The best model for the protected population indicated that the growth response of C. laticeps was poorer during years characterised by a high cumulative upwelling intensity, and better during years characterised by higher mean autumn sea surface temperatures. The exploited population growth chronology was too short to identify an extrinsic growth driver. The growth results again highlight the role of thermal variability in modulating the response of C. laticeps to its ambient environment and indicate that the predicted increases in upwelling frequency and intensity may constrain future growth rates of this species. A metabolic index (ϕ), representing the ratio of O2 supply to demand at various temperatures and oxygen concentrations, was estimated for exploited and protected populations of C. laticeps and used to predict future distribution responses. There was no difference in the laboratory calibrations of ϕ between populations, and all data was subsequently combined into a single piecewise (12 °C) calibrated ϕ model. To predict the distribution of C. laticeps, ϕ was projected across a high-resolution ocean model of the South African coastal zone, and a species distribution model implemented using the random forest algorithm and C. laticeps occurrence points. The future distribution of C. laticeps was estimated by predicting trained models across ocean model projections up to 2100. The best predictor of C. laticeps’ current distribution was minimum monthly ϕ and future predictions indicated only a slight range contraction on either edge of C. laticeps’ distribution by 2100. In order to provide policy makers, currently developing climate change management frameworks for South Africa’s ocean, with a usable output, the results of all research chapters were combined into a marine spatial model. The spatial model identified areas where C. laticeps is predicted to be resilient to climate change in terms of physiology, growth and distribution responses, which can then be prioritised for adaptation measures, such as spatial protection from exploitation. While these results are specific to C. laticeps, the methodology developed to identify areas of climate resilience has broad applications across taxa. From a global perspective, perhaps the most salient points to consider from this case study are the evidence of selective exploitation on physiological traits and the importance of environmental variability, rather than long-term mean climate changes, in affecting organism performance. These ideas are congruent with the current paradigm shift in how we think of the ocean, selective fisheries, and how they relate to organism climate resilience.
- Full Text:
- Date Issued: 2021
Language and access in the public healthcare system in South Africa with a particular focus on primary public health facilities in Grahamstown and Cofimvaba in the Eastern Cape
- Authors: Mhlauli, Nonceba
- Date: 2017
- Subjects: Health literacy -- South Africa -- Eastern Cape , Patient education -- South Africa -- Eastern Cape , Communication in medicine -- South Africa -- Eastern Cape , Health literacy -- Social aspects -- South Africa -- Eastern Cape , Poor -- Medical care -- South Africa -- Eastern Cape
- Language: English
- Type: text , Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10962/56692 , vital:26817
- Description: The right to language and the right to healthcare services are human rights which are enshrined in the Constitution of the Republic of South Africa. Section 6 (5) of the Constitution and Section 1.3 (b) and (e) of the Eastern Cape Provincial Language Policy provide protection against unfair discrimination on the grounds of language; while sections 30 and 31 (1) of the Constitution refer to people’s rights in terms of cultural, religious and linguistic participation. Section 27 (a) states that ‘everyone has the right to access to healthcare services’. In accordance with the Constitution, in 2011 the National Department of Health passed a Policy on Language Services. This policy aims to facilitate equitable access to government services and information, as well as respect for language rights as spelled out in the Constitution. The Policy on Language Services further aims to promote multilingualism in the National Department of Health and to allow people to access information in a language of their choice, understand important messages and the language necessary for informed and participatory decision making (Department of Health 2011:1). Given the above policy and Constitutional provisions as far as policy commitment is concerned, the crucial issue remains the implementation of such policy to ensure that the right to access to health and language are realised. The study provides an analysis of the Policy on Language Services 2011 as it relates to language rights and the delivery of health services, focusing on the roll out and implementation process and the public awareness of the policy. This study primarily focuses on the role language plays in accessing public healthcare in primary healthcare facilities in the Grahamstown and Cofimvaba. The study looked at communication between patient and healthcare providers and whether healthcare services were provided in the language of the patient or the language the patient knows best. This study further assessed indications of patients’ comprehension of information such as medical instructions on packaged medicine, comprehension of posters, pamphlets and health education sessions in order to fully participate in the process of their health status. The data of this research was collected from healthcare providers and patients in primary healthcare facilities in Grahamstown and Cofimvaba in the Eastern Cape. The research methods used was in-depth interviews, non-participant observations as well as content analysis such as sign/direction posts, medical labels and information boards. These methods were used to determine whether language plays a role in accessing quality healthcare services in these facilities. The research found that the lack of implementation of language and health policy resulted in the perpetuation of language barriers in the healthcare sector. The study therefore argues that adequate healthcare can only be provided if and when healthcare providers and patients are able to communicate with each other in the language they know best or feel most comfortable in. Thus meaning the implementation of the current Constitutional and policy provisions is crucial to language and access to healthcare services.
- Full Text:
- Date Issued: 2017
- Authors: Mhlauli, Nonceba
- Date: 2017
- Subjects: Health literacy -- South Africa -- Eastern Cape , Patient education -- South Africa -- Eastern Cape , Communication in medicine -- South Africa -- Eastern Cape , Health literacy -- Social aspects -- South Africa -- Eastern Cape , Poor -- Medical care -- South Africa -- Eastern Cape
- Language: English
- Type: text , Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10962/56692 , vital:26817
- Description: The right to language and the right to healthcare services are human rights which are enshrined in the Constitution of the Republic of South Africa. Section 6 (5) of the Constitution and Section 1.3 (b) and (e) of the Eastern Cape Provincial Language Policy provide protection against unfair discrimination on the grounds of language; while sections 30 and 31 (1) of the Constitution refer to people’s rights in terms of cultural, religious and linguistic participation. Section 27 (a) states that ‘everyone has the right to access to healthcare services’. In accordance with the Constitution, in 2011 the National Department of Health passed a Policy on Language Services. This policy aims to facilitate equitable access to government services and information, as well as respect for language rights as spelled out in the Constitution. The Policy on Language Services further aims to promote multilingualism in the National Department of Health and to allow people to access information in a language of their choice, understand important messages and the language necessary for informed and participatory decision making (Department of Health 2011:1). Given the above policy and Constitutional provisions as far as policy commitment is concerned, the crucial issue remains the implementation of such policy to ensure that the right to access to health and language are realised. The study provides an analysis of the Policy on Language Services 2011 as it relates to language rights and the delivery of health services, focusing on the roll out and implementation process and the public awareness of the policy. This study primarily focuses on the role language plays in accessing public healthcare in primary healthcare facilities in the Grahamstown and Cofimvaba. The study looked at communication between patient and healthcare providers and whether healthcare services were provided in the language of the patient or the language the patient knows best. This study further assessed indications of patients’ comprehension of information such as medical instructions on packaged medicine, comprehension of posters, pamphlets and health education sessions in order to fully participate in the process of their health status. The data of this research was collected from healthcare providers and patients in primary healthcare facilities in Grahamstown and Cofimvaba in the Eastern Cape. The research methods used was in-depth interviews, non-participant observations as well as content analysis such as sign/direction posts, medical labels and information boards. These methods were used to determine whether language plays a role in accessing quality healthcare services in these facilities. The research found that the lack of implementation of language and health policy resulted in the perpetuation of language barriers in the healthcare sector. The study therefore argues that adequate healthcare can only be provided if and when healthcare providers and patients are able to communicate with each other in the language they know best or feel most comfortable in. Thus meaning the implementation of the current Constitutional and policy provisions is crucial to language and access to healthcare services.
- Full Text:
- Date Issued: 2017
Trends in mobilisation and unionisation in South Africa and Germany: a comparative analysis
- Authors: Whiteley, Julianne Beverley
- Date: 2001
- Subjects: Industrial mobilization -- South Africa , Labor unions -- South Africa , Industrial mobilization -- Germany , Labor unions -- Germany , South Africa -- Economic conditions , Germany -- Economic conditions
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: vital:3332 , http://hdl.handle.net/10962/d1003125 , Industrial mobilization -- South Africa , Labor unions -- South Africa , Industrial mobilization -- Germany , Labor unions -- Germany , South Africa -- Economic conditions , Germany -- Economic conditions
- Description: The purpose of this study is to investigate long-term trends in the union membership of South Africa and Germany, and to highlight trends in unionisation in both of these countries over a period of time. The long-term aspect of this study differentiates it from more detailed specific studies concerned with the individual fortunes of confederations or unions. The changing fortunes of trade unions have been associated with changes in work organisation, the influence of institutional pressures, or long term changes in the economic cycle. All these factors may, of course, shape and be shaped by each other. From a comparative perspective this dissertation determines whether the fortunes of unions are ultimately a product of the long waves of an economic cycle, or if other factors, such as variations in union/state relations, changes in the forms of work organisation and shifts in the employment market, impact upon union membership and mobilisation. It is hoped that the comparison of a transitional and an advanced economy may shed new light on the causes of union growth and decline, and the impact of specific social, legal and cultural variables thereon. The theoretical frame of reference for this study emerged from literature pertaining to union growth and decline. This literature discusses the historical, economic and sectoral challenges that confront the identity of unions and their ability to mobilise membership within contemporary labour markets. The entire study relies heavily on primary data collected from a wide range of sources in both countries. This method facilitates the comparison and cross-checking of information, which ensures a full and balanced study. A synthesis of the facts obtained led to certain suggestions relating to the areas in which both South African and German labour organisations could adapt their agenda and interests to the changing nature of the employment market in order to avert membership decline. The methodology of this research draws from Skopol’s work which argues that social studies ought to be grounded in historical experience in order to make sense out of specific social events that occur today. The research design utilises an initial comparative historical-political analysis of the emergence of unionism in South Africa and Germany, so as to establish those factors which have, in the past, affected union growth and decline in both countries. Thereafter, the impact of contemporary economic and sectoral trends that reoccur in the South African and German labour markets are examined and compared, in order to establish their influence on the growth or decline of union membership in both countries in the future. This study consists of four sections. The first section comprises a historical dimension that uses Valenzuela’s work relating to the political nature of labour movements to establish those factors which, in the past, have affected union growth and decline. This is done to determine whether the type of insertion of labour movements into historical national political processes, and the links formed between trade unions and political parties influences membership growth or decline. The following three sections deal with the present challenges that may affect the unions in the future. Section Two deals with factors of economic recession (namely, poverty and unemployment) which confront trade unions in the 1990s. Hyman’s Theory of Disaggregation is applied to determine if recessive socio-economic factors can account for the strength of decline of unions, as opposed to union mobilisation being purely linked to transitions between long waves of the economy as Kelly suggests. The relevance of these theories to the rise and decline of unionism in South Africa and Germany is compared and contrasted. The third section determines whether changes to more flexible forms of work organisation and shifts in the employment market can account for the contrasting strength of the South African labour movement and the decline of the German labour movement today. The way in which these issues impact negatively upon union strength in South Africa and Germany in the 1990s is compared and contrasted, again using Hyman’s Theory of Disaggregation. The final section establishes whether or not the roles adopted by the South African and German labour movements during their confrontation with labour repressive regimes impacts upon their ability to attract union membership today, despite the constraints imposed upon unions by prevailing economic and structural uncertainties. Therefore the historicity of the South African and German labour movements, (based upon the findings of the first part of this study), is referred back to. At the same time, the reactions of the South African and German labour movements to prevailing economic and structural realities, (as examined in the second part of this research) are re-examined. Three conclusions are reached. Firstly, regardless of their strengths or weaknesses, all labour organisations are capable of adjusting to the adverse changes taking place in contemporary employment markets if they prove willing to advance and defend the interests of all who work, including those in the informal sector. If unions continue to neglect the informal labour market, they run the risk of being transposed by social movements that are antagonistic to trade unions or new expressions of the workforce’s latent collectivism. Secondly, in successfully playing a social movement role that led to the downfall of Apartheid in 1994, the South African labour movement has evolved as an energetic body with a dimension of recumbent militancy that attempts to adapt its identity to the changing nature of the employment market. This enables the South African labour movement to continue to attract membership despite the prevailing economic uncertainties. In contrast, forced co-operation and consensus within the German industrial relations arena since World War Two has resulted in a less dynamic union movement that lacks initiative in adapting to the changing nature of the employment market. The result is a decline in unionism. Finally, the fortunes of unions are not, as Kelly suggests, purely a product of economic cycles. Political climates can also influence mobilisation, as has occurred in both South Africa and Germany. This implies that mobilisation is not only activated by the economic dissatisfaction of a union movement.
- Full Text:
- Date Issued: 2001
- Authors: Whiteley, Julianne Beverley
- Date: 2001
- Subjects: Industrial mobilization -- South Africa , Labor unions -- South Africa , Industrial mobilization -- Germany , Labor unions -- Germany , South Africa -- Economic conditions , Germany -- Economic conditions
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: vital:3332 , http://hdl.handle.net/10962/d1003125 , Industrial mobilization -- South Africa , Labor unions -- South Africa , Industrial mobilization -- Germany , Labor unions -- Germany , South Africa -- Economic conditions , Germany -- Economic conditions
- Description: The purpose of this study is to investigate long-term trends in the union membership of South Africa and Germany, and to highlight trends in unionisation in both of these countries over a period of time. The long-term aspect of this study differentiates it from more detailed specific studies concerned with the individual fortunes of confederations or unions. The changing fortunes of trade unions have been associated with changes in work organisation, the influence of institutional pressures, or long term changes in the economic cycle. All these factors may, of course, shape and be shaped by each other. From a comparative perspective this dissertation determines whether the fortunes of unions are ultimately a product of the long waves of an economic cycle, or if other factors, such as variations in union/state relations, changes in the forms of work organisation and shifts in the employment market, impact upon union membership and mobilisation. It is hoped that the comparison of a transitional and an advanced economy may shed new light on the causes of union growth and decline, and the impact of specific social, legal and cultural variables thereon. The theoretical frame of reference for this study emerged from literature pertaining to union growth and decline. This literature discusses the historical, economic and sectoral challenges that confront the identity of unions and their ability to mobilise membership within contemporary labour markets. The entire study relies heavily on primary data collected from a wide range of sources in both countries. This method facilitates the comparison and cross-checking of information, which ensures a full and balanced study. A synthesis of the facts obtained led to certain suggestions relating to the areas in which both South African and German labour organisations could adapt their agenda and interests to the changing nature of the employment market in order to avert membership decline. The methodology of this research draws from Skopol’s work which argues that social studies ought to be grounded in historical experience in order to make sense out of specific social events that occur today. The research design utilises an initial comparative historical-political analysis of the emergence of unionism in South Africa and Germany, so as to establish those factors which have, in the past, affected union growth and decline in both countries. Thereafter, the impact of contemporary economic and sectoral trends that reoccur in the South African and German labour markets are examined and compared, in order to establish their influence on the growth or decline of union membership in both countries in the future. This study consists of four sections. The first section comprises a historical dimension that uses Valenzuela’s work relating to the political nature of labour movements to establish those factors which, in the past, have affected union growth and decline. This is done to determine whether the type of insertion of labour movements into historical national political processes, and the links formed between trade unions and political parties influences membership growth or decline. The following three sections deal with the present challenges that may affect the unions in the future. Section Two deals with factors of economic recession (namely, poverty and unemployment) which confront trade unions in the 1990s. Hyman’s Theory of Disaggregation is applied to determine if recessive socio-economic factors can account for the strength of decline of unions, as opposed to union mobilisation being purely linked to transitions between long waves of the economy as Kelly suggests. The relevance of these theories to the rise and decline of unionism in South Africa and Germany is compared and contrasted. The third section determines whether changes to more flexible forms of work organisation and shifts in the employment market can account for the contrasting strength of the South African labour movement and the decline of the German labour movement today. The way in which these issues impact negatively upon union strength in South Africa and Germany in the 1990s is compared and contrasted, again using Hyman’s Theory of Disaggregation. The final section establishes whether or not the roles adopted by the South African and German labour movements during their confrontation with labour repressive regimes impacts upon their ability to attract union membership today, despite the constraints imposed upon unions by prevailing economic and structural uncertainties. Therefore the historicity of the South African and German labour movements, (based upon the findings of the first part of this study), is referred back to. At the same time, the reactions of the South African and German labour movements to prevailing economic and structural realities, (as examined in the second part of this research) are re-examined. Three conclusions are reached. Firstly, regardless of their strengths or weaknesses, all labour organisations are capable of adjusting to the adverse changes taking place in contemporary employment markets if they prove willing to advance and defend the interests of all who work, including those in the informal sector. If unions continue to neglect the informal labour market, they run the risk of being transposed by social movements that are antagonistic to trade unions or new expressions of the workforce’s latent collectivism. Secondly, in successfully playing a social movement role that led to the downfall of Apartheid in 1994, the South African labour movement has evolved as an energetic body with a dimension of recumbent militancy that attempts to adapt its identity to the changing nature of the employment market. This enables the South African labour movement to continue to attract membership despite the prevailing economic uncertainties. In contrast, forced co-operation and consensus within the German industrial relations arena since World War Two has resulted in a less dynamic union movement that lacks initiative in adapting to the changing nature of the employment market. The result is a decline in unionism. Finally, the fortunes of unions are not, as Kelly suggests, purely a product of economic cycles. Political climates can also influence mobilisation, as has occurred in both South Africa and Germany. This implies that mobilisation is not only activated by the economic dissatisfaction of a union movement.
- Full Text:
- Date Issued: 2001
A study of the tragedy of Coriolanus by William Shakespeare
- Authors: Knox, Catherine Mary
- Date: 1973
- Subjects: Shakespeare, William, 1564-1616 -- Coriolanus , Shakespeare, William, 1564-1616 -- Criticism and interpretation
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2304 , http://hdl.handle.net/10962/d1012642 , Shakespeare, William, 1564-1616 -- Coriolanus , Shakespeare, William, 1564-1616 -- Criticism and interpretation
- Description: It would be difficult to prove conclusively that Shakespeare was not invited or requested to write a play based on the popular story of Coriolanus. J.M. Robertson concretises this possibility with an intriguing thesis that the play was in fact rewritten from an original by Chapman. The story, he argues, would have had a far greater appeal to Chapman with his consuming interest in the heroic age of Classical antiquity, than to Shakespeare. Further, it is likely, he says, that Chapman was familiar with Alexandre Hardy 's Coriolan which, it is generally accepted, Shakespeare was not, hence the startling similarities in some of the two plays' deviations from their common source. This is hardly a more satisfactory explanation than the kind of airy alternative that disposes of the mystery by saying the source material is such that it would invite any dramatist to make similar changes. Chap. 1
- Full Text:
- Date Issued: 1973
- Authors: Knox, Catherine Mary
- Date: 1973
- Subjects: Shakespeare, William, 1564-1616 -- Coriolanus , Shakespeare, William, 1564-1616 -- Criticism and interpretation
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2304 , http://hdl.handle.net/10962/d1012642 , Shakespeare, William, 1564-1616 -- Coriolanus , Shakespeare, William, 1564-1616 -- Criticism and interpretation
- Description: It would be difficult to prove conclusively that Shakespeare was not invited or requested to write a play based on the popular story of Coriolanus. J.M. Robertson concretises this possibility with an intriguing thesis that the play was in fact rewritten from an original by Chapman. The story, he argues, would have had a far greater appeal to Chapman with his consuming interest in the heroic age of Classical antiquity, than to Shakespeare. Further, it is likely, he says, that Chapman was familiar with Alexandre Hardy 's Coriolan which, it is generally accepted, Shakespeare was not, hence the startling similarities in some of the two plays' deviations from their common source. This is hardly a more satisfactory explanation than the kind of airy alternative that disposes of the mystery by saying the source material is such that it would invite any dramatist to make similar changes. Chap. 1
- Full Text:
- Date Issued: 1973
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