A needs analysis of an employee wellness programme : the case of the Financial Services Regulatory Authority (FSRA) of Swaziland
- Authors: Madlopha, Sboniso Charles
- Date: 2015
- Subjects: Financial Services Regulatory Authority (Swaziland) , Employee health promotion -- Swaziland , Needs assessment -- Swaziland , Absenteeism (Labor) -- Swaziland , Employee morale -- Swaziland , Contracting out -- Swaziland
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:857 , http://hdl.handle.net/10962/d1018912
- Description: In 2010, the Financial Services Regulatory Authority (FSRA) of Swaziland noticed a significant increase in employee absenteeism which they discovered was related mainly to: poor health (sick leave), personal and financial stress (garnishee orders were increasing), and low staff morale, the consequence of which was low productivity and missed deadlines (FSRA, 2010:7). High levels of absenteeism meant that a sizeable number of employees were unable to complete their daily tasks (FSRA, 2010:7). Consequently, in 2011, the FSRA Human Resource Department started a wellness programme for all employees in the organization in an attempt to respond to the human resource challenges reported in 2009/10 financial year. By the end of 2012, FSRA management reported that the introduction of the EWP had not yielded the expected results. This therefore prompted management to request an evaluation of the FSRA employee wellness programme. The aim of this research was to identify and prioritize the needs of employees in terms of requirements of a wellness programme and how it should be delivered. The specific objectives of the study are as follows: to identify the wellness needs of employees, to identify employee preferences in terms of the type of interventions to be included in a wellness programme, to identify the preferred mode of delivery of the wellness programme and to make recommendations to management on the design of a wellness programme. Questionnaires with closed ended questions were used to collect data for this survey. The questionnaire used is attached as Appendix A. By means of a needs analysis survey, this research was designed to assess the FSRA employees’ needs in terms of an employee wellness programme, as well as the preferred EWP delivery methods. About 70 percent of FSRA employees participated in the survey. The respondents completed the questionnaire and submitted it online over a period of 10 working days (2 weeks). This report is structured into three sections, namely; section one, which is the evaluation report that gives details of the importance of the study, highlights research methods and then present the results, discussions and recommendations. Section two deals with the literature review while section three reports on the research methodology, research design and procedures and the limitation of the study. In light of the findings on the wellness needs of employees, 72 percent of the respondents felt the current wellness programme was very inadequate and a further 10 percent added that it was inadequate in addressing their wellness needs largely because the needs were not known. The most important wellness needs identified included: exercise, nutrition, personal hygiene, disease awareness and treatment of illness, coping with stress, coping with workload, ventilation, safety, bereavement, personal debt, and retirement planning. The most preferred wellness interventions that respondents proposed include Flexible Work Schedule, Safe Workplace, Improved Ventilation, Retirement Planning Advice and Gymnasium. Further analysis done using correlation analysis indicated that there was a significant positive relationship between the wellness needs and the wellness interventions. Concerning the delivery of the wellness programme, most of the employees indicated that outsourcing certain services was better than having them in house. The highest ranking of the services for out sourcing were nutrition education and medical checkups that ranked between 82 percent and 75 percent respectively. The respondents indicated that they want almost all the chosen interventions to be outsourced. Time slots should also be taken into consideration to ensure employee participation in the wellness programme services. The respondent FSRA employees seem to prefer interventions of an educational nature to be during the lunch hour. These include Nutrition Education, Health Education, Hygiene Education and Medical Check ups and Treatment, whereas Gymnasium was preferred to be after working hours.
- Full Text:
- Date Issued: 2015
- Authors: Madlopha, Sboniso Charles
- Date: 2015
- Subjects: Financial Services Regulatory Authority (Swaziland) , Employee health promotion -- Swaziland , Needs assessment -- Swaziland , Absenteeism (Labor) -- Swaziland , Employee morale -- Swaziland , Contracting out -- Swaziland
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:857 , http://hdl.handle.net/10962/d1018912
- Description: In 2010, the Financial Services Regulatory Authority (FSRA) of Swaziland noticed a significant increase in employee absenteeism which they discovered was related mainly to: poor health (sick leave), personal and financial stress (garnishee orders were increasing), and low staff morale, the consequence of which was low productivity and missed deadlines (FSRA, 2010:7). High levels of absenteeism meant that a sizeable number of employees were unable to complete their daily tasks (FSRA, 2010:7). Consequently, in 2011, the FSRA Human Resource Department started a wellness programme for all employees in the organization in an attempt to respond to the human resource challenges reported in 2009/10 financial year. By the end of 2012, FSRA management reported that the introduction of the EWP had not yielded the expected results. This therefore prompted management to request an evaluation of the FSRA employee wellness programme. The aim of this research was to identify and prioritize the needs of employees in terms of requirements of a wellness programme and how it should be delivered. The specific objectives of the study are as follows: to identify the wellness needs of employees, to identify employee preferences in terms of the type of interventions to be included in a wellness programme, to identify the preferred mode of delivery of the wellness programme and to make recommendations to management on the design of a wellness programme. Questionnaires with closed ended questions were used to collect data for this survey. The questionnaire used is attached as Appendix A. By means of a needs analysis survey, this research was designed to assess the FSRA employees’ needs in terms of an employee wellness programme, as well as the preferred EWP delivery methods. About 70 percent of FSRA employees participated in the survey. The respondents completed the questionnaire and submitted it online over a period of 10 working days (2 weeks). This report is structured into three sections, namely; section one, which is the evaluation report that gives details of the importance of the study, highlights research methods and then present the results, discussions and recommendations. Section two deals with the literature review while section three reports on the research methodology, research design and procedures and the limitation of the study. In light of the findings on the wellness needs of employees, 72 percent of the respondents felt the current wellness programme was very inadequate and a further 10 percent added that it was inadequate in addressing their wellness needs largely because the needs were not known. The most important wellness needs identified included: exercise, nutrition, personal hygiene, disease awareness and treatment of illness, coping with stress, coping with workload, ventilation, safety, bereavement, personal debt, and retirement planning. The most preferred wellness interventions that respondents proposed include Flexible Work Schedule, Safe Workplace, Improved Ventilation, Retirement Planning Advice and Gymnasium. Further analysis done using correlation analysis indicated that there was a significant positive relationship between the wellness needs and the wellness interventions. Concerning the delivery of the wellness programme, most of the employees indicated that outsourcing certain services was better than having them in house. The highest ranking of the services for out sourcing were nutrition education and medical checkups that ranked between 82 percent and 75 percent respectively. The respondents indicated that they want almost all the chosen interventions to be outsourced. Time slots should also be taken into consideration to ensure employee participation in the wellness programme services. The respondent FSRA employees seem to prefer interventions of an educational nature to be during the lunch hour. These include Nutrition Education, Health Education, Hygiene Education and Medical Check ups and Treatment, whereas Gymnasium was preferred to be after working hours.
- Full Text:
- Date Issued: 2015
An assessment of e-tolling as a method of financing Gauteng roads
- Authors: Ponter, Lloyd Anthony
- Date: 2015
- Subjects: Toll roads -- Taxation -- South Africa -- Gauteng , Electronic Road Pricing System -- South Africa -- Gauteng , Toll roads -- South Africa -- Gauteng -- Cost effectiveness
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:912 , http://hdl.handle.net/10962/d1017185
- Description: E-tolling was recently implemented on roads in Gauteng, South Africa. This gave rise to a great deal of protest by road users and a court battle between the South African National Roads Agency (SANRAL) and the Opposition to Urban Tolling Alliance, a body representing road users. The e-tolling system was criticised at various levels and on numerous grounds, some financial and others appearing to be emotional. This thesis attempted to analyse the various grounds for objection against the system, the main goal of the research being to analyse e-tolling in Gauteng to ascertain whether or not the introduction of e-tolling was justified or whether an alternative method of taxation to pay for the upgrading of Gauteng roads would have been more cost-effective. Secondary data in the form of documents from multiple sources was used in the analysis, including an Economic Impact Assessment that was one of the key inputs into the decision to introduce e-tolling. It was found that there are multiple problems plaguing the e-toll system and e-tolling is not the most cost-effective taxation method of paying for Gauteng roads. Using a fuel levy or general tax revenue available to the National Treasury were both found to be more cost-effective methods as they would have achieved the same result (repairing and upgrading specific Gauteng roads), at a cost of R20,0913 billion less than e-tolling. It was suggested that the best taxation method/s to pay for the roads would have been using a fuel levy and general tax revenue as the primary funding methods, with vehicle licensing fees and long distance toll roads as secondary methods to aid the primary methods.
- Full Text:
- Date Issued: 2015
- Authors: Ponter, Lloyd Anthony
- Date: 2015
- Subjects: Toll roads -- Taxation -- South Africa -- Gauteng , Electronic Road Pricing System -- South Africa -- Gauteng , Toll roads -- South Africa -- Gauteng -- Cost effectiveness
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:912 , http://hdl.handle.net/10962/d1017185
- Description: E-tolling was recently implemented on roads in Gauteng, South Africa. This gave rise to a great deal of protest by road users and a court battle between the South African National Roads Agency (SANRAL) and the Opposition to Urban Tolling Alliance, a body representing road users. The e-tolling system was criticised at various levels and on numerous grounds, some financial and others appearing to be emotional. This thesis attempted to analyse the various grounds for objection against the system, the main goal of the research being to analyse e-tolling in Gauteng to ascertain whether or not the introduction of e-tolling was justified or whether an alternative method of taxation to pay for the upgrading of Gauteng roads would have been more cost-effective. Secondary data in the form of documents from multiple sources was used in the analysis, including an Economic Impact Assessment that was one of the key inputs into the decision to introduce e-tolling. It was found that there are multiple problems plaguing the e-toll system and e-tolling is not the most cost-effective taxation method of paying for Gauteng roads. Using a fuel levy or general tax revenue available to the National Treasury were both found to be more cost-effective methods as they would have achieved the same result (repairing and upgrading specific Gauteng roads), at a cost of R20,0913 billion less than e-tolling. It was suggested that the best taxation method/s to pay for the roads would have been using a fuel levy and general tax revenue as the primary funding methods, with vehicle licensing fees and long distance toll roads as secondary methods to aid the primary methods.
- Full Text:
- Date Issued: 2015
Learners' numeracy progression and the role of mediation in the context of two after school mathematics clubs
- Authors: Stott, Deborah Ann
- Date: 2015
- Subjects: Mathematics -- Study and teaching (Elementary) -- South Africa , After-school programs -- South Africa , Numeracy -- Study and teaching (Elementary) -- South Africa , Learning, Psychology of , Education -- Research -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:2017 , http://hdl.handle.net/10962/d1017181
- Description: National and international assessment results, research studies and reports point to South Africa as having educational challenges, specifically with mathematics, science and language. Addressing some of these issues is a key aim for the SANC project at Rhodes University, the context in which this study takes place. Working from a broad Vygotskian perspective of learning and development, this study had a dual focus and investigated how Grade 3 learners’ mathematical proficiency progressed (or not) whilst participating in after school maths clubs over the course of a year, and explored how the mediation offered in the clubs enabled or constrained the emergence of zones of proximal development (ZPD) and thus learning for the club learners. Methodologically, this study works within a largely qualitative, interpretive research paradigm and is designed using a longitudinal case study research strategy. Two after school maths clubs formed the empirical field. The study drew on a range of data collection methods to investigate the dual nature of the research questions for Grade 3 learners. Examples include adapted one-to-one mathematical proficiency interviews and paired task based interviews. The study highlighted the relationship between the multiple roles I played both within the research study and within the SANC project context and emphasises the influence and future implications for these various roles within the SANC project and beyond in terms of my own role as club mentor, for the future design of the SANC project maths club programme and for broader teacher and club facilitator development within and beyond the project. This study has offered insight into how mathematical proficiency may develop in Grade 3 South African learners and as such is an important contribution to the newly developing field of both numeracy and primary educational research in Southern Africa. Additionally, the research findings point to the clubs, as an example of an out-of-school time (OST) programme, providing potentially enabling spaces for both recovery and extension of mathematical proficiency in learners as these spaces are free from several contextual constraints that teachers face in their classrooms. Furthermore, it was found that learners showed development of their conceptual understanding, procedural fluency and adaptive reasoning as proposed by Kilpatrick, Swafford and Findell (2001). The use of various elements of the Maths Recovery (MR) programme (Wright, 2003) in the research process has highlighted various important contributions for broader research. For example, the need to investigate less time consuming approaches to both diagnostic assessment and learner mathematical profiling. Findings from this study support Meira and Lerman’s (2001, 2009) recently developed notion that catching attention is key to the creation or emergence of a ZPD. The study found that a combination of ‘attention catching’ and ‘tuning in’ enabled the creation (emergence) and sustainment of ZPDs in club learners. The study proposed the notion of tuning in where participants in a mathematical interaction continually adjust to each other in order to communicate mathematically. Furthermore, the study found that when attention is not caught or the participants are not tuned in, the learning activity may still be useful in assisting learners to consolidate their existing learning and / or build confidence and as such is particularly relevant to the South African context where fluency in calculating is weak (Hoadley, 2012; Schollar, 2008). This emergent notion of ‘flow’ additionally can play a supporting role in the emergence of a ZPD. The study also found that the manner in which the mediation was offered is important. The results show that the mathematical contributions learners make during interactions captured the mentors’ attention and resulted in mediation that was intentional but spontaneous, flexible, responsive and in-the-moment. This study makes theoretical and methodological contributions to various aspects of mathematics education research particularly with regard to how ZPDs emerge and are sustained and how mediation is offered to facilitate the emergence of ZPDs. Additionally, some aspects of the Learning Framework in Number (LFIN) as part of the Maths Recovery programme have been extended to work in a South African after school club context and to provide useful information for both learner progression over time and for planning of club activities. As such this study thus also contributes to the newly developing field of primary mathematics research in South Africa and to the body of research on primary after school learning programmes both locally and internationally.
- Full Text:
- Date Issued: 2015
- Authors: Stott, Deborah Ann
- Date: 2015
- Subjects: Mathematics -- Study and teaching (Elementary) -- South Africa , After-school programs -- South Africa , Numeracy -- Study and teaching (Elementary) -- South Africa , Learning, Psychology of , Education -- Research -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:2017 , http://hdl.handle.net/10962/d1017181
- Description: National and international assessment results, research studies and reports point to South Africa as having educational challenges, specifically with mathematics, science and language. Addressing some of these issues is a key aim for the SANC project at Rhodes University, the context in which this study takes place. Working from a broad Vygotskian perspective of learning and development, this study had a dual focus and investigated how Grade 3 learners’ mathematical proficiency progressed (or not) whilst participating in after school maths clubs over the course of a year, and explored how the mediation offered in the clubs enabled or constrained the emergence of zones of proximal development (ZPD) and thus learning for the club learners. Methodologically, this study works within a largely qualitative, interpretive research paradigm and is designed using a longitudinal case study research strategy. Two after school maths clubs formed the empirical field. The study drew on a range of data collection methods to investigate the dual nature of the research questions for Grade 3 learners. Examples include adapted one-to-one mathematical proficiency interviews and paired task based interviews. The study highlighted the relationship between the multiple roles I played both within the research study and within the SANC project context and emphasises the influence and future implications for these various roles within the SANC project and beyond in terms of my own role as club mentor, for the future design of the SANC project maths club programme and for broader teacher and club facilitator development within and beyond the project. This study has offered insight into how mathematical proficiency may develop in Grade 3 South African learners and as such is an important contribution to the newly developing field of both numeracy and primary educational research in Southern Africa. Additionally, the research findings point to the clubs, as an example of an out-of-school time (OST) programme, providing potentially enabling spaces for both recovery and extension of mathematical proficiency in learners as these spaces are free from several contextual constraints that teachers face in their classrooms. Furthermore, it was found that learners showed development of their conceptual understanding, procedural fluency and adaptive reasoning as proposed by Kilpatrick, Swafford and Findell (2001). The use of various elements of the Maths Recovery (MR) programme (Wright, 2003) in the research process has highlighted various important contributions for broader research. For example, the need to investigate less time consuming approaches to both diagnostic assessment and learner mathematical profiling. Findings from this study support Meira and Lerman’s (2001, 2009) recently developed notion that catching attention is key to the creation or emergence of a ZPD. The study found that a combination of ‘attention catching’ and ‘tuning in’ enabled the creation (emergence) and sustainment of ZPDs in club learners. The study proposed the notion of tuning in where participants in a mathematical interaction continually adjust to each other in order to communicate mathematically. Furthermore, the study found that when attention is not caught or the participants are not tuned in, the learning activity may still be useful in assisting learners to consolidate their existing learning and / or build confidence and as such is particularly relevant to the South African context where fluency in calculating is weak (Hoadley, 2012; Schollar, 2008). This emergent notion of ‘flow’ additionally can play a supporting role in the emergence of a ZPD. The study also found that the manner in which the mediation was offered is important. The results show that the mathematical contributions learners make during interactions captured the mentors’ attention and resulted in mediation that was intentional but spontaneous, flexible, responsive and in-the-moment. This study makes theoretical and methodological contributions to various aspects of mathematics education research particularly with regard to how ZPDs emerge and are sustained and how mediation is offered to facilitate the emergence of ZPDs. Additionally, some aspects of the Learning Framework in Number (LFIN) as part of the Maths Recovery programme have been extended to work in a South African after school club context and to provide useful information for both learner progression over time and for planning of club activities. As such this study thus also contributes to the newly developing field of primary mathematics research in South Africa and to the body of research on primary after school learning programmes both locally and internationally.
- Full Text:
- Date Issued: 2015
Implementation of multilingualism in South African higher education : exploring the use of isiXhosa in teaching and learning at Rhodes University
- Authors: Gambushe, Wanga
- Date: 2015
- Subjects: Language and education -- South Africa , Multilingual education -- South Africa , Native language and education -- South Africa , Education, Higher -- South Africa , Language policy -- South Africa , Cytology -- Study and teaching (Higher) -- South Africa , Xhosa (African people) -- Education (Higher)
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3649 , http://hdl.handle.net/10962/d1017890
- Description: This study explores the implementation of multilingualism at Rhodes University (RU), by examining the teaching and learning practices of lecturers, demonstrators and students within the Cell Biology module, offered by the Biological Sciences and Botany departments at RU. This examination is in line with RU’s Language Policy (2005/2014), which recognises multilingualism and the development of isiXhosa as an academic/scientific language. The study and the choice for the location of the study within RU was motivated by what seemed to be a pattern of under achievement of LOTE speaking students studying Cell Biology. This pattern necessitated a further inquiry into the language aspect of the teaching and learning of Cell Biology. The goals of this research were to investigate spaces where LOTE students use their home languages and the motivations behind their usage of those languages. Due to the varying proficiencies of LOTE students in their mother tongue, this study sought to investigate the language capabilities of LOTE students in their home languages. The perceptions of the main role players in the Cell Biology module were sought, in order to get an idea of what students, lecturers and demonstrators thought about multilingualism in teaching and learning practices in the Cell Biology module. This study has discovered that there is a disparity in achievement between LOTE and English speaking students, with English students outperforming LOTE students consistently in the period investigated. On the language capabilities of LOTE students in their mother tongue, it was discovered that they have enough linguistic capital for a mother tongue intervention to succeed. There were mixed views about the use of LOTE in HE, but students were mostly in favour of the use of LOTE. A number of recommendations are made as to how multilingualism can be implemented in Cell Biology. In this study I argue that there is a need to use the mother tongue of LOTE students in order to support learning, the mother tongue intervention is supported by scholars such as Paxton (2007, 2009; Madiba 2011, 2012, 2014). The use of the mother tongue to support learning should be a short-term measure while the process of the development of African languages is underway, because languages develop as they are used, and form follows function (Madiba 2008). Ultimately, African languages should be developed and use as academic languages in HE not only in order to fulfil the legislative imperatives such as the Constitution and the Language Policy Higher Education but also to increase access and success among LOTE students.
- Full Text:
- Date Issued: 2015
- Authors: Gambushe, Wanga
- Date: 2015
- Subjects: Language and education -- South Africa , Multilingual education -- South Africa , Native language and education -- South Africa , Education, Higher -- South Africa , Language policy -- South Africa , Cytology -- Study and teaching (Higher) -- South Africa , Xhosa (African people) -- Education (Higher)
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3649 , http://hdl.handle.net/10962/d1017890
- Description: This study explores the implementation of multilingualism at Rhodes University (RU), by examining the teaching and learning practices of lecturers, demonstrators and students within the Cell Biology module, offered by the Biological Sciences and Botany departments at RU. This examination is in line with RU’s Language Policy (2005/2014), which recognises multilingualism and the development of isiXhosa as an academic/scientific language. The study and the choice for the location of the study within RU was motivated by what seemed to be a pattern of under achievement of LOTE speaking students studying Cell Biology. This pattern necessitated a further inquiry into the language aspect of the teaching and learning of Cell Biology. The goals of this research were to investigate spaces where LOTE students use their home languages and the motivations behind their usage of those languages. Due to the varying proficiencies of LOTE students in their mother tongue, this study sought to investigate the language capabilities of LOTE students in their home languages. The perceptions of the main role players in the Cell Biology module were sought, in order to get an idea of what students, lecturers and demonstrators thought about multilingualism in teaching and learning practices in the Cell Biology module. This study has discovered that there is a disparity in achievement between LOTE and English speaking students, with English students outperforming LOTE students consistently in the period investigated. On the language capabilities of LOTE students in their mother tongue, it was discovered that they have enough linguistic capital for a mother tongue intervention to succeed. There were mixed views about the use of LOTE in HE, but students were mostly in favour of the use of LOTE. A number of recommendations are made as to how multilingualism can be implemented in Cell Biology. In this study I argue that there is a need to use the mother tongue of LOTE students in order to support learning, the mother tongue intervention is supported by scholars such as Paxton (2007, 2009; Madiba 2011, 2012, 2014). The use of the mother tongue to support learning should be a short-term measure while the process of the development of African languages is underway, because languages develop as they are used, and form follows function (Madiba 2008). Ultimately, African languages should be developed and use as academic languages in HE not only in order to fulfil the legislative imperatives such as the Constitution and the Language Policy Higher Education but also to increase access and success among LOTE students.
- Full Text:
- Date Issued: 2015
The associative behaviour of silky sharks, Carcharhinus falciformis, with floating objects in the open ocean
- Authors: Filmalter, John David
- Date: 2015
- Subjects: Silky shark , Silky shark -- Behavior , Silky shark -- Marking , Silky shark -- Food , Tuna fisheries -- Bycatches , Fish aggregation devices , Underwater acoustic telemetry , Fish tagging
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5381 , http://hdl.handle.net/10962/d1018177
- Description: The silky shark Carcharhinus falciformis forms the primary elasmobranch bycatch in tuna purse seine fisheries using fish aggregating devices (FADs) in all of the world’s tropical oceans. Its life-history traits of slow growth, late maturation and low fecundity make it vulnerable to over exploitation, as is apparent from historical bycatch trends. Very little is known about the associative behaviour of this species with floating objects, information which is essential in formulating effective mitigation and management measures. This study aims to address this knowledge gap through the use of various electronic tagging techniques in conjunction with dietary analysis. Dietary data were collected from 323 silky sharks incidentally caught at FADs. Approximately 40 percent of the diet consisted of prey associated with FADs while the remaining 60 percent were non-associated species of crustaceans, cephalopods and fishes. These results suggest that the associative behaviour is not primarily driven by trophic enhancement, but is likely a combination of predator avoidance, social interactions and feeding. Fine-scale behavioural data from silky sharks associated with drifting FADs were collected through the use of acoustic telemetry techniques. Acoustic tags were implanted into 38 silky sharks (69- 116 cm TL) at eight FADs. FADs were equipped with satellite linked acoustic receivers and abandoned to drift freely. Presence/absence and swimming depth data were telemetered via the Iridium satellite system. A total of 300 d of behavioural data were collected from 20 tagged individuals. Individuals remain associated with the same FAD for extended periods (min = 2.84 d, max = 30.60 d, mean = 15.69 d). Strong diel patterns were observed in both association and swimming depth. Typically individuals moved away from FADs after sunset and return later during the night, then remain closely associated until the following evening. Vertical behaviour also changed around sunset with sharks using fairly constant depths, within the upper 25 m, during the day and switching to rapid vertical movements during the night, with dives in excess of 250 m recoded. Broader scale movement behaviour was investigated using pop-up archival satellite tags (PSATs). Tags were deployed on 46 silky sharks (86-224.5 cm TL) for a total of 1495 d. Light data were used to calculate geolocation estimates and reconstruct the sharks’ trajectories. Movement patterns differed between animals and according to deployment duration. Several extensive horizontal movements were observed, with an average track length of 3240 km during an average tag deployment of 44.02 d. Horizontal movement patterns were found to correlate very closely with drift patterns of FADs. Consequently, it appears that the movement behaviour of juvenile silky sharks is strongly influenced by the movement of drifting FADs in this region. Ghost fishing of silky sharks through entanglement in FADs was also investigated using data derived from PSATs as well as underwater visual censuses. Thirteen per cent of the tagged sharks became entangled in FADs and entangled sharks were observed in 35 percent of the 51 FADs surveyed. Using this information in conjunction with estimated time that sharks remained entangled in the FAD (from depth data from PSATs), and scaling up according to estimates of FAD numbers, it was found that between 480 000 and 960 000 silky sharks are killed annually in this manner in the Indian Ocean. Subsequent management measures in this region prevent the deployment of FADs with netting that could lead to entanglement. Overall, floating objects appear to play a significant role in the juvenile life stages of silky sharks in this region. While their association with floating objects is clearly advantageous in an evolutionary sense, under current tuna fishery trends, this behaviour is certainly detrimental for the population.
- Full Text:
- Date Issued: 2015
- Authors: Filmalter, John David
- Date: 2015
- Subjects: Silky shark , Silky shark -- Behavior , Silky shark -- Marking , Silky shark -- Food , Tuna fisheries -- Bycatches , Fish aggregation devices , Underwater acoustic telemetry , Fish tagging
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5381 , http://hdl.handle.net/10962/d1018177
- Description: The silky shark Carcharhinus falciformis forms the primary elasmobranch bycatch in tuna purse seine fisheries using fish aggregating devices (FADs) in all of the world’s tropical oceans. Its life-history traits of slow growth, late maturation and low fecundity make it vulnerable to over exploitation, as is apparent from historical bycatch trends. Very little is known about the associative behaviour of this species with floating objects, information which is essential in formulating effective mitigation and management measures. This study aims to address this knowledge gap through the use of various electronic tagging techniques in conjunction with dietary analysis. Dietary data were collected from 323 silky sharks incidentally caught at FADs. Approximately 40 percent of the diet consisted of prey associated with FADs while the remaining 60 percent were non-associated species of crustaceans, cephalopods and fishes. These results suggest that the associative behaviour is not primarily driven by trophic enhancement, but is likely a combination of predator avoidance, social interactions and feeding. Fine-scale behavioural data from silky sharks associated with drifting FADs were collected through the use of acoustic telemetry techniques. Acoustic tags were implanted into 38 silky sharks (69- 116 cm TL) at eight FADs. FADs were equipped with satellite linked acoustic receivers and abandoned to drift freely. Presence/absence and swimming depth data were telemetered via the Iridium satellite system. A total of 300 d of behavioural data were collected from 20 tagged individuals. Individuals remain associated with the same FAD for extended periods (min = 2.84 d, max = 30.60 d, mean = 15.69 d). Strong diel patterns were observed in both association and swimming depth. Typically individuals moved away from FADs after sunset and return later during the night, then remain closely associated until the following evening. Vertical behaviour also changed around sunset with sharks using fairly constant depths, within the upper 25 m, during the day and switching to rapid vertical movements during the night, with dives in excess of 250 m recoded. Broader scale movement behaviour was investigated using pop-up archival satellite tags (PSATs). Tags were deployed on 46 silky sharks (86-224.5 cm TL) for a total of 1495 d. Light data were used to calculate geolocation estimates and reconstruct the sharks’ trajectories. Movement patterns differed between animals and according to deployment duration. Several extensive horizontal movements were observed, with an average track length of 3240 km during an average tag deployment of 44.02 d. Horizontal movement patterns were found to correlate very closely with drift patterns of FADs. Consequently, it appears that the movement behaviour of juvenile silky sharks is strongly influenced by the movement of drifting FADs in this region. Ghost fishing of silky sharks through entanglement in FADs was also investigated using data derived from PSATs as well as underwater visual censuses. Thirteen per cent of the tagged sharks became entangled in FADs and entangled sharks were observed in 35 percent of the 51 FADs surveyed. Using this information in conjunction with estimated time that sharks remained entangled in the FAD (from depth data from PSATs), and scaling up according to estimates of FAD numbers, it was found that between 480 000 and 960 000 silky sharks are killed annually in this manner in the Indian Ocean. Subsequent management measures in this region prevent the deployment of FADs with netting that could lead to entanglement. Overall, floating objects appear to play a significant role in the juvenile life stages of silky sharks in this region. While their association with floating objects is clearly advantageous in an evolutionary sense, under current tuna fishery trends, this behaviour is certainly detrimental for the population.
- Full Text:
- Date Issued: 2015
The black and its double : the crisis of self-representation in protest and ‘post’-protest black South African fiction
- Authors: Kenqu, Amanda Yolisa
- Date: 2015
- Subjects: Serote, Mongane Wally, 1944- -- Criticism and interpretation , Duiker, K. Sello -- Criticism and interpretation , Matlwa, Kopano -- Criticism and interpretation , Black people in literature , Race in literature , Protest literature, African (English) , Mimesis in literature , Black people -- Race identity -- South Africa , Serote, Mongane Wally, 1944- -- To every birth Its blood , Duiker, K. Sello -- Thirteen cents , Matlwa, Kopano -- Coconut
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2331 , http://hdl.handle.net/10962/d1020835
- Description: This study explores the crisis of representation in black South African protest and ‘post’-apartheid literature. Conversant with the debates on the crisis of representation in black South African protest literature from the 1960s to the late 1980s, the dissertation proposes a re-reading of the ‘crisis’ by locating it in the black writer’s struggle for an aesthetic with which to express the existential crisis of blackness. I contend that not only protest but also contemporary or ‘post’-protest black South African literature exhibits a split or fractured mode of writing which is characterised by the displacement/unheimlichheid produced by colonialism and apartheid, as well as by the contentious nature of that which this literature endeavours to capture – the fraught identity of blackness. In my exploration of the split or double narratives of Mongane Serote’s To Every Birth Its Blood, K. Sello Duiker’s Thirteen Cents, and Kopano Matlwa’s Coconut, I examine the representation of blackness through the themes of violence, trauma, powerlessness, failure, and unhomeliness/unbelongingness – all of which suggest the lack of a solid foundation upon which to construct a stable black identity. This instability, I ultimately argue, suggests a move beyond an Afrocentric perspective on identity and traditional tropes of blackness towards a more processual, fluid, and permeable post-black politics.
- Full Text:
- Date Issued: 2015
- Authors: Kenqu, Amanda Yolisa
- Date: 2015
- Subjects: Serote, Mongane Wally, 1944- -- Criticism and interpretation , Duiker, K. Sello -- Criticism and interpretation , Matlwa, Kopano -- Criticism and interpretation , Black people in literature , Race in literature , Protest literature, African (English) , Mimesis in literature , Black people -- Race identity -- South Africa , Serote, Mongane Wally, 1944- -- To every birth Its blood , Duiker, K. Sello -- Thirteen cents , Matlwa, Kopano -- Coconut
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2331 , http://hdl.handle.net/10962/d1020835
- Description: This study explores the crisis of representation in black South African protest and ‘post’-apartheid literature. Conversant with the debates on the crisis of representation in black South African protest literature from the 1960s to the late 1980s, the dissertation proposes a re-reading of the ‘crisis’ by locating it in the black writer’s struggle for an aesthetic with which to express the existential crisis of blackness. I contend that not only protest but also contemporary or ‘post’-protest black South African literature exhibits a split or fractured mode of writing which is characterised by the displacement/unheimlichheid produced by colonialism and apartheid, as well as by the contentious nature of that which this literature endeavours to capture – the fraught identity of blackness. In my exploration of the split or double narratives of Mongane Serote’s To Every Birth Its Blood, K. Sello Duiker’s Thirteen Cents, and Kopano Matlwa’s Coconut, I examine the representation of blackness through the themes of violence, trauma, powerlessness, failure, and unhomeliness/unbelongingness – all of which suggest the lack of a solid foundation upon which to construct a stable black identity. This instability, I ultimately argue, suggests a move beyond an Afrocentric perspective on identity and traditional tropes of blackness towards a more processual, fluid, and permeable post-black politics.
- Full Text:
- Date Issued: 2015
Being for others : critical reflections on the stranger, the estranged and the self in participatory art
- Authors: Munro, Samantha Fawn
- Date: 2015
- Subjects: Self , Identity (Philosophical concept) in art , Alienation (Philosophy) , Interactive art , Art appreciation , Art exhibition audiences , Interactive art -- Themes, motives , Social interaction
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2507 , http://hdl.handle.net/10962/d1017771
- Description: By referring to established concepts and theories which contemplate our experiences in relation to others and space, this thesis examines the interactions and responses of an audience during various participatory artworks. I draw upon Jean-Paul Sartre’s Being and Nothingness and Elizabeth Grosz’ Architecture From The Outside: Essays on Virtual and Real Space in order to understand our interactions with other people, our interactions inside an environment, and the objects and ceremonies we use during these interactions. I align these experiences with the methods which are employed to anticipate and create the interactions between an audience and a participatory artwork. Our daily interactions can be considered a frame that an artist shapes for their represented situation to allow, provide and guide an audience towards their possibilities for movements and actions within a participatory artwork. The interactions that occur in participatory art are done in relation to others and include groups of people interacting with each other rather than an individual disembodied experience. I refer to Claire Bishop in her book, Artificial Hells, and Nicolas Bourriaud in Relational Aesthetics in order to define participatory art. In defining participatory art I focus on the idea that participation is a social activity without which the artwork does not function or exist. I unravel Brett Bailey’s Exhibit A, Anthea Moys Anthea Moys vs The City of Grahamstown and Christian Boltanski’s Personnes in terms of the frame they use to construct participation and interaction. I refer to my own exhibition Ineffaceable as an exploration of these frames which encourage participation. The inside and the outside are a constant theme throughout this thesis and my exhibition. This thematic re-emerges in relation to a number of opposing and fluctuating dynamics: the self and the other; the object and the subject; familiarity and strangeness; the participator and the spectator; the immersive and the disembodied; and the artwork and the audience. Participatory art has not been sufficiently explored particularly in South Africa with South African case studies and particularly from a practical standpoint that includes methodologies for creating participation. This thesis hopes to enrich and contribute to the contemplations on participatory art by focusing on our interactions with others.
- Full Text:
- Date Issued: 2015
- Authors: Munro, Samantha Fawn
- Date: 2015
- Subjects: Self , Identity (Philosophical concept) in art , Alienation (Philosophy) , Interactive art , Art appreciation , Art exhibition audiences , Interactive art -- Themes, motives , Social interaction
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2507 , http://hdl.handle.net/10962/d1017771
- Description: By referring to established concepts and theories which contemplate our experiences in relation to others and space, this thesis examines the interactions and responses of an audience during various participatory artworks. I draw upon Jean-Paul Sartre’s Being and Nothingness and Elizabeth Grosz’ Architecture From The Outside: Essays on Virtual and Real Space in order to understand our interactions with other people, our interactions inside an environment, and the objects and ceremonies we use during these interactions. I align these experiences with the methods which are employed to anticipate and create the interactions between an audience and a participatory artwork. Our daily interactions can be considered a frame that an artist shapes for their represented situation to allow, provide and guide an audience towards their possibilities for movements and actions within a participatory artwork. The interactions that occur in participatory art are done in relation to others and include groups of people interacting with each other rather than an individual disembodied experience. I refer to Claire Bishop in her book, Artificial Hells, and Nicolas Bourriaud in Relational Aesthetics in order to define participatory art. In defining participatory art I focus on the idea that participation is a social activity without which the artwork does not function or exist. I unravel Brett Bailey’s Exhibit A, Anthea Moys Anthea Moys vs The City of Grahamstown and Christian Boltanski’s Personnes in terms of the frame they use to construct participation and interaction. I refer to my own exhibition Ineffaceable as an exploration of these frames which encourage participation. The inside and the outside are a constant theme throughout this thesis and my exhibition. This thematic re-emerges in relation to a number of opposing and fluctuating dynamics: the self and the other; the object and the subject; familiarity and strangeness; the participator and the spectator; the immersive and the disembodied; and the artwork and the audience. Participatory art has not been sufficiently explored particularly in South Africa with South African case studies and particularly from a practical standpoint that includes methodologies for creating participation. This thesis hopes to enrich and contribute to the contemplations on participatory art by focusing on our interactions with others.
- Full Text:
- Date Issued: 2015
Electrode surface modification using metallophthalocyanines and metal nanoparticles : electrocatalytic activity
- Authors: Maringa, Audacity
- Date: 2015
- Subjects: Phthalocyanines , Nanoparticles , Electrocatalysis , Scanning electron microscopy , X-ray photoelectron spectroscopy , Electrochemistry , Scanning electrochemical microscopy
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4541 , http://hdl.handle.net/10962/d1017921
- Description: Metallophthalocyanines and metal nanoparticles were successfully synthesized and applied for the electrooxidation of amitrole, nitrite and hydrazine individually or when employed together. The synthesized materials were characterized using the following techniques: predominantly scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), electrochemistry and scanning electrochemical microscopy (SECM). Different electrode modification methods were used to modify the glassy carbon substrates. The methods include adsorption, electrodeposition, electropolymerization and click chemistry. Modifying the glassy carbon substrate with MPc (electropolymerization) followed by metal nanoparticles (electrodeposition) or vice versa, made a hybrid modified surface that had efficient electron transfer. This was confirmed by electrochemical impedance studies with voltammetry measurements having lower detection potentials for the analytes. This work also describes for the first time the micropatterning of the glassy carbon substrate using the SECM tip. The substrate was electrografted with 4-azidobenzenediazonium salt and then the click reaction was performed using ethynylferrocene facilitated by Cu⁺ produced at the SECM tip. The SECM imaging was then used to show the clicked spot.
- Full Text:
- Date Issued: 2015
- Authors: Maringa, Audacity
- Date: 2015
- Subjects: Phthalocyanines , Nanoparticles , Electrocatalysis , Scanning electron microscopy , X-ray photoelectron spectroscopy , Electrochemistry , Scanning electrochemical microscopy
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4541 , http://hdl.handle.net/10962/d1017921
- Description: Metallophthalocyanines and metal nanoparticles were successfully synthesized and applied for the electrooxidation of amitrole, nitrite and hydrazine individually or when employed together. The synthesized materials were characterized using the following techniques: predominantly scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), electrochemistry and scanning electrochemical microscopy (SECM). Different electrode modification methods were used to modify the glassy carbon substrates. The methods include adsorption, electrodeposition, electropolymerization and click chemistry. Modifying the glassy carbon substrate with MPc (electropolymerization) followed by metal nanoparticles (electrodeposition) or vice versa, made a hybrid modified surface that had efficient electron transfer. This was confirmed by electrochemical impedance studies with voltammetry measurements having lower detection potentials for the analytes. This work also describes for the first time the micropatterning of the glassy carbon substrate using the SECM tip. The substrate was electrografted with 4-azidobenzenediazonium salt and then the click reaction was performed using ethynylferrocene facilitated by Cu⁺ produced at the SECM tip. The SECM imaging was then used to show the clicked spot.
- Full Text:
- Date Issued: 2015
The trophic ecology of the endangered endemic Barau's Petrel (Pterodroma baraui) from Reunion Island, south-western Indian Ocean
- Authors: Danckwerts, Daniel Keith
- Date: 2015
- Subjects: Petrels -- Réunion , Pterodroma baraui , Ecology -- Réunion
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5925 , http://hdl.handle.net/10962/d1017803
- Description: Réunion is the only tropical island that supports two endemic gadfly petrels. Population modelling has indicated that the current threats to the Barau’s Petrel (Pterodroma baraui) may drive it to extinction; this fate is almost definite for the Mascarene Petrel (Pseudobulweria aterrima). Management interventions have therefore been implemented, but conservation potential is handicapped since virtually nothing is known about the former species’ at-sea biology. Thus, following numerous recommendations, this study aimed to combine stomach content, stable isotope, and fatty acid analyses so to provide new information on the at-sea ecology of Barau’s Petrel. Breeding colonies were repeatedly visited over the same season and samples gathered from adults, fledglings, and downy chicks. Stomach contents consisted mostly of accumulated cephalopod beaks whereas structures from fishes, molluscs, arthropods, and crustaceans were less frequently encountered. Fatty acid profiles of blood varied greatly among individuals and the lowincidences of monounsaturated and n-3 fatty acids discounted fish as an important dietary component. δ¹⁵N of blood indicated a niche between the fourth and fifth trophic levels, which proposes that these birds scavenge to a greater degree than other sympatric seabirds and suggests that adults are also reliant on their endogenous reserves during breeding. δ¹³C values confirmed the migratory behaviour of adults since birds returning from the non-breeding grounds were enriched relative to individuals sampled through the breeding period. Significant intra-breeding season variations in δ13C were also observed, which matched this species’ patterns of habitat use as have recently described. These results collectively indicate an opportunistic behaviour, which implies some degree of resilience against shifts in prey availability/accessibility, and suggest that this species’ reproduction isdependent on distant foraging areas. This breeding strategy is synonymous with great vulnerability as over-investing into a single breeding episode may jeopardize future survival and fecundity. Thus, in light of environmental conditions that are becoming increasingly more susceptible to dramatic changes, the birds could rather be prioritising adult survival, over reproductive output. Further work is obviously necessary and should benefit from databases of fatty acid profiles and isotope signatures of potential prey species.
- Full Text:
- Date Issued: 2015
- Authors: Danckwerts, Daniel Keith
- Date: 2015
- Subjects: Petrels -- Réunion , Pterodroma baraui , Ecology -- Réunion
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5925 , http://hdl.handle.net/10962/d1017803
- Description: Réunion is the only tropical island that supports two endemic gadfly petrels. Population modelling has indicated that the current threats to the Barau’s Petrel (Pterodroma baraui) may drive it to extinction; this fate is almost definite for the Mascarene Petrel (Pseudobulweria aterrima). Management interventions have therefore been implemented, but conservation potential is handicapped since virtually nothing is known about the former species’ at-sea biology. Thus, following numerous recommendations, this study aimed to combine stomach content, stable isotope, and fatty acid analyses so to provide new information on the at-sea ecology of Barau’s Petrel. Breeding colonies were repeatedly visited over the same season and samples gathered from adults, fledglings, and downy chicks. Stomach contents consisted mostly of accumulated cephalopod beaks whereas structures from fishes, molluscs, arthropods, and crustaceans were less frequently encountered. Fatty acid profiles of blood varied greatly among individuals and the lowincidences of monounsaturated and n-3 fatty acids discounted fish as an important dietary component. δ¹⁵N of blood indicated a niche between the fourth and fifth trophic levels, which proposes that these birds scavenge to a greater degree than other sympatric seabirds and suggests that adults are also reliant on their endogenous reserves during breeding. δ¹³C values confirmed the migratory behaviour of adults since birds returning from the non-breeding grounds were enriched relative to individuals sampled through the breeding period. Significant intra-breeding season variations in δ13C were also observed, which matched this species’ patterns of habitat use as have recently described. These results collectively indicate an opportunistic behaviour, which implies some degree of resilience against shifts in prey availability/accessibility, and suggest that this species’ reproduction isdependent on distant foraging areas. This breeding strategy is synonymous with great vulnerability as over-investing into a single breeding episode may jeopardize future survival and fecundity. Thus, in light of environmental conditions that are becoming increasingly more susceptible to dramatic changes, the birds could rather be prioritising adult survival, over reproductive output. Further work is obviously necessary and should benefit from databases of fatty acid profiles and isotope signatures of potential prey species.
- Full Text:
- Date Issued: 2015
Understanding climate variability and livelihoods adaptation in rural Zimbabwe : case of Charewa, Mutoko
- Authors: Bhatasara, Sandra
- Date: 2015
- Subjects: Climatic changes -- Zimbabwe -- Mutoko , Sustainable agriculture -- Zimbabwe -- Mutoko , Environmental impact analysis -- Zimbabwe -- Mutoko , Farmers -- Zimbabwe -- Mutoko -- Economic conditions , Food supply -- Zimbabwe -- Mutoko , Farms -- Zimbabwe -- Mutoko , Land use, Rural -- Zimbabwe -- Mutoko , Crops and climate -- Zimbabwe -- Mutoko
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3403 , http://hdl.handle.net/10962/d1018928 , Climatic changes -- Zimbabwe -- Mutoko , Sustainable agriculture -- Zimbabwe -- Mutoko , Environmental impact analysis -- Zimbabwe -- Mutoko , Farmers -- Zimbabwe -- Mutoko -- Economic conditions , Food supply -- Zimbabwe -- Mutoko , Farms -- Zimbabwe -- Mutoko , Land use, Rural -- Zimbabwe -- Mutoko , Crops and climate -- Zimbabwe -- Mutoko
- Description: Rural farmers in Zimbabwe have been grappling with various changes and challenges occurring in the country since the early 1990s. Amongst these, climate variability has emerged as one significant aspect. It has introduced new challenges for these farmers who are already facing various difficulties in maintaining their insecure livelihoods. Yet, current adaptation theories and inquiries have failed to sufficiently account for and analyse the capacity of these farmers to adequately respond to changing climatic conditions. In this respect, a number of studies have been heavily embedded in deterministic concepts that regard rural farmers as passive victims who play only a minor part in decisions and actions that affect their own livelihoods and well-being. Similarly, although some studies have acknowledged farmers’ capacity to adapt and build elements of resilience, they have not adequately shown how farmers interpret changes in climate and the structures, processes and conditions underpinning adaptation. Following that, my study uses a case study of a rural community in a semi-arid region of Mutoko district in eastern Zimbabwe and Margaret Archer’s sociological theory to understand and analyse how farmers problematise climate variability and respond to it. The study utilises a qualitative approach to divulge the subtleties on how rural people interpret processes of change and adapt to such changes. The thesis found that farmers are encountering increasingly unpredictable and unreliable rainfall patterns as well as shifting temperature conditions which are inducing labyrinthian livelihoods conundrums. However, these climatic shifts are not being experienced in a discrete manner hence farmers are also discontented with the obtaining socio-economic circumstances in the country. Simultaneously, whilst farmers in large part conceived changes in rainfall and temperature to be caused by natural shifts in climate, they also ascribed them to cultural and religious facets. Importantly, the thesis reveals considerable resourcefulness by farmers in the face of nascent changes in climate variability. Farmers have therefore constructed versatile coping and adaptive strategies. What is crucial to mention here is that climatic and non-climatic challenges are negotiated concurrently. Therein, farmers are adapting to climate variability and at the same time navigating difficult socio-economic landscapes. All the same, the process of adaptation is ostensibly not straightforward but complex. As it evolves, farmers find themselves facing numerous constraining structures and processes. Nonetheless, farmers in this study are able to circumvent the constraints presented to them and at the same time activate the corresponding enabling structures, processes and conditions.
- Full Text:
- Date Issued: 2015
- Authors: Bhatasara, Sandra
- Date: 2015
- Subjects: Climatic changes -- Zimbabwe -- Mutoko , Sustainable agriculture -- Zimbabwe -- Mutoko , Environmental impact analysis -- Zimbabwe -- Mutoko , Farmers -- Zimbabwe -- Mutoko -- Economic conditions , Food supply -- Zimbabwe -- Mutoko , Farms -- Zimbabwe -- Mutoko , Land use, Rural -- Zimbabwe -- Mutoko , Crops and climate -- Zimbabwe -- Mutoko
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3403 , http://hdl.handle.net/10962/d1018928 , Climatic changes -- Zimbabwe -- Mutoko , Sustainable agriculture -- Zimbabwe -- Mutoko , Environmental impact analysis -- Zimbabwe -- Mutoko , Farmers -- Zimbabwe -- Mutoko -- Economic conditions , Food supply -- Zimbabwe -- Mutoko , Farms -- Zimbabwe -- Mutoko , Land use, Rural -- Zimbabwe -- Mutoko , Crops and climate -- Zimbabwe -- Mutoko
- Description: Rural farmers in Zimbabwe have been grappling with various changes and challenges occurring in the country since the early 1990s. Amongst these, climate variability has emerged as one significant aspect. It has introduced new challenges for these farmers who are already facing various difficulties in maintaining their insecure livelihoods. Yet, current adaptation theories and inquiries have failed to sufficiently account for and analyse the capacity of these farmers to adequately respond to changing climatic conditions. In this respect, a number of studies have been heavily embedded in deterministic concepts that regard rural farmers as passive victims who play only a minor part in decisions and actions that affect their own livelihoods and well-being. Similarly, although some studies have acknowledged farmers’ capacity to adapt and build elements of resilience, they have not adequately shown how farmers interpret changes in climate and the structures, processes and conditions underpinning adaptation. Following that, my study uses a case study of a rural community in a semi-arid region of Mutoko district in eastern Zimbabwe and Margaret Archer’s sociological theory to understand and analyse how farmers problematise climate variability and respond to it. The study utilises a qualitative approach to divulge the subtleties on how rural people interpret processes of change and adapt to such changes. The thesis found that farmers are encountering increasingly unpredictable and unreliable rainfall patterns as well as shifting temperature conditions which are inducing labyrinthian livelihoods conundrums. However, these climatic shifts are not being experienced in a discrete manner hence farmers are also discontented with the obtaining socio-economic circumstances in the country. Simultaneously, whilst farmers in large part conceived changes in rainfall and temperature to be caused by natural shifts in climate, they also ascribed them to cultural and religious facets. Importantly, the thesis reveals considerable resourcefulness by farmers in the face of nascent changes in climate variability. Farmers have therefore constructed versatile coping and adaptive strategies. What is crucial to mention here is that climatic and non-climatic challenges are negotiated concurrently. Therein, farmers are adapting to climate variability and at the same time navigating difficult socio-economic landscapes. All the same, the process of adaptation is ostensibly not straightforward but complex. As it evolves, farmers find themselves facing numerous constraining structures and processes. Nonetheless, farmers in this study are able to circumvent the constraints presented to them and at the same time activate the corresponding enabling structures, processes and conditions.
- Full Text:
- Date Issued: 2015
Exploring the relationship between an "English-only" language-in-education policy and bilingual practices in secondary schools in Zanzibar
- Authors: Maalim, Haroun Ayoub
- Date: 2015
- Subjects: Language and education -- Zanzibar , Native language and education -- Zanzibar , Code switching (Linguistics) -- Zanzibar , Language policy -- Zanzibar
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3650 , http://hdl.handle.net/10962/d1017891
- Description: This thesis reports on the relationship between an English-only language-ineducation policy and bilingual practices in secondary schools in Zanzibar. The focus is on language use in the classroom against the backdrop of a top-down and English-only language-in-education policy. The main purpose has been to gain an in-depth understanding of the relationship between the stipulations of the policy which was imposed from above and the judicious bilingual practices which are a commonly accepted as the norm in secondary schools in Zanzibar. The study employed a mixed method approach (QUAL+quant) and embraced elements of ethnography. The data for this study was gathered from two secondary schools which were purposively selected on the basis of parameters that were set in this study. Among other things, these include the secondary schools which have both ‘Ordinary level’ and ‘Advance level’, and the schools which teach the same subject using Kiswahili as the language of learning and teaching at one level, and English as the language of learning and teaching at another level. Data were obtained from multiple sources. On the one hand, through ethnography, classroom observations, semi-structured interviews and focus group discussions with teachers and students, and interviews with key actors were conducted. On the other hand, students’ test scripts, and students’ test and examination results (scores) were analysed. Both purposive and random sampling were used to get the participants. Drawing from Ruiz’s (1984) seminal tripartite orientations of language planning (language as right, language as problem, and language as resource) thematic analysis, content analysis, and the Statistical Package for the Social Sciences (SPSS) were used to analyse data. The findings reveal that the use of bilingual (English and Kiswahili) in English medium subjects is a resource rather than a deficit since an overwhelming majority of students and some teachers cannot function positively in the topdown English-only language-in-education policy. Most significantly, teachers use Kiswahili in English medium subjects as a strategy for teaching terminologies, abstract concepts, and unfamiliar topics, as well as for clarification of ideas and for comprehension check. The study further indicates that the examinations and tests of English medium subjects do not assess what is exactly intended to be assessed (subject matter), but instead they assess English language. In addition, empirical evidence shows that language is a factor for students’ achievements in that students performed considerably better when the subjects were assessed in Kiswahili compared to the same subjects assessed in English. The findings further reveal that Kiswahili is suitable to be used as a sole language of learning and teaching in secondary schools of Zanzibar. Based on these findings, the study recommends that the use of Kiswahili in English medium subjects should be officially recognised and students should be given options of the language of assessment as an urgent step. Furthermore, given the urgency of the need for improving students’ performance, it is now high time to introduce Kiswahili medium of instruction secondary schools in Zanzibar which should co-exist with English medium of instruction secondary schools.
- Full Text:
- Date Issued: 2015
- Authors: Maalim, Haroun Ayoub
- Date: 2015
- Subjects: Language and education -- Zanzibar , Native language and education -- Zanzibar , Code switching (Linguistics) -- Zanzibar , Language policy -- Zanzibar
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3650 , http://hdl.handle.net/10962/d1017891
- Description: This thesis reports on the relationship between an English-only language-ineducation policy and bilingual practices in secondary schools in Zanzibar. The focus is on language use in the classroom against the backdrop of a top-down and English-only language-in-education policy. The main purpose has been to gain an in-depth understanding of the relationship between the stipulations of the policy which was imposed from above and the judicious bilingual practices which are a commonly accepted as the norm in secondary schools in Zanzibar. The study employed a mixed method approach (QUAL+quant) and embraced elements of ethnography. The data for this study was gathered from two secondary schools which were purposively selected on the basis of parameters that were set in this study. Among other things, these include the secondary schools which have both ‘Ordinary level’ and ‘Advance level’, and the schools which teach the same subject using Kiswahili as the language of learning and teaching at one level, and English as the language of learning and teaching at another level. Data were obtained from multiple sources. On the one hand, through ethnography, classroom observations, semi-structured interviews and focus group discussions with teachers and students, and interviews with key actors were conducted. On the other hand, students’ test scripts, and students’ test and examination results (scores) were analysed. Both purposive and random sampling were used to get the participants. Drawing from Ruiz’s (1984) seminal tripartite orientations of language planning (language as right, language as problem, and language as resource) thematic analysis, content analysis, and the Statistical Package for the Social Sciences (SPSS) were used to analyse data. The findings reveal that the use of bilingual (English and Kiswahili) in English medium subjects is a resource rather than a deficit since an overwhelming majority of students and some teachers cannot function positively in the topdown English-only language-in-education policy. Most significantly, teachers use Kiswahili in English medium subjects as a strategy for teaching terminologies, abstract concepts, and unfamiliar topics, as well as for clarification of ideas and for comprehension check. The study further indicates that the examinations and tests of English medium subjects do not assess what is exactly intended to be assessed (subject matter), but instead they assess English language. In addition, empirical evidence shows that language is a factor for students’ achievements in that students performed considerably better when the subjects were assessed in Kiswahili compared to the same subjects assessed in English. The findings further reveal that Kiswahili is suitable to be used as a sole language of learning and teaching in secondary schools of Zanzibar. Based on these findings, the study recommends that the use of Kiswahili in English medium subjects should be officially recognised and students should be given options of the language of assessment as an urgent step. Furthermore, given the urgency of the need for improving students’ performance, it is now high time to introduce Kiswahili medium of instruction secondary schools in Zanzibar which should co-exist with English medium of instruction secondary schools.
- Full Text:
- Date Issued: 2015
A case study of Siemens Afghanistan : building a country, building a company
- Authors: Qaleej, Raaz Hassan
- Date: 2015
- Subjects: Siemens Aktiengesellschaft , Corporate culture -- Afghanistan , Employees -- Attitudes , Industrial relations -- Afghanistan
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:854 , http://hdl.handle.net/10962/d1017522
- Description: This case study was written within the broader concept of Organisational Culture and how it is integrated into an organisation to encourage responsible leadership. The core focus and emphasis of this approach is to establish the implications for businesses operating in the most challenging of commercial environments, while adhering to their corporate ethos and organisational values. These may be summarised with the phrase: Only a clean business is a sustainable business. This dissertation is intended to act as a case study and resource aide for the teaching of leadership, organisational behaviour, human resources and business sustainability. The study is about the Afghanistan chapter of the global giant Siemens, which has been working in many areas of specialisation conducting business in the country for more than 75 years. It has been selected for this case study because of its long-term impressive record, during which time it has developed and sustained a reputation as an organisation with a much-admired organisational culture, and one to which employees feel very closely attached and connected. This case study evolved from a set of unique as well as difficult circumstances. In Afghanistan, where infrastructure is weak, businesses and other structured organisations are in their initial and immature stages of development, and employee attachment to their workplaces is relatively weak. In the case of Siemens however, it has been much the opposite. It became apparent over a protracted period of time that the relationship of employees to the company was clearly of a positive and committed nature, unlike the general perception stemming from other multinational organisations operating within the country. Many business organisations in Afghanistan tend to emphasise to a lesser degree some modern-day practices of employer-employee relationships, which negatively affect motivation and commitment. The study grew out of the observations that employees of Siemens on the other hand, seemed to exhibit attitudes and commitments contrary to the general trend in the wider business sector. This project began with the intention to identify those factors contributing to employee loyalty and strong attachments to an organisation. Subsequently, the same findings were used to identify the traits and particular features working within the organisational environment.
- Full Text:
- Date Issued: 2015
- Authors: Qaleej, Raaz Hassan
- Date: 2015
- Subjects: Siemens Aktiengesellschaft , Corporate culture -- Afghanistan , Employees -- Attitudes , Industrial relations -- Afghanistan
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:854 , http://hdl.handle.net/10962/d1017522
- Description: This case study was written within the broader concept of Organisational Culture and how it is integrated into an organisation to encourage responsible leadership. The core focus and emphasis of this approach is to establish the implications for businesses operating in the most challenging of commercial environments, while adhering to their corporate ethos and organisational values. These may be summarised with the phrase: Only a clean business is a sustainable business. This dissertation is intended to act as a case study and resource aide for the teaching of leadership, organisational behaviour, human resources and business sustainability. The study is about the Afghanistan chapter of the global giant Siemens, which has been working in many areas of specialisation conducting business in the country for more than 75 years. It has been selected for this case study because of its long-term impressive record, during which time it has developed and sustained a reputation as an organisation with a much-admired organisational culture, and one to which employees feel very closely attached and connected. This case study evolved from a set of unique as well as difficult circumstances. In Afghanistan, where infrastructure is weak, businesses and other structured organisations are in their initial and immature stages of development, and employee attachment to their workplaces is relatively weak. In the case of Siemens however, it has been much the opposite. It became apparent over a protracted period of time that the relationship of employees to the company was clearly of a positive and committed nature, unlike the general perception stemming from other multinational organisations operating within the country. Many business organisations in Afghanistan tend to emphasise to a lesser degree some modern-day practices of employer-employee relationships, which negatively affect motivation and commitment. The study grew out of the observations that employees of Siemens on the other hand, seemed to exhibit attitudes and commitments contrary to the general trend in the wider business sector. This project began with the intention to identify those factors contributing to employee loyalty and strong attachments to an organisation. Subsequently, the same findings were used to identify the traits and particular features working within the organisational environment.
- Full Text:
- Date Issued: 2015
Love in a cold war
- Authors: Christenson, Anna
- Date: 2015
- Subjects: South African fiction (English) -- 21st century
- Language: English
- Type: text , Thesis , Masters , MA
- Identifier: vital:5988
- Description: A collection of short stories in two parts written in realist and fabulist styles. The first part looks at the post-war generation of baby boomers growing up in the American Midwest. The second half follows an American abroad and explores themes of disintegration, the shifting power balance in relationships and the terrible hole at the core of expatriate identity.
- Full Text:
- Date Issued: 2015
- Authors: Christenson, Anna
- Date: 2015
- Subjects: South African fiction (English) -- 21st century
- Language: English
- Type: text , Thesis , Masters , MA
- Identifier: vital:5988
- Description: A collection of short stories in two parts written in realist and fabulist styles. The first part looks at the post-war generation of baby boomers growing up in the American Midwest. The second half follows an American abroad and explores themes of disintegration, the shifting power balance in relationships and the terrible hole at the core of expatriate identity.
- Full Text:
- Date Issued: 2015
Bitten
- Authors: Sullivan, Louella
- Date: 2015
- Subjects: Creative writing (Higher education) , South African poetry (English) -- Study and teaching (Higher) , South African poerty (English) -- 21st century
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:5994 , http://hdl.handle.net/10962/d1017778
- Description: My poetry investigates the extraordinary in the everyday, exploring my life as a mother and wife, to find the quiet truths that lie there. Using fresh ways of describing familiar experiences, the poems describe tiny, almost-missed moments and voices that have shaped me. Throughout the collection, I imagine my younger selves commenting on my current self and vice versa. Ultimately, my poems use simple words and clean lines to evoke how I feel (and how I want the reader to feel) in each of the moments they describe.
- Full Text:
- Date Issued: 2015
- Authors: Sullivan, Louella
- Date: 2015
- Subjects: Creative writing (Higher education) , South African poetry (English) -- Study and teaching (Higher) , South African poerty (English) -- 21st century
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:5994 , http://hdl.handle.net/10962/d1017778
- Description: My poetry investigates the extraordinary in the everyday, exploring my life as a mother and wife, to find the quiet truths that lie there. Using fresh ways of describing familiar experiences, the poems describe tiny, almost-missed moments and voices that have shaped me. Throughout the collection, I imagine my younger selves commenting on my current self and vice versa. Ultimately, my poems use simple words and clean lines to evoke how I feel (and how I want the reader to feel) in each of the moments they describe.
- Full Text:
- Date Issued: 2015
In search of the comprador: self-exoticisation in selected texts from the South Asian and Middle Eastern diasporas
- Authors: Shabangu, Mohammad
- Date: 2015
- Subjects: Rushdie, Salman. Midnight's children -- Criticism and interpretation , Kureishi, Hanif. Buddha of suburbia -- Criticism and interpretation , Hosseini, Khaled. Kite runner -- Criticism and interpretation , Hosseini, Khaled. Thousand splendid suns -- Criticism and interpretation , Compradors , Exoticism in literature , Literature and transnationalism -- Middle East , Literature and transnationalism -- South Asia , Middle Eastern literature (English) -- History and criticism , South Asian literature (English) -- History and criticism
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: vital:2328 , http://hdl.handle.net/10962/d1017770
- Description: This thesis is concerned with transnational literature and writers of the Middle Eastern and South Asian diasporas. It argues that the diasporic position of the authors enables their roles as comprador subjects. The thesis maintains that the figure of the comprador is always acted upon by its ontological predisposition, so that diasporic positionality often involves a single subject which straddles and speaks from two or more different subject positions. Comprador authors can be said to be co-opted by Western metropolitan publishing companies who stand to benefit by marketing the apparent marginality of the homelands about which these authors write. The thesis therefore proceeds from the notion that such a diasporic position is the paradoxical condition of the transnational subject or writer. I submit that there is, to some degree, a questionable element in the common political and cultural suggestions that emerge upon closer evaluation of diasporic literature. Indeed, a charge of complicity has been levelled against authors who write, apparently, to service two distinct entities – the wish to speak on behalf of a minority collective, as well as the imperial ‘centre’ which is the intended interlocutor of the comprador author. However, it is this difference, the implied otherness or marginality of the outsider within, which I argue is sometimes used by diasporic writers as a way of articulating with ‘authenticity’ the cultures and politics of their erstwhile localities. This thesis is concerned, therefore, with the representation of ‘the East’ in four novels by diasporic, specifically comprador writers, namely Salman Rushdie’s Midnight’s Children, Hanif Kureishi’s The Buddha of Suburbia, and Khaled Hosseini’s The Kite Runner and A Thousand Splendid Suns. I suggest that the ‘third-world’ and transnational literature can also be a selling point for the transnational subject, whose representations may at times pander to preconceived ideas about ‘the Orient’ and its people. As an illustration of this double-bind, I offer a close reading of all the novels to suggest that on the one hand, the comprador author writes within the paradigm of the ‘writing back’ movement, as a counter-discourse to the Orientalist representations of the homeland. However, the corollary is that such an attempt to ‘write back’, in a sense, re-inscribes the very discourse it wishes to subvert, especially because the literature is aimed at a ‘Western’ audience. Moreover, the template of the comprador could be used to explain how a transnational post-9/11 text from an Afghan-American, for instance, may be put to the service of the imperial machine, and read, therefore, as a supporting document to the U.S. policy on Afghanistan.
- Full Text:
- Date Issued: 2015
- Authors: Shabangu, Mohammad
- Date: 2015
- Subjects: Rushdie, Salman. Midnight's children -- Criticism and interpretation , Kureishi, Hanif. Buddha of suburbia -- Criticism and interpretation , Hosseini, Khaled. Kite runner -- Criticism and interpretation , Hosseini, Khaled. Thousand splendid suns -- Criticism and interpretation , Compradors , Exoticism in literature , Literature and transnationalism -- Middle East , Literature and transnationalism -- South Asia , Middle Eastern literature (English) -- History and criticism , South Asian literature (English) -- History and criticism
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: vital:2328 , http://hdl.handle.net/10962/d1017770
- Description: This thesis is concerned with transnational literature and writers of the Middle Eastern and South Asian diasporas. It argues that the diasporic position of the authors enables their roles as comprador subjects. The thesis maintains that the figure of the comprador is always acted upon by its ontological predisposition, so that diasporic positionality often involves a single subject which straddles and speaks from two or more different subject positions. Comprador authors can be said to be co-opted by Western metropolitan publishing companies who stand to benefit by marketing the apparent marginality of the homelands about which these authors write. The thesis therefore proceeds from the notion that such a diasporic position is the paradoxical condition of the transnational subject or writer. I submit that there is, to some degree, a questionable element in the common political and cultural suggestions that emerge upon closer evaluation of diasporic literature. Indeed, a charge of complicity has been levelled against authors who write, apparently, to service two distinct entities – the wish to speak on behalf of a minority collective, as well as the imperial ‘centre’ which is the intended interlocutor of the comprador author. However, it is this difference, the implied otherness or marginality of the outsider within, which I argue is sometimes used by diasporic writers as a way of articulating with ‘authenticity’ the cultures and politics of their erstwhile localities. This thesis is concerned, therefore, with the representation of ‘the East’ in four novels by diasporic, specifically comprador writers, namely Salman Rushdie’s Midnight’s Children, Hanif Kureishi’s The Buddha of Suburbia, and Khaled Hosseini’s The Kite Runner and A Thousand Splendid Suns. I suggest that the ‘third-world’ and transnational literature can also be a selling point for the transnational subject, whose representations may at times pander to preconceived ideas about ‘the Orient’ and its people. As an illustration of this double-bind, I offer a close reading of all the novels to suggest that on the one hand, the comprador author writes within the paradigm of the ‘writing back’ movement, as a counter-discourse to the Orientalist representations of the homeland. However, the corollary is that such an attempt to ‘write back’, in a sense, re-inscribes the very discourse it wishes to subvert, especially because the literature is aimed at a ‘Western’ audience. Moreover, the template of the comprador could be used to explain how a transnational post-9/11 text from an Afghan-American, for instance, may be put to the service of the imperial machine, and read, therefore, as a supporting document to the U.S. policy on Afghanistan.
- Full Text:
- Date Issued: 2015
An evaluation of change communication in ensuring the sustainability of change at Barclays Africa's first "green" building
- Authors: Magubane, Nokuzola
- Date: 2015
- Subjects: Barclays Bank , Sustainable buildings -- South Africa -- Johannesburg , Organizational change -- South Africa -- Johannesburg , Communication in organizations
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:849 , http://hdl.handle.net/10962/d1017517
- Description: The purpose of the study was to conduct an evaluation on the effectiveness of the change communications distributed to the occupants of Barclays Towers West, Barclays Africa‟s first green building, in ensuring the sustainability of the change after the move into the building. In addition, recommendations are made to improve the change communications directed towards the building occupants to ensure the sustainability of the change and for future moves to green buildings. The research paper is made up of the following three distinct sections: Section One – Evaluation Research Report: this section outlines the organisational and research context for the study, the objectives of the research and rationale for conducting the research. A brief overview of the key theories and models on change communication that were utilised in the study are discussed, and definitions of important terms are presented. The research methodology is also described which includes an explanation on the evaluation research approach utilised as well as the use of both qualitative and quantitative data in the study. In addition, the results from the research conducted are presented, based on three data collection methods utilised: document analysis, semi-structured interviews and a survey. The results are then analysed and discussed in relation to the literature reviewed on change communication. Recommendations are made on improvements that can be made to the change communications to ensure the sustainability of the change. Section Two – Literature Review: the literature, theories and important concept definitions of organisational change management, change sustainability, change communication and green buildings which are relevant for the research topic and have been used as the theoretical base of the study are explored in this section. A key component of the literature review is the description of the change communication theories and models: communication theory, Armenakis, Harris and Field (2007) Model, and the Barrett (2002) Model. An understanding of the theories and models is imperative, as the effectiveness of the change communications after the move into Barclays Towers West is assessed based on the elements of the change communication theories and models. Section Three – Research Methodology: the research methodology for the study is described in this section. Specifically, the research aims and objectives, the research paradigm, the population and sampling, data collection, data analysis and ethical considerations are outlined. A key component of the section is the explanation on how the data was collected and analysed in the study and the sequence. The post move communications and artefacts and meeting presentations were collected first. The qualitative data was analysed and used to determine the questions for the semi structured interviews. Semi-structured one on one interviews were then conducted. The qualitative data and the change communication theories and models used in this study were used to determine the questions for the online survey. An online survey tool was used to administer a predominantly five point Likert scale questionnaire with an invitation to participate emailed to the building occupants. The quantitative data was analysed using descriptive statistical analysis. Research Findings: The key research findings revealed that the messages communicated to the occupants after the move into the building have been mainly focused on operational matters and rarely on educating occupants on the green aspects of the building. A large majority of the survey respondents were aware of the building facilities, details and required behaviour. However it was found that the occupants, Line Managers and Senior Management are not displaying the required behaviour for a green building and do not know how to use some of the building facilities. A major gap was found in communicating with people moving into the building. In addition it was found that some of the information communicated to occupants is outdated. Written communications are used extensively and face to face communication is rarely used to communicate with the occupants. As a result, a number of changes are required to improve the effectiveness of the change communications to the occupants of Barclays Towers West. The improvements include communicating to new occupants; utilising additional communication channels; focusing communication messages on educating occupants on the strategic objectives for the building; rationale for building features and facilities; how to use the facilities and the impact of their behaviour on the building objectives being achieved.
- Full Text:
- Date Issued: 2015
- Authors: Magubane, Nokuzola
- Date: 2015
- Subjects: Barclays Bank , Sustainable buildings -- South Africa -- Johannesburg , Organizational change -- South Africa -- Johannesburg , Communication in organizations
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:849 , http://hdl.handle.net/10962/d1017517
- Description: The purpose of the study was to conduct an evaluation on the effectiveness of the change communications distributed to the occupants of Barclays Towers West, Barclays Africa‟s first green building, in ensuring the sustainability of the change after the move into the building. In addition, recommendations are made to improve the change communications directed towards the building occupants to ensure the sustainability of the change and for future moves to green buildings. The research paper is made up of the following three distinct sections: Section One – Evaluation Research Report: this section outlines the organisational and research context for the study, the objectives of the research and rationale for conducting the research. A brief overview of the key theories and models on change communication that were utilised in the study are discussed, and definitions of important terms are presented. The research methodology is also described which includes an explanation on the evaluation research approach utilised as well as the use of both qualitative and quantitative data in the study. In addition, the results from the research conducted are presented, based on three data collection methods utilised: document analysis, semi-structured interviews and a survey. The results are then analysed and discussed in relation to the literature reviewed on change communication. Recommendations are made on improvements that can be made to the change communications to ensure the sustainability of the change. Section Two – Literature Review: the literature, theories and important concept definitions of organisational change management, change sustainability, change communication and green buildings which are relevant for the research topic and have been used as the theoretical base of the study are explored in this section. A key component of the literature review is the description of the change communication theories and models: communication theory, Armenakis, Harris and Field (2007) Model, and the Barrett (2002) Model. An understanding of the theories and models is imperative, as the effectiveness of the change communications after the move into Barclays Towers West is assessed based on the elements of the change communication theories and models. Section Three – Research Methodology: the research methodology for the study is described in this section. Specifically, the research aims and objectives, the research paradigm, the population and sampling, data collection, data analysis and ethical considerations are outlined. A key component of the section is the explanation on how the data was collected and analysed in the study and the sequence. The post move communications and artefacts and meeting presentations were collected first. The qualitative data was analysed and used to determine the questions for the semi structured interviews. Semi-structured one on one interviews were then conducted. The qualitative data and the change communication theories and models used in this study were used to determine the questions for the online survey. An online survey tool was used to administer a predominantly five point Likert scale questionnaire with an invitation to participate emailed to the building occupants. The quantitative data was analysed using descriptive statistical analysis. Research Findings: The key research findings revealed that the messages communicated to the occupants after the move into the building have been mainly focused on operational matters and rarely on educating occupants on the green aspects of the building. A large majority of the survey respondents were aware of the building facilities, details and required behaviour. However it was found that the occupants, Line Managers and Senior Management are not displaying the required behaviour for a green building and do not know how to use some of the building facilities. A major gap was found in communicating with people moving into the building. In addition it was found that some of the information communicated to occupants is outdated. Written communications are used extensively and face to face communication is rarely used to communicate with the occupants. As a result, a number of changes are required to improve the effectiveness of the change communications to the occupants of Barclays Towers West. The improvements include communicating to new occupants; utilising additional communication channels; focusing communication messages on educating occupants on the strategic objectives for the building; rationale for building features and facilities; how to use the facilities and the impact of their behaviour on the building objectives being achieved.
- Full Text:
- Date Issued: 2015
An investigation into the types of classroom tasks senior secondary school (grade 11 and 12) mathematics teachers give to their learners : a case study
- Authors: Shapange, Ismael
- Date: 2015
- Subjects: Mathematics -- Study and teaching (Secondary) -- Namibia -- Omusati , Task analysis in education -- Namibia -- Omusati , Student-centered learning -- Namibia -- Omusati , High school teaching -- Namibia -- Omusati
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:2045 , http://hdl.handle.net/10962/d1017356
- Description: This interpretive case study was undertaken to investigate the nature of classroom tasks that teachers give to their learners and to gain insights into how they choose these tasks. It was carried out at two secondary schools in the Okahao circuit of the Omusati region in Namibia. The schools range from Grade 8 to Grade 12. This study focused mainly on teachers who teach Mathematics at senior secondary phase (Grade 11 and 12). The research participants were of four mathematics teachers – two from each school. The study was designed around two phases. Phase one consisted of video-recording of lessons, and phase two consisted of interviewing the teachers. The main purpose of the study was to ascertain the types and nature of tasks that teachers give to their learners and to gain insights into how they chose these tasks. The research adopted a combination of both qualitative and quantitative approaches. The study revealed that the participating teachers provided a near equal amount of lower level cognitive tasks and higher level cognitive tasks. It further revealed several factors that influence teachers when selecting the types of tasks they give to their learners. These factors include curriculum requirements, types of learners and their experiences, and learners’ contexts.
- Full Text:
- Date Issued: 2015
- Authors: Shapange, Ismael
- Date: 2015
- Subjects: Mathematics -- Study and teaching (Secondary) -- Namibia -- Omusati , Task analysis in education -- Namibia -- Omusati , Student-centered learning -- Namibia -- Omusati , High school teaching -- Namibia -- Omusati
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:2045 , http://hdl.handle.net/10962/d1017356
- Description: This interpretive case study was undertaken to investigate the nature of classroom tasks that teachers give to their learners and to gain insights into how they choose these tasks. It was carried out at two secondary schools in the Okahao circuit of the Omusati region in Namibia. The schools range from Grade 8 to Grade 12. This study focused mainly on teachers who teach Mathematics at senior secondary phase (Grade 11 and 12). The research participants were of four mathematics teachers – two from each school. The study was designed around two phases. Phase one consisted of video-recording of lessons, and phase two consisted of interviewing the teachers. The main purpose of the study was to ascertain the types and nature of tasks that teachers give to their learners and to gain insights into how they chose these tasks. The research adopted a combination of both qualitative and quantitative approaches. The study revealed that the participating teachers provided a near equal amount of lower level cognitive tasks and higher level cognitive tasks. It further revealed several factors that influence teachers when selecting the types of tasks they give to their learners. These factors include curriculum requirements, types of learners and their experiences, and learners’ contexts.
- Full Text:
- Date Issued: 2015
The effects of dietary soya and crystalline phytoestrogens on the growth, gonad development and histology of farmed abalone, Haliotis midae
- Wu, Yu
- Authors: Wu, Yu
- Date: 2015
- Subjects: Haliotis midae , Haliotis midae -- Feeding and feeds , Haliotis midae -- Growth , Haliotis midae -- Histology , Haliotis midae -- Effect of chemicals on , Soybean as feed , Phytoestrogens
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5380 , http://hdl.handle.net/10962/d1017225
- Description: The inclusion of soya as a dietary protein source in the formulated feed, Abfeed® S34 (Marifeed Pty (Ltd), Hermanus) for farmed abalone, Haliotis midae has resulted in larger gonads during reproductive seasons compared to the gonads of abalone fed kelp or diets that included fishmeal as the only main protein source. The aim of this study was to determine if the isoflavones present in the soya were responsible for this increase in gonad size and the subsequent effects on farmed abalone growth. Animals weighing between 40-50 g were fed one of seven isonitrogenous and isoenergetic diets containing either 0, 25, 50 or 100 percent of the soya component of the commercial feed (Abfeed® S34, Marifeed Pty (Ltd), Hermanus) from September 2013 to March 2014. An additional three diets were formulated to include crystalline isoflavone (ISO). These diets were identical to the 0 percent soya diet (i.e. the fishmeal only diet - FM), only ISO was included at the same rate that ISO occurred in the three soya diets. Data were analysed using a multiple forward stepwise regression analysis (MSR) to test the effects of ISO concentration, soya concentration, time, sex, time by concentration interaction and sex by concentration interaction on growth and gonad development and to identify those variables that most contributed to the model. The inclusion of crystalline ISO failed to promote larger gonads and had no effect on abalone growth, while growth and gonad development was dose dependent on soya inclusion rates with sex and time contributing to the models. Mean monthly weight gain in males correlated with increasing soya concentrations (c) (MSR, y = 3.24 + 0.002c, r2 = 0.23, p = 0.03), ranging from 3.11 ± 0.55 g abalone-1 month-1 to 4.43 ± 0.46 g abalone-1 month-1, while both male and female monthly length gain was not influenced by soya concentration with an overall mean of 1.62 ± 0.05 mm abalone-1 month-1 (MSR, p = 0.05 and p = 0.81, respectively). By December, the whole body mass, meat mass and visceral mass in both males and females decreased with increasing soya levels. However, by February, female whole body mass, meat mass and visceral mass positively correlated with soya levels. At the end of the study, male abalone fed FM with soya equivalent to the commercial feed had the highest whole body mass (69.00 ± 2.48 g abalone-1), meat mass (41.80 ± 1.12 g abalone-1), visceral mass (9.00 ± 2.47 g abalone-1) and gonad bulk index (42.70 ± 9.82 g abalone-1), while females were not influenced by soya concentrations with an overall whole body mass of 63.46 ± 0.79 g abalone-1. Weight loss was observed in all treatments between February and March, probably due to a spawning event. The moisture content in the meat was not influenced by treatment, however, visceral water loss was effected by both ISO and soya concentration with time and sex contributing to the model. The visceral water loss of females fed graded levels of soya decreased as a function of soya from December to March, and from December to February for males, whereas females fed ISO-enriched diets decreased as a function of ISO concentration (c) at the end of the study from 74.98 ± 0.88 to 73.10 ± 0.75 percent (MSR, y = 74.97 – 0.0025c, r2 = 0.20, p = 0.048). The inclusion of crystalline ISO had no significant effect on oogenesis in female farmed Haliotis midae, while the distribution of the predominant oocyte stage, stage 7 (second last stage prior to spawning) was dose-dependent in abalone fed increasing soya concentration (c) (MSR, y = 33.38 + 0.03c, r2 = 0.32, F(1, 18) = 8.52, p = 0.01). The increase in stage 7 oocytes in abalone fed FM with soya did not reduce the number of oocytes (44.96 ± 3.01 oocytes mm-2) present within the lumen, while the number of oocytes (o) in abalone fed the FM-only based diets decreased with increasing abundance of stage 7 oocytes (MSR, y = 58.28 – 0.48c, r2 = 0.38, F(1, 18) = 12.51, p = 0.002), possibly due to the increase in size of the oocytes with thicker jelly coats. This study provided evidence that crystalline isoflavone had no influence on abalone gonad development over five months, while soya had a dose-dependent effect on growth, gonad mass and oogenesis in farmed Haliotis midae. Formulated abalone feed could be manipulated at certain times of the year to obtain maximum growth. These implications and further studies were discussed.
- Full Text:
- Date Issued: 2015
- Authors: Wu, Yu
- Date: 2015
- Subjects: Haliotis midae , Haliotis midae -- Feeding and feeds , Haliotis midae -- Growth , Haliotis midae -- Histology , Haliotis midae -- Effect of chemicals on , Soybean as feed , Phytoestrogens
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5380 , http://hdl.handle.net/10962/d1017225
- Description: The inclusion of soya as a dietary protein source in the formulated feed, Abfeed® S34 (Marifeed Pty (Ltd), Hermanus) for farmed abalone, Haliotis midae has resulted in larger gonads during reproductive seasons compared to the gonads of abalone fed kelp or diets that included fishmeal as the only main protein source. The aim of this study was to determine if the isoflavones present in the soya were responsible for this increase in gonad size and the subsequent effects on farmed abalone growth. Animals weighing between 40-50 g were fed one of seven isonitrogenous and isoenergetic diets containing either 0, 25, 50 or 100 percent of the soya component of the commercial feed (Abfeed® S34, Marifeed Pty (Ltd), Hermanus) from September 2013 to March 2014. An additional three diets were formulated to include crystalline isoflavone (ISO). These diets were identical to the 0 percent soya diet (i.e. the fishmeal only diet - FM), only ISO was included at the same rate that ISO occurred in the three soya diets. Data were analysed using a multiple forward stepwise regression analysis (MSR) to test the effects of ISO concentration, soya concentration, time, sex, time by concentration interaction and sex by concentration interaction on growth and gonad development and to identify those variables that most contributed to the model. The inclusion of crystalline ISO failed to promote larger gonads and had no effect on abalone growth, while growth and gonad development was dose dependent on soya inclusion rates with sex and time contributing to the models. Mean monthly weight gain in males correlated with increasing soya concentrations (c) (MSR, y = 3.24 + 0.002c, r2 = 0.23, p = 0.03), ranging from 3.11 ± 0.55 g abalone-1 month-1 to 4.43 ± 0.46 g abalone-1 month-1, while both male and female monthly length gain was not influenced by soya concentration with an overall mean of 1.62 ± 0.05 mm abalone-1 month-1 (MSR, p = 0.05 and p = 0.81, respectively). By December, the whole body mass, meat mass and visceral mass in both males and females decreased with increasing soya levels. However, by February, female whole body mass, meat mass and visceral mass positively correlated with soya levels. At the end of the study, male abalone fed FM with soya equivalent to the commercial feed had the highest whole body mass (69.00 ± 2.48 g abalone-1), meat mass (41.80 ± 1.12 g abalone-1), visceral mass (9.00 ± 2.47 g abalone-1) and gonad bulk index (42.70 ± 9.82 g abalone-1), while females were not influenced by soya concentrations with an overall whole body mass of 63.46 ± 0.79 g abalone-1. Weight loss was observed in all treatments between February and March, probably due to a spawning event. The moisture content in the meat was not influenced by treatment, however, visceral water loss was effected by both ISO and soya concentration with time and sex contributing to the model. The visceral water loss of females fed graded levels of soya decreased as a function of soya from December to March, and from December to February for males, whereas females fed ISO-enriched diets decreased as a function of ISO concentration (c) at the end of the study from 74.98 ± 0.88 to 73.10 ± 0.75 percent (MSR, y = 74.97 – 0.0025c, r2 = 0.20, p = 0.048). The inclusion of crystalline ISO had no significant effect on oogenesis in female farmed Haliotis midae, while the distribution of the predominant oocyte stage, stage 7 (second last stage prior to spawning) was dose-dependent in abalone fed increasing soya concentration (c) (MSR, y = 33.38 + 0.03c, r2 = 0.32, F(1, 18) = 8.52, p = 0.01). The increase in stage 7 oocytes in abalone fed FM with soya did not reduce the number of oocytes (44.96 ± 3.01 oocytes mm-2) present within the lumen, while the number of oocytes (o) in abalone fed the FM-only based diets decreased with increasing abundance of stage 7 oocytes (MSR, y = 58.28 – 0.48c, r2 = 0.38, F(1, 18) = 12.51, p = 0.002), possibly due to the increase in size of the oocytes with thicker jelly coats. This study provided evidence that crystalline isoflavone had no influence on abalone gonad development over five months, while soya had a dose-dependent effect on growth, gonad mass and oogenesis in farmed Haliotis midae. Formulated abalone feed could be manipulated at certain times of the year to obtain maximum growth. These implications and further studies were discussed.
- Full Text:
- Date Issued: 2015
Variation in breeding systems, floral morphology and nectar properties in three co-occurring Erica species with contrasting pollination syndromes
- Authors: Lombardi, Giorgio Colombo
- Date: 2015
- Subjects: Ericas -- South Africa -- Western Cape , Ericas -- Morphology , Ericas -- Reproduction , Ericas -- Pollination , Pollination by animals , Pollination by insects , Nectar
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4273 , http://hdl.handle.net/10962/d1018567
- Description: The genus Erica is the most species rich in the Cape Floristic Kingdom, yet there are limited data on the various flower-pollinator interactions and breeding systems for the majority of these species. Until recently research has focussed on predictive floral traits, including flower shape, length of corolla and corolla opening to identify likely pollinators in this genus. Field observations provide an empirical test of such predictions. This study investigated three species of Erica and compared their pollination and breeding systems and floral biology. Research, including field experiments and pollinator observations was undertaken in the Vogelgat Private Nature Reserve, Maanschynkop Nature Reserve and Boskloof farm in the vicinity of Hermanus in the Western Cape Province of South Africa. Field observations were conducted to determine what flower- visitor interactions occurred, while nectar volumes and sugar concentrations were measured to determine the value of the reward to the different visitors. Selective exclusion and breeding system experiments were carried out to determine whether these Erica species were capable of autonomous self-fertilization or whether they are pollinator dependent for breeding success. The unusual morphology of Erica lanuginosa suggested rodent-pollination. Field observations, including photographs of visits to plants in the field, the presence of pollen in scat sample and selective exclusion and breeding system experiments identified rodents, primarily Acomys subspinosus to be the primary pollinator. Long-proboscid flies of the family Nemestrinidae were found, on the basis of field observations to be responsible for pollination of the endemic Erica aristata. This was supported by with nectar volume and sugar concentration samples which are consistent with other long-proboscid fly-pollinated plant species. Selective exclusion and breeding system experiments undertaken confirmed that Erica aristata required a pollinator to set seed. Observations and breeding trials revealed bird-pollination in Erica sessiliflora. Nectar volume and sugar concentrations in Erica sessiliflora were in line with other sunbird-pollinated plant species, providing the necessary rewards for sunbirds visiting this species. Specialised pollination by single pollinators was found in all three species and results from breeding system experiments show that out-crossing is important. Further research into pollinator-flower interactions in the genus Erica is necessary, not least to understand more fully the conservation importance of specific pollinators.
- Full Text:
- Date Issued: 2015
- Authors: Lombardi, Giorgio Colombo
- Date: 2015
- Subjects: Ericas -- South Africa -- Western Cape , Ericas -- Morphology , Ericas -- Reproduction , Ericas -- Pollination , Pollination by animals , Pollination by insects , Nectar
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4273 , http://hdl.handle.net/10962/d1018567
- Description: The genus Erica is the most species rich in the Cape Floristic Kingdom, yet there are limited data on the various flower-pollinator interactions and breeding systems for the majority of these species. Until recently research has focussed on predictive floral traits, including flower shape, length of corolla and corolla opening to identify likely pollinators in this genus. Field observations provide an empirical test of such predictions. This study investigated three species of Erica and compared their pollination and breeding systems and floral biology. Research, including field experiments and pollinator observations was undertaken in the Vogelgat Private Nature Reserve, Maanschynkop Nature Reserve and Boskloof farm in the vicinity of Hermanus in the Western Cape Province of South Africa. Field observations were conducted to determine what flower- visitor interactions occurred, while nectar volumes and sugar concentrations were measured to determine the value of the reward to the different visitors. Selective exclusion and breeding system experiments were carried out to determine whether these Erica species were capable of autonomous self-fertilization or whether they are pollinator dependent for breeding success. The unusual morphology of Erica lanuginosa suggested rodent-pollination. Field observations, including photographs of visits to plants in the field, the presence of pollen in scat sample and selective exclusion and breeding system experiments identified rodents, primarily Acomys subspinosus to be the primary pollinator. Long-proboscid flies of the family Nemestrinidae were found, on the basis of field observations to be responsible for pollination of the endemic Erica aristata. This was supported by with nectar volume and sugar concentration samples which are consistent with other long-proboscid fly-pollinated plant species. Selective exclusion and breeding system experiments undertaken confirmed that Erica aristata required a pollinator to set seed. Observations and breeding trials revealed bird-pollination in Erica sessiliflora. Nectar volume and sugar concentrations in Erica sessiliflora were in line with other sunbird-pollinated plant species, providing the necessary rewards for sunbirds visiting this species. Specialised pollination by single pollinators was found in all three species and results from breeding system experiments show that out-crossing is important. Further research into pollinator-flower interactions in the genus Erica is necessary, not least to understand more fully the conservation importance of specific pollinators.
- Full Text:
- Date Issued: 2015
Diet of coastal filter feeders : impact of factors operating at different scales
- Authors: Puccinelli, Eleonora
- Date: 2015
- Subjects: Benthic animals -- Ecology -- South Africa , Benthic animals -- Nutrition
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5929 , http://hdl.handle.net/10962/d1017807
- Description: Benthic filter feeders have a key functional role in the dynamics of coastal food web as an intermediate trophic level and bioengineers. A wide variety of factors, operating across multiple spatial scales (e.g. hydrographic regime, human activities), can affect the composition of the water column and thus the availability of food for benthic populations. Food availability in turn affects the growth, reproductive rates and survival of benthic organisms, and consequently, can influence the functioning of the entire ecosystem. This study aims to evaluate how various environmental factors may modify the diet of intertidal filter feeders living along the South African coast. Specifically, the effects of biogeography, upwelling, urbanization and freshwater input on the dietary regimes of five species of filter feeders (two mussel and three barnacle species) were investigated using fatty acid (FA) and stable isotope (SI) analyses.Strong interspecific differences were found among the five species considered. However, all species responded to factors operating at large (100s km) and meso (10s- 100s km) scales (i.e. biogeography and upwelling respectively). The barnacles exhibit habitat segregation and showed different FA and SI signatures from each other, while the two mussel species, an invasive and native species that co-occur in the same mussel beds, had partially overlapping diets. Differences in their diets were found only using FA analysis, while their SI signatures differed on only one occasion. This highlights the importance of using the appropriate tool, and ideally combined techniques, to investigate diets.FA and SI signatures of all species considered changed among the three biographical provinces (west, south and east coasts of South Africa) exhibiting similar patterns that reflect the two oceanographic regimes that characterize the coastline: the eutrophic Benguela Current on the west coast and the oligotrophic Agulhas Current on the other two coasts. Upwelling had a significant effect on FA and SI signatures, with stronger effects on the west coast than the south coast. The results indicate that benthic filter feeders at upwelling areas consumed a mix of coastal macroalgal detritus and phytoplankton, which was probably brought onshore during downwelling events. At smaller spatialscales and using repeated sampling, the influence of upwelling on the west coast was found to be pervasive, rather than discrete, so that it may be more appropriate to categorize upwelling by referring to upwelling centres and downstream areas. SI underlined a significant effect of urbanization on the diet of filter feeders with an enrichment in the δ¹⁵N being characteristic of anthropogenic effect. Although a large number of rivers characterize the South African coast, no distinct effect of freshwater input was found for either the SI or FA signatures of the filter feeders. This contrasts with earlier work on demersal species and suggests that freshwater input does not significantly affect food availability for intertidal filter feeders, and that other factors (e.g. hydrogeography) are more important in determining the diet of these populations. These results highlight that environmental and anthropogenic factors operating at different spatial and temporal scales have a profound effect on benthic ecosystems, and that they control the relationship between primary production and primary consumers in coastal areas. Above all, this work highlights the importance of understanding the spatial and temporal scales at which different factors affect feeding regimes, and their critical role in coastal food webs.
- Full Text:
- Date Issued: 2015
- Authors: Puccinelli, Eleonora
- Date: 2015
- Subjects: Benthic animals -- Ecology -- South Africa , Benthic animals -- Nutrition
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5929 , http://hdl.handle.net/10962/d1017807
- Description: Benthic filter feeders have a key functional role in the dynamics of coastal food web as an intermediate trophic level and bioengineers. A wide variety of factors, operating across multiple spatial scales (e.g. hydrographic regime, human activities), can affect the composition of the water column and thus the availability of food for benthic populations. Food availability in turn affects the growth, reproductive rates and survival of benthic organisms, and consequently, can influence the functioning of the entire ecosystem. This study aims to evaluate how various environmental factors may modify the diet of intertidal filter feeders living along the South African coast. Specifically, the effects of biogeography, upwelling, urbanization and freshwater input on the dietary regimes of five species of filter feeders (two mussel and three barnacle species) were investigated using fatty acid (FA) and stable isotope (SI) analyses.Strong interspecific differences were found among the five species considered. However, all species responded to factors operating at large (100s km) and meso (10s- 100s km) scales (i.e. biogeography and upwelling respectively). The barnacles exhibit habitat segregation and showed different FA and SI signatures from each other, while the two mussel species, an invasive and native species that co-occur in the same mussel beds, had partially overlapping diets. Differences in their diets were found only using FA analysis, while their SI signatures differed on only one occasion. This highlights the importance of using the appropriate tool, and ideally combined techniques, to investigate diets.FA and SI signatures of all species considered changed among the three biographical provinces (west, south and east coasts of South Africa) exhibiting similar patterns that reflect the two oceanographic regimes that characterize the coastline: the eutrophic Benguela Current on the west coast and the oligotrophic Agulhas Current on the other two coasts. Upwelling had a significant effect on FA and SI signatures, with stronger effects on the west coast than the south coast. The results indicate that benthic filter feeders at upwelling areas consumed a mix of coastal macroalgal detritus and phytoplankton, which was probably brought onshore during downwelling events. At smaller spatialscales and using repeated sampling, the influence of upwelling on the west coast was found to be pervasive, rather than discrete, so that it may be more appropriate to categorize upwelling by referring to upwelling centres and downstream areas. SI underlined a significant effect of urbanization on the diet of filter feeders with an enrichment in the δ¹⁵N being characteristic of anthropogenic effect. Although a large number of rivers characterize the South African coast, no distinct effect of freshwater input was found for either the SI or FA signatures of the filter feeders. This contrasts with earlier work on demersal species and suggests that freshwater input does not significantly affect food availability for intertidal filter feeders, and that other factors (e.g. hydrogeography) are more important in determining the diet of these populations. These results highlight that environmental and anthropogenic factors operating at different spatial and temporal scales have a profound effect on benthic ecosystems, and that they control the relationship between primary production and primary consumers in coastal areas. Above all, this work highlights the importance of understanding the spatial and temporal scales at which different factors affect feeding regimes, and their critical role in coastal food webs.
- Full Text:
- Date Issued: 2015