Examining the influence of extrinsic factors on herbivore assemblage composition in a southern African savanna
- Young, Cyanne, Smithwick, Erica
- Authors: Young, Cyanne , Smithwick, Erica
- Date: 2019
- Subjects: Herbivores -- Ecology , Ungulates -- Ecology Mammal populations -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/44334 , vital:37154
- Description: Globally, herbivore populations have become threatened by the effects of a growing human population. This has resulted in over-hunting, habitat encroachment, fragmentation and degradation and competition leading to the replacement of wild herbivore populations with livestock. African herbivores, in particular, have experienced a severe decline in abundance and distribution, and vast conservation management efforts are underway to preserve herbivore populations and promote their growth. However, conservation management efforts sometimes have unintended consequences on the abundance and distribution of herbivores as a result of the complex interactions they have with their ecosystem. The aim of this study was to: 1) examine the drivers of herbivore distribution at the Satara section of Kruger National Park (hereafter ‘KNP’) at a landscape scale, to determine assemblage composition under the constraints of different environmental attributes; and 2) examine feeding selection by grazing herbivores of different morpho-physiological characteristics at a patch scale of differing environmental attributes. To achieve this, thirty-six experimental plots were established at three distances from water at Satara, and manipulated by mowing, mowing and fertilising or fertilising only over the course of a year, to account for seasonal effects. Each plot was fitted with a camera trap which ran for five weeks in each sampling season, and the data collected focussed on eleven herbivore species of differing body size, digestive strategy and feeding preference. These species were selected due to their abundance at Satara, and their representation of a variety of morpho-physiological characteristics. To achieve both aims, generalised linear models were used to determine the probability of occurrence of a functional type (for aim 1- Chapter 3), and individual species (for aim 2- Chapter 4). To construct the generalised linear models for Chapter 3, hypotheses about species’ relative distribution and abundance were developed through a literature review of forage and water availability constraints on feeding preference and body size of herbivore biomass at a landscape scale. I expected strong seasonal relationships between vegetation biomass and quality, and biomass of water-dependent herbivores with increasing distance to water. My analyses of herbivore distribution across the region confirmed broad-scale descriptions of interactions between forage requirements and water availability, across a set of species which differ in functional traits, at a landscape scale. In Chapter 4, trends in probability of occurrence by seven grazing herbivore species were determined using camera trap data at a patch scale. My results showed that season was a major determinant of species distribution, especially those which are not obligate grazers or feed exclusively in the 0.5 km to 2 km zone from water. I found that most selective feeding occurred in the late wet season when water would be more evenly distributed across the landscape and forage resources close to water would have had the chance to recover from depletion as a result of dry season use. The collective efforts of this study show that distance from water was a critical determinant of herbivore distribution across the landscape, and that forage utilisation by small mixed-feeders and large grazers in particular, altered significantly across seasons. This has important implications for the provision of artificial water, given that foraging pressure is increased closer to water. Landscape heterogeneity needs to be maintained through efficient water provision, to allow areas of forage reserve to maintained in the dry season, where species are constrained by water availability and forage quality and quantity.
- Full Text:
- Date Issued: 2019
- Authors: Young, Cyanne , Smithwick, Erica
- Date: 2019
- Subjects: Herbivores -- Ecology , Ungulates -- Ecology Mammal populations -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/44334 , vital:37154
- Description: Globally, herbivore populations have become threatened by the effects of a growing human population. This has resulted in over-hunting, habitat encroachment, fragmentation and degradation and competition leading to the replacement of wild herbivore populations with livestock. African herbivores, in particular, have experienced a severe decline in abundance and distribution, and vast conservation management efforts are underway to preserve herbivore populations and promote their growth. However, conservation management efforts sometimes have unintended consequences on the abundance and distribution of herbivores as a result of the complex interactions they have with their ecosystem. The aim of this study was to: 1) examine the drivers of herbivore distribution at the Satara section of Kruger National Park (hereafter ‘KNP’) at a landscape scale, to determine assemblage composition under the constraints of different environmental attributes; and 2) examine feeding selection by grazing herbivores of different morpho-physiological characteristics at a patch scale of differing environmental attributes. To achieve this, thirty-six experimental plots were established at three distances from water at Satara, and manipulated by mowing, mowing and fertilising or fertilising only over the course of a year, to account for seasonal effects. Each plot was fitted with a camera trap which ran for five weeks in each sampling season, and the data collected focussed on eleven herbivore species of differing body size, digestive strategy and feeding preference. These species were selected due to their abundance at Satara, and their representation of a variety of morpho-physiological characteristics. To achieve both aims, generalised linear models were used to determine the probability of occurrence of a functional type (for aim 1- Chapter 3), and individual species (for aim 2- Chapter 4). To construct the generalised linear models for Chapter 3, hypotheses about species’ relative distribution and abundance were developed through a literature review of forage and water availability constraints on feeding preference and body size of herbivore biomass at a landscape scale. I expected strong seasonal relationships between vegetation biomass and quality, and biomass of water-dependent herbivores with increasing distance to water. My analyses of herbivore distribution across the region confirmed broad-scale descriptions of interactions between forage requirements and water availability, across a set of species which differ in functional traits, at a landscape scale. In Chapter 4, trends in probability of occurrence by seven grazing herbivore species were determined using camera trap data at a patch scale. My results showed that season was a major determinant of species distribution, especially those which are not obligate grazers or feed exclusively in the 0.5 km to 2 km zone from water. I found that most selective feeding occurred in the late wet season when water would be more evenly distributed across the landscape and forage resources close to water would have had the chance to recover from depletion as a result of dry season use. The collective efforts of this study show that distance from water was a critical determinant of herbivore distribution across the landscape, and that forage utilisation by small mixed-feeders and large grazers in particular, altered significantly across seasons. This has important implications for the provision of artificial water, given that foraging pressure is increased closer to water. Landscape heterogeneity needs to be maintained through efficient water provision, to allow areas of forage reserve to maintained in the dry season, where species are constrained by water availability and forage quality and quantity.
- Full Text:
- Date Issued: 2019
The influence of selected variables on motor vehicle-related purchasing behaviour
- Authors: Nkoyi, Anele
- Date: 2014
- Subjects: Motor vehicles -- Purchasing , Consumer behavior , Marketing -- Decision making
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: http://hdl.handle.net/10948/9119 , vital:26466
- Description: Marketers are faced with informed and highly complex consumers. The consumer market is becoming more competitive and more difficult to predict as consumers make purchase decisions in their everyday life. An ongoing need exists for information and an examination of purchasing behaviour for marketers to succeed in their pursuit of business endeavours. This study examines the influence of selected variables on motor vehicle-related purchasing behaviour. Five independent variables, namely branding, price, promotion, safety features and colour were investigated and the dependent variable (purchasing behaviour) was examined. In doing so, various stages which consumers undergo when making purchasing decisions were discussed. These stages were outlined as need recognition, information search, and evaluation of alternatives, purchase and post-purchase behaviour. The primary research objective of this study was to determine the influence of selected variables on motor vehicle-related purchasing behaviour. In order to achieve the objectives of the study, an empirical investigation was undertaken. The quantitative (positivistic) paradigm was used in this study, as the aim was to test the hypotheses and conceptualmodel of the study using statistical analysis. In gathering primary data, 192 self-administered questionnaires were issued to respondents for completion by means of convenience and quota non-probability sampling. Upon completion of all the questionnaires, data was analysed in order to arrive at the conclusions regarding the research questions. The empirical findings and analysis followed a systematic and statistical process, where exploratory factor analysis using target rotation was used to test the validity of the measuring instrument. Cronbach alpha correlation coefficients were used to confirm the reliability of the measuring instrument, while multiple regression analysis was carried out to test the hypothesised relationships between the independent variables and the dependent variable of the study. ANOVA was applied to determine differences in the demographic characteristics of respondents. The main findings on the validity and reliability of the measuring instrument proved to be statistically satisfactory. The main findings which emerged from the multiple regression analysis suggested that price and colour had statistically significant influence on motor vehicle-related purchasing behaviour. Findings revealed that branding, promotion and safety conditions had no significant effects on motor vehicle related purchasing behaviour. Accordingly, the hypotheses for price and colour were accepted and those for branding, promotion and safety conditions were rejected. Therefore according to respondents, price and colour of a motor vehicle are the most important considerations when undertaking purchasing decisions regarding motor vehicles. Additionally, the empirical investigation revealed that significant differences exist between age groups of respondents, meaning that different age groups of respondents had different perceptions and opinions with regard to their purchasing patterns relating to price. Furthermore, significant differences were also found between male and female respondents in terms of price and colour, meaning that the two genders had different perceptions and opinions with regard to their purchasing patterns in these areas. The empirical findings of this study are relevant for motor vehicle retailers and original equipment manufacturers, as the findings provide important information regarding the influence of selected variables on motor vehicle-related purchasing behaviour. Secondly the findings of this study contribute to the body of knowledge regarding purchasing behaviour.
- Full Text: false
- Date Issued: 2014
- Authors: Nkoyi, Anele
- Date: 2014
- Subjects: Motor vehicles -- Purchasing , Consumer behavior , Marketing -- Decision making
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: http://hdl.handle.net/10948/9119 , vital:26466
- Description: Marketers are faced with informed and highly complex consumers. The consumer market is becoming more competitive and more difficult to predict as consumers make purchase decisions in their everyday life. An ongoing need exists for information and an examination of purchasing behaviour for marketers to succeed in their pursuit of business endeavours. This study examines the influence of selected variables on motor vehicle-related purchasing behaviour. Five independent variables, namely branding, price, promotion, safety features and colour were investigated and the dependent variable (purchasing behaviour) was examined. In doing so, various stages which consumers undergo when making purchasing decisions were discussed. These stages were outlined as need recognition, information search, and evaluation of alternatives, purchase and post-purchase behaviour. The primary research objective of this study was to determine the influence of selected variables on motor vehicle-related purchasing behaviour. In order to achieve the objectives of the study, an empirical investigation was undertaken. The quantitative (positivistic) paradigm was used in this study, as the aim was to test the hypotheses and conceptualmodel of the study using statistical analysis. In gathering primary data, 192 self-administered questionnaires were issued to respondents for completion by means of convenience and quota non-probability sampling. Upon completion of all the questionnaires, data was analysed in order to arrive at the conclusions regarding the research questions. The empirical findings and analysis followed a systematic and statistical process, where exploratory factor analysis using target rotation was used to test the validity of the measuring instrument. Cronbach alpha correlation coefficients were used to confirm the reliability of the measuring instrument, while multiple regression analysis was carried out to test the hypothesised relationships between the independent variables and the dependent variable of the study. ANOVA was applied to determine differences in the demographic characteristics of respondents. The main findings on the validity and reliability of the measuring instrument proved to be statistically satisfactory. The main findings which emerged from the multiple regression analysis suggested that price and colour had statistically significant influence on motor vehicle-related purchasing behaviour. Findings revealed that branding, promotion and safety conditions had no significant effects on motor vehicle related purchasing behaviour. Accordingly, the hypotheses for price and colour were accepted and those for branding, promotion and safety conditions were rejected. Therefore according to respondents, price and colour of a motor vehicle are the most important considerations when undertaking purchasing decisions regarding motor vehicles. Additionally, the empirical investigation revealed that significant differences exist between age groups of respondents, meaning that different age groups of respondents had different perceptions and opinions with regard to their purchasing patterns relating to price. Furthermore, significant differences were also found between male and female respondents in terms of price and colour, meaning that the two genders had different perceptions and opinions with regard to their purchasing patterns in these areas. The empirical findings of this study are relevant for motor vehicle retailers and original equipment manufacturers, as the findings provide important information regarding the influence of selected variables on motor vehicle-related purchasing behaviour. Secondly the findings of this study contribute to the body of knowledge regarding purchasing behaviour.
- Full Text: false
- Date Issued: 2014
Impact of an increase of the local content quota on radio broadcasters
- Authors: Maqina, Bandile Chumani
- Date: 2013
- Subjects: Radio broadcasting -- South Africa , Broadcasting -- South Africa , Radio and music
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:9414 , http://hdl.handle.net/10948/d1020594
- Description: With the ever growing disenfranchisement of musicians and artist in the in ability of government entities to enforce stricter and favourable music quota which aim to increase the consumption of local music by increasing the current music quota as it stands from 25 percent to at least 60 percent for commercial radio, with more and more musicians calling for an increase in the current quota. In an open letter to the then Minister of Arts and Culture, Mr Pallo Jordan from the South African Music Quota Committee (SAMQC) (Oct 2007) they voiced their concerns: “The SA content quota of 25 percent for commercial radio is not only too low, it is also often meaningless, because The Independent Communications Authority of South Africa (ICASA) allows stations to include gig guides, interviews and promotions as part of their local quota. You state, and we agree, that “cultural industries are serious business”. The structures protecting the national interest in iron, minerals, fishing, sport and many other areas are strongly enforced and defended here in South Africa. Why not our music?” More initiatives such as the “Play Local of Die” campaign whose aim is to urge commercial broadcasters to increase their local content with regards to commercial radios stations playlist was launched by South African Hip Hop artist commonly known as JR (Real Name: JR Bogopa) to further exhibit the South African musicians plight in how pivotal it is to their careers and overall financial well-being that the current quota be raised significantly. The aim of this study was to investigate the impact of local content quota on domestic radio broadcasters in South Africa. The population for this study included 100 radio station which broadcast in the republic of South Africa. The response rate for the e-mail questionnaire was 100 percent of the 100 respondents. A Likert-type scale instrument consisted of 39 questions divided into two sections: Section one looked at the demographic profile of the respondents and section two focused on getting responses on the factors impacting local content quotaand domestic broadcasters, namely local content quota, implications for domestic broadcasters, revenue streams, impact on local musicians, governments role in local content quota, success factors, globalisation and piracy. In order to realise the purpose of this study, the following research design was used: Step 1 A literature review was conducted to determine the various factors impacting local artists, local broadcasters and local content quota. Step 2 A questionnaire was composed according to the principles and guidelines in steps 1. Step 3 Empirical data was obtained with the aid of an e-mail survey. Step 4 The results of the data were analysed and interpreted. Step 5 The empirical results were integrated with Step 3. Step 6 Conclusions and recommendations were completed. The main findings from the study were: The study revealed that the radio industry is not unanimous in the call from artists for government to increase the local content quota and thus prefer that the current status quo continue. That local content quota are not the only way to curb the South African music industry‟s woes, artists should seek to maximise their revenue by exploiting the infinite avenues for revenue that globalisation avails.
- Full Text:
- Date Issued: 2013
- Authors: Maqina, Bandile Chumani
- Date: 2013
- Subjects: Radio broadcasting -- South Africa , Broadcasting -- South Africa , Radio and music
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:9414 , http://hdl.handle.net/10948/d1020594
- Description: With the ever growing disenfranchisement of musicians and artist in the in ability of government entities to enforce stricter and favourable music quota which aim to increase the consumption of local music by increasing the current music quota as it stands from 25 percent to at least 60 percent for commercial radio, with more and more musicians calling for an increase in the current quota. In an open letter to the then Minister of Arts and Culture, Mr Pallo Jordan from the South African Music Quota Committee (SAMQC) (Oct 2007) they voiced their concerns: “The SA content quota of 25 percent for commercial radio is not only too low, it is also often meaningless, because The Independent Communications Authority of South Africa (ICASA) allows stations to include gig guides, interviews and promotions as part of their local quota. You state, and we agree, that “cultural industries are serious business”. The structures protecting the national interest in iron, minerals, fishing, sport and many other areas are strongly enforced and defended here in South Africa. Why not our music?” More initiatives such as the “Play Local of Die” campaign whose aim is to urge commercial broadcasters to increase their local content with regards to commercial radios stations playlist was launched by South African Hip Hop artist commonly known as JR (Real Name: JR Bogopa) to further exhibit the South African musicians plight in how pivotal it is to their careers and overall financial well-being that the current quota be raised significantly. The aim of this study was to investigate the impact of local content quota on domestic radio broadcasters in South Africa. The population for this study included 100 radio station which broadcast in the republic of South Africa. The response rate for the e-mail questionnaire was 100 percent of the 100 respondents. A Likert-type scale instrument consisted of 39 questions divided into two sections: Section one looked at the demographic profile of the respondents and section two focused on getting responses on the factors impacting local content quotaand domestic broadcasters, namely local content quota, implications for domestic broadcasters, revenue streams, impact on local musicians, governments role in local content quota, success factors, globalisation and piracy. In order to realise the purpose of this study, the following research design was used: Step 1 A literature review was conducted to determine the various factors impacting local artists, local broadcasters and local content quota. Step 2 A questionnaire was composed according to the principles and guidelines in steps 1. Step 3 Empirical data was obtained with the aid of an e-mail survey. Step 4 The results of the data were analysed and interpreted. Step 5 The empirical results were integrated with Step 3. Step 6 Conclusions and recommendations were completed. The main findings from the study were: The study revealed that the radio industry is not unanimous in the call from artists for government to increase the local content quota and thus prefer that the current status quo continue. That local content quota are not the only way to curb the South African music industry‟s woes, artists should seek to maximise their revenue by exploiting the infinite avenues for revenue that globalisation avails.
- Full Text:
- Date Issued: 2013
Organisational factors impacting on employee retention
- Authors: Guma, Pendulwa Vuyokazi
- Date: 2011
- Subjects: Employee retention , Organizational change , Employee motivation
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8616 , http://hdl.handle.net/10948/1530 , Employee retention , Organizational change , Employee motivation
- Description: Organisations must have a constant influx of candidates for potential employment. New employee positions are required as market areas are expanded. Recruitment occurs even in the face of limited growth or decline in service capacity, because individuals with specialised skills or training who leave the organisation must be replaced, and because services or technologies that have been revised or modified must be staffed. The recruitment of personnel plays an important role in assisting the organisation to adapt and remain competitive. The Eastern Cape Department of Economic Development and Environmental Affairs (DEDEA) employs a wide variety of workers. Thus, the sources of applicants and types of methods used to expand the applicant pool vary depending on the occupational classification being considered. It, therefore, becomes self-defeating to invest significant resources in a recruitment effort if such effort is offset by high turnover rates. Retention of employees is as essential as their recruitment. The purpose of this study was to investigate the organisational factors impacting on employee retention at DEDEA. The population for the study included 781 DEDEA employees. The response rate for the emailed questionnaire was 54 percent or 425 respondents. The Likert-type scale instrument consisted of forty questions divided into two sections: Section one looked at the demographic profile of the respondents and section two focused on getting responses on the five organisational impacting on v employee retention, namely: career development; compensation; positive recognition; staff engagement and management. In order to achieve the purpose of this study, the following research design was adopted: Step 1 A literature review was conducted to determine the various organizational factors impacting on employee retention. Step 2 From the literature review, a process model was adopted to assist the researcher in structuring the research questionnaire. Step 3 A questionnaire was constructed according to the principles and guidelines in steps 2 and step 3. Step 4 Empirical data was obtained by means of an email survey. Step 5 The results of the survey were analysed and interpreted. Step 6 The empirical results were integrated with Step 3. Step 7 Conclusions and recommendations were done. The main findings from the study were: - The study revealed a significant relationship between the selected organisational factors and employee retention. - The study also produced a model suitable for use by DEDEA as a guide in determining what initiatives the organisation should embark on to improve employee retention.
- Full Text:
- Date Issued: 2011
- Authors: Guma, Pendulwa Vuyokazi
- Date: 2011
- Subjects: Employee retention , Organizational change , Employee motivation
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8616 , http://hdl.handle.net/10948/1530 , Employee retention , Organizational change , Employee motivation
- Description: Organisations must have a constant influx of candidates for potential employment. New employee positions are required as market areas are expanded. Recruitment occurs even in the face of limited growth or decline in service capacity, because individuals with specialised skills or training who leave the organisation must be replaced, and because services or technologies that have been revised or modified must be staffed. The recruitment of personnel plays an important role in assisting the organisation to adapt and remain competitive. The Eastern Cape Department of Economic Development and Environmental Affairs (DEDEA) employs a wide variety of workers. Thus, the sources of applicants and types of methods used to expand the applicant pool vary depending on the occupational classification being considered. It, therefore, becomes self-defeating to invest significant resources in a recruitment effort if such effort is offset by high turnover rates. Retention of employees is as essential as their recruitment. The purpose of this study was to investigate the organisational factors impacting on employee retention at DEDEA. The population for the study included 781 DEDEA employees. The response rate for the emailed questionnaire was 54 percent or 425 respondents. The Likert-type scale instrument consisted of forty questions divided into two sections: Section one looked at the demographic profile of the respondents and section two focused on getting responses on the five organisational impacting on v employee retention, namely: career development; compensation; positive recognition; staff engagement and management. In order to achieve the purpose of this study, the following research design was adopted: Step 1 A literature review was conducted to determine the various organizational factors impacting on employee retention. Step 2 From the literature review, a process model was adopted to assist the researcher in structuring the research questionnaire. Step 3 A questionnaire was constructed according to the principles and guidelines in steps 2 and step 3. Step 4 Empirical data was obtained by means of an email survey. Step 5 The results of the survey were analysed and interpreted. Step 6 The empirical results were integrated with Step 3. Step 7 Conclusions and recommendations were done. The main findings from the study were: - The study revealed a significant relationship between the selected organisational factors and employee retention. - The study also produced a model suitable for use by DEDEA as a guide in determining what initiatives the organisation should embark on to improve employee retention.
- Full Text:
- Date Issued: 2011
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