Fishes of the deep demersal habitat at Ngazidja (Grand Comoro) Island, Western Indian Ocean
- Heemstra, P C, Hissmann, K, Fricke, H
- Authors: Heemstra, P C , Hissmann, K , Fricke, H
- Date: 2006
- Language: English
- Type: text , Article
- Identifier: vital:7158 , http://hdl.handle.net/10962/d1011885
- Description: Underwater observations of the coelacanth, Latimeria chalumnae Smith, 1939, from a research submersible provided opportunities to study the deep demersal fish fauna at the Comoro Islands. The demersal habitat in depths of 150–400 m at the volcanic island of Ngazidja is low in fish diversity and biomass, compared with the shallow-water coral reef habitat of Ngazidja or the deep demersal habitats of other localities in the Indo-Pacific region. The resident deep demersal fish fauna at Ngazidja is dominated by the coelacanth, an ancient predator that is specially adapted for this low-energy environment. Other large fish predators are scarce in this environment, because of the heavy fishing pressure from local fishermen. Eighty-nine fish taxa (including 65 recognizable species) were recorded from videotapes, photographs, visual observations, fishermen’s catches and ancillary attempts to sample the fish fauna with baited fish traps, gill nets, and hook and line. Although no coelacanth feeding events were seen, seven fish species are known from coelacanth stomach contents, and 64 other fish species in this habitat are considered potential prey of this dominant predator.
- Full Text:
- Date Issued: 2006
- Authors: Heemstra, P C , Hissmann, K , Fricke, H
- Date: 2006
- Language: English
- Type: text , Article
- Identifier: vital:7158 , http://hdl.handle.net/10962/d1011885
- Description: Underwater observations of the coelacanth, Latimeria chalumnae Smith, 1939, from a research submersible provided opportunities to study the deep demersal fish fauna at the Comoro Islands. The demersal habitat in depths of 150–400 m at the volcanic island of Ngazidja is low in fish diversity and biomass, compared with the shallow-water coral reef habitat of Ngazidja or the deep demersal habitats of other localities in the Indo-Pacific region. The resident deep demersal fish fauna at Ngazidja is dominated by the coelacanth, an ancient predator that is specially adapted for this low-energy environment. Other large fish predators are scarce in this environment, because of the heavy fishing pressure from local fishermen. Eighty-nine fish taxa (including 65 recognizable species) were recorded from videotapes, photographs, visual observations, fishermen’s catches and ancillary attempts to sample the fish fauna with baited fish traps, gill nets, and hook and line. Although no coelacanth feeding events were seen, seven fish species are known from coelacanth stomach contents, and 64 other fish species in this habitat are considered potential prey of this dominant predator.
- Full Text:
- Date Issued: 2006
Rewarding tax compliance: taxpayers’ attitudes and beliefs
- Bornman, Marina, Stack, Elizabeth M
- Authors: Bornman, Marina , Stack, Elizabeth M
- Date: 2015
- Subjects: To be catalogued
- Language: English
- Type: article , text
- Identifier: http://hdl.handle.net/10962/61039 , vital:27931
- Description: In a society the tax climate is determined by the interaction between taxpayers and tax authorities. In a ‘service and client’ climate, taxpayers do not expect authorities to automatically suspect them of being tax evaders. Evidence suggests that recognising good tax behaviour with strategies of rewards has a positive effect on voluntary tax compliance. Principles derived from the cognitive evaluation theory predict that when feelings of competence are affirmed and this is accompanied by a sense of autonomy it can enhance the intrinsic motivation for an action. The present research surveyed the attitudes and beliefs of taxpayers involved in small business on being rewarded for tax compliance. Results were corroborated with the principles of the cognitive evaluation theory and it was found that that the principles of the theory are applicable to rewarding tax compliance behaviour.
- Full Text:
- Date Issued: 2015
- Authors: Bornman, Marina , Stack, Elizabeth M
- Date: 2015
- Subjects: To be catalogued
- Language: English
- Type: article , text
- Identifier: http://hdl.handle.net/10962/61039 , vital:27931
- Description: In a society the tax climate is determined by the interaction between taxpayers and tax authorities. In a ‘service and client’ climate, taxpayers do not expect authorities to automatically suspect them of being tax evaders. Evidence suggests that recognising good tax behaviour with strategies of rewards has a positive effect on voluntary tax compliance. Principles derived from the cognitive evaluation theory predict that when feelings of competence are affirmed and this is accompanied by a sense of autonomy it can enhance the intrinsic motivation for an action. The present research surveyed the attitudes and beliefs of taxpayers involved in small business on being rewarded for tax compliance. Results were corroborated with the principles of the cognitive evaluation theory and it was found that that the principles of the theory are applicable to rewarding tax compliance behaviour.
- Full Text:
- Date Issued: 2015
Intraspecific mitochondrial gene variation can be as low as that of nuclear rRNA:
- Matumba, Tshifhiwa G, Oliver, Jody, Barker, Nigel P, McQuaid, Christopher D, Teske, Peter R
- Authors: Matumba, Tshifhiwa G , Oliver, Jody , Barker, Nigel P , McQuaid, Christopher D , Teske, Peter R
- Date: 2020
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/160401 , vital:40442 , https://doi.org/10.12688/f1000research.23635.2
- Description: Mitochondrial DNA (mtDNA) has long been used to date historical demographic events. The idea that it is useful for molecular dating rests on the premise that its evolution is neutral. Even though this idea has long been challenged, the evidence against clock-like evolution of mtDNA is often ignored. Here, we present a particularly clear and simple example to illustrate the implications of violations of the assumption of selective neutrality.
- Full Text:
- Date Issued: 2020
- Authors: Matumba, Tshifhiwa G , Oliver, Jody , Barker, Nigel P , McQuaid, Christopher D , Teske, Peter R
- Date: 2020
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/160401 , vital:40442 , https://doi.org/10.12688/f1000research.23635.2
- Description: Mitochondrial DNA (mtDNA) has long been used to date historical demographic events. The idea that it is useful for molecular dating rests on the premise that its evolution is neutral. Even though this idea has long been challenged, the evidence against clock-like evolution of mtDNA is often ignored. Here, we present a particularly clear and simple example to illustrate the implications of violations of the assumption of selective neutrality.
- Full Text:
- Date Issued: 2020
Shame, divine cannibalism, and the spectacle of subaltern suffering in Ken Barris's What Kind of Child:
- Authors: Marais, Mike
- Date: 2014
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/144028 , vital:38304 , https://hdl.handle.net/10520/EJC171544
- Description: This essay examines the aesthetic and ethical dimensions of Ken Barns's portrayal of the life of a street child in What Kind of Child. Responses to literary representations of subaltem suffering are sharply divided. On the one hand, there is the commonsense view that such representations require one to imagine what the situation of other people may be like, and that, in doing so, one opens oneself to their experience of life. To the extent that representations of suffering inspire one to reflect on one's relations to others, they are salutary. On the other hand, though, such depictions, like poverty tourism, may be accused of providing a spectacle of distant suffering that one vicariously experiences from a position of privilege and then dircards.
- Full Text:
- Date Issued: 2014
- Authors: Marais, Mike
- Date: 2014
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/144028 , vital:38304 , https://hdl.handle.net/10520/EJC171544
- Description: This essay examines the aesthetic and ethical dimensions of Ken Barns's portrayal of the life of a street child in What Kind of Child. Responses to literary representations of subaltem suffering are sharply divided. On the one hand, there is the commonsense view that such representations require one to imagine what the situation of other people may be like, and that, in doing so, one opens oneself to their experience of life. To the extent that representations of suffering inspire one to reflect on one's relations to others, they are salutary. On the other hand, though, such depictions, like poverty tourism, may be accused of providing a spectacle of distant suffering that one vicariously experiences from a position of privilege and then dircards.
- Full Text:
- Date Issued: 2014
The Educational Journal
- Date: 1966-02
- Subjects: Education –- South Africa , South Africa -- Politics and government , Government, Resistance to -- South Africa
- Language: English
- Type: text , Article
- Identifier: http://hdl.handle.net/10948/34397 , vital:33373 , Bulk File 7
- Description: The Educational Journal was the official organ of the Teachers' League of South Africa and focussed on education within the context of a racialized South Africa.
- Full Text: false
- Date Issued: 1966-02
- Date: 1966-02
- Subjects: Education –- South Africa , South Africa -- Politics and government , Government, Resistance to -- South Africa
- Language: English
- Type: text , Article
- Identifier: http://hdl.handle.net/10948/34397 , vital:33373 , Bulk File 7
- Description: The Educational Journal was the official organ of the Teachers' League of South Africa and focussed on education within the context of a racialized South Africa.
- Full Text: false
- Date Issued: 1966-02
Imagining Civil Society in Zimbabwe and ‘Most of the World’:
- Authors: Helliker, Kirk D
- Date: 2014
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/144802 , vital:38380 , ISBN 9781461482628 , DOI: 10.1007/978-1-4614-8262-8_11
- Description: This chapter re-visits the notion of civil society in what Partha Chatterjee (The Politics of the Governed, 2004) calls ‘most of the world’ (beyond the capitalist metropoles) and, in doing so, uses Zimbabwe (and Africa more broadly) as an entry point into the literature on civil society. This chapter consists of four main sections. First, I discuss literature on civil society in Africa which, in the main, dichotomises civil society and the state empirically without any sustained theoretical reflections. Second, I provide an overview of Zimbabwean society and politics over the past decade and the ensuing debate, which in many ways produces a Manichean dualism whereby civil society is equated with progression and the state with regression. Third, I locate this conceptualisation of civil society within the broader international literature on civil society. These three sections, as a whole, highlight slippages in defining and understanding civil society: between civil society as a set of empirically identifiable organisational formations and civil society as a social space marked by civil liberties and voluntary arrangements in bourgeois society. Finally, I reimagine civil society in relation to ‘most of the world’.
- Full Text:
- Date Issued: 2014
- Authors: Helliker, Kirk D
- Date: 2014
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/144802 , vital:38380 , ISBN 9781461482628 , DOI: 10.1007/978-1-4614-8262-8_11
- Description: This chapter re-visits the notion of civil society in what Partha Chatterjee (The Politics of the Governed, 2004) calls ‘most of the world’ (beyond the capitalist metropoles) and, in doing so, uses Zimbabwe (and Africa more broadly) as an entry point into the literature on civil society. This chapter consists of four main sections. First, I discuss literature on civil society in Africa which, in the main, dichotomises civil society and the state empirically without any sustained theoretical reflections. Second, I provide an overview of Zimbabwean society and politics over the past decade and the ensuing debate, which in many ways produces a Manichean dualism whereby civil society is equated with progression and the state with regression. Third, I locate this conceptualisation of civil society within the broader international literature on civil society. These three sections, as a whole, highlight slippages in defining and understanding civil society: between civil society as a set of empirically identifiable organisational formations and civil society as a social space marked by civil liberties and voluntary arrangements in bourgeois society. Finally, I reimagine civil society in relation to ‘most of the world’.
- Full Text:
- Date Issued: 2014
Making meaning of citizenship: how ‘born frees’ use media in South Africa's democratic evolution
- Malila, Vanessa, Oeofsen, Marietjie, Garman, Anthea
- Authors: Malila, Vanessa , Oeofsen, Marietjie , Garman, Anthea
- Date: 2013
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/159790 , vital:40344 , DOI: 10.1080/02500167.2013.852598
- Description: By examining young people's habits of using the media in relation to citizenship, this article responds to calls that the starting point for research into citizenship and democracy should be the perspectives of citizens themselves. Drawing on both quantitative and qualitative research with young South Africans (the ‘born free’ generation), the study sought to gain insight into how young people use media to make sense of notions of citizenship and participatory democracy in ways that are relevant and reliable to their everyday lives.
- Full Text:
- Date Issued: 2013
- Authors: Malila, Vanessa , Oeofsen, Marietjie , Garman, Anthea
- Date: 2013
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/159790 , vital:40344 , DOI: 10.1080/02500167.2013.852598
- Description: By examining young people's habits of using the media in relation to citizenship, this article responds to calls that the starting point for research into citizenship and democracy should be the perspectives of citizens themselves. Drawing on both quantitative and qualitative research with young South Africans (the ‘born free’ generation), the study sought to gain insight into how young people use media to make sense of notions of citizenship and participatory democracy in ways that are relevant and reliable to their everyday lives.
- Full Text:
- Date Issued: 2013
The Interplay between Universal and Unique Contexts in Shaping Child Developmental Assessment
- Authors: Stroud, Louise
- Subjects: Child development -- Testing , Developmental psychology , f-sa
- Language: English
- Type: text , Lectures
- Identifier: http://hdl.handle.net/10948/21088 , vital:29437
- Description: In this lecture the revision of the Griffiths Scales of Child Development, or Griffiths III as it is now known, will be described. It is not a description or story that falls easily and smoothly into sequence. It is one that has been garnered from many sources and from many people. Some of it comes in the form of fragments from professional men and women who have looked upon developing children with a unique and unrelenting eye. It comes from men and women who carry the germ of knowledge, implanted somewhere deeply in their beings, a place where a curious, natural rhythm exists and a kind of magic. Additionally a suggested plan for the future or “what next” phase in the interplay between universal and unique contexts in shaping child developmental assessment specifically using the Griffiths III will be described and proposed.
- Full Text:
- Authors: Stroud, Louise
- Subjects: Child development -- Testing , Developmental psychology , f-sa
- Language: English
- Type: text , Lectures
- Identifier: http://hdl.handle.net/10948/21088 , vital:29437
- Description: In this lecture the revision of the Griffiths Scales of Child Development, or Griffiths III as it is now known, will be described. It is not a description or story that falls easily and smoothly into sequence. It is one that has been garnered from many sources and from many people. Some of it comes in the form of fragments from professional men and women who have looked upon developing children with a unique and unrelenting eye. It comes from men and women who carry the germ of knowledge, implanted somewhere deeply in their beings, a place where a curious, natural rhythm exists and a kind of magic. Additionally a suggested plan for the future or “what next” phase in the interplay between universal and unique contexts in shaping child developmental assessment specifically using the Griffiths III will be described and proposed.
- Full Text:
Politics, latent and overt, in Hill of Fools
- Authors: Wright, Laurence
- Date: 2004
- Language: English
- Type: Article
- Identifier: vital:7064 , http://hdl.handle.net/10962/d1007430
- Description: [From the text]: R. L. Peteni’s novel Hill of Fools (1976) is a work that benefits greatly when Collingwood’s maxim is observed. The author’s family history and the circumstances surrounding the book’s publication add a dimension of political and social meaning which its surface deliberately occludes. Perhaps more importantly, while the story can readily be enjoyed, the quality of sensibility behind the work is not readily accessed without understanding some of the socio-political background.
- Full Text:
- Date Issued: 2004
- Authors: Wright, Laurence
- Date: 2004
- Language: English
- Type: Article
- Identifier: vital:7064 , http://hdl.handle.net/10962/d1007430
- Description: [From the text]: R. L. Peteni’s novel Hill of Fools (1976) is a work that benefits greatly when Collingwood’s maxim is observed. The author’s family history and the circumstances surrounding the book’s publication add a dimension of political and social meaning which its surface deliberately occludes. Perhaps more importantly, while the story can readily be enjoyed, the quality of sensibility behind the work is not readily accessed without understanding some of the socio-political background.
- Full Text:
- Date Issued: 2004
Resistance or tolerance: an examination of aphid (Sitobion yakini) phloem feeding on Betta and Betta-Dn wheat (Triticum aestivum)
- De Wet, L R, Botha, Christiaan E J
- Authors: De Wet, L R , Botha, Christiaan E J
- Date: 2007
- Language: English
- Type: Article
- Identifier: vital:6517 , http://hdl.handle.net/10962/d1005945
- Description: Engineering pest resistance into crops is important. However, the mechanisms of resistance are not clearly understood. In this study, we examined the effects of aphid feeding on Russian wheat aphid-resistant and -susceptible cultivars of wheat (Triticum aestivum L.); Betta-Dn and Betta, respectively, by the grass aphid, Sitobion yakini (Eastop). These cultivars were grown with or without aphid colonies. In each case, we examined the plants specifically for the formation of wound callose associated with the phloem, using aniline blue and fluorescence microscopy. We observed that aphid feeding stimulated the formation of wound callose in the susceptible cultivar, but that callose was comparatively reduced in the resistant cultivar of wheat. In a separate series of experiments, the xenobiotic, 5, 6-carboxyfluorescein diacetate was applied to attached sink leaves, distal to feeding aphids. When leaf segments were examined four hours after application, little evidence of phloem transport of the fluorescent cleavage product, 5, 6-carboxyfluorescein (5, 6-CF), was evident below known aphid-probed sieve tubes. Low levels or absence of 5, 6-CF indicates that either the aphids have successfully redirected sap to themselves, or that the phloem is no longer functional. In contrast, 5, 6-CF transport was evident below sites of aphid probing in Betta-Dn, suggesting that the phloem was still capable of long-distance transport. In addition, callose deposition was reduced in Betta-Dn leaf phloem and it is surmised that transport was not as affected by aphid feeding in the resistant cultivar. This indicates that the ‘resistant’ wheat cultivar may in fact be tolerant to aphid feeding by successfully overcoming the nutrient drain that feeding aphids imposed on the phloem transport system.
- Full Text:
- Date Issued: 2007
- Authors: De Wet, L R , Botha, Christiaan E J
- Date: 2007
- Language: English
- Type: Article
- Identifier: vital:6517 , http://hdl.handle.net/10962/d1005945
- Description: Engineering pest resistance into crops is important. However, the mechanisms of resistance are not clearly understood. In this study, we examined the effects of aphid feeding on Russian wheat aphid-resistant and -susceptible cultivars of wheat (Triticum aestivum L.); Betta-Dn and Betta, respectively, by the grass aphid, Sitobion yakini (Eastop). These cultivars were grown with or without aphid colonies. In each case, we examined the plants specifically for the formation of wound callose associated with the phloem, using aniline blue and fluorescence microscopy. We observed that aphid feeding stimulated the formation of wound callose in the susceptible cultivar, but that callose was comparatively reduced in the resistant cultivar of wheat. In a separate series of experiments, the xenobiotic, 5, 6-carboxyfluorescein diacetate was applied to attached sink leaves, distal to feeding aphids. When leaf segments were examined four hours after application, little evidence of phloem transport of the fluorescent cleavage product, 5, 6-carboxyfluorescein (5, 6-CF), was evident below known aphid-probed sieve tubes. Low levels or absence of 5, 6-CF indicates that either the aphids have successfully redirected sap to themselves, or that the phloem is no longer functional. In contrast, 5, 6-CF transport was evident below sites of aphid probing in Betta-Dn, suggesting that the phloem was still capable of long-distance transport. In addition, callose deposition was reduced in Betta-Dn leaf phloem and it is surmised that transport was not as affected by aphid feeding in the resistant cultivar. This indicates that the ‘resistant’ wheat cultivar may in fact be tolerant to aphid feeding by successfully overcoming the nutrient drain that feeding aphids imposed on the phloem transport system.
- Full Text:
- Date Issued: 2007
‘There is nothing to hold onto here’:
- Shabangu, Samuel M, Babu, Balaji, Soy, Rodah C, Managa, Muthumuni, Sekhosana, Kutloano E, Nyokong, Tebello
- Authors: Shabangu, Samuel M , Babu, Balaji , Soy, Rodah C , Managa, Muthumuni , Sekhosana, Kutloano E , Nyokong, Tebello
- Date: 2020
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/156410 , vital:39987 , DOI: 10.1080/00958972.2020.1739273
- Description: Asymmetric mono-carboxy-porphyrins, (5-(4-carboxyphenyl)−10,15,20-tris(pentafluorophenyl)porphyrinato zinc(II) (1), 5-(4-carboxyphenyl)−10,15,20-triphenylporphyrinato zinc(II) (2) and 5-(4-carboxyphenyl)−10,15,20-tris(2-thienyl)porphyrinato zinc(II) (3), were linked to Ag nanoparticles (AgNPs) through amide bonds and self-assembly (the latter only for 3). The porphyrins and conjugates were used for photodynamic antimicrobial chemotherapy (PACT) against Staphylococcus aureus. PACT uses singlet oxygen for antimicrobial activity. Complex 3 and its conjugates had higher singlet oxygen quantum yields and higher log reduction when compared with the rest of the porphyrins and corresponding conjugates. These high log reductions for 3 and its conjugate were attributed to the presence of sulfur groups whereby there was more interaction with the bacterial membrane.
- Full Text:
- Date Issued: 2020
- Authors: Shabangu, Samuel M , Babu, Balaji , Soy, Rodah C , Managa, Muthumuni , Sekhosana, Kutloano E , Nyokong, Tebello
- Date: 2020
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/156410 , vital:39987 , DOI: 10.1080/00958972.2020.1739273
- Description: Asymmetric mono-carboxy-porphyrins, (5-(4-carboxyphenyl)−10,15,20-tris(pentafluorophenyl)porphyrinato zinc(II) (1), 5-(4-carboxyphenyl)−10,15,20-triphenylporphyrinato zinc(II) (2) and 5-(4-carboxyphenyl)−10,15,20-tris(2-thienyl)porphyrinato zinc(II) (3), were linked to Ag nanoparticles (AgNPs) through amide bonds and self-assembly (the latter only for 3). The porphyrins and conjugates were used for photodynamic antimicrobial chemotherapy (PACT) against Staphylococcus aureus. PACT uses singlet oxygen for antimicrobial activity. Complex 3 and its conjugates had higher singlet oxygen quantum yields and higher log reduction when compared with the rest of the porphyrins and corresponding conjugates. These high log reductions for 3 and its conjugate were attributed to the presence of sulfur groups whereby there was more interaction with the bacterial membrane.
- Full Text:
- Date Issued: 2020
Blind spots: trickery and the'opaque stickiness' of seeing
- Authors: Simbao, Ruth K
- Date: 2015
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/147303 , vital:38624 , https://0-hdl.handle.net.wam.seals.ac.za/10520/EJC176319
- Description: In a flash the spot will disappear, and in its place - and this is the interesting thing - there is nothing. According to experimental psychology, the eye does not fill in the blind spot, but tricks us into thinking that it has been filled. The blind spot is pure absence of vision, and cannot be experienced at all. The blind spot is an invisible absence : an absence whose invisibility is itself invisible (Elkins 1996 : 170).
- Full Text:
- Date Issued: 2015
- Authors: Simbao, Ruth K
- Date: 2015
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/147303 , vital:38624 , https://0-hdl.handle.net.wam.seals.ac.za/10520/EJC176319
- Description: In a flash the spot will disappear, and in its place - and this is the interesting thing - there is nothing. According to experimental psychology, the eye does not fill in the blind spot, but tricks us into thinking that it has been filled. The blind spot is pure absence of vision, and cannot be experienced at all. The blind spot is an invisible absence : an absence whose invisibility is itself invisible (Elkins 1996 : 170).
- Full Text:
- Date Issued: 2015
Global diversity of mayflies (Ephemeroptera, Insecta) in freshwater
- Barber-James, Helen M, Gattolliat, Jean-Luc, Sartori, Michel, Hubbard, Michael D
- Authors: Barber-James, Helen M , Gattolliat, Jean-Luc , Sartori, Michel , Hubbard, Michael D
- Date: 2007
- Language: English
- Type: Article
- Identifier: vital:7002 , http://hdl.handle.net/10962/d1008361
- Description: The extant global Ephemeroptera fauna is represented by over 3,000 described species in 42 families and more than 400 genera. The highest generic diversity occurs in the Neotropics, with a correspondingly high species diversity, while the Palaearctic has the lowest generic diversity, but a high species diversity. Such distribution patterns may relate to how long evolutionary processes have been carrying on in isolation in a bioregion. Over an extended period, there may be extinction of species, but evolution of more genera. Dramatic extinction events such as the K-T mass extinction have affected current mayfly diversity and distribution. Climatic history plays an important role in the rate of speciation in an area, with regions which have been climatically stable over long periods having fewer species per genus, when compared to regions subjected to climatic stresses, such as glaciation. A total of 13 families are endemic to specific bioregions, with eight among them being monospecific. Most of these have restricted distributions which may be the result of them being the relict of a previously more diverse, but presently almost completely extinct family, or may be the consequence of vicariance events, resulting from evolution due to long-term isolation.
- Full Text:
- Date Issued: 2007
- Authors: Barber-James, Helen M , Gattolliat, Jean-Luc , Sartori, Michel , Hubbard, Michael D
- Date: 2007
- Language: English
- Type: Article
- Identifier: vital:7002 , http://hdl.handle.net/10962/d1008361
- Description: The extant global Ephemeroptera fauna is represented by over 3,000 described species in 42 families and more than 400 genera. The highest generic diversity occurs in the Neotropics, with a correspondingly high species diversity, while the Palaearctic has the lowest generic diversity, but a high species diversity. Such distribution patterns may relate to how long evolutionary processes have been carrying on in isolation in a bioregion. Over an extended period, there may be extinction of species, but evolution of more genera. Dramatic extinction events such as the K-T mass extinction have affected current mayfly diversity and distribution. Climatic history plays an important role in the rate of speciation in an area, with regions which have been climatically stable over long periods having fewer species per genus, when compared to regions subjected to climatic stresses, such as glaciation. A total of 13 families are endemic to specific bioregions, with eight among them being monospecific. Most of these have restricted distributions which may be the result of them being the relict of a previously more diverse, but presently almost completely extinct family, or may be the consequence of vicariance events, resulting from evolution due to long-term isolation.
- Full Text:
- Date Issued: 2007
Presidential Address
- Date: 1962-04
- Subjects: Government, Resistance to -- South Africa , South Africa -- History -- 20th century , South Africa -- Politics and government
- Language: English
- Type: text , Article
- Identifier: http://hdl.handle.net/10948/33978 , vital:33171 , Bulk File 7
- Description: This is a Presidential Address given by the notable IB Tabata at APDUSA's first National Conference.
- Full Text: false
- Date Issued: 1962-04
- Date: 1962-04
- Subjects: Government, Resistance to -- South Africa , South Africa -- History -- 20th century , South Africa -- Politics and government
- Language: English
- Type: text , Article
- Identifier: http://hdl.handle.net/10948/33978 , vital:33171 , Bulk File 7
- Description: This is a Presidential Address given by the notable IB Tabata at APDUSA's first National Conference.
- Full Text: false
- Date Issued: 1962-04
Colonial tales, alter-narratives and the enduring value of anthropology
- Authors: Boswell, Rose
- Subjects: Anthrology , Oral tradition , f-sa
- Language: English
- Type: text , Lectures
- Identifier: http://hdl.handle.net/10948/20989 , vital:29425
- Description: Stories and story-telling are fundamental to human beings. What stories do we choose to tell, hear and relate? From childhood through to adulthood, stories and story-telling provide social content, example, advice, therapy, continuity, connection and entertainment. Story-telling is also a space for hidden resistance, embodiment and the invocation of rank. Accompanied by song and dance, those intangible heritages which must remain dynamic to endure, stories facilitate an aural and oral community that engenders its own understanding of time, place and identity. In anthropology, the study of humanity in all its complexities, there is the collection, collation and retelling of stories for audiences who would otherwise not understand or seek to essentialise those deemed ‗other‘. In this inaugural lecture I focus on the value of stories gathered from anthropological field research in the southwest Indian Ocean Islands. The stories (often constitutive of a multiply-situated self), shed light on the finer details of gendered, ethnic and raced existence in the island communities. They also offer deep insight into the nature and possible ‗evolutions‘ of contemporary societies. Finally, I suggest that alter-narratives, those stories rarely told, provide access not only to multiple worlds, they are part of an aural epistemology which might lead to alternative ways of connecting with others and thereby conceptualising and articulating identity in our contemporary global society.
- Full Text:
- Authors: Boswell, Rose
- Subjects: Anthrology , Oral tradition , f-sa
- Language: English
- Type: text , Lectures
- Identifier: http://hdl.handle.net/10948/20989 , vital:29425
- Description: Stories and story-telling are fundamental to human beings. What stories do we choose to tell, hear and relate? From childhood through to adulthood, stories and story-telling provide social content, example, advice, therapy, continuity, connection and entertainment. Story-telling is also a space for hidden resistance, embodiment and the invocation of rank. Accompanied by song and dance, those intangible heritages which must remain dynamic to endure, stories facilitate an aural and oral community that engenders its own understanding of time, place and identity. In anthropology, the study of humanity in all its complexities, there is the collection, collation and retelling of stories for audiences who would otherwise not understand or seek to essentialise those deemed ‗other‘. In this inaugural lecture I focus on the value of stories gathered from anthropological field research in the southwest Indian Ocean Islands. The stories (often constitutive of a multiply-situated self), shed light on the finer details of gendered, ethnic and raced existence in the island communities. They also offer deep insight into the nature and possible ‗evolutions‘ of contemporary societies. Finally, I suggest that alter-narratives, those stories rarely told, provide access not only to multiple worlds, they are part of an aural epistemology which might lead to alternative ways of connecting with others and thereby conceptualising and articulating identity in our contemporary global society.
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Rhodes University Graduation Ceremony 1991
- Authors: Rhodes University
- Date: 1991
- Subjects: Relly, Gavin Walter Hamilton
- Language: English
- Type: text
- Identifier: vital:8125 , http://hdl.handle.net/10962/d1006750 , Relly, Gavin Walter Hamilton
- Description: Rhodes University Graduation Ceremonies Friday, 12 April 1991 at 8 p.m. [and] Saturday, 13 April 1991 at 10 a.m. in the 1820 Settlers National Monument. , Rhodes University East London Graduation Ceremony Saturday, 18 May 1991 at 10.00 a.m. in the Guild Theatre. , The Installation of Gavin Walter Hamilton Relly as Chancellor of Rhodes University to be followed by a Graduation Ceremony Friday, 12 April 1991 at 10 a.m. in the 1820 Settlers National Monument.
- Full Text:
- Date Issued: 1991
- Authors: Rhodes University
- Date: 1991
- Subjects: Relly, Gavin Walter Hamilton
- Language: English
- Type: text
- Identifier: vital:8125 , http://hdl.handle.net/10962/d1006750 , Relly, Gavin Walter Hamilton
- Description: Rhodes University Graduation Ceremonies Friday, 12 April 1991 at 8 p.m. [and] Saturday, 13 April 1991 at 10 a.m. in the 1820 Settlers National Monument. , Rhodes University East London Graduation Ceremony Saturday, 18 May 1991 at 10.00 a.m. in the Guild Theatre. , The Installation of Gavin Walter Hamilton Relly as Chancellor of Rhodes University to be followed by a Graduation Ceremony Friday, 12 April 1991 at 10 a.m. in the 1820 Settlers National Monument.
- Full Text:
- Date Issued: 1991
Planning for the future: mapping anticipated environmental and social impacts in a nascent tourism destination
- Aswani, Shankar, Diedrich, Amy, Currier, Kitty
- Authors: Aswani, Shankar , Diedrich, Amy , Currier, Kitty
- Date: 2015
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/145415 , vital:38436 , DOI: 10.1080/08941920.2015.1020582
- Description: Tourism is a significant driver of social and ecological change in developing countries, particularly in small-island states, which are susceptible to tourism impacts due to their particular social and environmental characteristics. In this article we present a participatory mapping approach to obtaining spatially explicit local perceptions of future environmental and social change resulting from tourism development, as well as addressing the different community conflicts that may arise through the introduction of tourism in the future in a Solomon Islands community. The results show that spatial conflicts within a community over territory and associated resources are likely to occur when designing natural resource management and tourism development plans. This knowledge can help us increase the future sustainability of tourism in nascent small-islands destinations, particularly in vulnerable regions such as Roviana, which have experienced very little tourism development and will likely experience more in the near future.
- Full Text:
- Date Issued: 2015
- Authors: Aswani, Shankar , Diedrich, Amy , Currier, Kitty
- Date: 2015
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/145415 , vital:38436 , DOI: 10.1080/08941920.2015.1020582
- Description: Tourism is a significant driver of social and ecological change in developing countries, particularly in small-island states, which are susceptible to tourism impacts due to their particular social and environmental characteristics. In this article we present a participatory mapping approach to obtaining spatially explicit local perceptions of future environmental and social change resulting from tourism development, as well as addressing the different community conflicts that may arise through the introduction of tourism in the future in a Solomon Islands community. The results show that spatial conflicts within a community over territory and associated resources are likely to occur when designing natural resource management and tourism development plans. This knowledge can help us increase the future sustainability of tourism in nascent small-islands destinations, particularly in vulnerable regions such as Roviana, which have experienced very little tourism development and will likely experience more in the near future.
- Full Text:
- Date Issued: 2015
New Unity Movement Special Bulletin
- Date: 2013-03
- Subjects: Government, Resistance to -- South Africa , South Africa -- History -- 20th century
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10948/32397 , vital:32100 , Bulk File 7
- Description: The Bulletin was the official newsletter of the New Unity Movement. It was published about twice a year and contained articles reflecting the organisation's views on resistance to the Apartheid government
- Full Text: false
- Date Issued: 2013-03
- Date: 2013-03
- Subjects: Government, Resistance to -- South Africa , South Africa -- History -- 20th century
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10948/32397 , vital:32100 , Bulk File 7
- Description: The Bulletin was the official newsletter of the New Unity Movement. It was published about twice a year and contained articles reflecting the organisation's views on resistance to the Apartheid government
- Full Text: false
- Date Issued: 2013-03
Impediments to the delivery of socioeconomic rights in South Africa
- Authors: Roodt, Monty J
- Date: 2008
- Language: English
- Type: Conference paper
- Identifier: vital:6318 , http://hdl.handle.net/10962/d1011315
- Description: [from the Introduction] The purpose of including Second and Third Generation (STG) rights in a constitution is to provide guidelines to lawmakers to formulate policy and to enable the courts to intervene where these policies are not being implemented satisfactorily. In theory these rights allow citizens to demand from the state access to basic needs, such as adequate land, housing, education, health care, nutrition, and social security. However, this inclusion of rights in the constitution often does not translate into action. The first reason for this is that Second and Third Generation rights may clash with First Generation rights. For example the right to private property may, and in South Africa does, contradict the need for land for the majority. The major problem is whether the policies flowing out of Second and Third Generation rights are pursued with enough vigour by governments, the private sector, primary groups and individuals to overcome this contradiction. In many countries in the world it is the poorest sections of the population, and as Mamdani (1996) pointed out, migrant non-citizens, that bear the brunt of administrative and bureaucratic bungling and neglect.
- Full Text:
- Date Issued: 2008
- Authors: Roodt, Monty J
- Date: 2008
- Language: English
- Type: Conference paper
- Identifier: vital:6318 , http://hdl.handle.net/10962/d1011315
- Description: [from the Introduction] The purpose of including Second and Third Generation (STG) rights in a constitution is to provide guidelines to lawmakers to formulate policy and to enable the courts to intervene where these policies are not being implemented satisfactorily. In theory these rights allow citizens to demand from the state access to basic needs, such as adequate land, housing, education, health care, nutrition, and social security. However, this inclusion of rights in the constitution often does not translate into action. The first reason for this is that Second and Third Generation rights may clash with First Generation rights. For example the right to private property may, and in South Africa does, contradict the need for land for the majority. The major problem is whether the policies flowing out of Second and Third Generation rights are pursued with enough vigour by governments, the private sector, primary groups and individuals to overcome this contradiction. In many countries in the world it is the poorest sections of the population, and as Mamdani (1996) pointed out, migrant non-citizens, that bear the brunt of administrative and bureaucratic bungling and neglect.
- Full Text:
- Date Issued: 2008
Salvaging the law: the second Ernie Wentzel memorial lecture
- Authors: Didcott, J M
- Date: 1988-10-04
- Subjects: Civil rights -- South Africa , Terrorism -- South Africa
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/73347 , vital:30178 , 1868140954
- Description: A budding author bold enough to have sent his manuscript to Dr Samuel Johnson for appraisal received a reply, so the story goes, in these terms: ‘Sir. Your work is both original and good. Unfortunately the part that is good is not original. And the part that is original is not good. I find it difficult to say anything new or original about the lovable man whose life we celebrate this afternoon and whose memory we thus keep alive. For so much has been said in the tributes previously paid to him, tributes testifying to the place he occupied in the hearts of countless South Africans. What is good should prove easier, however, when it is said of someone whom, at the ceremony held in court soon after his death, Ralph Zulman described, simply and truly, as a good man. So, be it said how it may, what I shall say today about Ernie Wentzel feels good to say. Unless someone who is now a lawyer was acquainted with Ernie during his childhood or schooldays, I can rightly claim, I believe, that none still around knew him for more years than I did. Our long friendship may explain why John Dugard honoured me with the invitation to deliver this lecture. It was certainly my reason for accepting the invitation with alacrity. Ernie and I first met each other 37 years ago, in 1951, when he entered the University of Cape Town, where I too was a student. I happened to be his senior by two years. But I soon got to know him well, for we had a lot in common. We were both enthusiastic student politicians. And we were in the same camp. Our time together on the campus was one of turmoil, not as acute as that which campuses have experienced subsequently, but intense nonetheless since, in addition to all the other strife of the period, the Universities of Cape T own and the W itwatersrand were under an attack that was constant and fierce for their policy of admitting students of every race, and they faced the threat of legislation forbidding them to accept any who was not white without official pennission.
- Full Text:
- Date Issued: 1988-10-04
- Authors: Didcott, J M
- Date: 1988-10-04
- Subjects: Civil rights -- South Africa , Terrorism -- South Africa
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/73347 , vital:30178 , 1868140954
- Description: A budding author bold enough to have sent his manuscript to Dr Samuel Johnson for appraisal received a reply, so the story goes, in these terms: ‘Sir. Your work is both original and good. Unfortunately the part that is good is not original. And the part that is original is not good. I find it difficult to say anything new or original about the lovable man whose life we celebrate this afternoon and whose memory we thus keep alive. For so much has been said in the tributes previously paid to him, tributes testifying to the place he occupied in the hearts of countless South Africans. What is good should prove easier, however, when it is said of someone whom, at the ceremony held in court soon after his death, Ralph Zulman described, simply and truly, as a good man. So, be it said how it may, what I shall say today about Ernie Wentzel feels good to say. Unless someone who is now a lawyer was acquainted with Ernie during his childhood or schooldays, I can rightly claim, I believe, that none still around knew him for more years than I did. Our long friendship may explain why John Dugard honoured me with the invitation to deliver this lecture. It was certainly my reason for accepting the invitation with alacrity. Ernie and I first met each other 37 years ago, in 1951, when he entered the University of Cape Town, where I too was a student. I happened to be his senior by two years. But I soon got to know him well, for we had a lot in common. We were both enthusiastic student politicians. And we were in the same camp. Our time together on the campus was one of turmoil, not as acute as that which campuses have experienced subsequently, but intense nonetheless since, in addition to all the other strife of the period, the Universities of Cape T own and the W itwatersrand were under an attack that was constant and fierce for their policy of admitting students of every race, and they faced the threat of legislation forbidding them to accept any who was not white without official pennission.
- Full Text:
- Date Issued: 1988-10-04