The impact of foreign debt on economic growth in South Africa
- Authors: Shayanewako, V B
- Date: 2013
- Subjects: Debts, External -- South Africa -- Eastern Cape , Investments, Foreign -- South Africa , Government spending policy -- South Africa , Economic development -- South Africa
- Language: English
- Type: Thesis , Masters , M Com
- Identifier: vital:11477 , http://hdl.handle.net/10353/d1015140 , Debts, External -- South Africa -- Eastern Cape , Investments, Foreign -- South Africa , Government spending policy -- South Africa , Economic development -- South Africa
- Description: This study analyses the economic impact between foreign debt and economic growth in South Africa. By fitting a production function model to annual data for the period 1980-2011, the study examines the dynamic effect of debt service, capital stock and labour force on the economic growth of the country. By following Cunningham (1993), it has identified the long-run and short-run causal relationships among the included variables. The results indicate that the debt servicing burden has a negative effect on the productivity of labour and capital, and thereby affect economic growth adversely. The results also illustrate that the debt service ratio tends to negatively affect GDP and the rate of economic growth in the long-run, which, in turn, reduces the ability of the country to service its debt. Similarly, the estimated error correction term shows the existence of a significant long-run causal relationship among the specified variables. Overall, the results suggest the existence of short-run and long-run causal relationships running from debt service to GDP.
- Full Text:
- Date Issued: 2013
- Authors: Shayanewako, V B
- Date: 2013
- Subjects: Debts, External -- South Africa -- Eastern Cape , Investments, Foreign -- South Africa , Government spending policy -- South Africa , Economic development -- South Africa
- Language: English
- Type: Thesis , Masters , M Com
- Identifier: vital:11477 , http://hdl.handle.net/10353/d1015140 , Debts, External -- South Africa -- Eastern Cape , Investments, Foreign -- South Africa , Government spending policy -- South Africa , Economic development -- South Africa
- Description: This study analyses the economic impact between foreign debt and economic growth in South Africa. By fitting a production function model to annual data for the period 1980-2011, the study examines the dynamic effect of debt service, capital stock and labour force on the economic growth of the country. By following Cunningham (1993), it has identified the long-run and short-run causal relationships among the included variables. The results indicate that the debt servicing burden has a negative effect on the productivity of labour and capital, and thereby affect economic growth adversely. The results also illustrate that the debt service ratio tends to negatively affect GDP and the rate of economic growth in the long-run, which, in turn, reduces the ability of the country to service its debt. Similarly, the estimated error correction term shows the existence of a significant long-run causal relationship among the specified variables. Overall, the results suggest the existence of short-run and long-run causal relationships running from debt service to GDP.
- Full Text:
- Date Issued: 2013
Morphological and genetic variation in samango monkeys (Cercopithecus albogularis) in Southern Africa
- Authors: Makhasi, Ntuthuzelo
- Date: 2013
- Subjects: Morphology , Genetics
- Language: English
- Type: Thesis , Masters , MSc (Zoology)
- Identifier: vital:11793 , http://hdl.handle.net/10353/d1018580 , Morphology , Genetics
- Description: My aim was to resolve the taxonomy of the South African forms of Cercopithecus albogularis by exploring morphological and genetic variation in the two samango subspecies described for the region: C. a. erythrarchus and C. a. labiatus. In addition, I estimated their geographic distributions and habitat requirements from the provenance data I collected during my study of museum specimens. My analysis has shown clear morphological differences between C. a. labiatus and C. a. erythrarchus. The two subspecies differ in pelage coloration, but also in cranial shape and tail lengths. Furthermore, C. a. labiatus is slightly smaller, shorter-tailed and stocky compared with the long-tailed slender northern forms of C. albogularis, which may be adaptations to cold environments like montane forest. The northern C. albogularis subspecies are distinguishable from the southern taxa with a high degree of reliability (98.5%), suggesting that C. albogularis consists of more than one species. The most appropriate name for the southern species is C. labiatus. My genetic study did not detect variation among the 10 animals sampled in Hogsback; while it clustered the different taxa, it could not resolve relationships between them, with the exception of the outgroup. The lack of resolution of the deeper nodes could be a result of the fact that our sequence was very short (274 bp). The mt 12S rRNA gene was not an ideal gene for this study, which should have involved a less conserved section of the mtDNA molecule, like the rapidly evolving D-loop. More genetic work is clearly needed to resolve the phylogenetic relationships within the C. mitis supergroup. However, preliminary genetic data indicate that the southern samangos are distinct from the C. mitis of West Africa, while my morphometric study suggests they may also be distinct from C. albogularis in East Africa. Molecular and karyological studies comparing the genomes of Hogsback “C. a. labiatus” with the neighbouring “C. a. erythrarchus” and Zanzibar C. albogularis would be extremely enlightening.
- Full Text:
- Date Issued: 2013
- Authors: Makhasi, Ntuthuzelo
- Date: 2013
- Subjects: Morphology , Genetics
- Language: English
- Type: Thesis , Masters , MSc (Zoology)
- Identifier: vital:11793 , http://hdl.handle.net/10353/d1018580 , Morphology , Genetics
- Description: My aim was to resolve the taxonomy of the South African forms of Cercopithecus albogularis by exploring morphological and genetic variation in the two samango subspecies described for the region: C. a. erythrarchus and C. a. labiatus. In addition, I estimated their geographic distributions and habitat requirements from the provenance data I collected during my study of museum specimens. My analysis has shown clear morphological differences between C. a. labiatus and C. a. erythrarchus. The two subspecies differ in pelage coloration, but also in cranial shape and tail lengths. Furthermore, C. a. labiatus is slightly smaller, shorter-tailed and stocky compared with the long-tailed slender northern forms of C. albogularis, which may be adaptations to cold environments like montane forest. The northern C. albogularis subspecies are distinguishable from the southern taxa with a high degree of reliability (98.5%), suggesting that C. albogularis consists of more than one species. The most appropriate name for the southern species is C. labiatus. My genetic study did not detect variation among the 10 animals sampled in Hogsback; while it clustered the different taxa, it could not resolve relationships between them, with the exception of the outgroup. The lack of resolution of the deeper nodes could be a result of the fact that our sequence was very short (274 bp). The mt 12S rRNA gene was not an ideal gene for this study, which should have involved a less conserved section of the mtDNA molecule, like the rapidly evolving D-loop. More genetic work is clearly needed to resolve the phylogenetic relationships within the C. mitis supergroup. However, preliminary genetic data indicate that the southern samangos are distinct from the C. mitis of West Africa, while my morphometric study suggests they may also be distinct from C. albogularis in East Africa. Molecular and karyological studies comparing the genomes of Hogsback “C. a. labiatus” with the neighbouring “C. a. erythrarchus” and Zanzibar C. albogularis would be extremely enlightening.
- Full Text:
- Date Issued: 2013
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