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A Descriptive analysis of the various sources of portfolio risk on the Namibian Stock Market
We conducted a study on the terrestrial small mammal communities (< 1kg) in the Volcanoes National Park (VNP), Rwanda, to determine species diversity and altitudinal/habitat associations. Data on environmental variables (habitat cover, temperature, wind speed and rainfall) were incorporated into the...
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| Format: | Thesis |
| Language: | English |
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Department of Mathematics and Applied Mathematics
2014
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| _version_ | 1867613598332747776 |
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| access_status_str | Open Access |
| author | Uzera, Nehemia Puuaapo |
| author2 | Bradfield, Dave |
| author_browse | Bradfield, Dave Uzera, Nehemia Puuaapo |
| author_facet | Bradfield, Dave Uzera, Nehemia Puuaapo |
| author_sort | Uzera, Nehemia Puuaapo |
| collection | Thesis |
| description | We conducted a study on the terrestrial small mammal communities (< 1kg) in the Volcanoes National Park (VNP), Rwanda, to determine species diversity and altitudinal/habitat associations. Data on environmental variables (habitat cover, temperature, wind speed and rainfall) were incorporated into the analysis. Both Sherman live and snap traps were set in transects from 30 September to 8 November 2009 at eight habitats (ranging from 2380 m to 3710 m). Trapping over 4800 trap nights resulted in the capture of 305 individuals (including 4 recaptures), of which 247 were identified to species level. These represented eight species of rodents, three species of shrews and one mongoose. Total numbers of small mammals were high in brush ridge and herbaceous habitats, and low in alpine and bamboo habitats. The midaltitude zone housed a high number of small mammals. Of the species captured, Praomys degraaffi is vulnerable and Sylvisorex vulcanorum is near threatened (IUCN 2009); six species (Hylomyscus vulcanorum, Mus bufo, Praomys degraaffi, Sylvisorex vulcanorum, Lophuromys woosnami and Trachyoryctes ruandae) are endemic to the Albertine rift; and four species are new to the Park list. Species richness varied significantly among the different habitat types. Species richness and diversity increased with elevation up to the middle altitudes (2860-3255 m) and then declined with increasing elevation. Endemic species were found mainly in low and middle attitude habitats, and thus, these habitat types are important for conservation of small mammals at VNP. The numbers of known small mammal endemics for VNP will probably be increased if trapping is done seasonally and a more diverse regime of trapping techniques is employed. Key words: Rodentia, Soricidae, endemism, Volcanoes NP, species diversity. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/4939 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:38:41.701Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2014 |
| publishDateRange | 2014 |
| publishDateSort | 2014 |
| publisher | Department of Mathematics and Applied Mathematics |
| publisherStr | Department of Mathematics and Applied Mathematics |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/4939 A Descriptive analysis of the various sources of portfolio risk on the Namibian Stock Market Uzera, Nehemia Puuaapo Bradfield, Dave Mathematical Finance We conducted a study on the terrestrial small mammal communities (< 1kg) in the Volcanoes National Park (VNP), Rwanda, to determine species diversity and altitudinal/habitat associations. Data on environmental variables (habitat cover, temperature, wind speed and rainfall) were incorporated into the analysis. Both Sherman live and snap traps were set in transects from 30 September to 8 November 2009 at eight habitats (ranging from 2380 m to 3710 m). Trapping over 4800 trap nights resulted in the capture of 305 individuals (including 4 recaptures), of which 247 were identified to species level. These represented eight species of rodents, three species of shrews and one mongoose. Total numbers of small mammals were high in brush ridge and herbaceous habitats, and low in alpine and bamboo habitats. The midaltitude zone housed a high number of small mammals. Of the species captured, Praomys degraaffi is vulnerable and Sylvisorex vulcanorum is near threatened (IUCN 2009); six species (Hylomyscus vulcanorum, Mus bufo, Praomys degraaffi, Sylvisorex vulcanorum, Lophuromys woosnami and Trachyoryctes ruandae) are endemic to the Albertine rift; and four species are new to the Park list. Species richness varied significantly among the different habitat types. Species richness and diversity increased with elevation up to the middle altitudes (2860-3255 m) and then declined with increasing elevation. Endemic species were found mainly in low and middle attitude habitats, and thus, these habitat types are important for conservation of small mammals at VNP. The numbers of known small mammal endemics for VNP will probably be increased if trapping is done seasonally and a more diverse regime of trapping techniques is employed. Key words: Rodentia, Soricidae, endemism, Volcanoes NP, species diversity. 2014-07-31T08:11:06Z 2014-07-31T08:11:06Z 2010 Master Thesis Masters MSc http://hdl.handle.net/11427/4939 eng application/pdf Department of Mathematics and Applied Mathematics Faculty of Science University of Cape Town |
| spellingShingle | Mathematical Finance Uzera, Nehemia Puuaapo A Descriptive analysis of the various sources of portfolio risk on the Namibian Stock Market |
| thesis_degree_str | Master's |
| title | A Descriptive analysis of the various sources of portfolio risk on the Namibian Stock Market |
| title_full | A Descriptive analysis of the various sources of portfolio risk on the Namibian Stock Market |
| title_fullStr | A Descriptive analysis of the various sources of portfolio risk on the Namibian Stock Market |
| title_full_unstemmed | A Descriptive analysis of the various sources of portfolio risk on the Namibian Stock Market |
| title_short | A Descriptive analysis of the various sources of portfolio risk on the Namibian Stock Market |
| title_sort | descriptive analysis of the various sources of portfolio risk on the namibian stock market |
| topic | Mathematical Finance |
| url | http://hdl.handle.net/11427/4939 |
| work_keys_str_mv | AT uzeranehemiapuuaapo adescriptiveanalysisofthevarioussourcesofportfolioriskonthenamibianstockmarket AT uzeranehemiapuuaapo descriptiveanalysisofthevarioussourcesofportfolioriskonthenamibianstockmarket |