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A comparative study of the distribution of C₃ and C₄ species of Cyperaceae in South Africa in relation to climate
In this study the contribution of the climatic factors such as temperature, altitude, and mean annual precipitation as well as phylogeny to the determination of the distribution of C₃ and C₄ genera of Cyperaceae in South Africa has been investigated. Multiple regression analysis was used to determin...
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| Format: | Thesis |
| Language: | English |
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Department of Biological Sciences
2017
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| _version_ | 1867613239547789312 |
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| access_status_str | Open Access |
| author | Chuba, David |
| author2 | Stock, William D |
| author_browse | Chuba, David Stock, William D |
| author_facet | Stock, William D Chuba, David |
| author_sort | Chuba, David |
| collection | Thesis |
| description | In this study the contribution of the climatic factors such as temperature, altitude, and mean annual precipitation as well as phylogeny to the determination of the distribution of C₃ and C₄ genera of Cyperaceae in South Africa has been investigated. Multiple regression analysis was used to determine the climatic factor that best predicted percent C₄ distribution. To see if the C₄ syndrome was influenced by taxonomy, the percentages of C₄ species was determined for each of the subtribes and genera. The results show that the relationship between the climatic factors and percentage of C₄ Cyperaceae species is similar to what has been found for the grasses (Vogel et al., 1978). However C₃ species of Cyperaceae seem to be abundant in most parts of South Africa. Only minimum growing season temperature showed significant correlation (P = 0.000391) with percentage C₄. The presence of the C₄ syndrome is shown to have some consistency within subfamilies, tribes and genera. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/25990 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:32:58.612Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| publisher | Department of Biological Sciences |
| publisherStr | Department of Biological Sciences |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/25990 A comparative study of the distribution of C₃ and C₄ species of Cyperaceae in South Africa in relation to climate Chuba, David Stock, William D Ecophysiology In this study the contribution of the climatic factors such as temperature, altitude, and mean annual precipitation as well as phylogeny to the determination of the distribution of C₃ and C₄ genera of Cyperaceae in South Africa has been investigated. Multiple regression analysis was used to determine the climatic factor that best predicted percent C₄ distribution. To see if the C₄ syndrome was influenced by taxonomy, the percentages of C₄ species was determined for each of the subtribes and genera. The results show that the relationship between the climatic factors and percentage of C₄ Cyperaceae species is similar to what has been found for the grasses (Vogel et al., 1978). However C₃ species of Cyperaceae seem to be abundant in most parts of South Africa. Only minimum growing season temperature showed significant correlation (P = 0.000391) with percentage C₄. The presence of the C₄ syndrome is shown to have some consistency within subfamilies, tribes and genera. 2017-11-01T08:41:34Z 2017-11-01T08:41:34Z 1999 2017-02-14T08:40:01Z Bachelor Thesis Honours BSc (Hons) http://hdl.handle.net/11427/25990 eng application/pdf Department of Biological Sciences Faculty of Science University of Cape Town |
| spellingShingle | Ecophysiology Chuba, David A comparative study of the distribution of C₃ and C₄ species of Cyperaceae in South Africa in relation to climate |
| thesis_degree_str | Bachelor's / Honours |
| title | A comparative study of the distribution of C₃ and C₄ species of Cyperaceae in South Africa in relation to climate |
| title_full | A comparative study of the distribution of C₃ and C₄ species of Cyperaceae in South Africa in relation to climate |
| title_fullStr | A comparative study of the distribution of C₃ and C₄ species of Cyperaceae in South Africa in relation to climate |
| title_full_unstemmed | A comparative study of the distribution of C₃ and C₄ species of Cyperaceae in South Africa in relation to climate |
| title_short | A comparative study of the distribution of C₃ and C₄ species of Cyperaceae in South Africa in relation to climate |
| title_sort | comparative study of the distribution of c₃ and c₄ species of cyperaceae in south africa in relation to climate |
| topic | Ecophysiology |
| url | http://hdl.handle.net/11427/25990 |
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