Full Text Available
Note: Clicking the button above will open the full text document at the original institutional repository in a new window.
Shade or light? : size class distribution and δ¹³C values as clues to the recruiting environment of Widdringtonia whytei
In order to determine the recruitment environment of the endangered Mulanje Cedar, Widdringtonia whytei, size class distributions were measured for six populations on Mount Mulanje, Malawi. Carbon isotope ratios were also collected from leaf tissue in trees of varying height in order to determine th...
Saved in:
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Thesis |
| Language: | English |
| Published: |
Department of Biological Sciences
2017
|
| Subjects: | |
| Tags: |
No Tags, Be the first to tag this record!
|
| _version_ | 1867613163781881857 |
|---|---|
| access_status_str | Open Access |
| author | Mitrani, Leila Mical |
| author2 | February, Edmund C |
| author_browse | February, Edmund C Mitrani, Leila Mical |
| author_facet | February, Edmund C Mitrani, Leila Mical |
| author_sort | Mitrani, Leila Mical |
| collection | Thesis |
| description | In order to determine the recruitment environment of the endangered Mulanje Cedar, Widdringtonia whytei, size class distributions were measured for six populations on Mount Mulanje, Malawi. Carbon isotope ratios were also collected from leaf tissue in trees of varying height in order to determine the effects of positioning within or below the canopy. Carbon isotope ratios were also taken from wood cores and the δ¹³Cvalues for the innermost and outermost wood were compared for two sites. Size class :frequency distributions had a tendency to be normally distributed but one site showed skewed values towards seedling and another showed a flat distribution, possibly due to continual logging of the trees. Height correlated well with leaf δ¹³Cvalues. Sombani and Bvunje showed the same current (outer wood) δ¹³Cvalues but different recruitment (inner wood) δ¹³Cvalues. Results indicate that Bvunje trees recruited in the shade and Sombani recruited in the sunlight. There is ambiguity in both size class data and carbon isotope data and therefore either Widdringtonia whytei is able to recruit in a variety of manners and environments or other factors are influencing the results. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/26379 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:31:47.142Z |
| 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:11427/26379 Shade or light? : size class distribution and δ¹³C values as clues to the recruiting environment of Widdringtonia whytei Mitrani, Leila Mical February, Edmund C Botany In order to determine the recruitment environment of the endangered Mulanje Cedar, Widdringtonia whytei, size class distributions were measured for six populations on Mount Mulanje, Malawi. Carbon isotope ratios were also collected from leaf tissue in trees of varying height in order to determine the effects of positioning within or below the canopy. Carbon isotope ratios were also taken from wood cores and the δ¹³Cvalues for the innermost and outermost wood were compared for two sites. Size class :frequency distributions had a tendency to be normally distributed but one site showed skewed values towards seedling and another showed a flat distribution, possibly due to continual logging of the trees. Height correlated well with leaf δ¹³Cvalues. Sombani and Bvunje showed the same current (outer wood) δ¹³Cvalues but different recruitment (inner wood) δ¹³Cvalues. Results indicate that Bvunje trees recruited in the shade and Sombani recruited in the sunlight. There is ambiguity in both size class data and carbon isotope data and therefore either Widdringtonia whytei is able to recruit in a variety of manners and environments or other factors are influencing the results. 2017-11-17T08:16:24Z 2017-11-17T08:16:24Z 2010 2017-02-01T13:16:01Z Bachelor Thesis Honours BSc (Hons) http://hdl.handle.net/11427/26379 eng application/pdf Department of Biological Sciences Faculty of Science University of Cape Town |
| spellingShingle | Botany Mitrani, Leila Mical Shade or light? : size class distribution and δ¹³C values as clues to the recruiting environment of Widdringtonia whytei |
| thesis_degree_str | Bachelor's / Honours |
| title | Shade or light? : size class distribution and δ¹³C values as clues to the recruiting environment of Widdringtonia whytei |
| title_full | Shade or light? : size class distribution and δ¹³C values as clues to the recruiting environment of Widdringtonia whytei |
| title_fullStr | Shade or light? : size class distribution and δ¹³C values as clues to the recruiting environment of Widdringtonia whytei |
| title_full_unstemmed | Shade or light? : size class distribution and δ¹³C values as clues to the recruiting environment of Widdringtonia whytei |
| title_short | Shade or light? : size class distribution and δ¹³C values as clues to the recruiting environment of Widdringtonia whytei |
| title_sort | shade or light size class distribution and δ¹³c values as clues to the recruiting environment of widdringtonia whytei |
| topic | Botany |
| url | http://hdl.handle.net/11427/26379 |
| work_keys_str_mv | AT mitranileilamical shadeorlightsizeclassdistributionandd13cvaluesascluestotherecruitingenvironmentofwiddringtoniawhytei |