Sex ratios, damage and distribution of Myrianthus holstii Engl.: a dioecious afromontane forest tree
Male and female dioecious tropical trees are subjected to distinct demands that may influence their ecology. An example is Myrianthus holstii Engl. that produces persistent fruit eaten by elephants and other large mammals that frequently damage the trees. Myrianthus holstii populations were assessed...
| Main Authors: | , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Cambridge University Press
2023
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/131097 |
| _version_ | 1855525159351353344 |
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| author | Kissa, D.O. Ssali, F. Sheil, D. |
| author_browse | Kissa, D.O. Sheil, D. Ssali, F. |
| author_facet | Kissa, D.O. Ssali, F. Sheil, D. |
| author_sort | Kissa, D.O. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Male and female dioecious tropical trees are subjected to distinct demands that may influence their ecology. An example is Myrianthus holstii Engl. that produces persistent fruit eaten by elephants and other large mammals that frequently damage the trees. Myrianthus holstii populations were assessed with 24 2-km transects, spanning an elevation range of 1435–2495 m in the Bwindi Impenetrable National Park in Uganda. Of 1089 stems ≥ 5 cm diameter 449 were female, 383 were male and the rest were non-fertile. We also noted one apparently monoecious individual. Males produced flowers at smaller sizes than did females (minimum recorded diameters 5.5 cm and 6.8 cm, respectively). Both sexes had similar distributions, favouring moderately closed forest and mid-slope locations. Female trees were more frequently damaged and typically slightly shorter than males at large diameters. Seedling densities were positively associated with the presence of larger female trees. Our results are consistent with a life history where both sexes have similar requirements, but fruiting females experience a greater frequency of severe damage. |
| format | Journal Article |
| id | CGSpace131097 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2023 |
| publishDateRange | 2023 |
| publishDateSort | 2023 |
| publisher | Cambridge University Press |
| publisherStr | Cambridge University Press |
| record_format | dspace |
| spelling | CGSpace1310972025-10-26T12:52:17Z Sex ratios, damage and distribution of Myrianthus holstii Engl.: a dioecious afromontane forest tree Kissa, D.O. Ssali, F. Sheil, D. tropical forests sex ratio Male and female dioecious tropical trees are subjected to distinct demands that may influence their ecology. An example is Myrianthus holstii Engl. that produces persistent fruit eaten by elephants and other large mammals that frequently damage the trees. Myrianthus holstii populations were assessed with 24 2-km transects, spanning an elevation range of 1435–2495 m in the Bwindi Impenetrable National Park in Uganda. Of 1089 stems ≥ 5 cm diameter 449 were female, 383 were male and the rest were non-fertile. We also noted one apparently monoecious individual. Males produced flowers at smaller sizes than did females (minimum recorded diameters 5.5 cm and 6.8 cm, respectively). Both sexes had similar distributions, favouring moderately closed forest and mid-slope locations. Female trees were more frequently damaged and typically slightly shorter than males at large diameters. Seedling densities were positively associated with the presence of larger female trees. Our results are consistent with a life history where both sexes have similar requirements, but fruiting females experience a greater frequency of severe damage. 2023 2023-07-12T06:12:32Z 2023-07-12T06:12:32Z Journal Article https://hdl.handle.net/10568/131097 en Open Access Cambridge University Press Kissa, D.O., Ssali, F. and Sheil, D. (2023) Sex ratios, damage and distribution of Myrianthus holstii Engl.: a dioecious afromontane forest tree. Journal of Tropical Ecology, 39, e11. doi: 10.1017/S0266467422000499 |
| spellingShingle | tropical forests sex ratio Kissa, D.O. Ssali, F. Sheil, D. Sex ratios, damage and distribution of Myrianthus holstii Engl.: a dioecious afromontane forest tree |
| title | Sex ratios, damage and distribution of Myrianthus holstii Engl.: a dioecious afromontane forest tree |
| title_full | Sex ratios, damage and distribution of Myrianthus holstii Engl.: a dioecious afromontane forest tree |
| title_fullStr | Sex ratios, damage and distribution of Myrianthus holstii Engl.: a dioecious afromontane forest tree |
| title_full_unstemmed | Sex ratios, damage and distribution of Myrianthus holstii Engl.: a dioecious afromontane forest tree |
| title_short | Sex ratios, damage and distribution of Myrianthus holstii Engl.: a dioecious afromontane forest tree |
| title_sort | sex ratios damage and distribution of myrianthus holstii engl a dioecious afromontane forest tree |
| topic | tropical forests sex ratio |
| url | https://hdl.handle.net/10568/131097 |
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