Photosynthesis and successional status of seedlings in a tropical semideciduous rain forest in Nigeria
(1) This study tests the hypothesis that photosynthetic performance of seedlings in a tropical forest depends on the successional status of the species. According to this hypothesis, pioneers display an enhanced capacity to utilize the high photon flux density associated with a gap. (2) Data were co...
| Autores principales: | , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
JSTOR
1991
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/101710 |
| _version_ | 1855521840738336768 |
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| author | Riddoch, I. Grace, J. Fasehun, F.E. Riddoch, B. Ladipo, D.O. |
| author_browse | Fasehun, F.E. Grace, J. Ladipo, D.O. Riddoch, B. Riddoch, I. |
| author_facet | Riddoch, I. Grace, J. Fasehun, F.E. Riddoch, B. Ladipo, D.O. |
| author_sort | Riddoch, I. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | (1) This study tests the hypothesis that photosynthetic performance of seedlings in a tropical forest depends on the successional status of the species. According to this hypothesis, pioneers display an enhanced capacity to utilize the high photon flux density associated with a gap. (2) Data were collected from nine species representing three ecological groupings: weeds of gaps, pioneer trees and climax trees. Pioneer trees had photosynthetic attributes similar to weeds. Compared to climax trees, both groups had higher stomatal conductances, higher light compensation points, higher rates of dark respiration, much higher mesophyll conductances, and often higher quantum efficiencies. (3) In a fluctuating light regime, there was no support for the hypothesis that species growing in shade show rapid stomatal responses to sunflecks, all species showed fluctuating rates of photosynthesis with little or no adjustment of stomata during the 20-min test. |
| format | Journal Article |
| id | CGSpace101710 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1991 |
| publishDateRange | 1991 |
| publishDateSort | 1991 |
| publisher | JSTOR |
| publisherStr | JSTOR |
| record_format | dspace |
| spelling | CGSpace1017102024-05-15T05:11:31Z Photosynthesis and successional status of seedlings in a tropical semideciduous rain forest in Nigeria Riddoch, I. Grace, J. Fasehun, F.E. Riddoch, B. Ladipo, D.O. seedlings tropical forests weeds trees photosynthesis (1) This study tests the hypothesis that photosynthetic performance of seedlings in a tropical forest depends on the successional status of the species. According to this hypothesis, pioneers display an enhanced capacity to utilize the high photon flux density associated with a gap. (2) Data were collected from nine species representing three ecological groupings: weeds of gaps, pioneer trees and climax trees. Pioneer trees had photosynthetic attributes similar to weeds. Compared to climax trees, both groups had higher stomatal conductances, higher light compensation points, higher rates of dark respiration, much higher mesophyll conductances, and often higher quantum efficiencies. (3) In a fluctuating light regime, there was no support for the hypothesis that species growing in shade show rapid stomatal responses to sunflecks, all species showed fluctuating rates of photosynthesis with little or no adjustment of stomata during the 20-min test. 1991-06 2019-06-25T17:09:00Z 2019-06-25T17:09:00Z Journal Article https://hdl.handle.net/10568/101710 en Limited Access JSTOR Riddoch, I., Gracr, J., Fasehun, F.E., Riddoch, B. & Ladipo, D.O. (1991). Photosynthesis and successional status of seedlings in a tropical semi-deciduous rain forest in Nigeria. Journal of Ecology, 79, 491-503. |
| spellingShingle | seedlings tropical forests weeds trees photosynthesis Riddoch, I. Grace, J. Fasehun, F.E. Riddoch, B. Ladipo, D.O. Photosynthesis and successional status of seedlings in a tropical semideciduous rain forest in Nigeria |
| title | Photosynthesis and successional status of seedlings in a tropical semideciduous rain forest in Nigeria |
| title_full | Photosynthesis and successional status of seedlings in a tropical semideciduous rain forest in Nigeria |
| title_fullStr | Photosynthesis and successional status of seedlings in a tropical semideciduous rain forest in Nigeria |
| title_full_unstemmed | Photosynthesis and successional status of seedlings in a tropical semideciduous rain forest in Nigeria |
| title_short | Photosynthesis and successional status of seedlings in a tropical semideciduous rain forest in Nigeria |
| title_sort | photosynthesis and successional status of seedlings in a tropical semideciduous rain forest in nigeria |
| topic | seedlings tropical forests weeds trees photosynthesis |
| url | https://hdl.handle.net/10568/101710 |
| work_keys_str_mv | AT riddochi photosynthesisandsuccessionalstatusofseedlingsinatropicalsemideciduousrainforestinnigeria AT gracej photosynthesisandsuccessionalstatusofseedlingsinatropicalsemideciduousrainforestinnigeria AT fasehunfe photosynthesisandsuccessionalstatusofseedlingsinatropicalsemideciduousrainforestinnigeria AT riddochb photosynthesisandsuccessionalstatusofseedlingsinatropicalsemideciduousrainforestinnigeria AT ladipodo photosynthesisandsuccessionalstatusofseedlingsinatropicalsemideciduousrainforestinnigeria |