Variation in Crown Light Utilization Characteristics among Tropical Canopy Trees
| Autor: | S. Joseph Wright, Stephen S. Mulkey, Kaoru Kitajima |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Canopy
Tropical Climate Structure and Function of Plant Canopies Tree canopy Time Factors Pioneer species biology Panama Plant Science biology.organism_classification Adaptation Physiological Photosynthetic capacity Trees Plant Leaves Horticulture Cecropia longipes Shoot Botany Sunlight Dominance (ecology) Photosynthesis Leaf area index |
| Zdroj: | Annals of Botany. 95:535-547 |
| ISSN: | 1095-8290 0305-7364 |
| DOI: | 10.1093/aob/mci051 |
| Popis: | Background and Aims Light extinction through crowns of canopy trees determines light availability at lower levels within forests. The goal of this paper is the exploration of foliage distribution and light extinction in crowns of five canopy tree species in relation to their shoot architecture, leaf traits (mean leaf angle, life span, photosynthetic characteristics) and successional status (from pioneers to persistent). Methods Light extinction was examined at three hierarchical levels of foliage organization, the whole crown, the outermost canopy and the individual shoots, in a tropical moist forest with direct canopy access with a tower crane. Photon flux density and cumulative leaf area index (LAI) were measured at intervals of 025‐1 m along multiple verticaltransectsthroughthreetofivematuretreecrownsofeachspeciestoestimatelightextinctioncoefficients(K). Results Cecropia longipes, a pioneer species with the shortest leaf life span, had crown LAI |
| Databáze: | OpenAIRE |
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