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| Author(s): |
Kaila de Assis Ressel Pereira
Total Authors: 1
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| Document type: | Doctoral Thesis |
| Press: | Rio Claro. 2022-05-04. |
| Institution: | Universidade Estadual Paulista (Unesp). Instituto de Biociências. Rio Claro |
| Defense date: | 2004-11-08 |
| Advisor: | Adelita Aparecida Sartori Paoli |
| Abstract | |
The study was carried out in two units of Atlantic forest conservation, in the State Park of Serra do Mar, Núcleo de Picinguaba and Núcleo de Santa Virgínia, and in the State Park of Intervales, Base de Saibadela. Eighthy three tree species had their seedlings morphologicaly described and classified. The first chapter comprised a study of the seedlings functional morphology and ecology, based on cotyledons characteristics, position, texture and exhibition. This study intended (a) to verify if all the studied species would fit in the functional morphology classification system and (b) to verify if seedling morphology would have any relation with some ecological traits, such as, successional group, type of dispersal, seed weight, seedling formation time, root/stem biomass allocation, and relative growth rates. The species were divided into five categories, 42 species of the phanero-epigeal-foliaceous type (PEF), 8 phanero-epigeal-fleshy type (PER), 5 phanero-hypogeal-fleshy type (PHR), 26 cryptohypogeal-fleshy type (CHR) and two species of the crypto-epigeal-fleshy type (CER). The classification used was effective, representing all the studied species. There were no significant relationships between functional morphology groups and type of dispersal. On the other hand, interesting and significant relationships were found between successional groups, seed weight, and seedling formation time with seedling functional morphology categories. The results demonstrate that morphology has, at least in early stages, a determinant role in the processes of tree seedlings establishment and development. In the second chapter, a manual of seedlings identification was made, accompanied of identification keys and photographic illustrations. (AU) | |