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Functional traits of tree species in a fragment of Araucaria Forest in Lages, Santa Catarina state/Atributos funcionais de especies arboreas em um fragmento de floresta ombrofila mista em lages--SC
This study aimed to describe the functional traits of tree species in an Araucaria Forest fragment, in the municipality of Lages, SC state, in order to group them functionally. For each of the 20 most abundant species in the study area, a total of 10 individuals were sampled for the determination of...
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Published in: | Ciência florestal 2017-01, Vol.27 (1), p.215 |
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Main Authors: | , , , , , , , , , , , |
Format: | Article |
Language: | Spanish |
Online Access: | Get full text |
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Summary: | This study aimed to describe the functional traits of tree species in an Araucaria Forest fragment, in the municipality of Lages, SC state, in order to group them functionally. For each of the 20 most abundant species in the study area, a total of 10 individuals were sampled for the determination of the mean wood density and mean leaf size. The leaf renovation regimes, the dispersal syndrome and the maximum height in the fragment were also described for these species. The results of maximum height and wood density suggest the existence of a trade-off between investment of resources in height growth, ensuring access to some higher light availability, or in wood density, allowing for greater resilience and survival in a shaded understory environment. The gymnosperm species, Podocarpus lambertii and Araucaria angustifolia showed smaller leaves, while Cupania vernalis, Jacaranda puberula and Matayba elaeagnoides, all of compound leaves, had larger ones. Four functional groups stood out: 1) Evergreen with large leaves, 2) Evergreen with small leaves, 3) Deciduous with zoochoric syndrome, and 4) Deciduous with non-zoochoric syndrome. The results showed that the most abundant species of the studied Araucaria Forest fragment present functional trait variations, suggesting different life strategies. Keywords: Tree species community; ecological strategies; resource allocation. O presente estudo teve como objetivo descrever atributos funcionais de especies arboreas em um fragmento de Floresta Ombrofila Mista em Lages - SC, com o proposito de agrupa-las funcionalmente. Para cada uma das 20 especies mais abundantes na area de estudo foi amostrado um total de 10 individuos e determinada a media da densidade da madeira e o tamanho medio das folhas. Dessas especies, tambem foi descrito o regime de renovacao foliar, a sindrome de dispersao de propagulos e a altura maxima no fragmento. Os resultados de altura maxima e de densidade da madeira sugerem a existencia de um trade-off entre o investimento de recursos para o crescimento em altura, garantindo o acesso a maior disponibilidade luminica, ou em densidade da madeira, permitindo maior capacidade de resistencia e sobrevivencia em um ambiente sombreado de sub-bosque. As gimnospermas Araucaria angustifolia e Podocarpus lambertii apresentaram as folhas de menor tamanho, enquanto Cupania vernalis, Jacaranda puberula e Matayba elaeagnoides, todas de folhas compostas, apresentam as maiores folhas. Quatro grupos funcionais se des |
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ISSN: | 1980-5098 |