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| Format: | Artículo científico |
| Language: | en |
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Universidade Federal de Viçosa
2009
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| Online Access: | https://www.redalyc.org/articulo.oa?id=48815855014 |
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Table of Contents:
- Tree structure and richness in an Atlantic Forest fragment: distance from anthropogenic and natural edges Maíra Taquiguthi Ribeiro Flavio Nunes Ramos Flavio Antonio Maës Dos Santos Agrociencias Natural edge Forest fragmentation Vegetation structure Approximately 7.2% of the Atlantic rainforest remains in Brazil, with only 16% of this forest remaining in the State of Rio de Janeiro, all of it distributed in fragments. This forest fragmentation can produce biotic and abiotic differences between edges and the fragment interior. In this study, we compared the structure and richness of tree communities in three habitats - an anthropogenic edge (AE), a natural edge (NE) and the fragment interior (FI) - of a fragment of Atlantic forest in the State of Rio de Janeiro, Brazil (22°50'S and 42°28'W). One thousand and seventy-six trees with a diameter at breast height > 4.8 cm, belonging to 132 morphospecies and 39 families, were sampled in a total study area of 0.75 ha. NE had the greatest basal area and the trees in this habitat had the greatest diameter:height allometric coefficient, whereas AE had a lower richness and greater variation in the height of the first tree branch. Tree density, diameter, height and the proportion of standing dead trees did not differ among the habitats. There was marked heterogeneity among replicates within each habitat. These results indicate that the forest interior and the fragment edges (natural or anthropogenic) do not differ markedly considering the studied parameters. Other factors, such as the age from the edge, type of matrix and proximity of gaps, may play a more important role in plant community structure than the proximity from edges. 2009 artículo científico 0100-6762 https://www.redalyc.org/articulo.oa?id=48815855014 en http://www.redalyc.org/revista.oa?id=488 Revista Árvore application/pdf Universidade Federal de Viçosa Revista Árvore (Brasil) Num.6 Vol.33