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- Title
Floristics, structure and diversity of tree communities of two Gallery Forests in the Federal District, Brazil.
- Authors
Martins Silveira, Irving; Coelho de Souza, Fernanda; Flores Haidar, Ricardo; Vieira Brandão, Miguel Marinho; de Almeida Salles, Leandro; Durães Froes, Marcos Gabriel; Arcela, Vicente; Rezende, Alba Valéria
- Abstract
Gallery Forests are narrow strips of tropical forests that occur along water courses. This vegetation type is common in Central Brazil and is extremely relevant for the biodiversity conservation, maintenance of ecological processes and water regulation. Therefore, the aim of this study was to evaluate the woody vegetation in two gallery forests in the Federal District, called Ribeirão gallery forest (RGF) and Pitoco gallery forest (PGF). Fifty plots of 10 m x 10 m were sampled in each forest, and all trees with DBH ≥ 5 cm were measured. In each forest, we conducted analysis on phytosociological parameters, diameter and height distributions, and diversity indexes. We registered 1,571 woody individuals, belonging to 150 species, among which, 94 were recorded in the forest of Ribeirão (RGF) and 96 in the forest of Pitoco (PGF). Although only 40 species (26.7%) occurred in both forests, the Chao-Sorensen similarity index was 0.478, showing the high Beta diversity within these formations. The species richness of the two forests is above the average observed in other gallery forests in Brazil, with Shannon diversity index (H') equal to 3.86 for RGF and 3.96 for PGF, and the Pielou evenness index (J') equal to 0.85 and 0.87, respectively. The diametric distribution of both forests showed the reverse J-shaped pattern, suggesting communities with satisfactory regeneration. Floristic and structural distinctions both between and within forests, alongside the observed high richness, indicate great biological heterogeneity, in response to the different environmental conditions. This underscores the importance of maintaining ecological corridors to facilitate gene flow and species dispersal among different gallery forests.
- Subjects
CORRIDORS (Ecology); RIPARIAN areas; RIPARIAN ecology; TROPICAL forests; GENE flow
- Publication
Ciência Florestal (01039954), 2024, Vol 34, Issue 2, p1
- ISSN
0103-9954
- Publication type
Article
- DOI
10.5902/1980509847958