Aspectos estruturais da comunidade arbórea em remanescentes de floresta estacional decidual, em Corumbá, MS, Brasil

  • Lima M
  • Damasceno-Júnior G
  • Tanaka M
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Abstract

The structure of the arboreal community of two types of dry forest was compared in an altitudinal gradient of lowland (FEDT B) and submontane (FED SM) dry forests, in Corumbá, MS, Midwest Brazil. Tree species with circumference at breast height ≥ 15 cm were sampled, using the point centered quarter method. In the FEDT B 80 points were demarcated, and in FED SM 78 points were distributed in the following altitudes: 180 m (18 points), 220, 260 and 300 m (20 points each). In FEDT B 34 species were sampled; Calycophyllum multiflorum Griseb., Ceiba pubiflora (A. St.-Hil.) K. Schum. and Anadenanthera colubrina (Vell.) Brenan have the highest VI values. In FED SM, 33 species were sampled, and Anandenanthera colubrina, Ceiba pubiflora and Acosmium cardenasii H. S. Irwin & Arroyo were the most important. The distribution pattern of the species varied along the altitudinal gradient. In both forests Shannon’s diversity and equitability indexes were 2.9 and 0.8, respectively, and the most representative families were Fabaceae (8 species) and Rubiaceae (4 species). The studied forests have low density of individuals in relation to other studies, except for the track at 300 m. About 22.46% of the individuals of arboreal community had basal ramifications and were in the initial phases of succession. The canopy varied from 6 to 12 m, and emergent individuals of up to 18 m. These remnants represent a source of biodiversity for the Pantanal, being an important part of the natural forest corridors of the region.

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Lima, M. S. de, Damasceno-Júnior, G. A., & Tanaka, M. O. (2010). Aspectos estruturais da comunidade arbórea em remanescentes de floresta estacional decidual, em Corumbá, MS, Brasil. Revista Brasileira de Botânica, 33(3), 437–453. https://doi.org/10.1590/s0100-84042010000300007

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