Tree community structure in a seasonally dry tropical forest remnant, Brazil

CERNE

Deborah Mattos Guimarães Apgaua²  Polyanne Aparecida Coelho²  Rubens Manoel Dos Santos²  Paola Ferreira Santos²  Ary Teixeira De Oliveira-filho¹ 

[1] ,Universidade Federal de LavrasLavras Minas Gerais ,Brazil

关键词: diameter distribution;    Caatinga;    phytosociology;    conservation;    distribuição diamétrica;    Caatinga;    fitossociologia;    conservação;   

DOI  :  10.1590/01047760.201420021540

来源: SciELO

【 摘 要 】

Most studies on Seasonally Dry Tropical Forests (SDTFs) investigate phytogeographic patterns and floristic connections of this disjunct biome. However, little is known about the structural characteristics of SDTFs. We aimed to describe the structure of a SDTF in an ecotonal area between the Cerrado and Caatinga domains. In total, 79 tree species were recorded, and high values of Shannon diversity index (3.6 nats/individual) and equability (0.83) were observed. The diameter distribution for the species with higher cover values and for the entire community did not exhibit a reverse-J shaped distribution, which indicates the occurrence of different growth strategies and ecological adaptations to water stress. The results did not indicate the formation of floristic groups, as the high soil fertility in the study area results in a homogeneous environment. The structural characteristics of the study area associated with the soil composition highlight its importance for conservation and emphasize the need for community structure studies in SDTFs.

【 授权许可】

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