Structural aspects and floristic similarity among tropical dry forest fragments with different management histories in northern Minas Gerais, Brazil

Autor: Daniel Meira Arruda, Diego Oliveira Brandão, Fernanda Vieira Costa, Gláucia Soares Tolentino, Reinaldo Duque Brasil, Santos D'Ângelo Neto, Yule Roberta Ferreira Nunes
Jazyk: English<br />Spanish; Castilian<br />Portuguese
Rok vydání: 2011
Předmět:
Zdroj: Revista Árvore, Vol 35, Iss 1, Pp 131-142 (2011)
Druh dokumentu: article
ISSN: 1806-9088
0100-6762
DOI: 10.1590/S0100-67622011000100016
Popis: In order to produce useful knowledge to the initiatives of protection and management of forest fragments, more specifically for tropical dry forests which suffer with frequent anthropic activities, and due to the lack of specific studies, this article aimed describe the structure and the floristic similarity among three areas of dry forest with different management histories. The study was developed in Capitão Enéas municipality, Northern Minas Gerais, Brazil, where three fragments were evaluated, being one in regeneration for 30 years, another submitted to occasional fire and the third with selective cut in small scale. The sampling was developed through the point quarter method considering all the alive phanerophyte individuals with circumference at breast height (CBH) > 15 cm. In the three fragments, 512 individuals, distributed in 60 species, 47 genera, and 23 families were sampled. The most representative families were Fabaceae (26), Anacardiaceae (4), Bignoniaceae (3) and Combretaceae (3). However, fourteen families were represented by only one species. Only eight species were common to all fragments - Myracrodruon urundeuva standed out with 26.9% of all sampled individuals - while a great number of species were exclusive of each fragment. The floristic and structural differences between the fragments are possibly related to the history and intensity of management in each area besides the topography variations and the presence or absence of limestone outcrops. These results show the importance of each fragment, indicating that the loss of anyone would cause negative impacts on the regional flora and consequently to the associated biodiversity.
Databáze: Directory of Open Access Journals
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