Phytosociologic of a arboreus component of the remanent of Atlantic Forest in the town of Cabo de Santo Agostinho, PE

Abstract

The present study aims to establish a support to the dynamic of arboreous species in a remanescent of Atlantic Forest in Cabo de Santo Agostinho, PE, therefore, contributing to the floristic and phytosociologic knowledge of remanescent Forest of Zona da Mata in Pernambuco. The Ecological Reserve (RESEC) in Gurjaú is located in the rural area Cabo de Santo Agostinho town (08º10’00’’ – 08º15’00’’ S and 35º02’30’’ – 35º05’00’’ W). RESEC’s area is  1.077,10 ha. The vegetation is a Dense Ombrofilous Forest. A total of 40 sample of 250 m² (1 ha) were systematically installed in the area, 25 m apart from one another. All the individual adult with CBH ?  15cm were sampled. The survey led to the identification of 112 arboreous species distributed in 31  botanic families. Moraceae and Myrtaceae were the families with greater number of species. These species produced a diversity index of Shannon and Weaver (H’) of 3,91 nats/individuals. The diametrical distribution showed a pattern typical of inequian, i.e., a curve in the shape of an inverted “J”, which is expected for a secondary forest in initial succession phases. In general the Ecological Reserve in Gurjaú is developing its successional process in an efficient way and efficiently assuring the phytophysionomy for the Dense Ombrofilous Forest in the State of Pernambuco.