Phytosociology of natural regeneration of a Dense Rain Forest in Moreno, Pernambuco, Brazil

Abstract

The study was carried out in the forest fragment Mata da Onça in Moreno, Pernambuco, with the aim to evaluate the phytossociological structure of arboreal regeneration. To obtain data fifteen plots of 1 x 25 m were demarcated, these allocated in plots of 10 x 25 m existing in the fragment. The analyses were performed on individuals with CBH ? 15 cm and H > 1 m, where the heights were divided into three classes: 1) 1.0 ? H ? 2.0 m; 2) 2.0 < H ? 3.0 m and 3) H > 3.0 m. Four hundred and seven individuals were sampled, belonging to 56 species, with a density of 10,853 ind ha^-1. The species of greater value of importance were: Cupania racemosa, Eschweilera ovata, Protium heptaphyllum, Miconia prasina, Siparuna guianensis, Anaxagorea dolichocarpa, Cordia nodosa, Erythroxylum citrifolium, Psychotria cf. carthagenensis and Inga thibaudiana. Species with greater value of total natural regeneration were Protium heptaphyllum, Eschweilera ovata and Cupania racemosa. The species which occurred in the three classes of regeneration have greater potential to be part of the future composition of the forest.