Estudo fitossociológico de um trecho da floresta estacional semidecidual em Diamante do Norte, Estado do Paraná, Brasil

Abstract

Phytosociology in semi-deciduous seasonal forest fragment in Diamate do Norte, State of Paraná, Brazil. The aim of this work was to study a Semideciduous Seasonal Forest fragment. It was carried out at the Ecological Station Caiu・(54ｰ 49’W and 22ｰ 34'S), in Diamante do Norte, Paran・State, Brazil. The study covered an area of 1.426 ha. The plots were located by GPS in that fragment. The area was divided in 29 parcels with 50 x 30 m, totalizing 4.35 ha. The individuals belonging to regeneration and the ones with DBH higher than or equal to 5.0 cm were then measured, totalizing 3,812 adult individuals, gathered into 38 families, 85 genera and 102 species. The families with the highest number of species were Myrtaceae, Rutaceae and Leguminosaea groups. Xylosma venosa, Metrodorea nigra, Chrysophyllum gonocarpum, Plinia rivularis, Eugenia uniflora, Aspidosperma polyneuron, Actinostenon concolor, Zygia cauliflora, Caesaria gossypiosperma, Blepharocalyx salicifolius, Astronium graveolens, Campomanesia xanthocarpa and Balfourodendron riedelianum stood out as the ones with higher importance levels. Shannon diversity index (H’) was 3.56 and the Sorensen similarity index was 75.5%.