Estrutura e Conservação de um Trecho de Floresta Estacional em Piraí, RJ

This study aimed the floristic and structural characterization of a stretch of seasonal forest in the Municipality of Pirai, State of Rio de Janeiro, in order to determine its successional stage. The Parque Municipal da Mata do Amador has an area of 16.4 ha (22o37'S and 43o53'W), where 15 plots of 10 × 10 meters were installed. Plants with DAP ≥ 5cm were measured, which totalized 176 specimens, encompassing 24 families, 46 genera and 51 species. The richest family was Fabaceae. The most abundant genera were Cupania L., Casearia Jacq and Eugenia L. The species with the highest importance value was Sorocea bonplandii. It was demonstrated tha the Mata do Amador has considerable species diversity (H '= 3.517 natsind-1) and high equability (J' = 0.884), classified as a secondary forest stretch in a intermediate stage of regeneration.