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

Abstract

RESUMO Structure and Conservation of a Stretch of Seasonal Forest in Pirai-RJ ABSTRACTThis 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.

Flora and Structure of Mata Santa Elisa: an Environmental Patrimony in Campinas, SP

“…Mata Santa Elisa was subject to disturbance factors, including fires, which could have decharacterized its vegetation. Fabaceae, which was the richest and had the second highest IVI, is cited as one of the most important in terms of number of species in other states in the southeast (Bernacci et al, 2006;Medeiros et al, 2016;Pennington et al, 2009). The other families that have been highlighted by their number of species (Meliaceae, Rutaceae, Lauraceae, Euphorbiaceae, Myrtaceae and Malvaceae) or their IVIs (Euphorbiaceae, Lecythidaceae, Malvaceae and Meliaceae) are frequently observed in inventories of semi-deciduous seasonal forest (Oliveira-Filho & Fontes, 2000).…”

Pedoforms Microclimate and Seasonal Forest Structure in Médio Vale do Paraíba

“…They also provide knowledge on species richness and diversity (Felfili et al, 2011). In spite of their applications, most of the phytosociological studies in the region are merely descriptive (Carvalho et al, 2007;Cysneiros et al, 2015;Dan et al, 2010;Ivanauskas et al, 1999;Ivanauskas et al, 2000;Medeiros et al, 2016). Therefore, the influence of environmental variables on the dynamics of ecosystems should be further discussed, especially about the structure and floristic composition of Semideciduous Seasonal Forest arboreal communities.…”

Depois Que O Café Acabou: Biogeografia E História Ambiental De Remanescentes Florestais Do Vale Do Rio Paraíba Do Sul (Rj E Sp)

“…Com o colapso do sistema produtivo, as áreas de lavoura foram gradativamente substituídas por pastagens, condiçãoque agravou os processos erosivos e impediu a resiliência das comunidades florestais na região. "(MEDEIROS et al, 2016) Figura 3.20: Mapa de localização do município de Piraí, no Estado do Rio de Janeiro no Vale do Paraíba do Sul. Fonte IBGE, 2020 O fragmento estudado possui Índice de Circularidade igual a 0,24, sendo, portanto, um fragmento pouco circular, o que torna sua área interna suscetível ao efeito de borda causado pelas adversidades ao redor da floresta (Figura 3.21).…”