COMPOSIÇÃO FLORÍSTICA E CARACTERIZAÇÃO SUCESSIONAL COMO SUBSÍDIO PARA CONSERVAÇÃO E MANEJO DO PNMCBio, SOROCABA - SP

Abstract

RESUMOO trabalho foi realizado no Parque Natural Municipal Corredores da Biodiversidade (PNMCBio), em Sorocaba -SP, com o objetivo de avaliar a composição florística do componente arbóreo e o estágio sucessional de uma área de floresta nativa de aproximadamente 31 hectares. Para tanto, foram alocadas 64 parcelas de tamanho 10 x 10 m, distribuídas aleatoriamente na área, sendo coletados todos os indivíduos com CAP igual ou maior que 15 cm. Estimou-se a diversidade por meio do índice de diversidade de Shannon (H') e a equabilidade por meio do índice de Pielou (J'). As espécies foram caracterizadas nos grupos sucessionais, síndrome de dispersão, categorias de ameaça, amplitude de distribuição e indicadoras do estágio de regeneração. Foram amostrados 1088 indivíduos, distribuídos em 79 espécies, 54 gêneros e 29 famílias, sendo o H' estimado em 3,421 e o J' em 0,78, valores próximos aos encontrados em outras áreas de formações vegetacionais similares. Foram identificadas quatro espécies ameaçadas de extinção, 11 espécies endêmicas da Mata Atlântica e duas espécies restritas à Floresta Estacional Semidecidual no domínio da Mata Atlântica. O fragmento encontra-se em estágio médio de regeneração, sendo de suma importância sua conservação e manejo para a manutenção da biodiversidade local e regional. Palavras-chave: Floresta Estacional Semidecidual; estágio sucessional; manejo. ABSTRACTThe study was conducted at the Natural Municipal Park "Corredores da Biodiversidade" (PNMCBio) in Sorocaba-SP, with the aim to evaluate the floristic composition of the tree component and the successional stage of a forest with about 31 hectares. Thereunto, were allocated 64 plots of 10 x 10 meters randomly distributed in the area. All individuals with CBH (circumference at the breast height) equal to or greater than 15 cm were included. We estimatedthe diversity through the Shannon diversity index (H') and evenness through the Pielou index (J'). The species were characterized in successional groups, dispersal syndromes, categories of threat, distributional range and indicator of the regeneration stage. We sampled 1088 individuals distributed into 79 species, 54 genera and 29 families. The H' was estimated in 3,421 and the J' in 0.78, values close to those found in other areas of similar vegetation formations. We sampled four endangered species, 11 Atlantic Forest endemic species and two species restricted to Seasonal Semideciduous Forest in the Atlantic Forest domain. The fragment is in an intermediate stage of succession, being of paramount importance to conservation and management for the maintenance of local and regional biodiversity.

Soil Seed Banks in a Forest Under Restoration and in a Reference Ecosystem in Southeastern Brazil

“…Thus, forests undergoing restoration process should naturally experience seed and seedling bank enrichment over time, since this forest type is attractive to seed dispersing fauna. The large number of zoochorous species assessed in Forest 2 flora helps conserving the fauna associated with the phytophysiognomy (Coelho et al, 2016) investigated in the present study. Moreover, Forest 2 houses key species for the restoration of degraded areas, such as Euterpe edulis Mart.…”

Floristic and ecological attributes of a Seasonal Semideciduous Atlantic Forest in a key area for conservation of the Zona da Mata region of Minas Gerais State, Brazil

“…Our data thus yielded results above those marks. In comparison with studies performed in other seasonal semideciduous forest remnants that used similar sampling methods (e.g., Silva et al 2004, Marangon et al 2007, Leite & Rodrigues 2008, Dias-Neto et al 2009, Braga et al 2011, Santos et al 2013, Coelho et al 2016, the values of richness, diversity, and evenness found at Santa Rita Farm were also higher. The high values of those indexes found in our study provide evidence of the ecological importance of the studied fragment, which is located between two important Protected Areas (PAs) of the Atlantic Forest, namely the Parque Estadual da Serra do Brigadeiro and the Parque Nacional do Caparaó.…”

Is Biotic Integrity of Urban Forests Remants Related With Their Size and Shape?

“…BII contains eleven indicators (or ecological variables) and the selection of these indicators was based on literature review, most previous studies (Medeiros and Torezan, 2013;Gregorini, 2015;Graciano-Silva, 2016), with adaptations for species (Indicators 10, 11) using previous studies as Konthetkoff-Henriques (2003) to Ribeirão Preto, and Albuquerque and Rodrigues (2000) and Coelho et al (2016) to Sorocaba. Table 1 shows these indicators and the possible value variation.…”