Phyrosociological and edaphic characteristics of a mangrove forest in São Sebastião – SP Rubia Grazielle Valadares, Júlia Tosoni, João Marcos Miragaia Schmiegelow

Abstract

The mangrove ecosystem is found in coastal areas, subject to tidal action in tropical and subtropical zones, being considered a transitional environment between the ocean and the continent. It has great ecological and strategic importance and, given this, it is necessary to obtain information for adequate environmental management with a view to a possible expansion of the port of São Sebastião. Therefore, the present work aims to relate the characteristics of the soil with the structure in a mangrove forest through the evaluation of six plots, distributed in two transects perpendicular to the water line, following the environmental gradient. The edaphic characterization of the forest was carried out based on the following parameters: interstitial salinity, granulometry, degree of compaction and topography. To analyze the structure, measurements of height and perimeter at breast height (PAP) were taken, density was estimated and the basal area was calculated. Pearson's correlation showed a positive correlation between tree density and the degree of soil compaction, while the other parameters analyzed for edaphic characterization were not related to the structure of the vegetation.