Composição florística e formas de vida em duas comunidades regenerantes em áreas de restauração ecológica de floresta estacional semidecidual

Abstract

Considered one of the 25 global hotspots, the Atlantic Forest has been subjected to anthropic pressure from pressure, making its conservation and restoration indispensable. The present research aims to evaluate natural regeneration and dispersion syndrome in two areas of ecological restoration, located in the municipality of Borborema, state of São Paulo, one for conducting natural regeneration (A01) and the other with conventional seedling plant ( A02) Set up at random, six permanent plots of 4 x 25 meters in each of the areas, totaling 12 permanent plots of 100 m² each. All regenerated individuals with a height (H ≥ 50 cm) and a Diameter Height of the Chest (DBH <15 cm) were sampled. Native cover methods, life form, density, species richness and dispersion syndrome were used. The indexes of diversity, equability and similarity were calculated. In area A01, we sampled 643 isolates, a family with greater specific wealth was Asteraceae, a species and a more abundant life form in V. polyanthes (shrub). In area 02, sampled 369 isolates, a family with greater specific wealth was Asteraceae, a species and life form, respectively, most abundant were S. polyphylla (arboreal). The diversity indices were A01 (H '= 2.61) and A02 (H' = 2.26) and the equation A01 (J '= 0.68) and A02 (J' = 0.62). Similarity was 48% between areas and 8% (A01) and 9% (A02) when compared to tree species between areas. As areas where ecological restoration showed differences in the composition, ways of life and similarity of regenerated communities, however, they meet the legal requirements of the state of São Paulo.

Keyword: Seasonal forest, biodiversity, natural regeneration, seedling planting