Banco de sementes do solo de uma área restaurada no município de Jateí, MS

Abstract

The implementation of a forest restoration project, even when it is well planned and executed, does not guarantee that the particular area will have a self-regenerate forest cover and performs ecological functions as expected. This study was developed in a restored area in the municipality of Jateí, MS, an extension of the legal Sitio-Escola reserves, to evaluate and understand the dynamics of the seed bank. Twenty soil samples were taken within the tropical semi-deciduous forest in the restored area. The soil was transported to a nursery, placed in plastic trays, and kept in an incubator with 50% shading at the Federal University of Grande Dourados. After 3 months, the emerging individuals was evaluated. The density of seeds in the soil was 788.75 seeds/m2, and the richness in the soil seed bank in the sample was 590 individuals, distributed in 13 families 25 genera, and 24 species. The species with the highest number of individuals were Gnaphalium spicatum Mill., 217 individuals and Cecropia pachystachya Trécul 103 individuals. It is evident that the potential of the forest to self- regenerate is committed as the composition of the sampled seed bank, requiring immediate interference to restore ecological processes.