Estudos botânicos em áreas de capoeira da região Bragantina-Pa

Abstract

In order to seek alternatives for the use of capoeira species (timber and non-wood species) is being developed the project: Sustainable Management of Secondary Forests on Rural Properties in the Micro-Region Bragantina which is part of this work. As part of the comparative studies of the floristic composition of "capoeiras" of different ages and with the same history of use, a vegetation survey was carried out in an agricultural area where traditional agriculture typical of the region is practiced. The area is located 20 km from the city of Bragança-PA; three capoeiras of different ages were systematically inventoried. In plots of 10mx10m all trees with DBH greater than 10cm were measured. In 5mX5m sub-plots, individuals with height greater than 1.5m and DBH less than 10cm were inventoried; and in smaller sub-plots, of 2mx2m, all seedlings with height between 30cm and 1.50m were counted. Preliminary results indicate a floristic composition of 73 species distributed among 62 genera and 30 families. The most species-rich family was Leguminosae "latu senso". Future more detailed analyses of the data will test the hypothesis that stands of different ages have diverse structure and floristic composition and that secondary vegetation from 10-12 years of age already have some potential for utilization and can provide alternative sources of income for small farmers.