Indicadores de qualidade ambiental em áreas de entorno de fragmentos florestais na Bacia do Rio Guapi-Macacu

Abstract

The Atlantic forest fragmentation is still subject little discussed when compared the importance of this biome. The Atlantic forest is considered a priority conservation area, a "hotspot", and studies involving the interaction between the factors there are becoming increasingly important. The litter is an important constituent of the forest ecosystem. There are several factors that can influence the deposition of material, whereby the factors related to the edge effect and its consequences on floristic structure of most relevance. Environmental composition changes that lead to loss of biodiversity, can cause significant changes in the composition of soil microbiota. The intensification of agricultural activities brought as a result the reduction of forest remnants, fragmentation and isolation of landscapes. The purpose of this paper is to look at how the areas with intensive use of soil (UIS) differ from areas with extensive use of soil (UES) as regards the maintenance of forest fragments. The fragments undergo most intense use of your surroundings have a larger landfilling of the leaflitter fraction twigs and reproductive structure those who have submitted most characteristic behavior of the effect of land use surrounding and representing the species of early successional stages in those that predominate in these areas there fragment was also verified that water stress, associated to the effects caused by use of the surrounding soil, spurred the highest density of Amf spores and present species composition of soil fauna characteristic of degraded areas. This type of approach points to an interesting perspective of productive practices on trial its potential for collaboration with the conservation of biodiversity.