Diversidade de aranhas em gradientes da estrutura do habitat e da paisagem em remanescentes florestais

Abstract

In this dissertation, we will show that the spider community responds more strongly to local than regional variations in this landscape dominated by agrarian activity. For this we sample spiders with two distinct and complementary methods within eight forest fragments. Foliage beating were carried out during the mornings for the capture of spiders in the arboreal foliage (a component of the forest habitat) and active nocturnal search for the capture of spiders on all forest substrates from the ground up to about two meters high. The difference between these methods, on patterns of the community structure, suggest greater spider diversity in heterogeneous habitats because to the effect of habitat size (more habitat, more individuals, more species) rather than niche heterogeneity (more diverse habitat, greater diversity of conditions and resources, more species).