AVALIAÇÃO DA RIQUEZA E ABUNDÂNCIA DE ESPÉCIES DE MAMÍFEROS DE MÉDIO E GRANDE PORTE EM FRAGMENTOS FLORESTAIS NO MUNICÍPIO DE GOIÂNIA, GOIÁS, BRASIL.

Abstract

The landscape constantly changed, caused mainly by human activities, have affected the size, shape and frequency of the landscape elements, and these fragmentation effects have been some of the major threats to biodiversity and changes in species behavior. This study was made in urban forest fragments in the city of Goiania, Goias with the intention of evaluating the richness, the abundance of the medium and large size mammals relating with the area size and the environment heterogeneity of the fragments. We only used the method of camera trapping (camera trap) to raise the wealth and abundance and we collected points of the vegetation structure along 11 forest fragments in areas between 9,76 and 126,95ha, testing such hypotheses: (1) the larger the forest fragment the larger the record of richness of the species, (2) the larger the forest fragment the larger the species abundance and (3) fragments found in abundance is explained by environmental variables fragments. We obtained 180 records of medium and large size mammals in a total of 20 species, 8 orders and 13 families. The species of greatest occurrence and registration was the coati (Nasua nasua). We recorded a specie classified as vulnerable according to IUCN and MMA, which is the Giant anteater (Myrmecophaga tridactyla) and White-lipped Peccary (Tayassu pecari) appears in the list of IUCN as near threatened. Medium and large size species when it comes to richnes and abundance did not obbey an area, they were found in the smaller area as much as in the larger area. The environmental heterogenety in the fragments also did not explain the abundance found in the areas, reforcing the need and how important is the maintenance and conservation of the Cerrado and of all of the areas sizes, which can serve as the only and temporary source (increasing the connectivity between species).