Diversidade e composição de besouros longicórneos (Coleoptera: Cerambycidae) em uma floresta estacional decidual

Abstract

Tropical dry forests are increasingly fragmented and converted to pastures and plantations. Once they are abandoned, the tendency is for the vegetation recover to original characteristics, and pass through a process called ecological succession, giving rise to the formation of secondary forests. Cerambycid beetles are strongly linked to the structure of vegetation and are highly influenced by forest quality. Thereby, the purpose of this work is as certain whether diversity (richness, abundance) and composition of cerambycids respond to different types of vegetation (conserved forests vs. secondary forests). The study was carried out at Parque Estadual do Pau Furado (PEPF), in two types of seasonal forest: "conserved forest" with low disturbance, and in "secondary forest", which are areas was suffered of high human pressure and are still in the process of regeneration. To sample the cerambycids, we use the “Luiz de Queiroz” traps, with three traps installed in each type of forest. A total of 388 individuals and 75 morphospecies were found. The accumulation curves did not reach an asymptote, and the richness estimator showed that 75% of the local species were captured. Through of the results, we found the richness and abundance of cerambycids in conserved forests is bigger than secondary forest, however, the species composition is statistical equal between areas. The floristic survey showed that areas of conserved forest had a greater abundance of trees. This work showed the first survey of the Cerambycidae in a dry forest in the Cerrado, and also showed the importance of secondary forests for manutention of this family of insects.