Composição da vegetação arbórea associada à população nativa de Bertholletia excelsa bonpl, em Itaúba-MT

Abstract

The Amazon rainforest is the biome with the highest biodiversity in the world, has a large amount of available natural resources. Between different plant species with Amazon exploration potential, the "Bertholletia excelsa" emerges as an important species in the pursuit of sustainable development of the Amazon forest. The objective was to characterize the floristic richness, diversity and structure of species associated with the species "Bertholletia excelsa" in the city of Itaúba-MT, using circular plots and check, that the floristic similarity is higher in individuals of the same class productivity. The total density for the area sampled was 526 individuals per hectare have been recorded 96 species of 61 genus belonging to 34 botanical families among which the Fabaceae family stand out as the richest with 14 species. The specie that stood out with the highest importance value (VI) in the community was Pseudolmedia laevis. Most individuals is in the lower diameter classes (10 to 20 cm) and the vertical structure showed the formation of three layers of the population with an average height of 18.25 meters. The diversity index (H ') of the area was 3.53 and the evenness (J) 0.77, high values for the region of Mato Grosso Amazon. The similarity between the sampling units was low for the total population, and had increased without the locally rare species. There was no major similarities between portions of the same productivity class, showing that this variable has no correlation with the species composition associated with Bertholletia excelsa.