Diametric distribution of a dystrophic cerradão in Distrito Federal, Brazil

Abstract

This study evaluated the diametric structure of the biological reserve of Cerradão (REBIO do Cerradão), from the analysis of the diametric distributions of the community and its main populations, ordered according to the importance value (IV). The individuals distribution ratio by diametric classes were evaluated by regression and variance analysis. The values of "q" and "R²" indicated that Qualea grandiflora Mart. was the species with the most balanced distribution and greater tendency to equilibrium, and Terminalia fagifolia Mart. the only one that did not show the J-reverse shape. The cerradão seems to be able to recover from random events, but new measurements need to be made to permit more robust conclusions.