Josival Santos Souza

Flutuações temporais nos padrões de distribuição diamétrica da comunidade arbóreo-arbustivo e de 15 populações em um fragmento florestal

Aiming to characterize possible fluctuations in the patterns of diametric distribution, the community and the populations of the 15 most abundant tree species in a fragment of semideciduous forest were analyzed in a five year interval (2000-2005). The diametric distribution of the community showed a high concentration in the smaller classes and accentuated reduction in the biggest classes (reverse-J-shape), for both surveys. The populations presented different patterns, randomly distributed in two groups. Group1, formed by species of smaller diameters and abundant in the sub-canopy, such as Galipea jasminiflora, Allophylus edulis, Sebastiania commersoniana, Dendropanax cuneatus and Mollinedia widgrenii, and also by pioneer species of high trees, Acacia polyphylla and Piptadenia gonoacantha followed the reverse-J-shape curve diametric distributions . All species of Group2 (Platycyamus regnellii, Cupania vernalis, Machaerium stipitatum, Machaerium villosum,