Abstract
Trichilia elegans A. Juss. is a widely distributed species that occurs from Venezuela to Uruguay and constitutes a common component of seasonal forests. Even though the studies on the Pantanal flora started last century, researches on the structure and spatial distribution of tree species are still rare. This work aimed at identifying the pattern of spatial distribution and the diametric distribution of T. elegans and verifying whether there is a correlation between the number of young individuals and the number of adult individuals in a semi-deciduous forest of the Pantanal da Nhecolândia. We sampled 50 plots of 200 m2 each and registered the young and adult individuals in each one of them. To identify the pattern of spatial distribution, we used the Morisita Index (MI) and the variance/mean ratio (R). The linear correlation coefficient was used to verify whether there is a correlation between populations of the juveniles and adults. We found 218 young and 78 adult individuals. Young and adult individuals presented gregarious spatial distribution, and the young ones (MI = 2.32; R = 5.49) were more gregarious than the adults (MI = 1.88; R = 2.05). The linear correlation coefficient found (r = 0.60) demonstrated that the density of young individuals is highly correlated with the density of adult individuals.
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