Abstract
Abstract The distribution of lianas (woody climbing plants) on trees in a lowland “liana forest” of northeastern Bolivia was clumped and varied with characteristics of individual trees and tree neighbors. In twenty-four 900-m2 square plots established to estimate tree (≥10 cm DBH [diameter at breast height]) and liana (≥2 cm DBH) densities and to count the number of lianas a tree carried, we estimated a mean of 65 tree species and 51 liana species per hectare. Mean tree density at the study site (564 trees/ha, SE = 23.7) was similar to other tropical sites, but mean liana density was much higher (2471 lianas/ha, SE = 104.3). Basal area of trees ≥10 cm DBH was low in Oquiriquia (19.2 m2/ha) in comparison to other tropical forests. Liana diversity, as expressed by the ratio of liana/tree species, was higher in this forest than in any other so far reported. Of trees ≥10 cm DBH, 86 percent carried lianas. Four tree species (Astrocaryum aculeatum, Euterpe precatoria, Xylopia sericea, and Astronium fraxinifoliu...
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