Abstract
The abiotic, historical, and autecological factors determining the range sizes of tropical plant species and the distribution of endemism are still poorly understood. In this study, the variation of range-size rarity was analyzed among the bromeliad communities of 74 forest sites in the Bolivian Andes and adjacent lowlands with respect to 14 environmental factors reflecting mostly climatic conditions and to species attributes such as life-form, ecophysiological type, pollination mode, and fruit type. The global ranges of all 192 recorded bromeliad species were mapped on a 1° grid, quantified as the number of 1° grids occupied by a species, and range-size rarity indices were calculated as the mean inverse range size of all species at a given study site.
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