Padrões de abundância e raridade nas florestas Atlânticas do centro de endemismo de Pernambuco, Brasil

Abstract

This paper proposes to understand the structure of the dominance of species in the Atlantic Forest region corresponding to Endemism Center of Pernambuco, Brazil. Thus, it was verified that rare species locally would be rare throughout its regional distribution; or if rare, would be common in some other points. The species recognized as rare, in at least one community, amounted to 97% of the wealth. However, the group called “Common and Rare” was the most statistically representative, corresponding to 60%. Thus, research shows a pattern in which rare species are common in certain locations of their regional distribution (second hypothesis). The results suggest that there are strong ecological pressures that act on the species, such as intraspecific characteristics (size and mode of seed dispersal, growth form), life history, biogeography of the region, and other processes directly affect the relative abundance and consequently in common occurrence or rare.