Influence of a Waterfall Over Richness and Similarity in Adjoining Pools of an Atlantic Rainforest Stream

Abstract

Aim:The main goal of the study was to determine the effect of the Morato Fall in the richness and composition of the aquatic animal community; Methods: We compared faunal richness and similarity in four substrate samples from two pools separated by a waterfall in the Morato River, southern Brazil; Results: The richness was not significantly different, although the upstream pool had 72 taxa and the downstream one just 65. On the other hand, composition was poorly similar, just a 36.5% similarity between the two…