Data from: Aquatic community structure across an Andes-to-Amazon fluvial gradient

Nathan K. Lujan, Katherine A. Roach, Dean Jacobsen, Kirk O. Winemiller, Vanessa Meza Vargas, Vania Rimarachín Ching & Jerry Arana Maestre
Aim: Little is known about factors affecting the elevational and longitudinal zonation of tropical Andean stream communities. We investigated epilithon, macroinvertebrate and fish assemblages along a 4100-m elevational–longitudinal gradient in an Andean headwater of the Amazon Basin. We interpret our results within the context of environmental factors, emphasizing temperature, as well as ecological theory relating shifts in metazoan functional feeding groups to shifts in basal resources along the fluvial continuum. Location: Arazá-Inambari-Madre de Dios watershed,...
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