Data for: Stronger niche than dispersal effects on α- and β-diversity of stream algae, insects, and fish across latitudes in the US

Datasets containing 2687 algal sites, 3809 insect sites, and 2753 fish sites from streams in the conterminous United States were used to measure species range size and niche breadth. Smaller subsets from the middle United States (349 algal, and 350 insect and fish sites) were used to determine the relative importance of niche and dispersal processes on α- and β-diversity along a latitudinal gradient, comprising seven latitudinal zones.