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26 February 2010 Fish Assemblages and Substrates in the Middle Wabash River, USA
Robert Mueller, Mark Pyron
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Abstract

We collected fishes at 28 sites of the middle Wabash River, Indiana, using a boat electrofisher and at ten additional sites using a 10-m beach seine. We used Canonical Correspondence Analysis to test for fish assemblage variation that was explained by variation in water depth and substrate frequency. The multivariate analyses resulted in a longitudinal gradient in water depth and frequency of occurrence of substrate size categories that explained a large component of variation among fish assemblages for both sampling regimes. Our results illustrate that substrate composition and water depth variation are significant environmental predictors of fish assemblage composition for a large river such as the Wabash River.

2010 by the American Society of Ichthyologists and Herpetologists
Robert Mueller and Mark Pyron "Fish Assemblages and Substrates in the Middle Wabash River, USA," Copeia 2010(1), 47-53, (26 February 2010). https://doi.org/10.1643/CE-08-154
Received: 29 August 2008; Accepted: 1 September 2009; Published: 26 February 2010
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