Patterns in young-of-year smallmouth bass microhabitat use in multiple stream segments with contrasting land uses

Fisheries Management and Ecology
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Abstract

Young-of-the-year (YOY) smallmouth bass, Micropterus dolomieu Lacep??de, were evaluated in streams from eight catchments with two contrasting land uses to determine their use of microhabitats under a variety of stream conditions. Step-wise discriminant function analyses revealed patterns of habitat use by discriminating used from available microhabitat conditions. Velocity was significant in 88% of streams sampled, whereas depth was significant in only the smallest stream in the forest-dominated catchments and 75% of stream segments located in pasture-dominated catchments. Mean velocities used by YOY bass were lower than available velocities, and mean depths used were greater than mean availability in all cases. Substrata varied significantly with availability in different stream segments. Error rates associated with classification ranged from 5 to 39%. Results indicate that YOY smallmouth bass are somewhat opportunistic, but use low-velocity habitats in most cases and deeper water when streams are impacted by pasture land use and associated physical changes. Published 2011. This article is a U.S. Government work and is in the public domain in the USA.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Patterns in young-of-year smallmouth bass microhabitat use in multiple stream segments with contrasting land uses
Series title Fisheries Management and Ecology
DOI 10.1111/j.1365-2400.2011.00806.x
Volume 18
Issue 6
Year Published 2011
Language English
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Fisheries Management and Ecology
First page 506
Last page 512