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Distribution of Midwestern Fishes on Multivariate Environmental Gradients, with Emphasis on Notropis lutrensis
William J. Matthews
The American Midland Naturalist
Vol. 113, No. 2 (Apr., 1985), pp. 225-237
Published by: The University of Notre Dame
Stable URL: http://www.jstor.org/stable/2425568
Page Count: 13
You can always find the topics here!Topics: Species, Fish, Taxa, Quadrants, Streams, Principal components analysis, Freshwater fishes, Biological taxonomies, Habitat selection, Statistical variance
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The abundance of Notropis lutrensis, and presence-absence of eight midwestern fishes are quantified on environmental gradients identified by principal components analysis of conditions at 101 field localities in eight states at which collections were made in one 35-day span of 1978. Although all species included in the analysis have large geographic ranges, they differ in their patterns of distribution, ranging from "rare-specialists" to "common-generalists" in this analysis, and in distribution across the suites of environmental conditions which are considered to define multivariate environmental space. The environments of the species identified by principal components analysis agreed with and supported the relatively subjective autecological descriptions of species' habitats found in standard reference works, providing mutual support for both approaches to evaluating ecology of fishes.
The American Midland Naturalist © 1985 The University of Notre Dame