Stability of the Wabash River fish assemblages from 1974 to 1998

Summary 1. We measured temporal variability of the fish assemblage in the Wabash River using a 25‐year electrofishing dataset through a combination of a time‐lag analysis and multivariate analysis. 2. The fish assemblage had substantial year‐to‐year variation, but the overall abundance pattern did n...

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Bibliographic Details
Published in:Freshwater biology 2006-10, Vol.51 (10), p.1789-1797
Main Authors: PYRON, MARK, LAUER, THOMAS E., GAMMON, JAMES R.
Format: Article
Language:English
Subjects:
Agnatha. Pisces
Animal and plant ecology
Animal, plant and microbial ecology
assemblage stability
Biological and medical sciences
community
fisheries
fishes
Fresh water ecosystems
Freshwater
Fundamental and applied biological sciences. Psychology
Pisces
river
Synecology
Vertebrates: general zoology, morphology, phylogeny, systematics, cytogenetics, geographical distribution
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Summary:Summary 1. We measured temporal variability of the fish assemblage in the Wabash River using a 25‐year electrofishing dataset through a combination of a time‐lag analysis and multivariate analysis. 2. The fish assemblage had substantial year‐to‐year variation, but the overall abundance pattern did not change. Based on time‐lag analyses and ordinations, there was only weak predictable directional change at individual sites. At the scale of the entire reach, however, the overall combined data had a statistically significant directionality with the time‐lag analysis. 3. These results support the hypothesis that the middle Wabash River stream fish assemblage has undergone change over a time period of 25 years, although at the scale of individual sites this change was not detectable.
ISSN:0046-5070
1365-2427
DOI:10.1111/j.1365-2427.2006.01609.x