Spatiotemporal patterns of fish assemblage structure in a river impounded by low-head dams

Copeia
By: , and 

Links

Abstract

We studied spatiotemporal patterns of fish assemblage structure in the Neosho River, Kansas, a system impounded by low-head dams. Spatial variation in the fish assemblage was related to the location of dams that created alternating lotic and lentic stream reaches with differing fish assemblages. At upstream sites close to dams, assemblages were characterized by species associated with deeper, slower-flowing habitat. Assemblages at sites immediately downstream from dams had higher abundance of species common to shallow, swift-flowing habitat. Temporal variation in assemblage structure was stronger than spatial variation, and was associated with fish life history events such as spawning and recruitment, as well as seasonal changes in environmental conditions. Our results suggest that low-head dams can influence spatial patterns of fish assemblage structure in systems such as the Neosho River and that such assemblages also vary seasonally.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Spatiotemporal patterns of fish assemblage structure in a river impounded by low-head dams
Series title Copeia
DOI 10.1643/CE-04-135R2
Volume 3
Year Published 2005
Language English
Publisher BioOne
Contributing office(s) Columbia Environmental Research Center
Description 11 p.
First page 539
Last page 549
Online Only (Y/N) N
Additional Online Files (Y/N) N