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Habitat Use by an Assemblage of Fish in a Large Warmwater Stream

 

作者: M.Delbert Lobb,   DonaldJ. Orth,  

 

期刊: Transactions of the American Fisheries Society  (Taylor Available online 1991)
卷期: Volume 120, issue 1  

页码: 65-78

 

ISSN:0002-8487

 

年代: 1991

 

DOI:10.1577/1548-8659(1991)120<0065:HUBAAO>2.3.CO;2

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

We examined habitat-use patterns in a fish assemblage in a large warmwater stream in West Virginia. Fish species and life stage composition and densities differed among habitat types, and five habitat-use guilds (edge pool, middle pool, edge channel, riffle, and generalist) were proposed. Larger centrarchids used deep habitats with slow velocities, whereas young centrarchids used shallower habitat. Juvenile and adult smallmouth bassMicropterus dolomieuiwere nearly ubiquitous in the habitats of the study area, although densities were highest among snags. Minnows and darters used shallower areas, but the range of velocity used differed among species and life stages. Vegetated and channel edge habitats served as nursery areas. Total fish densities were highest in edge pool, backwaters, snags, edge riffles, and riffles. Nearshore, structurally complex habitats seem important in influencing the assemblage structure of fishes of large streams.

 

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