Record Display for the EPA National Library Catalog

RECORD NUMBER: 37 OF 40

OLS Field Name OLS Field Data
Main Title Trophic Structure, Reproductive Success, and Growth Rate of Fishes in a Natural and Modified Headwater Stream.
Author Schlosser, Isaac J. ;
CORP Author Illinois Univ. at Urbana-Champaign. Dept. of Ecology, Ethology and Evolution.;Corvallis Environmental Research Lab., OR.
Year Published 1982
Report Number EPA-R-806391; EPA-600/J-82-335;
Stock Number PB83-222661
Additional Subjects Fishes ; Ecology ; Channel improvements ; Stream pollution ; Stream flow ; Reproduction(Biology) ; Biomass ; Growth ; Seasonal variations ; Substrates ; Tables(Data) ; Reprints ; Habitats ; Carpoides cyprinus ; Dorosoma cepedianum
Internet Access
Description Access URL
http://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=2000TYR9.PDF
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB83-222661 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 14p
Abstract
The impact of removing riparian vegetation, channel straightening, and fluctuations in flow regime on trophic structure, reproductive success, and growth rate of fishes was assessed in a natural (Jordan Creek(JC)) and modified (Big Ditch(BD)) headwater stream in eastcentral Illinois. Fish in JC were predominantly benthic insectivores and insectivore - piscivores: trophic structure, age structure, and biomass were stable between years and seasons. Adult fish and recruits in BD were predominantly generalized insectivores, omnivores, and herbivore-detritivores; the last two were primarily mid-river species (Carpoides cyprinus and Dorosoma cepedianum). Considerable seasonal and annual variation in trophic structure, total biomass, and age structure occurred in BD associated with annual fluctuations in flow regime, abundance of organic substrates, and reproductive success of mid-river species.