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 |
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB83-222661 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
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. |
Availability Notes |
Pub. in Canadian Jnl. of Fisheries and Aquatic Science, v39 p968-978 1982. |
NTIS Title Notes |
Journal article. |
Title Annotations |
Reprint: Trophic Structure, Reproductive Success, and Growth Rate of Fishes in a Natural and Modified Headwater Stream. |
PUB Date Free Form |
c1982 |
Category Codes |
13B; 8H; 6F; 68D; 50B; 48G; 57H |
NTIS Prices |
Not available NTIS |
Primary Description |
600/02 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
321721669 |
Origin |
NTIS |
Type |
CAT |