Record Display for the EPA National Library Catalog

RECORD NUMBER: 8 OF 41

OLS Field Name OLS Field Data
Main Title Ecological Alterations of Iowa Prairie-Agricultural Streams.
Author Menzel, B. W. ; Barnum, J. B. ; Antosch, L. M. ;
CORP Author Iowa Agricultural and Home Economics Experiment Station, Ames.;Corvallis Environmental Research Lab., OR.
Year Published 1984
Report Number J-11018; EPA-R-807122; EPA/600/J-84/121;
Stock Number PB85-106771
Additional Subjects Invertebrates ; Ecology ; Water pollution ; Cedar River Basin ; Channel improvements ; Surveys ; Sediments ; Fishes ; Crayfishes ; Minnows ; Land use ; Substrates ; Classifications ; Iowa ; Tables(Data) ; Reprints ; Habitats
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB85-106771 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 28p
Abstract
Water quality, habitat structure, and macroinvertebrate and fish communities were surveyed in 1979-1980 in ten headwater streams of the Cedar River basin. All streams are affected by moderate to intensive agricultural land use in their watersheds, and the purpose of the study was to describe stream ecological changes caused by this influence. Most streams carried heavy sediment and nutrient loads, had fine-particulate substrates, were extensively channelized, had a wide range in daily flows, and were largely devoid of instream vegetation. Water quality was highest and habitat structure was most complex in a woodland stream, and a pattern of environmental differences was measured among the nine prairie streams. Ten fish species, mainly minnows, were identified as fish community dominants in all streams.