Record Display for the EPA National Library Catalog

RECORD NUMBER: 47 OF 80

OLS Field Name OLS Field Data
Main Title Insect Community Structure as an Index of Heavy-Metal Pollution in Lotic Ecosystems.
Author Winner, R. W. ; Boesel, M. W. ; Farrell, M. P. ;
CORP Author Miami Univ., Oxford, OH.;Environmental Research Lab.-Duluth, MN.
Year Published 1983
Report Number EPA-R-805193; EPA-600/J-80-430;
Stock Number PB84-110675
Additional Subjects Metals ; Animal ecology ; Stream pollution ; Sampling ; Insects ; Diptera ; Copper ; Concentration(Composition) ; Larvae ; Correlation techniques ; Tables(Data) ; Reprints ; Bioindicators ; Habitats ; Heavy metals
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB84-110675 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 13p
Abstract
Data from two stream suggest that macroinvertebrate community structure exhibits a predictable, graded response to heavy-metal pollution. In the more heavily stressed sections of both streams, macroinvertebrates, other than tubificid worms and chironomids, were virtually eliminated from rock-rubble, riffle habitats. Midge larvae comprised 75 to 86% of all insects collected from the most grossly polluted stations and less than 10% of the insect commuities at the least polluted stations. The correlation coefficient for percentage of chironomids in relation to copper concentration was +0.93. The number of species of chironomids was inversely related to the proportional density of the family in samples. Caddisflies were numerically important at the intermediately polluted stations in both streams. Mayflies occurred only at the least polluted stations.