Record Display for the EPA National Library Catalog

RECORD NUMBER: 223 OF 1390

OLS Field Name OLS Field Data
Main Title Effects of Elevated Ammonia Levels on the Fingernail Clam, 'Musculium transversum', in Outdoor Experimental Streams.
Author Zischke, J. A. ; Arthur, J. W. ;
CORP Author Environmental Research Lab.-Duluth, Monticello, MN. Monticello Ecological Research Station. ;Saint Olaf Coll., Northfield, MN.
Year Published 1987
Report Number EPA/600/J-87/036;
Stock Number PB87-203345
Additional Subjects Ammonia ; Clams ; Water pollution ; Streams ; Concentration(Composition) ; Exposure ; Growth ; Survival ; Reproduction(Biology) ; Abundance ; Comparison ; Reprints ; Musculium transversum ; Fingernail clam
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB87-203345 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/21/1988
Collation 9p
Abstract
The effects of ammonia on survival, growth, and reproduction of the fingernail clam. Musculium transversum were tested in outdoor experimental streams. In the summers of 1983 and 1984 caged clams were exposed in the streams. During the 1983 studies, the weekly mean NH 3 ranges in the low, medium and high concentration streams were, respectively, 0.02-0.08, 0.04-0.25 and 0.14-0.56 mg/l; in 1984 the ranges in the same streams were 0.04-0.20, 0.07-0.38 and 0.48-1.17 mg/L. In the first year studies, survival was highest (50-85%) in the control and low NH3 streams, lower (30-55%) in the medium NH3 stream and no clams survived the high NH3 treatment. Growth was also greater in the control and low NH3 streams.