||Effects of Elevated Ammonia Levels on the Fingernail Clam, 'Musculium transversum', in Outdoor Experimental Streams.
Zischke, J. A. ;
Arthur, J. W. ;
||Environmental Research Lab.-Duluth, Monticello, MN. Monticello Ecological Research Station. ;Saint Olaf Coll., Northfield, MN.
Water pollution ;
Musculium transversum ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||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.
||Pub. in Archives of Environmental Contamination and Toxicology 16, p225-231 1987. Prepared in cooperation with Saint Olaf Coll., Northfield, MN.
|NTIS Title Notes
||Reprint: Effects of Elevated Ammonia Levels on the Fingernail Clam, 'Musculium transversum', in Outdoor Experimental Streams.
|PUB Date Free Form
||68D; 57Z; 48G
||PC A02/MF A01