Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Seasonal Toxicity of Ammonia to Five Fish and Nine Invertebrate Species.
Author Arthur, J. W. ; West, C. W. ; Allen, K. N. ; Hedtke, S. F. ;
CORP Author Environmental Research Lab.-Duluth, MN.
Year Published 1987
Report Number EPA/600/J-87/038;
Stock Number PB87-203329
Additional Subjects Ammonia ; Aquatic animals ; Toxicity ; Seasonal variations ; Sensitivity ; Stream pollution ; Fishes ; Invertebrates ; Reprints ;
Library Call Number Additional Info Location Last
NTIS  PB87-203329 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/21/1988
Collation 10p
The effects of ammonia toxicity were determined for 14 aquatic species (5 fish and 9 invertebrates) in short-term laboratory tests. Forty-five tests were conducted and individual 96-h values (48-h for cladocera) ranged from 0.26 to 22.8 mg/1 NH3. The most sensitive fish and invertebrate species tested with ammonia were the rainbow trout and fingernail clam with geometric mean LC50 values of 0.53 and 1.10 mg/1 NH3, respectively. The most tolerant organisms were caddisfly and crayfish species. Differences in toxicity to ammonia among the fish species was a factor of four and a factor of 17 times for the tested invertebrate species. The short-term tests did not demonstrate a relationship between unionized ammonia (NH3) toxicity and test temperature.