Record Display for the EPA National Library Catalog

RECORD NUMBER: 23 OF 418

OLS Field Name OLS Field Data
Main Title Algae and Crustaceans as Indicators of Bioactivity of Industrial Wastes.
Author Walsh, Gerald E. ; Duke, Kenneth M. ; Foster, Robert B. ;
CORP Author Environmental Research Lab., Gulf Breeze, FL.
Year Published 1981
Report Number EPA-600/J-81-112 ;CONTRIB-280;
Stock Number PB82-236423
Additional Subjects Indicator species ; Toxicology ; Algae ; Crustacea ; Bioassay ; Exposure ; Growth ; Reprints ; Bioindicators ; Water pollution effects(Animals) ; Selenastrum capricornutum ; Skeketonema costatum ; Daphnia magna ; Mysidopsis bahia
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Status
NTIS  PB82-236423 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 7p
Abstract
Freshwater (Selenastrum capricornutum) and estuarine (Skeketonema costatum) algae were exposed to liquid wastes from 10 industrial sites in laboratory bioassays. All wastes affected algal growth either by stimulation or by stimulation at low concentrations and inhibition at high concentrations. Generally S. capricornutum and Sk. costatum responded similarly to each waste: SC20's were between 0.01% waste; EC50's, between 5.1% and 85.5% waste. Toxicity to S. capricornutum was lost by the ninth day of exposure in all wastes except one, and it is recommended that algal tests be carried out for four days. Both algal species were more sensitive to the wastes than were Daphnia magna (freshwater) and Mysidopsis bahia (estuarine). Only three wastes were toxic to D. magna and two were toxic to D. magna and two were toxic to M. bahia. SC20 and EC50 values are used to calculate the 7-day, 10-year flow rate required for dilution of effluents to non-toxic concentrations.