Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Effects of Atrazine on Periphyton Communities in Controlled Laboratory Ecosystems.
Author Hamala, J. A. ; Kollig, H. P. ;
CORP Author Technology Applications, Inc., Athens, GA.;Environmental Research Lab., Athens, GA.
Year Published 1985
Report Number EPA-68-03-2926; EPA/600/J-85/235;
Stock Number PB86-131976
Additional Subjects Herbicides ; Water pollution ; Agricultural products ; Algae ; Farm crops ; Ecosystems ; Experimental design ; Nutrients ; Nitrogen organic compounds ; Reprints ; Path of pollutants ; Water pollution effects(Plants) ; Aatrex ; Microcosms ; Triazine/chloro-ethylamino-isopropylamino
Library Call Number Additional Info Location Last
NTIS  PB86-131976 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/21/1988
Collation 20p
An aquatic microcosm study was designed to evaluate the direct and indirect effects of a 14 day, 100 micrograms atrazine/L exposure on periphyton community functional and structural parameters and to determine the recovery rates of these parameters after removing the atrazine input. Direct and indirect effects were evidenced by an immediate and continual decrease in net productivity and by significantly reduced algal densities, decreased diversity, altered species composition, and reduced biomass accumulation. There were substantial differences in community recovery rates with net productivity returning to control value within 16 days while little recovery in community structural parameters occurred within the 21-day time period examined. (Copyright (c) 1985 Pergamon Press Ltd.)