Record Display for the EPA National Library Catalog

RECORD NUMBER: 273 OF 1150

OLS Field Name OLS Field Data
Main Title Effects of Atrazine on Aquatic Ecosystems: A Physical and Mathematical Modeling Assessment.
Author Malanchuk, J. L. ; Kollig, H. P. ;
CORP Author State Univ. of New York Coll. at Plattsburgh.;Environmental Research Lab., Athens, GA.
Year Published 1985
Report Number EPA/600/J-85/015;
Stock Number PB85-195725
Additional Subjects Atrazine ; Ecology ; Aquatic biology ; Marine biology ; Water pollution ; Herbicides ; Inorganic nitrates ; Inorganic phosphates ; Mathematical models ; Nutrients ; Hazards ; Comparison ; Model tests ; Experimental design ; Reprints ; Ecosystems ; Microcosms
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB85-195725 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 15p
Abstract
Physical and mathematical models were employed to determine the effects of atrazine on pH, dissolved oxygen, and dissolved nutrients in aquatic systems. The data show that changes in measured variables are observed in the presence of toxicant but that systems recover rapidly when toxicant input ceases. Simple linear donor-controlled mathematical models of nutrient cycles are capable of simulating the effect, although sufficient model detail should be incorporated to account for direct and indirect effects and to improve verification. System measurements are responsive in terms of disruption and recovery. Changes in nutrient cycling patterns should be incorporated into the hazard evaluation process.