Record Display for the EPA National Library Catalog

RECORD NUMBER: 3718 OF 4579

OLS Field Name OLS Field Data
Main Title Short Cycling of Contaminants by Zooplankton and Their Impact on Great Lakes Ecosystems.
Author McNaught, D. C. ;
CORP Author Minnesota Univ., Minneapolis. Dept. of Ecology and Behavioral Biology.;Environmental Research Lab.-Duluth.
Year Published 1982
Report Number EPA-R-804573; EPA-600/J-82-408;
Stock Number PB84-123819
Additional Subjects Zooplankton ; Ecology ; Water pollution ; Great Lakes ; Food chains ; Organic compounds ; Particles ; Biphenyl ; Concentration(Composition) ; Chlorine organic compounds ; Populations ; Environmental impacts ; Tolerances(Physiology) ; Reprints ; Air water interfaces ; Path of pollutants ; Ecosystems ; Polychlorinated biphenyls
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB84-123819 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 11p
Abstract
Field evidence for short cycling of organic contaminants, from sources at the air-water interface directly into the zooplankton and fishes, has generally been lacking in the literature. The potential mechanisms, however, have been intensively explored; these are dominated by the formation of organic platelets at the air-water interface and the availability to grazers of other forms of suspended detritus. Susceptibility of the zooplankton to short cycling of contaminants thus depends upon their demonstrated propensity to feed near the surface of the lakes. As contrasted with missing environmental information, experimental evidence for short cycling is clear; the experimental inclusion of small, organic particles along with natural assemblages of nannoplankton increased PCB loading to the zooplankton 2.3 times. Further field evidence on the magnitude of short cycling must be sought, because contaminants soluble in oils influence the entire food chain. (Copyright (c) Internat. Assoc. Great Lakes Res. 1982.)