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OLS Field Name OLS Field Data
Main Title Size dependent model of hazardous substances in aquatic food chain /
Author Thomann, Robert V.
CORP Author Manhattan Coll., Bronx, N.Y.;Environmental Research Lab.,-Duluth, Minn.
Publisher Environmental Research Laboratory - Duluth, Office of Research and Development, U.S. Environmental Protection Agency ; National Technical Information Service [distributor],
Year Published 1978
Report Number EPA-600/3-78-036; EPA-R-803680
Stock Number PB-281 009
OCLC Number 06683389
Subjects Water--Pollution. ; Food chains (Ecology)--Mathematical models.
Additional Subjects Hazardous materials ; Water pollution ; Lakes ; Mathematical models ; Food chains ; Marine microorganisms ; Fishes ; Size determination ; Bioassay ; Absorption ; Biomass ; Excretion ; Biphenyl ; Hydrocarbons ; Concentration(Composition) ; Accumulation ; Lake Ontario ; Biphenyl/chloro ; Polychlorinated biphenyls
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EIAD  EPA-600/3-78-036 Region 2 Library/New York,NY 03/31/2005 DISPERSAL
EJBD ARCHIVE EPA 600-3-78-036 Headquarters Library/Washington,DC 02/03/2014
EJBD  EPA 600-3-78-036 c.1 Headquarters Library/Washington,DC 05/02/2014
EKAM  EPA 600/3-78-036 Region 4 Library/Atlanta,GA 05/13/1994
EKCD  EPA-600/3-78-036 CEMM/GEMMD Library/Gulf Breeze,FL 06/26/2018
ELDD  EPA-600/3-78-036 3 copies CCTE/GLTED Library/Duluth,MN 05/04/2001
ESAD  EPA 600-3-78-036 Region 10 Library/Seattle,WA 07/19/2005
NTIS  PB-281 009 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 01/01/1988
Collation viii, 40 pages : illustrations ; 28 cm.
Abstract A model of toxic substance accumulation is constructed that introduces organism size as an additional independent variable. The model represents an ecological continuum through size dependency; classical compartment analyses are therefore a special case of the continuous model. Size dependence is viewed as a very approximate ordering of trophic position. The analysis of some PCB data in Lake Ontario is used as an illustration of the theory. A completely mixed water volume is used. Organism size is considered from 100 micrometers to 1,000,000 micrometers. PCB data were available for 64 micrometers net hauls, alewife, smelt, sculpin and coho salmon. The analysis indicated that about 30% of the observed 6.5 micrograms PCB/gm fish as the coho salmon size range is due to transfer from lower levels in the food chain and about 70% from direct water intake. The model shows rapid accumulation of PCB with organism size due principally to decreased excretion rates and decreased biomass at higher trophic levels.
Notes "April 1978." Includes bibliographical references (pages 36-39). "Contract no. R803680030."
Place Published Duluth, Minn. Springfield, Va.
Corporate Au Added Ent Environmental Research Laboratory (Duluth, Minn.)
Title Ser Add Ent Research reporting series. Ecological research ; EPA-600/3-78-036.
PUB Date Free Form 1978
Series Title Untraced Ecological research series ; EPA-600/3-78-036
NTIS Prices PC A04/MF A01
BIB Level m
Medium unmediated
Content text
Carrier volume
Cataloging Source OCLC/T
OCLC Time Stamp 20180621074228
Language eng
SUDOCS Number EP 1.23:600/3-78-036
Origin OCLC
OCLC Rec Leader 01872cam 2200469Ia 45010