Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Community structure, nutrient dynamics, and the degradation of diethyl phthalate in aquatic laboratory microcosms
Author Hall, T. L. ; Hamala, J. A. ; Hendrix, P. F. ; Kollig, H. P. ; Krewer, J. A.
Other Authors
Author Title of a Work
Hall, T. L.
CORP Author Environmental Research Lab., Athens, GA.
Publisher U.S. Environmental Protection Agency, Environmental Research Laboratory ;
Year Published 1982
Report Number EPA-600/3-82-093
Stock Number PB83-136341
Subjects Water--Pollution--Georgia--Measurement
Additional Subjects Aquatic plants ; Aquatic animals ; Phthalates ; Biodeterioration ; Water pollution ; Model tests ; Concentration(Composition) ; Nutrients ; Inorganic compounds ; Phosphorus ; Chlorophylls ; Biomass ; Metabolism ; Algae ; Daphnia ; Fishes ; Bacteria ; Abundance ; Biological productivity ; Hydrolysis ; Graphs(Charts) ; Phthalic acid/(diethyl-ester) ; Microcosms ; Ecosystems ; Nitrification
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
NTIS  PB83-136341 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 01/01/1988
Collation xii, 135 p. ; 28 cm.
An investigation was conducted of the environmental fate of diethyl phthalate (DEP) in the continuous-flow channel microcosms housed in the USEPA's Environmental Research Laboratory, Athens, GA. The objectives of the investigations were to determine (1) whether a definable stable state could be achieved, (2) the effects of different nutrient treatments on ecosystem structure and function and on the fate of DEP, and (3) the degree of similarity between replicate microcosms. Aufwuchs assemblages in the microcosms reached fairly stable levels of biomass, metabolic activity, and similar species composition within 2 or 3 months after inoculation. Communities receiving direct nutrient inputs appeared to stabilize first, followed by downstream communities. A highly significant relationship between phosphorus inputs and aufwuchs chlorophyll a was established suggesting that the relatively stable input concentrations of inorganic nutrients into any given compartment were among the primary factors controlling maximum development of aufwuchs.
Caption title. Distributed to depository libraries in microfiche. At head of title: Project summary. "November 1982." "EPA-600/3-82-093." "PB83-136341"