Record Display for the EPA National Library Catalog


Main Title Relationships of productivity and problem conditions to ambient nutrients : National Eutrophication Survey findings for 418 Eastern lakes /
Author Williams, Llewellyn R., ; Lambou, Victor W. ; Hern, Stephen C. ; Thomas., Robert W.
Other Authors
Author Title of a Work
Lambou, Victor W.,
Hern, S. C.,
Thomas, Robert William,
Williams, Llewellyn R.
CORP Author Environmental Monitoring and Support Lab., Las Vegas, Nev.
Publisher Environmental Protection Agency, Office of Research and Development, Environmental Monitoring and Support Laboratory,
Year Published 1978
Report Number EPA-600/3-78-002; EPA 600-R-77-113; Working paper no.725.
Stock Number 22161
OCLC Number 03879045
ISBN pbk.
Subjects Eutrophication--Northeastern States ; Eutrophication--Southern States ; Lake ecology--Northeastern States ; Lake ecology--Southern States
Additional Subjects Nutrients ; Primary biological productivity ; Chlorophylls ; Lakes ; Water pollution ; Surveys ; Phosphorus ; Stratification ; Aquatic plants ; Nitrogen ; Turbidity ; pH ; Concentration(Composition) ; Algae ; Plankton ; Oxygen ; Dissolved gases ; Aquatic weeds ; Correlation techniques ; Water quality ; Eutrophication
Internet Access
Description Access URL
Nov. 1977 Working Paper
Library Call Number Additional Info Location Last
EJBD  EPA 600-3-78-002 Headquarters Library/Washington,DC 10/27/2014
ELBD ARCHIVE EPA 600-3-78-002 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ELBD  EPA 600-3-78-002 AWBERC Library/Cincinnati,OH 02/22/2011
ELBD ARCHIVE EPA NES-WP-725 (November 1977) Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ESAD  EPA 600-3-78-002 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB-276 987 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation v, 20 pages : illustrations ; 28 cm.
Data collected by the National Eutrophication Survey (NES) team for 418 eastern lakes were utilized to determine correlations between chlorophyll alpha, an indicator of lake productivity, and nutrient and other water quality parameters. High linear correlations were determined between total phosphorus and mean chlorophyll alpha levels, especially in lakes with retention times of greater than 14 days. These basic relationships were compared for populations of lakes subdivided on the bases of stratification, vegetation dominance and fishery type. Relationships between lake 'problems' and nutrient or other water quality parameters were established by comparing historical and observational data of general lake conditions with physical, chemical and biological values obtained from NES sample analyses. The distributions of lakes with algal blooms, aquatic macrophyte problems, low dissolved oxygen concentrations, and/or fishkills are presented as functions of mean total phosphorus and chlorophyll alpha concentrations.
"EPA-600/3-78-002." "January 1978." Includes bibliographical references (page 20).