Record Display for the EPA National Library Catalog


Main Title Historical review of water quality and climatic data from Chesapeake Bay with emphasis on effect of enrichment
Author Heinle, Donald. ; D'Elia, Christopher F. ; Taft, Jay L. ; Wilson, John S. ; Cole-Jones, Marthe
CORP Author Maryland Univ., Solomons. Chesapeake Biological Lab.;Environmental Protection Agency, Annapolis, MD. Chesapeake Bay Program.
Publisher U.S. Environmental Protection Agency, Center for Environmental Research Information,
Year Published 1982
Report Number EPA-600/3-82-083; UMCEES-80/15-CBL; EPA-R-806189010; EPA/CBP-TR-002E
Stock Number PB82-265471
OCLC Number 16759243
Subjects Water quality--Chesapeake Bay ; Eutrophication--Chesapeake Bay
Additional Subjects Algae ; Phosphorus ; Water pollution ; Chesapeake Bay ; Climatic changes ; History ; Nutrients ; Concentration(Composition) ; Oxygen ; Dissolved gases ; Nitrogen ; Marine fishes ; Biological productivity ; Shellfish ; Turbidity ; Coliform bacteria ; Chlorophylls ; Iron ; Salinity ; Patuxent River ; Potomac River ; Eutrophication ; Tropic level
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJAD  EPA 600/3-82-083 Region 3 Library/Philadelphia, PA 10/25/1996
ESAD  EPA 600-3-82-083 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB82-265471 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 239 p. ; 28 cm.
Review of the available data on water quality in Chesapeake Bay has revealed changes over recent decades caused by enrichment with nutrients. In the upper and middle bay, and several tributaries, concentrations of algae present during the summer months have increased since the mid 1960's. There have been decreases in the clarity of the water associated with increased algal stocks. Nutrient concentrations have also increased, phosphorus more notably so than nitrogen. In some of the tributaries increased algal production has led to reduced concentrations of oxygen below the halocline in the middle part of the estuary. Oxygen concentrations in the open bay have not changed greatly with the possible exception of extreme conditions, as during periods of extensive ice cover. Since 1969 or 1970, however, stocks of many anadromous species and marine spawners representing higher tropic levels have declined to new long-time lows.
"September 1982"