Record Display for the EPA National Library Catalog

RECORD NUMBER: 12 OF 307

OLS Field Name OLS Field Data
Main Title Algal Photosynthesis, Algal Abundance, and Chemistry of Lake Water at Fairmont, Minnesota.
Author Knol, Arlo S. ; Megar, Robert O. ;
CORP Author Minnesota Univ., Minneapolis. Limnological Research Center.
Year Published 1973
Report Number OWRR-A-026-MINN; 14364,; A-026-MINN(1)
Stock Number PB-223 428
Additional Subjects ( Algae ; Nutrients) ; ( Lakes ; Water chemistry) ; ( Water pollution ; Minnesota) ; Photosynthesis ; Abundance ; Seasonal variations ; Phosphorus ; Nitrogen ; Chlorophylls ; Ammonia ; Eutrophication ; Fairmont(Minnesota)
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB-223 428 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 49p
Abstract
Concentrations of phosphorus, nitrate, ammonia, oxygen, chlorophyll a, and rates of algal photosynthesis in 5 lakes in Fairmont, Minnesota, were measured during spring, summer, and autumn, 1972. The relative abundance of the planktonic algae in the lakes was assessed by measuring the concentrations of chlorophyll a, one of the green pigments in algae and other plants. The average concentration for all five lakes, 57 mg/cum, is about twice the average concentration in Lake Minnetonka, near Minneapolis, and also about twice the highest concentrations in Lake Erie, the most polluted of the Great Lakes.