Full Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Lake Minnetonka: Nutrients, Nutrient Abatement, and the Photosynthetic System of the Phytoplankton.
Author Megar, Robert O. ; Wright, J, Herbert E. ;
CORP Author Minnesota Univ., Minneapolis. Limnological Research Center.
Year Published 1970
Report Number OWRR-A-016-MINN; 08670,; A-016-MINN(4)
Stock Number PB-199 915
Additional Subjects ( Lakes ; Limnology) ; ( Phytoplankton ; Biological productivity) ; ( Photosynthesis ; Phytoplankton) ; Nutrients ; Algae ; Phosphorous ; Water quality ; Light ; Mathematical models ; Temperature ; Minnesota ; Water pollution ; Aquatic plants ; Minnetonka Lake ; Eutrophication
Library Call Number Additional Info Location Last
NTIS  PB-199 915 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 216p
Abstract Density of planktonic algae, rates of photosynthesis, nutrient concentrations, and other limnological characteristics were recorded during 1968-1970 in different parts of Lake Minnetonka, Minn. In the course of the past 30 years, the density of algae increased 2 or 3 times, and the dominance of diatoms was replaced by that of blue-green algae. A linear relationship was disclosed between the algae density and the content of total phosphorus within the range of 50 to 200 mg/cu m. A decrease of phosphorus below 45 mg/cu m promises a rapid improvement of the lake quality. The nutrient enrichment of the lake is largely due to the land runoff and storm drainage, rather than the discharge of sewage. A mathematical model of the photosynthetic system was based on the relation between the intensity of illumination and the biomass of algae. The report includes a detailed record of taxa and densities of algae during different months of 1968 and 1969. (WRSIC abstract)
Supplementary Notes Sponsored in part by Minnesota Resources Commission and the Minnesota Pollution Control Agency.
NTIS Title Notes Final rept..
PUB Date Free Form Dec 70,
Category Codes 8H; 13B; 6C; 64H; 68D; 57H
NTIS Prices PC A10 MF A01
Document Type NT
Cataloging Source NTIS/MT
Control Number 326518763
Origin NTIS
Type CAT