Record Display for the EPA National Library Catalog


Main Title Predicting Concentration of Total Phosphorus and Chlorophyll 'a' in a Lake with Short Hydraulic Residence Time.
Author Premo, B. J. ; McNabb, C. D. ; Payne, F. C. ; Batterson, T. R. ; Craig, J. R. ;
CORP Author Michigan State Univ., East Lansing. Dept. of Fisheries and Wildlife.;Corvallis Environmental Research Lab., OR.
Year Published 1985
Report Number EPA-R-805046; EPA/600/J-85/262;
Stock Number PB86-163805
Additional Subjects Phosphorus ; Chlorophylls ; Skinner Lake ; Nutrients ; Stream flow ; Mathematical models ; Concentration(Composition) ; Algae ; Chemical analysis ; Temperature ; Flushing ; Summer ; Nitrogen ; Tables(Data) ; Indiana ; Reprints ; Organic loading ; Thermal stratification
Library Call Number Additional Info Location Last
NTIS  PB86-163805 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 13p
The relationship between total phosphorus and chlorophyll a concentration was determined for Skinner Lake, Indiana over an annual cycle in 1978-79. Total nitrogen: total phosphorus ratios in the epilimnion ranged from 19 to 220 suggesting a phosphorus-dependent algal yield in the epilimnion. Approximately 90% of annual TP loading reached the lake via streamflow, and 93% of this entered during snowmelt and spring-overturn periods. At that time incoming water flushed the lake 2.4 times. Atmospheric loading accounted for 1.4% of annual TP load. Internal hypolimnetic TP loading occurred during summer stratification. The 1978-79 data were used in conjunction with the Vollenweider & Kerekes model to produce a model specific for the Skinner Lake system. The model predicted mean epilimnetic total phosphorus and chlorophyll a concentrations from mean total phosphorus concentration in inlet streams and from lake water residence time during the period of spring overturn and summer stratification.