Record Display for the EPA National Library Catalog


Main Title Mathematical Modeling of Phytoplankton in Lake Ontario. 1. Model Development and Verification.
Author Thomann, Robert V. ; DiToro, Dominick M. ; Winfield, Richard P. ; O'Connor., Donald J. ;
CORP Author Manhattan Coll., Bronx, N.Y. Environmental Engineering and Science Program.;National Environmental Research Center, Grosse Ile, Mich. Grosse Ile Lab.
Year Published 1974
Report Number EPA-R-800610; EPA/660/3-75-005;
Stock Number PB-241 046
Additional Subjects Water pollution ; Nutrients ; Lake Ontario ; Mathematical models ; Plankton ; Biomass ; Chlorophylls ; Inorganic phosphates ; Simulation ; Inorganic nitrates ; Water quality ; Finite difference theory ; Growth ; Eutrophication
Library Call Number Additional Info Location Last
NTIS  PB-241 046 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 189p
The basic mathematical structure for describing the dynamics of phytoplankton in Lake Ontario is presented in the report. Data on chlorophyll and principle nutrients are reviewed and summarized and the mathematical modeling strategy is detailed. The modeling strategy begins with the construction of a horizontally completely mixed lake with vertical layers, LAKE 1. This spatially simplified model is used to develop the interactions and kinetic behavior of the various components of each subsystem. A more detailed three-dimensional model is then used to describe open lake and near shore variations in phytoplankton biomass. Ten biological and chemical variables are used in both models and include four trophic levels above the phytoplankton, chlorophyll as a measure of phytoplankton biomass two phosphorus components and three nitrogen components. The model can form a basis for preliminary estimates of the effects of nutrient reduction programs on Lake Ontario.