Development and Parameterization of a Kinetic Framework for Modeling Light- and Phosphorus- Limited Phytoplankton Growth in Cannonsville Reservoir

Abstract

ABSTRACT A mechanistic framework for simulating phytoplankton growth kinetics in lakes and reservoirs is described. The framework is based on published physiological submodels describing light- and phosphorus-limitation of phytoplankton growth and the relationship between the rates of growth and respiration. The physiological submodels were tested and related kinetic coefficients defined through a program of field measurement and laboratory experimentation. Values for kinetic coefficients were determined using the natural phytoplankton assemblage of Cannonsville Reservoir, a part of the New York City drinking water supply system. The suite of submodels was shown to satisfactorily represent the phytoplankton response to variation in the light and nutrient regime of the reservoir. Efforts to test submodels and determine kinetic coefficients on a site-specific basis are believed to enhance the credibility and reliability of the model framework in its application for water quality management.