An algorithm for calculating the concentration of phytoplankton in a stratified sea with respect to the daily migration of zooplankton. Part 2. Numerical simulation

The numerical studies were carried out using a (nutrient-phytoplankton-zooplankton-detritus) biological model with a well-developed regeneration block. This paper presents the time-dependent vertical distributions of biological characteristics (concentrations nutrients, phytoplankton and zooplankton and benthic detritus pool) on the assumption that the horizontal distribution of these parameters is uniform. The calculations were made in an area 0 ≤z≤ 20 m with a vertical scale step of 10 cm and a time scale step of 15 min. The experimental data, gathered during the PEX '86 international scientific experiment of the Baltic states, and those by the International Council for the Exploration of the Sea, were used as the input data for the calculations.