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2 Oceanologia

2 1998

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

Dzierzbicka-Głowacka L., Zieliński A.

Oceanologia

1998

No. 40 (4)

371-398

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.

An algorithm for calculating the concentration of phytoplankton in a stratified sea with respect to the daily migration of zooplankton. Part 1. P–V–Z–D model

Dzierzbicka-Głowacka L., Zieliński A.

Oceanologia

1998

No. 40 (4)

355-370

This paper presents a nutrient-phytoplankton-zooplankton-detritus biological model with a fully-developed regeneration mechanism with respect to the daily migration of zooplankton. The P-V-Z-D model consists of two partial differential equations of the diffusion type for the concentration of nutrients and phytoplankton, and two ordinary differential equations for the concentration of zooplankton and the benthic detritus pool, together with initial and boundary conditions.