Large-eddy simulation of the coupled plankton-convection ecosystem in the ice-covered deep lake: maintenance of non-motile heavy diatoms in the photic zone

The first results of the construction of complex numerical models for physical and biological systems of a deep ice-covered lake in early biological spring period are presented. This complex includes an eddy-resolving model of the convective mixing in the under-ice water layer and a model for the dynamics of the nutrients-phytoplankton-zooplankton system. Effects on heavy phytoplankton (diatom) cells suspension in the photic zone are discussed in detail.