Accepted_test

The dynamics of the main photosynthetic structures are studied using mathematical modeling methods. The models are based on variability in the proportion of chlorophyll in phytoplankton and the formation of energy-intensive substances during photosynthesis. These cellular components are considered from the point of view of their participation in the growth of specific biomass. Computational experiments simulating various external living conditions of a community of phytoplankton organisms are presented. The corresponding functions are built in accordance with seasonal fluctuations throughout the year in the Far Eastern region of Russia. The stability of model solutions over long-term dynamics is also studied. The models were tested for biological adequacy and their effectiveness was compared. For the model selected as a result of comparison, an optimal control problem is formulated and solved. It is shown that in this way it is possible to reduce the space of the initial components of the model system.