Modelling of living resources in aquaculture
The article briefly describes algorithms of a program proposed for mathematical modeling of dynamic ecosystems, MAEcoS, to be used in aquaculture. There is a description of model building for growing peled from larvae fish to yearlings in Lake Maloye Gorkoye, Karasuk region, Novosibirsk oblast in 2014. The default MAEcoS units are mg/m<sup>3</sup>. To the end of the growing period for peled, the biomass equal to 2,521.18 mg/m<sup>3</sup> is calculated, which equals 7.76 t of peled yearlings with the 20.7% output. In addition, a possible result with denser larvae seeding is shown. For the 10-fold density increase, the program shows that the peled biomass achieves its maximum before the catch time, by the third ten days of September and begins to actively decrease from the first decade of October as a result of food shortage and high competition. By the end of the period of 208 days, the commercial yield of peled yearlings is just 3.3 tons, which is 2.35 times less than in the first variant. As a result, MAEcoS program allows to forecast results of the work and to determine an optimal plan of actions to achieve a maximum result.