The most significant features of modeling the cycle of compounds of biogenic elements (nitrogen and phosphorus) and the dynamics of dissolved oxygen in the ecosystem of Lake Teletskoye are considered. The model was calibrated taking into account data from long-term observations of water quality in 1985-2003, as well as a scenario version of the hydrological regime in 2016. The analysis of the intra-annual variability for the state variables, external and internal fluxes of nitrogen and phosphorus compounds in the water is given. The permissible load of nitrogen and phosphorus on the lake is calculated. The model analysis showed that the lakes assimilation potential with respect to phosphorus compounds is insignificant, practically absent. In relation to nitrogen compounds, there is still a small reserve of self-purification. The water is clean not due to sufficient assimilation, but due to the fact that there has been a low anthropogenic load so far. The obtained model results indicate the urgent need to bring the research to a modern level, both in terms of the number for observation points of the monitoring network in characteristic zones, increasing the list of monitored indicators and the frequency of monitoring, and improving the quality of the instrumental and methodological base.
A.A. Tskhai (2025) studied this question.