Development of the Structure of a Unified Hydrobiological and Hydrochemical Database for the Information and Analytical System “Lake Onego and Its Cathment”

The work is devoted to the creation of the structure of the database of hydrobiological and hydrochemical characteristics of Lake Onego, obtained as a result of field observations for the period 1960–2022. This database will be used as a full-scale basis for the information and analytical system “Lake Onego and its catchment”, which is being actively developed within the framework of the Russian Science Foundation project No. 22-17-00193. This is a necessary tool for the calibration and verification of Lake Onego ecosystem models. The paper presents an algorithm and methodology for the formation of a single network of sampling stations, for the possibility of integrating the results of hydrobiological and hydrochemical measurements. The technique takes into account the spatial and temporal heterogeneity of the available data.