Scientists from St. Petersburg have conducted limnology studies of Lake Paranino and Bolshoye Vygozero Lake that are located in Onezhskoye Pomorye National Park in the Arkhangelsk Region, the park's press service reported.

The study included a bathymetric survey, which is the measure of water depth through high-frequency echo sound waves. The data will be used to create a 3D model of the lakes for study and monitoring.

"The 3D model will graphically show the shape of the lakes' basins. These two lakes were chosen for a reason. They belong to two different lake systems, one located in the coastal marine zone and the other is deep in the peninsula," Deputy Director for Science at Onezhskoye Pomorye National Park Andrei Volkov said.

Scientists selected samples of phytoplankton and zooplankton to determine species diversity and the depth of food reserves in the lakes. Efforts also included video observation of the lakes and the adjacent areas from unmanned aircraft.

"The survey results will be used in the creation of a system to provide monitoring of the national park's eco-system. This will allow us to keep track of the lakes' and their species' current conditions and to plan nature conservation events," Mr. Volkov pointed out.