The research was aimed at scientific support of trawling and the collection of ichthyological data — they are needed to assess the size and age structure of stocks of aquatic biological resources.
The work was carried out directly during the trawl fishing, as well as on the basis of the Krasny Maryak fishing collective farm on Lake Sartlan. The scientists performed a biological analysis of more than 100 fish specimens and conducted mass measurements of over 1,500 individuals. These data help to determine the structure of herds of key species of ichthyofauna in the water areas.
In autumn, the main objects of catches were carp and crucian carp. Lake Sartlan and Vats are of high productivity within the West Siberian fishery basin. Regular assessment of fish stocks creates a solid scientific basis for sustainable management of fisheries and biodiversity conservation in the region.
In addition to accompanying industrial fishing, experts monitored amateur fishing: The number of fishermen, types of transport and mining tools were recorded, and the species and quantity of catches were taken into account. This information complements the overall picture of the withdrawal of aquatic biological resources and helps to more accurately assess the state of the ichthyofauna in autumn.
VNIRO Press Service
