TY JOUR TI Hydroacoustic assessment of Baikal omul (Coregonus migratorius) reserves based on the results of two-year studies in the spring-summer period of 2021 and 2022 KW Lake Baikal KW omul (Coregonus migratorius) KW hydroacoustic survey KW surface density KW biomass KW number KW echosounder KW control catches JO Fisheries AU Goncharov, S.M. AU Popov, S.B. AU Peterfeld, V.A. AU Bazov, A.V. AU Klyuchareva, N.G. PY 2023 IS 2023 PB FSBI "TSUREN"