TY JOUR TI RESULTS OF THE POLLOCK FISHING SEASON OF THE SEA OF OKHOTSK IN 2020 KW pollack expedition of sea of okhotsk KW total allowable catch (tac) KW catch KW tac realization KW fisheries situation KW fleet distribution KW synoptic conditions KW ice conditions KW thermal conditions KW stock KW catch per unit effort KW size composition JO Fisheries AU Varkentin, A.I. AU Kolomeytsev, V.V. PY 2020 IS 2020 PB FSBI "TSUREN"