Структура уловов на рыбных промыслах в северо-западной части Берингова моря

Terentiev D.A., Vasilets P.M. Catch structure by fishery gears in the north-western Bering Sea // Izv. TINRO. 2005. Vol. 140. P. 18-36.
Data on catches collected by KamchatNIRO (14 cruises, >900 fishery operations in 1978, 1992-1994, 1996, 1998, 2000-2002) in the northwestern Bering Sea using different fishery equi pment (bottom ling-line, Danish seine, bottom and mid-water trawls) are analyzed, as well as the data on commercial fishery obtained from the information system 'Rybolovstvo' for 2001-2003. Official commercial fishery statistics is compared with results of control fishing in order to understand a real structure of catches and a real volume of possible bycatch.
Recently, a mid-water trawl is the basic fishery gear using in the northwestern Bering Sea. However, both seasonal dynamics and spatial differentiation of fishery gears within the region are revealed. Bottom trawl, Danish seine and long-line have a complex structure of catches. Possible bycatch can exceed 541.0 tons per 100 tons of main species for the bottom trawl fishing, it reaches 73.3 t for the Danish seine fishing and 44.7 t - for the bottom long-line fishing. Thus, offences of executive 'Rules of fishing...' (1989) are practically inevitable when using these fishery gears. Moreover, we suppose a significant underestimation of the share of walleye Pollock in official statistic of the Danish seine and bottom trawl fishing that causes a distorted impression about a real situation on the commercial fishery press to fish populations in the region.