| Popis: |
The eastern Bering Sea bottom trawl survey has been conducted annually since 1975 by the Resource Assessment and Conservation Engineering Division of the Alaska Fisheries Science Center, National Marine Fisheries Service. The purpose of this survey is to collect data on the distribution and abundance of crab, groundfish, and other benthic resources in the eastern Bering Sea. These data are used to estimate population abundances for the management of commercially important species in the region. This document includes the time series of results from 1975 to the present. The historical annual abundance and biomass estimates were recalculated with changes in which tows were included, the size-weight regressions used for biomass, and the criteria used for defining maturity. As a result, the historical estimates presented in this document may be different from previous year’s documents. In 2015, 375 standard stations were sampled on the eastern Bering Sea shelf. |
