Results of the 2011 Eastern Bering Sea Continental Shelf Bottom Trawl Survey of Groundfish and Invertebrate Fauna.

摘要

From May to August 2011, the Resource Assessment and Conservation Engineering Division, Alaska Fisheries Science Center National Oceanic and Atmospheric Administration, National Marine Fisheries Service conducted its 30th annual eastern Bering Sea (EBS) continental shelf bottom trawl survey of groundfish and invertebrate fauna. The stern trawlers FV Alaska Knight (43.5-m) and FV Aldebaran (40-m) were chartered to sample this survey area. Demersal populations of fishes and invertebrates were sampled by trawling for 30 minutes at stations centered within a stratified systematic grid, each grid cell measuring 37.04 x 37.04 km (20 x 20 nmi). All 376 standard survey stations were successfully sampled. At each of these stations, species composition of the catch was determined, and length distributions and age structure samples were collected from ecologically and commercially important species.