2005 bottom trawl survey of the eastern Bering Sea continental shelf
By: compilers, Robert Lauth, Erika Acuna ; Bering Sea Subtask, Erika Acuna ... [et al.].
Contributors: Acuna, Erika.; Lauth, Robert.; Alaska Fisheries Science Center (U.S.). Resource Assessment and Conservation Engineering Division.
Series: AFSC processed report -- 2007-01.
Publisher: Resource Assessment and Conservation Engineering Division, Alaska Fisheries Science Center
Published: 2007
Place of publication: Seattle, Wash
Language: eng
Number of pages: 164
Subjects: Trawls and trawling -- Catch effort -- Bering Sea -- Observations.; Trawls and trawling -- Bering Sea -- Observations.; Fish communities -- Bering Sea -- Observations.; Fish stock assessment -- Bering Sea.; Marine fishes -- Size -- Bering Sea -- Observations.
Genres: Observations.
Other titles: Bottom trawl survey of the eastern Bering Sea continental shelf.
Description: The Resource Assessment and Conservation Engineering Division of the Alaska Fisheries Science Center conducts annual bottom trawl surveys to monitor the condition of the demersal fish and crab stocks of the eastern Bering Sea continental shelf. The standard study area, surveyed each year since 1979, encompasses a major portion of the eastern Bering Sea shelf between the 20-m and the 200-m isobaths and from the Alaska Peninsula north to approximately the latitude of St. Matthew Island (60⁰50'N). In 2005, two chartered trawlers, the 40-m FV Arcturus and the 40-m FV Aldebaran, again surveyed this area.  Demersal populations were sampled by trawling for 30 minutes at stations centered in a 20 x 20 nautical mile grid covering the survey area. At each station, species composition of the catch was determined. Length distributions and age structure samples were collected from ecologically and commercially important species.  Three-hundred and fifty-three of the 356 standard survey stations were sampled. Walleye pollock, yellowfin sole, and rock sole dominated fish biomass estimates (10.1 metric tons combined). A total of 219 invertebrate species were identified in the survey.  Survey results presented in this report include relative fishing powers of the survey vessels, abundance estimates for fish and invertebrates, geographic distributions of important fish species and size composition of principal fish species. Surface and bottom temperatures recorded at each sampling station are also presented.  Appendices provide station data, species listings, and detailed results of analyses of abundance and biological data of the sampled populations.
Notes: "January 2007."

Includes bibliographical references (p. 101-103).

Also available in electronic format via Internet.