Groundfish Bottom Trawl Surveys

Bottom Trawl Surveys

The AFSC Groundfish Assessment Program (GAP) regularly conducts bottom trawl surveys to assess the condition of groundfish and shellfish stocks in Alaskan marine waters.

The surveys range from southeastern Alaska north to the Eastern Bering Sea shelf and slope and to the westernmost Aleutian Islands.

Bottom trawl surveys for groundfish and king and Tanner crabs occur annually in the eastern Bering Sea in cooperation with the AFSC Shellfish Assessment Program. Biennial bottom trawl surveys are conducted in the Aleutian Islands (even years), Gulf of Alaska (odd years), and along the eastern Bering Sea slope (even years).

Beginning in 2017, biennial surveys will occur in the Northern Bering Sea. Bottom trawl surveys are occasionally conducted in the Chukchi and Beaufort Seas. AFSC's Auke Bay Laboratory also conducts longline surveys of sablefish abundance are conducted throughout Alaskan waters.

*Featured Items*

Results of the 2013 Eastern Bering Sea Continental Shelf Bottom Trawl Survey Go there >>

Data Report: 2015 Gulf of Alaska Bottom Trawl Survey Go there >>

Data report: 2012 Aleutian Islands bottom trawl survey Go there >>

Results of the 2012 Eastern Bering Sea Upper Continental Slope Survey Go there >>

Recent Poster Presentations, Publications, Reports & Activities

ZIMMERMANN, M., M. M. PRESCOTT, and P. J. HAEUSSLER. 2019. Bathymetry and geomorphology of Shelikof Strait and the Western Gulf of Alaska. Geosciences. 9:409. https://doi.org/10.3390/geosciences9100409 Online.
McGOWAN, D. W., J. K. HORNE, J. T. THORSON and M. ZIMMERMANN. 2019. Influence of environmental factors on capelin distributions in the Gulf of Alaska. Deep Sea Res. II. 165: 238-254. https://doi.org/10.1016/j.dsr2.2017.11.018 Online.
PIRTLE, J. L., S. K. SHOTWELL, M. ZIMMERMANN, J. A. REID and N. GOLDEN. 2019. Habitat suitability models for groundfish in the Gulf of Alaska. Deep Sea Res. II. 165:303-321. https://doi.org/10.1016/j.dsr2.2017.12.005 Online.
ZIMMERMANN, M. 2019. Comparison of the physical attributes of the central and eastern Gulf of Alaska integrated ecosystem research program inshore study sites. Deep Sea Res. II 165:280-291. https://authors.elsevier.com/a/1ZbS-3Ruf15fNK Online.
Using Triggered Cameras to Determine Fish Behavior in Rocky, Untrawlable Areas
By: KRESIMIR WILLIAMS, CHRIS ROOPER, MIKE LEVINE, ALEX De ROBERTIS
Conference: Western Groundfish Conference (19th), Newport, OR, Feb 2016
(2016 poster, .pdf, 468 KB) Online.
Introducing the Working Group on Maturity Assessment and Reproductive Variability of Life Stages
By: SUSANNE McDERMOTT, SANDI NEIDETCHER, CHRISTINA CONRATH, PAUL SPENCER
Conference: Western Groundfish Conference (19th), Newport, OR, Feb 2016
(2016 poster, .pdf, 1.85 MB) Online.

See the poster and publications databases for additional listings.

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