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Alaska Stock Assessments

A variety of data are input into computer models to estimate population size and trends for fish, crabs and marine mammals generating a stock assessment report. Research surveys provide biological, ecological and environmental data. Independent fishery observers collect information on commercial fisheries catches. We also compile socio-economic data on fishing communities.

Scientists working on deck of research vessel

Groundfish Assessments

NOAA Fisheries is responsible for the management, conservation, and protection of living marine resource. Stock Assessment and Fishery Evaluation reports are conducted annually to support decision makers at the North Pacific Fishery Management Council regarding catch quota decisions. 

Marine Mammal Assessments

NOAA Fisheries annually prepares marine mammal stock assessment reports for all marine mammals in U.S. waters.

Shellfish Assessments

Each year we conduct a bottom trawl survey to assess the distribution and abundance of commercially important crab resources in the eastern Bering Sea. Periodic surveys are also conducted in the northern Bering Sea and Chukchi Sea. We collect biological information including sexual maturity, disease prevalence, condition, and size. We also regularly collaborate with the commercial fishing industry to improve our survey methods to produce the best estimates we can. This information is used for various studies on crab growth and reproduction and to help us estimate crab population size to better predict how many crab will be available to support future fisheries.

Additional Resources



2017 Alaska Fisheries Science Center Gulf of Alaska Shortraker Rockfish Stock Assessment

The SAFE report for the Gulf of Alaska (GOA) groundfish fisheries is compiled by the Plan Team for the Gulf of Alaska Groundfish FMP from chapters…


2017 Alaska Fisheries Science Center Aleutian Islands Shortraker Rockfish Stock Assessment in the Bering Sea and Aleutian Islands

The BSAI Groundfish FMP requires that a draft of the SAFE report be produced each year in time for the December meeting of the North Pacific Fishery…