Cyclic climate changes and major commercial stocks in the Arctic region ...

• Main Authors: Bulatov, O. A., Klyashtorin, L. B., Borisov, V. M.
• Format: Conference Object
• Language: unknown
• Published: ASC 2011 - Theme session J 2024
• Subjects: Fisheries and aquaculture; Ecosystem observation, processes and dynamics; Antarctic; Arctic; Antarc*; Arctic and Antarctic Research Institute; Arctic cod; Northeast Arctic cod
• Online Access: https://dx.doi.org/10.17895/ices.pub.25039136; https://ices-library.figshare.com/articles/conference_contribution/Cyclic_climate_changes_and_major_commercial_stocks_in_the_Arctic_region/25039136

No abstracts are to be cited without prior reference to the author.Long‐term dynamics of spring‐spawning herring and northeast Arctic cod recruitment is reported to be in line with the several main Arctic climatic indices, such as Arctic air surface temperature (Arctic dT) and mean temperature of 200‐m water column along the “Kola Meridian” section (Kola meridian dT). Variation in the herring stock recruitment is shown to be correlate with the Arctic dT and Kola meridian dT dynamics, although the cod recruitment follows these indices with a 8‐ to 10year lag. The Russian Arctic and Antarctic Research Institute (AARI) reports that for the last 100 years Arctic dT has displayed some 60‐year regular fluctuations with maxima in the 1940s and 2000s, and suggests a descending trend in the Arctic dT in the most recent 10–20 years. Thus, in the next 10 years, commercial herring stocks are likely to decrease, whereas the cod commercial stocks are likely to increase. The walleye pollock fishable biomass in the Bering ...