Using stable isotopes to infer stock-specific high-seas distribution of maturing sockeye salmon in the North Pacific.

ABSTRACT: The stock-specific distribution of maturing salmon in the North Pacific has been a persistent information gap that has prevented us from determining the ocean conditions experienced by individual stocks. This continues to impede understanding of the role of ocean conditions in stock-specific population dynamics. We assessed scale archives for 17 sockeye salmon (Oncorhynchus nerka) stocks covering the entire North Pacific, from the Columbia River (Washington State and British Columbia) to Kamchatka Peninsula (Russia), to infer salmon locations during their last growing season before returning to their spawning grounds. The approach used, first pioneered in salmon stocks in the Atlantic, relies on the relationship between temporal changes in δ¹³C in salmon scales and sea su

SUBMITTER: Espinasse B 

PROVIDER: S-EPMC7713939 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature