North Pacific Anadromous Fish Commission

Technical Report 11

Table of Contents

Climate Change and Pacific Salmon Productivity on the Russian Far East

Authors:
Alexander V. Bugaev, Oleg B. Tepnin, and Vladimir I. Radchenko

Abstract Excerpt:
Climate change impact is a mainstream topic in Pacific salmon stock dynamics research. Numerous studies analyze correlations of some salmon species or stock abundance conditions with one or another climate index. Meanwhile, it is evident that no one factor impacts salmon or their environment separately from other elements of the salmon ecosystem. To understand the importance of the contributions of the main physical elements into changing environmental conditions of salmon ecosystems in the North Pacific Ocean, we tried to evaluate correlations between commercial catches of several salmon species with the most popular climate indices. These indices characterize large-scale meteorological, oceanographic, and cosmo-physical processes defining the Earth’s climate. Climate change impacts on Pacific salmon (pink, chum, and sockeye) productivity was assessed based on long-term (1971–2015) fisheries statistics and dynamics of 18 climate indices using stepwise multivariate regression analysis. Three regional stock groups were analyzed: Eastern Kamchatka and Chukotka (BPG), Western Kamchatka and continental coast (NOG), and Sakhalin, Kuriles, Amur River, and Primorye (SOG).

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DOI:
https://doi.org/10.23849/npafctr11/73.79

Citation

Bugaev, A.V., O.B. Tepnin, and V.I. Radchenko.  2018.  Climate change and Pacific salmon productivity on the Russian Far East.  N. Pac. Anadr. Fish Comm. Tech. Rep. 11: 73–79.  https://doi.org/10.23849/npafctr11/73.79