On the use of the data of the anomaly of the water surface temperature in the western part of the northern pacific as a potential climatic predictor for predicting the number of Pacific salmon of Kamchatka
2021
Bugaev, A.V. | Feldman, M.G. | Tepnin, O.B. | Koval, M. V.
The paper presents an analysis of the relationship between the variability of sea surface temperature anomalies (SSTa) in the areas of autumn-winter migrations of young Pacific salmon from Eastern and Western Kamchatka and the dynamics of the number of catches of their producers. The series of observations includes the period 1971–2020. The SSTa data collection site covers the waters of the western part of the Bering Sea, the southern part of the Sea of Okhotsk and the northwestern part of the Pacific Ocean. The results of the studies showed that in the areas of mass feeding of juvenile pink salmon, chum salmon and sockeye salmon, the SSTa indicators have a stable relationship with the number of catches of these species. Most of the reliable relationships are indicated by moderate correlation coefficients at the level of r = 0,30–0,60. The pattern is observed for all salmon species in a significant part of the considered water area in the autumn period (September-October). In winter, the relationship is observed much less frequently. It is proposed to use the accumulated SSTa series for multidimensional modeling In addition, the promptly obtained SSTa data in the autumn period of the year preceding the year of fishing, will allow using this indicator as an indicator information characterizing the conditions of feeding of juvenile salmon
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