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Seasonal dynamics for expected and actual catches of pink salmon on the northeastern and southeastern coasts of Sakhalin and on Iturup Island are compared for 2018–2023. The actual values differed from the expected ones on average by a factor of two. Large errors in the forecast were caused by both objective reasons (unaccounted random natural cases) and subjective reasons (inaccuracy of the primary data used in calculations).
Каев et al. (Wed,) studied this question.