Historical Trends of Fisheries and Stock Condition of Pacific Salmon in Russia
نویسنده
چکیده
At the present time, the main pink salmon and sockeye salmon stocks are in good condition on the Russian far east. However, pink stocks have tended to decrease in recent years. Wild stocks of chum salmon are currently in poor condition in many far-eastern regions, except for those of the north Okhotsk Sea coast and Okhotsk region. We do not expect a noticeable increase in the near future. There are abundant Pacific salmon stocks that are under intensive exploitation on the whole coast of Russian far east. In the long-term, the dynamics of these stocks are mainly determined by variability of global environmental conditions. Climate and related oceanographical effects determine general trends in Pacific salmon catches, although the trend can be strengthened or slowed by management of harvest and the releases of hatchery fry. At present, only the dynamics of the catch of salmon can be used as a quantitative indicator of long-term salmon stock conditions. Sometimes the coincidence of catch and salmon stock condition may not be exact.
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