The global abundance of Pacific salmon in 2020 was the lowest since 1982, according to new data released by the North Pacific Anadromous Fish Commission.
That’s despite a record number of hatchery fish being released the year before in 2019, which suggests ocean conditions — temperatures and abundance of nutrients, zooplankton and other food sources — are behind low ocean survival rates.
The commission measures abundance of Pacific salmon based on commercial catch reporting from the five member countries: The U.S., Russia, Japan, Canada and South Korea.
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