![]() Of course, scientists do not make such tradeoffs, but they should play an important, even essential, role as sources of impartial scientific information and assessments. the myriad competing public policy priorities such as flood control, energy production, agriculture, etc.) are decisions that society continues to make either explicitly or implicitly. hatchery origin) salmon runs and/or sustaining fishing (vs. Nor has the trend been plainly upward.ĭeciding how important preserving wild (vs. Interestingly, the current low overall salmon abundance has not shown an obvious continuing downward trend for several decades. Still, the overall downward trajectory has been apparent over the long term (150 years). Currently, the annual harvest (i.e., from commercial, recreational, and tribal fishing) is strongly dominated by fish of hatchery origin.Įven without major human intervention, salmon runs (whenever I refer to “salmon,” I include steelhead) are notoriously variable annually and decadally. ![]() About 140 million ocean-going juvenile salmon and steelhead are released annually from fish hatcheries in the Columbia River Basin. Even the total (wild plus hatchery) current salmon and steelhead run is now less than 10-20% of the pre-1850s levels. Basin-wide, wild salmon and steelhead are roughly 2-4% of their pre-1850s levels. ![]() Wild (non-hatchery origin) salmon and steelhead in the Columbia River Basin are not doing well. ![]() What Would Happen to Columbia River Basin Wild Salmon Runs If Hatchery Stocking and Fishing Ended? Published in an Oregon State University Blog, September 7. ![]()
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