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首页> 美国政府科技报告 >Conceptual Plans for Qualitatively and Quantitatively Improving Artificial Propagation of Anadromous Salmonids in the Columbia River Basin
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Conceptual Plans for Qualitatively and Quantitatively Improving Artificial Propagation of Anadromous Salmonids in the Columbia River Basin

机译：定性和定量改善哥伦比亚河流域洄游鲑鱼人工繁殖的概念方案

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Long-range planning is required to identify the resources and actions needed to produce additional hatchery fish and increase hatchery effectiveness. Given typical lead times, one can expect about 10--15 years to lapse between the time BPA requests authority for capital projects and the time the first adult fish return via that project. In this process, it is critical to establish ''proximate,'' numerical fish production goals for planning purposes. The species of fish and the location of their production can be generalized for these purposes, albeit, these data must be refined into discrete, specific subbasin plans. For purpose of this report, generalized scenarios are used to identify possible solutions and their costs. For planning purposes a numerical goal for total salmon and steelhead production in the Columbia River Basin was set arbitrarily at 10 million adults per year. Given that the full propagation potential for wild/natural salmon/steelhead is about 3.5 million adults, and given that the current hatchery production of salmon/steelhead is about 2.5 million adults per year, therefore, hatcheries might need to produce as much as 4 million more adults per year (depending on the benefits of improved mainstem passage, and habitat restoration). 2 figs., 4 tabs. (ERA citation 14:005927)

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