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A review of potential conservation and fisheries benefits of breaching four dams in the Lower Snake River(Washington,USA)

引用

Water Biology and Security 2022年第2期1卷 10-22页

作者： Adam J.Storch Howard A.Schaller Charles E.Petrosky Robert L.Vadas Jr. Benjamin J.Clemens Gary Sprague Norman Mercado-Silva brett Roper Michael J.Parsley Edward Bowles Robert M.Hughes Jay A.Hesse Oregon Department of Fish and Wildlife Ocean Salmon and Columbia River Program17330 Southeast Evelyn StreetClackamasOR 97015USA U.S.Fish and Wildlife Service 911 Northeast 11th AvenuePortlandOR 97232USA Idaho Department of Fish and Game 600 South Walnut StreetBoiseID 83707USA Unaffiliated OlympiaWAUSA Oregon Department of Fish and Wildlife Corvallis Research Lab28655 Hwy 34CorvallisOR 97333USA National Marine Fisheries Service 650 Capitol MallSacramentoCA 95814USA Centro de Investigacion en Biodiversidad y Conservacion Universidad Autonoma del Estado de MorelosAv.Universidad 1001Col.ChamilpaC.P.62209CuernavacaMorelosMexico National Stream and Aquatic Ecology Center U.S.Forest Service860 North 1200 EastLoganUT 84321USA Independent Fisheries Consultant 191 Sooter RoadUnderwoodWA 98651USA Oregon Department of Fish and Wildlife 4034 Fairview Industrial Drive SoutheastSalemOR 97302USA Amnis Opes Institute 2895 Southeast Glenn StreetCorvallisOR 97333USA Department of Fisheries Wildlife&Conservation Sciences104 Nash HallCorvallisOR 97331USA Nez Perce Tribe Department of Fisheries Resources Management 120 Beaver GradeLapwaiID 83540USA

Abundances of important and imperiled fishes of the Snake River Basin continue to *** assessed the rationale for breaching the four lower Snake River Basin dams to prevent complete loss of these fishes,and to maximize their likelihood of *** summarize the science surrounding Sockeye Salmon(Oncorhynchus nerka),Chinook Salmon(***),steelhead(***),Bull Trout(Salvelinus confluentus),White Sturgeon(Acipenser transmontanus),and Pacific Lamprey(Entosphenus tridentatus).From this,we drew ten conclusions:(1)development of the Columbia River System(including the Snake River Basin)has converted mainstem rivers into reservoirs,altering fish behavior and survival;(2)most populations currently record their lowest abundance;(3)the Columbia River System dams reduce productivity of diadromous fishes in the highest-quality spawning grounds that could buffer against future climate dynamics;(4)past actions have done little to reduce impacts or precipitate recovery;(5)the Columbia River System constrains survival and productivity of salmon,steelhead and Bull Trout;(6)Snake River Basin salmon and steelhead remain at high extinction risk;(7)eliminating migration impediments and improving mainstem habitats are essential for maintaining genetic diversity and improving Bull Trout persistence;(8)the lower Snake River Basin dams preclude passage of adult White Sturgeon,constraining gene flow and recruitment;(9)the lower Snake River Basin dams impede dramatically passage of adult and juvenile Pacific Lamprey,and(10)Snake River Basin Pacific Lamprey is at high risk of *** the four lower Snake River Basin dams is an action likely to prevent extirpation and extinction of these *** from the Columbia River System can inform conservation in other impounded rivers.

关键词： Bull trout Impoundment Pacific lamprey Salmon Steelhead White sturgeon

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