Return to the River: Restoring Salmon Back to the Columbia RiverRichard N. Williams Elsevier, 21 нояб. 2005 г. - Всего страниц: 720 Return to the River will describe a new ecosystem-based approach to the restoration of salmon and steelhead populations in the Columbia River, once one of the most productive river basins for anadromous salmonids on the west coast of North America. The approach of this work has broad applicability to all recovery efforts throughout the northern hemisphere and general applicability to fisheries and aquatic restoration efforts throughout the world. The Pacific Northwest is now embroiled in a major public policy debate over the management and restoration of Pacific salmon. The outcome of the debate has the potential to affect major segments of the region's economy - river transportation, hydroelectric production, irrigated agriculture, urban growth, commercial and sport fisheries, etc. This debate, centered as it is on the salmon in all the rivers, has created a huge demand for information. The book will be a powerful addition to that debate.
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... fish passage and transportation engineering. Return to the River suggested that the whole approach to salmon recovery needed to be redirected and used as evidence the fact that after almost a century of application, the engineering ...
... passage and hatcheries. Those two issues accounted for the majority (approximately 75-80%) of the Bonneville Power Administration's and the Council's Fish and Wildlife Program annual expenditures (~$450 million) to support fish and ...
... fish passage facilities and blocked access to 2,240 kilometers of highly productive salmon habitat in the upper Columbia River. Because of the lack of access to habitat above Grand Coulee, fish passage facilities were deemed unnecessary ...
... passage (Figure 1.10). When most of the dams were constructed, little thought was given to downstream passage of juvenile fish. However, studies by the National Marine Fisheries Service in the 1970s pointed to severe mortality to ...
... fish recovery efforts in the Columbia River are structured by three legal ... fish and wildlife recovery in the Columbia Basin represent the states composing the ... passage facilities at hydroelectric projects and funding for federal ...
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Return to the River: Restoring Salmon to the Columbia River Richard Nicholas Williams Недоступно для просмотра - 2006 |