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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... coho (O. kisutch), sockeye (O. nerka), and steelhead trout (O. mykiss) returned, as well as smaller numbers of chum (O. keta) and pink salmon (O. gorbuscha). Pre-development run size estimates of all salmon range from 6.2 million fish ...
... salmon under the Endangered Species Act. NOAA Fisheries first began to analyze the status of Snake River salmon ... coho salmon O. kisutch, declined sharply in the 1980s to become extinct some time prior to 1992 (Hassemer et al. 1996) ...
Restoring Salmon Back to the Columbia River Richard N. Williams. technological solutions to the massive habitat alteration in the mainstem and tributaries of ... coho salmon for within-hatchery matings. 2. The Existing Conceptual Foundation ...
... salmon and steelhead (the upper closed circular system) and returning adult salmon (the open fish ladder below the ... coho salmon for within-hatchery matings at the Chiwawa Satellite Hatchery in central Washington. Photo by R. N. ...
... salmon and lamprey; (b) species that move from one kind of freshwater habitat to another to spawn, such as the ... coho salmon, chum salmon, and steelhead trout), or both (e.g., sockeye salmon). Figure 3.5 An idealized view of the 3-D ...
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Return to the River: Restoring Salmon to the Columbia River Richard Nicholas Williams Недоступно для просмотра - 2006 |