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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... migration route was replaced by elaborate systems to collect and transport juvenile fish around the dams, while fish ladders aided upstream migration of. 1. White, R. 1995. The Organic Machine: the Remaking of the Columbia River. Hill ...
... migration (Healey 1991). Stream and ocean life histories are major life history themes, but variation in juvenile migration patterns occurs within each theme (Figures 3.7 and 3.8; Chapter 6). For example, stream-type juvenile Chinook ...
... migration of juvenile Chinook salmon from tributaries progressively further upstream. Because the occurrence of the ... migrants (Lichatowich and Mobrand 1995). Inundation and isolation of alluvial habitats in the mainstem Columbia and ...
... migrating salmon, may have been a major contributor to the loss of the ocean-type life history (Lichatowich and Mobrand ... migration in the summer and fall months (CTUIR and ODFW 1990 [Umatilla River]; CTYIN, WDF, and WDW 1990 [Yakima ...
... migrations; (c) spawning habitat preferences; (d) emigration patterns; and (e) age and timing of spawning migration. The expression of many of these traits varies in response to environmental variation as well. For successful completion ...
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Return to the River: Restoring Salmon to the Columbia River Richard Nicholas Williams Недоступно для просмотра - 2006 |