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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... yearling juvenile emigrants 2—3 must reach the estuary to successfully move from the freshwater to the marine phase of the life cycle. 4c. Yearling Chinook emigrants utilize the mainstem Snake and Columbia 2 Rivers primarily as an ...
... yearling stream-type (mostly spring) Chinook emigrated on the ascending limb of the spring runoff (March–May). Ocean-type (mostly fall) Chinook juveniles emigrated over a 10-month period (March–December), with the bulk of the juveniles ...
... Chinook (French and Wahle 1959; Fulton 1968; Mullan et al. 1992; Lichatowich and Mobrand 1995). Populations of spring Chinook with yearling life histories reproduced in headwater streams of subbasin tributaries. The decline of the ocean ...
... Chinook salmon throughout most months of the year. He attributed this to the ... yearling stream-type migrants (Lichatowich and Mobrand 1995). Inundation and ... Chinook salmon in the Columbia River Basin. Figure 3.13 Hanford Reach fall ...
... Chinook Salmon The geographic organization of Chinook salmon in the Columbia ... yearling life histories reproduced in headwater streams of subbasin ... Chinook spawning in mainstem reaches of the Columbia and Snake Rivers and the lower ...
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Return to the River: Restoring Salmon to the Columbia River Richard Nicholas Williams Недоступно для просмотра - 2006 |