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.
|
Результаты поиска по книге
Результаты 1 – 5 из 35
... artificial propagation in the 1840s (Fry 1854; discussed more fully in Chapter 8 of this volume). Fish culture promised to replace the inefficiencies of nature with a fully controllable system that would maintain and enhance the supply ...
... artificial propagation of salmon in hatcheries has been a major technological solution to the problem of salmon depletion for over a century (Lichatowich 1999). At a very broad level, this analysis suggests that the cause of the problem ...
... artificial propagation and technology to improve the passage of juveniles and adults past the mainstem dams (Figure 2.7)—are based on assumptions in the implied conceptual foundation that have low scientific support (assumptions 2s, 3s ...
... artificial propagation of salmon, observed: Table 4.1 The Continuum of population richness in anadromous and 102 Williams et al.
... Propagation Company, constructed the first hatchery on the Clackamas River. The hatchery program grew rapidly and remained an important management activity, even though there was little evidence that artificial propagation was in fact ...
Другие издания - Просмотреть все
Return to the River: Restoring Salmon to the Columbia River Richard Nicholas Williams Недоступно для просмотра - 2006 |