Status and Future of Spring Chinook Salmon in the Columbia River Basin--conservation and Enhancement PDF Download
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Author: Donn L. Park
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 146
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Book Description
Author:
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 130
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Book Description
Author: Donn L. Park
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 146
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 332
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Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 140
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Author: United States. General Accounting Office
Publisher:
ISBN:
Category : Endangered species
Languages : en
Pages : 44
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Author:
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 560
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Author:
Publisher:
ISBN:
Category : Fish hatcheries
Languages : en
Pages : 98
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Book Description
Author: Committee on Protection and Management of Pacific Northwest Anadromous Salmonids
Publisher: National Academies Press
ISBN: 0309556503
Category : Technology & Engineering
Languages : en
Pages : 473
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Book Description
The importance of salmon to the Pacific Northwest--economic, recreational, symbolic--is enormous. Generations ago, salmon were abundant from central California through Idaho, Oregon, and Washington to British Columbia and Alaska. Now they have disappeared from about 40 percent of their historical range. The decline in salmon numbers has been lamented for at least 100 years, but the issue has become more widespread and acute recently. The Endangered Species Act has been invoked, federal laws have been passed, and lawsuits have been filed. More than $1 billion has been spent to improve salmon runs--and still the populations decline. In this new volume a committee with diverse expertise explores the complications and conflicts surrounding the salmon problem--starting with available data on the status of salmon populations and an illustrative case study from Washington state's Willapa Bay. The book offers specific recommendations for salmon rehabilitation that take into account the key role played by genetic variability in salmon survival and the urgent need for habitat protection and management of fishing. The committee presents a comprehensive discussion of the salmon problem, with a wealth of informative graphs and charts and the right amount of historical perspective to clarify today's issues, including Salmon biology and geography--their life's journey from fresh waters to the sea and back again to spawn, and their interaction with ecosystems along the way. The impacts of human activities--grazing, damming, timber, agriculture, and population and economic growth. Included is a case study of Washington state's Elwha River dam removal project. Values, attitudes, and the conflicting desires for short-term economic gain and long-term environmental health. The committee traces the roots of the salmon problem to the extractive philosophy characterizing management of land and water in the West. The impact of hatcheries, which were introduced to build fish stocks but which have actually harmed the genetic variability that wild stocks need to survive. This book offers something for everyone with an interest in the salmon issue--policymakers and regulators in the United States and Canada; environmental scientists; environmental advocates; natural resource managers; commercial, tribal, and recreational fishers; and concerned residents of the Pacific Northwest.
Author: Nancy D. Gordon
Publisher: John Wiley & Sons
ISBN: 1118688171
Category : Technology & Engineering
Languages : en
Pages : 637
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Book Description
Since the publication of the first edition (1994) there have been rapid developments in the application of hydrology, geomorphology and ecology to stream management. In particular, growth has occurred in the areas of stream rehabilitation and the evaluation of environmental flow needs. The concept of stream health has been adopted as a way of assessing stream resources and setting management goals. Stream Hydrology: An Introduction for Ecologists Second Edition documents recent research and practice in these areas. Chapters provide information on sampling, field techniques, stream analysis, the hydrodynamics of moving water, channel form, sediment transport and commonly used statistical methods such as flow duration and flood frequency analysis. Methods are presented from engineering hydrology, fluvial geomorphology and hydraulics with examples of their biological implications. This book demonstrates how these fields are linked and utilised in modern, scientific river management. * Emphasis on applications, from collecting and analysing field measurements to using data and tools in stream management. * Updated to include new sections on environmental flows, rehabilitation, measuring stream health and stream classification. * Critical reviews of the successes and failures of implementation. * Revised and updated windows-based AQUAPAK software. This book is essential reading for 2nd/3rd year undergraduates and postgraduates of hydrology, stream ecology and fisheries science in Departments of Physical Geography, Biology, Environmental Science, Landscape Ecology, Environmental Engineering and Limnology. It would be valuable reading for professionals working in stream ecology, fisheries science and habitat management, environmental consultants and engineers.
Author:
Publisher:
ISBN:
Category : Fish culture
Languages : en
Pages : 620
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Book Description
