Lyle Falls Fish Passage Project PDF Download

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 108

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Author: National Research Council
Publisher: National Academies Press
ISBN: 0309053250
Category : Technology & Engineering
Languages : en
Pages : 473

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The importance of salmon to the Pacific Northwestâ€"economic, recreational, symbolicâ€"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 runsâ€"and still the populations decline. In this new volume a committee with diverse expertise explores the complications and conflicts surrounding the salmon problemâ€"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 geographyâ€"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 activitiesâ€"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 issueâ€"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: Carl J. Walters
Publisher: Princeton University Press
ISBN: 0691214638
Category : Nature
Languages : en
Pages : 424

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Quantitative modeling methods have become a central tool in the management of harvested fish populations. This book examines how these modeling methods work, why they sometimes fail, and how they might be improved by incorporating larger ecological interactions. Fisheries Ecology and Management provides a broad introduction to the concepts and quantitative models needed to successfully manage fisheries. Walters and Martell develop models that account for key ecological dynamics such as trophic interactions, food webs, multi-species dynamics, risk-avoidance behavior, habitat selection and density-dependence. They treat fisheries policy development as a two-stage process, first identifying strategies for varying harvest in relation to changes in abundance, then finding ways to implement such strategies in terms of monitoring and regulatory procedures. This book provides a general framework for developing assessment models in terms of state-observation dynamics hypotheses, and points out that most fisheries assessment failures have been due to inappropriate observation model hypotheses rather than faulty models for ecological dynamics. Intended as a text in upper division and graduate classes on fisheries assessment and management, this useful guide will also be widely read by ecologists and fisheries scientists.

Author: Jim Lichatowich
Publisher:
ISBN:
Category : History
Languages : en
Pages : 346

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"Fundamentally, the salmon's decline has been the consequence of a vision based on flawed assumptions and unchallenged myths.... We assumed we could control the biological productivity of salmon and 'improve' upon natural processes that we didn't even try to understand. We assumed we could have salmon without rivers." --from the introduction From a mountain top where an eagle carries a salmon carcass to feed its young to the distant oceanic waters of the California current and the Alaskan Gyre, salmon have penetrated the Northwest to an extent unmatched by any other animal. Since the turn of the twentieth century, the natural productivity of salmon in Oregon, Washington, California, and Idaho has declined by eighty percent. The decline of Pacific salmon to the brink of extinction is a clear sign of serious problems in the region. In Salmon Without Rivers, fisheries biologist Jim Lichatowich offers an eye-opening look at the roots and evolution of the salmon crisis in the Pacific Northwest. He describes the multitude of factors over the past century and a half that have led to the salmon's decline, and examines in depth the abject failure of restoration efforts that have focused almost exclusively on hatcheries to return salmon stocks to healthy levels without addressing the underlying causes of the decline. The book: describes the evolutionary history of the salmon along with the geologic history of the Pacific Northwest over the past 40 million years considers the indigenous cultures of the region, and the emergence of salmon-based economies that survived for thousands of years examines the rapid transformation of the region following the arrival of Europeans presents the history of efforts to protect and restore the salmon offers a critical assessment of why restoration efforts have failed Throughout, Lichatowich argues that the dominant worldview of our society -- a worldview that denies connections between humans and the natural world -- has created the conflict and controversy that characterize the recent history of salmon; unless that worldview is challenged and changed, there is little hope for recovery. Salmon Without Rivers exposes the myths that have guided recent human-salmon interactions. It clearly explains the difficult choices facing the citizens of the region, and provides unique insight into one of the most tragic chapters in our nation's environmental history.

Author: V.P. Singh
Publisher: Springer Science & Business Media
ISBN: 9401103933
Category : Science
Languages : en
Pages : 284

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Water is vital to life, maintenance of ecological balance, economic development, and sustenance of civilization. Planning and management of water resources and its optimal use are a matter of urgency for most countries of the world, and even more so for India with a huge population. Growing population and expanding economic activities exert increasing demands on water for varied needs--domestic, industrial, agricultural, power generation, navigation, recreation, etc. In India, agriculture is the highest user of water. The past three decades have witnessed numerous advances as well as have presented intriguing challenges and exciting opportunities in hydrology and water resources. Compounding them has been the growing environmental consciousness. Nowhere are these challenges more apparent than in India. As we approach the twenty first century, it is entirely fitting to take stock of what has been accomplished and what remains to be accomplished, and what accomplishments are relevant, with particular reference to Indian conditions.

Author: Albert G. Spalding
Publisher: Jazzybee Verlag
ISBN: 3849658724
Category : Sports & Recreation
Languages : en
Pages : 466

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This book is in great demand by baseball enthusiasts. Having been connected with every department of the game from player to magnate, Mr. Spalding has contributed a very important work to the game's history. As the invincible pitcher of the Boston Club, previous to the formation of the National League, his book of so many pages is an interesting record of events dating from the beginning of the great American pastime. It is not exactly a history of the game, but deals largely with incidents during the author's career, who was a player in the late 1860s and early 1870s, and helped organize the National League in 1876. One chapter, devoted to sundry topics, gives an account of the sale of the immortal "King Kelly," the original "$10,000 beauty," by Chicago to the Boston Club in the late 1880s. Other Chapters are devoted to the literature of the game, quoting several instances of the baseball paragrapher's art and also specimens of the distinct poetry of the pastime, of which "Casey at the Bat" is probably the most widely known. The Cincinnati Red Stockings Mr. Spalding gives credit as being the pioneer professional organization. It was not, however, until 1871 that professional baseball playing, as recognized today, was instituted. Mr. Spalding shows how cricket could not do for Americans. He says it is suitable for the British temperament, but not for the Yankee hustling spirit. He also tells how he worked into the game through a one-handed catch when a small boy. To lovers of baseball, whose name is legion, and whose number increases yearly, this book comprises in itself a whole library of useful information.

Author: John E. Thorpe
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 462

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Author: Willis Horton Rich
Publisher:
ISBN:
Category : Salmon
Languages : en
Pages : 88

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Author: United States. Forest Service. Pacific Northwest Region
Publisher:
ISBN:
Category : Klickitat River (Wash.)
Languages : en
Pages :

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Author: Nancy J. Turner
Publisher: McGill-Queen's Native and Northern Series
ISBN: 9780773543805
Category : Science
Languages : en
Pages : 1106

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How knowledge of plants and environments has been applied and shared over centuries and millennia by Indigenous peoples.