Hatchery Assessment Report, December 31, 2004, Dungeness - Sol Duc Complex PDF Download
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Author: Bogden Engineering
Publisher:
ISBN:
Category : Building inspection
Languages : en
Pages :
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Author: Bogden Engineering
Publisher:
ISBN:
Category : Building inspection
Languages : en
Pages :
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Book Description
Author: Bogden Engineering
Publisher:
ISBN:
Category : Building inspection
Languages : en
Pages :
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Book Description
Author: Jeffrey J. Duda
Publisher:
ISBN:
Category : Coastal ecology
Languages : en
Pages : 276
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Author:
Publisher:
ISBN:
Category : Fishery management
Languages : en
Pages : 118
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Book Description
Author: Bella S. Galil
Publisher: Springer Science & Business Media
ISBN: 9400705913
Category : Science
Languages : en
Pages : 714
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Book Description
In The Wrong Place: Alien Marine Crustaceans - Distribution, Biology And Impacts provides a unique view into the remarkable story of how shrimps, crabs, and lobsters – and their many relatives – have been distributed around the world by human activity, and the profound implications of this global reorganization of biodiversity for marine conservation biology. Many crustaceans form the base of marine food chains, and are often prominent predators and competitors acting as ecological engineers in marine ecosystems. Commencing in the 1800s global commerce began to move hundreds – perhaps thousands – of species of marine crustaceans across oceans and between continents, both intentionally and unintentionally. This book tells the story of these invasions from Arctic waters to tropical shores, highlighting not only the importance and impact of all prominent crustacean invasions in the world's oceans, but also the commercial exploitation of invasive crabs and shrimps. Topics explored for the first time in one volume include the historical roots of man's impact on crustacean biogeography, the global dispersal of crabs, barnacle invasions, insights into the potential scale of tropical invasions, the history of the world's most widely cultured shrimp, the invasive history and management of red king crabs in Norway, Chinese mitten crabs in England, and American blue crabs in Europe, the evolutionary ecology of green crabs, and many other subjects as well, touching upon all ocean shores.
Author: Jonathan Dewald
Publisher:
ISBN: 9780684312002
Category :
Languages : en
Pages : 566
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Author: National Research Council
Publisher: National Academies Press
ISBN: 0309176204
Category : Technology & Engineering
Languages : en
Pages : 472
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Book Description
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 : 448
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Book Description
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: Roderick L. Haig-Brown
Publisher: Skyhorse Publishing, Inc.
ISBN: 1629140953
Category : Sports & Recreation
Languages : en
Pages : 197
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Book Description
One of the most prolific fly-fishing writers of the twentieth century, Roderick L. Haig-Brown continues his “seasons” cycle with Fisherman’s Spring, a book that is as much about the deep philosophical aspects of fly fishing as it is about fly fishing itself. Readers will learn about the abundance of spring life in the streams of British Columbia while also being treated to Haig-Brown’s thoughtful musings and ideas about the rewards of fly fishing streams. Chapters readers will encounter include: Spring Defined Early Cutthroat Lakes Fly Types The Secret Life Fishing and the Common Man On Wading Fishermen and Forestry Fishing and Milkmaids The Forecast Recognizing Birds Putting Fish Back A Boy and a Fish Pole And many more Discover within these pages how fly fishing can enrich life and bring joy to every fisher. Both novices and experts alike will find a wealth of knowledge in Fisherman’s Spring. Originally published in 1964, Fisherman’s Fall brings a unique perspective to the world of fall fishing. In the preface, Robert L. Haig-Brown ruminates on the attempts to preserve the salmon and trout in the rivers of British Columbia. What we know could save them, yet what we do contradicts that knowledge. Gaining the knowledge in this book will help fishers learn the nature of the fish and might even inspire some to contribute to their preservation. Fisherman’s Fall gives fishers all the tools to become adept at fishing the rivers of British Columbia as well as firsthand knowledge of the fish of those rivers and their habits. In fabulous prose, readers will discover the unique fishing facts and techniques that accompany the fall season, differences between salmon in salt water and fresh water, the ocean years of salmon, the nature of estuaries, steelhead mysteries, and what makes an ideal stream. Besides gathering wise information, readers get to glimpse the inner thoughts of a fisherman in the chapters of Haig-Brown’s own thoughts while fishing. These wise words will speak to any fisher, and they will even speak to those who have never been on a river. Combining angling advice and inner reflection, this book is a must-have for fishermen and fisherwomen of all ages. Skyhorse Publishing is proud to publish a broad range of books for fishermen. Our books for anglers include titles that focus on fly fishing, bait fishing, fly-casting, spin casting, deep sea fishing, and surf fishing. Our books offer both practical advice on tackle, techniques, knots, and more, as well as lyrical prose on fishing for bass, trout, salmon, crappie, baitfish, catfish, and more. While not every title we publish becomes a New York Times bestseller or a national bestseller, we are committed to publishing books on subjects that are sometimes overlooked by other publishers and to authors whose work might not otherwise find a home.
Author: Xanthippe Augerot
Publisher:
ISBN:
Category : History
Languages : en
Pages : 174
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Book Description
"State of the Salmon, a joint program of Wild Salmon Center and Ecotrust."
