Helping Pacific Salmon Survive the Impact of Climate Change on Freshwater Habitats PDF Download
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Author: Marc Nelitz
Publisher:
ISBN: 9781897110331
Category : Fishery management
Languages : en
Pages : 122
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Book Description
Author: Marc Nelitz
Publisher:
ISBN: 9781897110331
Category : Fishery management
Languages : en
Pages : 122
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Book Description
Author: Marc Nelitz
Publisher:
ISBN: 9781897110379
Category : Fishes
Languages : en
Pages : 67
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Book Description
Author: Richard James Beamish
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 52
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Book Description
Author: Deanna J. Stouder
Publisher: Springer Science & Business Media
ISBN: 1461563755
Category : Science
Languages : en
Pages : 681
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Book Description
The symposium "Pacific Salmon and Their Ecosystems: Status and Future Options',' and this book resulted from initial efforts in 1992 by Robert J. Naiman and Deanna J. Stouder to examine the problem of declining Pacific salmon (Oncorhynchus spp.). Our primary goal was to determine informational gaps. As we explored different scientific sources, state, provincial, and federal agencies, as well as non-profit and fishing organizations, we found that the information existed but was not being communicated across institutional and organizational boundaries. At this juncture, we decided to create a steering committee and plan a symposium to bring together researchers, managers, and resource users. The steering committee consisted of members from state and federal agencies, non-profit organizations, and private industry (see Acknowledgments for names and affiliations). In February 1993, we met at the University of Washington in Seattle to begin planning the symposium. The steering committee spent the next four months developing the conceptual framework for the symposium and the subsequent book. Our objectives were to accomplish the following: (1) assess changes in anadromous Pacific Northwest salmonid populations, (2) examine factors responsible for those changes, and (3) identify options available to society to restore Pacific salmon in the Northwest. The symposium on Pacific Salmon was held in Seattle, Washington, January 10-12, 1994. Four hundred and thirty-five people listened to oral presentations and examined more than forty posters over two and a half days. We made a deliberate attempt to draw in speakers and attendees from outside the Pacific Northwest.
Author: Bahri, T., Vasconcellos, M., Welch, D.J., Johnson, J., Perry, R.I., Ma, X. & Sharma, R.
Publisher: Food & Agriculture Org.
ISBN: 9251338906
Category : Technology & Engineering
Languages : en
Pages : 301
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Book Description
This report aims to accelerate climate change adaptation implementation in fisheries management throughout the world. It showcases how flexibility can be introduced in the fisheries management cycle in order to foster adaptation, strengthen the resilience of fisheries, reduce their vulnerability to climate change, and enable managers to respond in a timely manner to the projected changes in the dynamics of marine resources and ecosystems. The publication includes a set of good practices for climate-adaptive fisheries management that have proven their effectiveness and can be adapted to different contexts, providing a range of options for stakeholders including the fishing industry, fishery managers, policymakers and others involved in decision-making. These good practices were linked to one or more of the three common climate-related impacts on fisheries resources: distributional change; productivity change; and species composition change. Therefore, these three impacts can serve as practical entry points to guide decision-makers in identifying good practice adaptation measures suitable for their local contexts. These good practices are based upon transferable experiences and lessons learned from the thirteen case studies across the globe and hopefully will contribute to greater uptake and implementation of climate-adaptive fisheries management measures on the ground.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309053250
Category : Technology & Engineering
Languages : en
Pages : 473
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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: National Research Council (U.S.). Committee on Water Resources Management, Instream Flows, and Salmon Survival in the Columbia River Basin
Publisher: National Academy Press
ISBN:
Category : Business & Economics
Languages : en
Pages : 274
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Book Description
Book News, Inc., Portland, OR (booknews.com).
Author: Daniel L. Bottom
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 396
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Book Description
Author: Jennifer Rhiannon Griffiths
Publisher:
ISBN:
Category : Ecogeomorphology
Languages : en
Pages : 153
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Book Description
Freshwater ecosystems are not only the source of a disproportionate number of ecosystem services given their relative area on the planet, but they are also highly sensitive to anthropogenic impacts including climate change. Landscape heterogeneity provides a filter for regional climate forcing in aquatic systems and provides the context in which the biological components of ecosystems will interact with climate change. I used the Chignik watershed, Alaska as a case study in which to explore the response of juvenile sockeye salmon (Oncorhynchus nerka) growth and body condition to differences across habitats and variation in climate. Furthermore, I investigated the interaction of climate change and geomorphic evolution and its effects on juvenile sockeye salmon habitat and growth. I used genetic tools to assess individual performance of sockeye salmon among connected freshwater habitats. I found that individual performance converged on habitat productivity rather than being determined by genetic origin. I investigated the effects of climate variability on juvenile salmon growth among lake habitats using 40 years of freshwater growth data from scales. Growth showed a coherent response to climate variables affecting growing season duration but opposing responses to growing season temperatures. This indicated that different lake habitats not only filter regional climate differently but that this leads to differences in the biological response. Juvenile sockeye salmon length data over a similar time frame indicated that temperature had a greater effect on growth than sockeye density. Finally, I assessed the relative importance of air temperature, lake volume and tributary for lake thermal regimes and juvenile sockeye salmon growth. Increases in lake volume had little effect on lake thermal regimes which were highly sensitive to lake temperature. Future increases in air temperature will likely reduce growth of juvenile sockeye although maintaining tributary connectivity is important to reducing the effects of air temperature. Because uncertainty exists in how freshwater ecosystems will respond to climate change preserving networks of heterogeneous habitat may be critical to supporting ecosystem resilience. Intact ecosystems provide an opportunity to evaluate the relative importance of climate, geomorphology and connectivity for salmon populations and inform the management and restoration of impacted landscapes.
Author:
Publisher:
ISBN:
Category : Fishery conservation
Languages : en
Pages : 72
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Book Description
