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.
- Upstream
- Copyright
- Other Recent Reports of the Board on Environmental Studies and Toxicology
- Preface
- Contents
- Executive Summary
- STATUS OF SALMON POPULATIONS
- THE SALMON PROBLEM
- GENERAL CONCLUSION
- ENVIRONMENTAL FACTORS
- LIMITS ON SALMON PRODUCTION
- VALUES
- GENETICS AND CONSERVATION
- HABITAT LOSS AND REHABILITATION
- DAMS
- HATCHERIES
- FISHING
- INSTITUTIONAL CHANGE
- A SCIENTIFIC ADVISORY BOARD TO ADDRESS SALMON PROBLEMS
- AN APPROACH TO SOLVING THE SALMON PROBLEM
- THE FUTURE
- 1 Introduction
- THE SALMON PROBLEM
- COMPONENTS OF THE SYSTEM
- The Region
- The Salmon
- Evolutionary, Genetic, Ecological, and Spatial Units of Concern
- The People
- COMPONENTS OF THE PROBLEM
- Limits to Biological Production
- Institutions
- Knowledge
- APPROACHES
- 2 Salmon Geography and Ecology
- INTRODUCTION
- SALMON LIFE HISTORY AND DISTRIBUTION
- Anadromy
- Homing
- Semelparity
- Generalized Life Cycle
- Individual Species Distributions
- Pink Salmon
- Sockeye Salmon
- Chum Salmon
- Coho Salmon
- Chinook Salmon
- Steelhead Trout
- Cutthroat Trout
- PACIFIC NORTHWEST SALMON AREAS
- SALMON ECOLOGY IN RIVER BASINS
- Species Interactions
- Juvenile Adaptability
- Spawners' Effects on Streams
- Cautions
- SALMON ECOLOGY IN THE OCEAN
- Interdecadal Variation in Ocean Climate
- Density-Dependent Effects
- Larger Spatial and Temporal Scales
- 3 Human History and Influences
- HISTORICAL SETTING
- CULTURES AND TREATIES
- DECLINE OF THE BEAVER
- FISHING PRESSURES
- PROPAGATING FISH
- GRAZING RANGELANDS
- HARVESTING THE OLD GROWTH
- DAMMING THE NORTHWEST
- WATERING THE LAND
- ALTERING WETLANDS AND ESTUARIES
- SUMMARY AND CONCLUSIONS
- 4 Status of Salmon
- INTERPRETING HISTORICAL RECORDS
- THE STOCK CONCEPT
- RISK ASSESSMENT
- FRASER RIVER BASIN
- PUGET SOUND
- COLUMBIA RIVER BASIN
- Historical Trends
- Snake River
- Middle and Upper Columbia River
- Lower Columbia River
- COASTAL WASHINGTON, OREGON, AND CALIFORNIA
- WILLAPA BAY—A CASE STUDY
- 5 Values and Institutions
- INTRODUCTION
- INDIVIDUAL PREFERENCES AND PUBLIC VALUES
- HOW SALMON ARE VALUED
- Direct Regional Economic Value
- Indirect and Option Values
- Resource Values and Public Choice
- Value Over Time and Generations
- INSTITUTIONS AND VALUES
- "LORDS OF YESTERDAY"
- Technological Optimism
- Political Pluralism
- "PRINCES OF TODAY"?
- Public Trust and American Indian Rights
- Resource Planning
- The Federal Presence in Regional Stewardship: Changing Resource Values
- FISHERIES MANAGEMENT INSTITUTIONS
- Biodiversity and Endangered Species
- Compensation, Liability, and the Law
- VALUES AND ANALYSIS
- 6 Genetics and Conservation
- STRUCTURE OF GENETIC VARIATION
- LOCAL REPRODUCTIVE UNITS
- LOCAL ADAPTATION
- METAPOPULATION STRUCTURE
- LEVEL OF GENETIC ORGANIZATION TO BE CONSERVED
- EFFECTS OF HUMAN ACTIVITIES ON GENETIC DIVERSITY
- CONCLUSIONS
- 7 Habitat Loss
- DIMENSIONS OF THE PROBLEM
- NATURAL VERSUS ANTHROPOGENIC DISTURBANCES AND WATERSHED PRODUCTIVITY
- SEDIMENTATION
- STREAMBANK EROSION
- STREAMBANK ARMORING AND CHANNELIZATION
- INSTREAM MINING
- DIKING, DRAINING, AND FILLING
- FLOOD CONTROL
- ALTERED STREAMFLOW
- ALTERED GROUNDWATER
- ALTERED RIPARIAN VEGETATION
- ALTERED THERMAL REGIME
- DECREASED LARGE WOODY DEBRIS
- MIGRATION BARRIERS
- WATER POLLUTION
- LOSS OF REFUGES
- SUMMARY
- 8 Habitat Management and Rehabilitation
- WATERSHED INFLUENCES
- HABITAT-MANAGEMENT OPTIONS
- Protection
- Restoration
- Rehabilitation
- Substitution
- WATERSHED ANALYSIS
- OPPORTUNITIES AND CHALLENGES
- PROPERTY RIGHTS AND HABITAT PROTECTION ON PRIVATE LANDS
- BURDEN OF PROOF
- HABITAT MANAGEMENT AND FISHERIES MANAGEMENT
- 9 Dams and Mitigation of their Effects
- INTRODUCTION
- EFFECTS OF DAMS ON SALMON
- Dam-Related Mortality
- Time of Travel
- Unscreened Diversion Dams
- Estuarine Dynamics
- MITIGATION OF DAMS' EFFECTS ON SALMON
- Fish-Passage Facilities
- Predator Control
- Transportation
- Spill
- Flow Augmentation
- Reservoir Drawdown
- Dam Removal
- The Elwha River Proposal
- Applicability of Experience
- Selection of Mitigation Alternatives
- 10 Fishing
- SALMON FISHERIES IN THE PACIFIC NORTHWEST
- Early History
- The 1990s
- Fishery-Management Institutions
- Fishery-Management Data
- INTERNATIONAL INFLUENCES
- High-Seas Fishing
- Canadian and U.S. Fishery Interactions
- Fraser River Sockeye
- Fraser River Pinks
- Ocean Trolling
- Role of Southeastern Alaska
- The Pacific Salmon Treaty
- CONCLUSION
- 11 Salmon-Fishery Management Concepts
- STOCK AND RECRUITMENT
- FISHERY MANAGEMENT IN THE FUTURE
- The Status Quo
- The Limited-Entry Option
- The Terminal-Fishery Option
- Developing a New Management Paradigm
- Stock Assessment and Biological Advice
- Management Objectives
- Control of Fisheries
- CONCLUSIONS
- 12 Hatcheries
- PROBLEMS ASSOCIATED WITH HATCHERY PRACTICES
- Demographic Risks
- Genetic and Evolutionary Risks
- Population Identity and Within-Population Variability
- Domestication
- Behavior
- Fish Health
- Physiology
- Ecological Problems
- ROLES OF HATCHERIES IN THE FUTURE OF SALMON
- Hatcheries in the Rehabilitation Option
- Temporary Hatcheries
- Catch-Augmentation Hatchery
- CONCLUSIONS
- RECOMMENDATIONS
- 13 Institutional Analysis
- INTRODUCTION
- BIOREGIONAL GOVERNANCE
- ADAPTIVE MANAGEMENT
- A PROPOSAL FOR CONSTRUCTIVE ACTION
- Columbia River System
- Yakima River, Washington
- Grande Ronde River, Oregon
- McKenzie River, Oregon
- Coastal Streams and Estuaries
- Coos Bay, Oregon
- Rogue River, Oregon
- Willapa Bay, Washington
- Nisqually River, Washington
- 14 A Scientific Advisory Board to Address the Salmon Problem
- GAPS IN KNOWLEDGE
- SCIENCE, RIVER FLOWS, AND UNCERTAINTY
- A SCIENTIFIC ADVISORY BOARD
- Why a Scientific Advisory Board is Needed
- Requirements for an Effective Scientific Advisory Board
- 15 Conclusions and Recommendations: Toward a Sustainable Future for Salmon
- GENERAL CONCLUSION
- ENVIRONMENTAL CHANGES
- Oceanic Conditions
- Regional Variation
- VALUES AND INSTITUTIONS
- GENETICS AND CONSERVATION
- Genetic Resources
- Regional Population Structure
- HABITAT LOSS AND REHABILITATION
- DAMS
- FISHING AND FISHERY MANAGEMENT
- Too Few Spawners
- Protection of Genetic Diversity
- Strong and Depleted Populations
- HATCHERIES
- Role of Hatcheries
- Regional Variation in Use of Hatcheries
- INFORMATION NEEDS
- Funding Adequacy
- Adaptive Management
- INSTITUTIONS
- AN APPROACH TO SOLVING THE SALMON PROBLEM
- THE FUTURE
- References
- Appendixes
- Appendix A Biographical Information on Committee Members and Staff
- Appendix B Meeting Dates and Locations
- Appendix C Acknowledgements
- Appendix D Major Landforms and Their Rivers
- MOUNTAIN RANGES
- Willamette-Puget Lowland
- Cascade Mountains
- Columbia Intermountain Region
- Northern Rocky Mountains
- Great Basin
- Appendix E International Treaty Considerations in Operation of the Columbia River System
- Appendix F Reservoir-System Operation
- Index