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Cohen Commission of Inquiry into the Decline of Sockeye Salmon in the Fraser River • Volume 2 The Commission asked the contractors to produce technical reports detailing their findings. In most cases, contractors delivered their reports to the Commission by December 15, 2010. The reports were then peer reviewed, typically by three experts in the field or related fields. Following this review, the contractors made revisions and delivered their final versions by the end of January 2011. While the technical reports were being prepared, Commission counsel and the participants discussed several other issues that warranted examination. The Commission ultimately approved additional technical reports relating to the impacts of environmental conditions in the Lower Fraser River and Strait of Georgia, as well as an analysis of infectious diseases originating from salmon enhancement facilities on Fraser River sockeye salmon. Ultimately, 15 technical reports became exhibits.* A list of these reports appears as Table 2.1.1. Table 2.1.1 Cohen Commission technical reports Technical Report number Full title Abbreviated title Exhibit number 1 Infectious Diseases and Potential Impacts on Survival of Fraser River Sockeye Salmon 1A Assessment of the Potential Effects of Diseases Present in Salmonid Enhancement Facilities on Fraser River Sockeye Salmon Infectious Diseases 1449 Enhancement Facility Diseases 2 Potential Effects of Contaminants on Fraser River Sockeye Salmon Contaminants 826 3 Evaluating the Status of Fraser River Sockeye Salmon and Role of Freshwater Ecology 562 Freshwater Ecology in Their Decline 4 The Decline of Fraser River Sockeye Salmon Oncorhynchus nerka Marine Ecology 1291 (Steller, 1743) in Relation to Marine Ecology 5A Summary of Information for Evaluating Impacts of Salmon Farms on Survival of Fraser River Sockeye Salmon Salmon Farms and Sockeye Information 1543 5B Examination of Relationships between Salmon Aquaculture and Sockeye Salmon Population Dynamics 5C Impacts of Salmon Farms on Fraser River Sockeye Salmon: Results of the Noakes Investigation 5D Impacts of Salmon Farms on Fraser River Sockeye Salmon: Results of the Dill Investigation 6 Fraser River Sockeye Salmon: Data Synthesis and Cumulative Impacts; and 6 – Addendum Addendum, Implications of Technical Reports on Salmon Farms and Hatchery Diseases for Technical Report 6 7 Fraser River Sockeye Fisheries and Fisheries Management and Comparison with Bristol Bay Sockeye Fisheries 1454 Salmon Farms and 1545 Sockeye Relationships Noakes Salmon Farms 1536 Investigation Dill Salmon Farms 1540 Investigation Data Synthesis 1896 Data Synthesis 1575 Addendum Fisheries Management 718 8 Predation on Fraser River Sockeye Salmon Predation 783 9 A Review of Potential Climate Change Effects on Survival of Fraser Climate Change 553 River Sockeye Salmon and an Analysis of Interannual Trends in En Route Loss and Pre-spawn Mortality 10 Fraser River Sockeye Production Dynamics Production Dynamics 748 12 Fraser River Sockeye Habitat Use in the Lower Fraser and Strait of Georgia Lower Fraser Habitat 735 * Technical Report 11, DFO Science and Management was not entered as an exhibit and is not listed in Table 2.1.1; however, it is available on the Commission’s website at www.cohencommission.ca. 2
Chapter 1 • Introduction To give readers an appreciation of the breadth and complexity of scientific and technical issues examined, I have included, as Appendix B to this volume, the executive summaries and tables of contents of these technical reports. The summaries include the researchers’ conclusions, based on the available information. The complete technical reports are available on the Commission’s website and are also included in the DVD accompanying this volume. The Commission held hearings on all these technical report topics, at which one or more of each report’s authors testified, in some cases alongside other witnesses. The Commission also held hearings on marine research and management, on habitat enhancement and restoration, and on other related stressors that were not the primary subject of technical reports, including: • urbanization; • pulp and paper effluent, mining effluent; • municipal wastewater; • gravel removal; • forestry; and • hydroelectric power, water flow, and temperature. Transcripts of these hearings are available on the Commission’s website, and are also included in the DVD accompanying this volume. In the following chapters of this volume, I summarize the evidence from all these sources and make reference to submissions received from interested members of the public. These chapters consolidate the evidentiary record that is before this Commission. The text is intended to reflect what the contractors wrote in their reports, what witnesses said in their testimony, and what members of the public told me in their submissions. It should not be assumed that I necessarily agree with or endorse everything set out in these chapters – rather, they provide a summary of what I read and heard. My findings of fact and conclusions respecting the causes of the decline of Fraser River sockeye salmon will come later, in the final chapter of this volume. Notes 1 Terms of Reference, a.i.C.I. 2 Available at http://www.cohencommission.ca and on the DVD accompanying this volume. 3
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Abbreviations and acronyms AAA AARO
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