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• 191. [Article] Preseason Report I, Stock Abundance Analysis for 1998, Ocean Salmon Fisheries

  Abstract -- This is the second report in an annual series of four reports prepared by the Salmon Technical Team (STT) of the Pacific Fishery Management Council (Council) to document and help guide salmon ...

  Citation × Citation Citation Abstract Copy Title: Preseason Report I, Stock Abundance Analysis for 1998, Ocean Salmon Fisheries Abstract -- This is the second report in an annual series of four reports prepared by the Salmon Technical Team (STT) of the Pacific Fishery Management Council (Council) to document and help guide salmon fishery management off the coasts of Washington, Oregon, and California. This report will be formally reviewed at the Council's March meeting. The third and fourth reports in this series will be developed at the close of the March and April Council meetings, respectively. They will analyze the impacts of the Council's proposed and final ocean salmon fishery management recommendations for 1998. This report provides 1998 salmon stock abundance projections and an analysis of the impacts of 1997 regulations, or regulatory procedures. The report focuses on chinook and coho stocks that have been important in determining Council fisheries in recent years. However, decisions on whether or not to propose Endangered Species Act listings for several chinook stocks ranging from central California to Puget Sound are anticipated in the near future. In the event that the National Marine Fisheries Service proposes new listings, information concerning the status of these stocks may significantly affect Council deliberations on the final salmon fishing seasons. Chapter I provides a summary of the 1998 stock abundance projections. Chapters II and Ill provide detailed stock-by-stock analyses of abundance and a description of prediction methodology and accuracy of past abundance predictions for chinook and coho salmon, respectively. Chapter IV summarizes abundance information for pink salmon. Four appendices provide supplementary information as follows: Appendix A provides a summary of Council stock management goals; Appendix 8 contains pertinent data for Oregon production index (OPI) area coho; Appendix C provides historical salmon catch data for the Cape Flattery and Strait of Juan de Fuca areas; and Appendix D contains the Council's current harvest allocation schedules. Summaries of preseason and postseason abundance estimates are included in: • Table 11-2 for Central Valley Index fall chinqok since 1985; • Table 11-4 for Klamath River fall chinook since 1985; • Table 11-8 for selected Columbia River fall chinook stocks since 1984; • Table 11-9 for Puget Sound summer/fall chinook stocks since 1993; • Table 111-1 for OPI area produced coho stocks since 1992 and • Table 111-3 for selected naturally spawning Puget Sound and Washington coastal coho stocks since 1984. Differences between preseason and postseason estimates are caused by a number of factors, including: (1) inaccuracies in abundance forecasts for these and other stocks which are exploited by mixed stock fisheries, (2) deviations of actual catches and fishery patterns from preseason expectations, (3) anomalies in stock distribution and migration patterns, and (4) for the Puget Sound coho stocks, differences in assessment methodologies (postseason estimates are based on run reconstruction assumptions which differ substantially from those represented in the Fishery Regulatory Assessment Model). The STT has not been able to complete a proper evaluation of abundance estimates which would take all these factors into account. Title: Preseason Report I, Stock Abundance Analysis for 1998, Ocean Salmon Fisheries Abstract -- This is the second report in an annual series of four reports prepared by the Salmon Technical Team (STT) of the Pacific Fishery Management Council (Council) to document and help guide salmon fishery management off the coasts of Washington, Oregon, and California. This report will be formally reviewed at the Council's March meeting. The third and fourth reports in this series will be developed at the close of the March and April Council meetings, respectively. They will analyze the impacts of the Council's proposed and final ocean salmon fishery management recommendations for 1998. This report provides 1998 salmon stock abundance projections and an analysis of the impacts of 1997 regulations, or regulatory procedures. The report focuses on chinook and coho stocks that have been important in determining Council fisheries in recent years. However, decisions on whether or not to propose Endangered Species Act listings for several chinook stocks ranging from central California to Puget Sound are anticipated in the near future. In the event that the National Marine Fisheries Service proposes new listings, information concerning the status of these stocks may significantly affect Council deliberations on the final salmon fishing seasons. Chapter I provides a summary of the 1998 stock abundance projections. Chapters II and Ill provide detailed stock-by-stock analyses of abundance and a description of prediction methodology and accuracy of past abundance predictions for chinook and coho salmon, respectively. Chapter IV summarizes abundance information for pink salmon. Four appendices provide supplementary information as follows: Appendix A provides a summary of Council stock management goals; Appendix 8 contains pertinent data for Oregon production index (OPI) area coho; Appendix C provides historical salmon catch data for the Cape Flattery and Strait of Juan de Fuca areas; and Appendix D contains the Council's current harvest allocation schedules. Summaries of preseason and postseason abundance estimates are included in: • Table 11-2 for Central Valley Index fall chinqok since 1985; • Table 11-4 for Klamath River fall chinook since 1985; • Table 11-8 for selected Columbia River fall chinook stocks since 1984; • Table 11-9 for Puget Sound summer/fall chinook stocks since 1993; • Table 111-1 for OPI area produced coho stocks since 1992 and • Table 111-3 for selected naturally spawning Puget Sound and Washington coastal coho stocks since 1984. Differences between preseason and postseason estimates are caused by a number of factors, including: (1) inaccuracies in abundance forecasts for these and other stocks which are exploited by mixed stock fisheries, (2) deviations of actual catches and fishery patterns from preseason expectations, (3) anomalies in stock distribution and migration patterns, and (4) for the Puget Sound coho stocks, differences in assessment methodologies (postseason estimates are based on run reconstruction assumptions which differ substantially from those represented in the Fishery Regulatory Assessment Model). The STT has not been able to complete a proper evaluation of abundance estimates which would take all these factors into account. Close

• 192. [Article] Abundance, Productivity, and Life History of Fifteenmile Creek Steelhead; Annual Report 2016

  Abstract -- The Fifteenmile Creek watershed in North Central Oregon hosts a native population of steelhead (Oncorhynchus mykiss) that is without influence of previous hatchery augmentation. The Fifteenmile ...

  Citation × Citation Citation Abstract Copy Title: Abundance, Productivity, and Life History of Fifteenmile Creek Steelhead; Annual Report 2016 Abstract -- The Fifteenmile Creek watershed in North Central Oregon hosts a native population of steelhead (Oncorhynchus mykiss) that is without influence of previous hatchery augmentation. The Fifteenmile Creek steelhead are a subpopulation within the Distinct Population Segment (DPS) of the Middle Columbia River steelhead and was listed as ‘threatened’ by the National Marine Fisheries Service (NMFS) first on March 25, 1999 and relisted as a DPS on January 5, 2006. Subsequently, a conservation and recovery management plan was developed for the Middle Columbia River steelhead DPS within Oregon state borders. The goal of the plan is to recover Middle Columbia River steelhead to a level that would allow the removal of threatened status, in addition to providing a long-term goal to recover the population sufficiently to provide sustainable fisheries and other ecological, cultural, social and economic benefits for future generations. The DPS-level recovery plan sets specific recovery goals for the areas within the DPS, which designates Fifteenmile Creek explicitly. The Fifteenmile Creek steelhead population is considered the most inland winter race of steelhead in the Columbia River Basin, as designated by NOAA fisheries. However review of this designation may be necessary at the next Federal Columbia River Power System (FCRPS) Biological Opinion (BiOp) status-review because the run-timing of adult steelhead passing Bonneville Dam has been inconsistent with known winter-run steelhead in the area. The population was identified as “must have viable” status by the Interior Columbia Technical Recovery Team (ICTRT), and reaching viable status is essential for achieving DPS delisting. The ICTRT, Recovery Plan, and the Federal Columbia River Power System (FCRPS-BiOp) have all identified this population as high priority for improving precision and accuracy of abundance, productivity, diversity, and spatial structure information. Title: Abundance, Productivity, and Life History of Fifteenmile Creek Steelhead; Annual Report 2016 Abstract -- The Fifteenmile Creek watershed in North Central Oregon hosts a native population of steelhead (Oncorhynchus mykiss) that is without influence of previous hatchery augmentation. The Fifteenmile Creek steelhead are a subpopulation within the Distinct Population Segment (DPS) of the Middle Columbia River steelhead and was listed as ‘threatened’ by the National Marine Fisheries Service (NMFS) first on March 25, 1999 and relisted as a DPS on January 5, 2006. Subsequently, a conservation and recovery management plan was developed for the Middle Columbia River steelhead DPS within Oregon state borders. The goal of the plan is to recover Middle Columbia River steelhead to a level that would allow the removal of threatened status, in addition to providing a long-term goal to recover the population sufficiently to provide sustainable fisheries and other ecological, cultural, social and economic benefits for future generations. The DPS-level recovery plan sets specific recovery goals for the areas within the DPS, which designates Fifteenmile Creek explicitly. The Fifteenmile Creek steelhead population is considered the most inland winter race of steelhead in the Columbia River Basin, as designated by NOAA fisheries. However review of this designation may be necessary at the next Federal Columbia River Power System (FCRPS) Biological Opinion (BiOp) status-review because the run-timing of adult steelhead passing Bonneville Dam has been inconsistent with known winter-run steelhead in the area. The population was identified as “must have viable” status by the Interior Columbia Technical Recovery Team (ICTRT), and reaching viable status is essential for achieving DPS delisting. The ICTRT, Recovery Plan, and the Federal Columbia River Power System (FCRPS-BiOp) have all identified this population as high priority for improving precision and accuracy of abundance, productivity, diversity, and spatial structure information. Close

• 193. [Article] Lower Snake River Compensation Plan; Oregon Spring Chinook Salmon Evaluation Studies - 2016 Annual Progress Report

  Abstract -- This annual progress report summarizes spring-summer Chinook Salmon monitoring data collected by ODFW for the Lower Snake River Compensation Plan (LSRCP) facilities in 2015. Also summarized ...

  Citation × Citation Citation Abstract Copy Title: Lower Snake River Compensation Plan; Oregon Spring Chinook Salmon Evaluation Studies - 2016 Annual Progress Report Abstract -- This annual progress report summarizes spring-summer Chinook Salmon monitoring data collected by ODFW for the Lower Snake River Compensation Plan (LSRCP) facilities in 2015. Also summarized are the associated broodstock monitoring data collected at weirs in the Grande Ronde Basin that are operated by our co-managers, the Nez Perce Tribe (NPT; Lostine River) and Confederated Tribes of the Umatilla Indian Reservation (CTUIR; Catherine Creek and Upper Grande Ronde River). The main objectives of this report are to document and evaluate spring-sumer Chinook Salmon culture performance for hatchery programs and achievement of management objectives in the Imnaha and Grande Ronde river basins (CTUIR and NPT have specific program goals for Chinook returns to Catherine Creek, the Upper Grande Ronde River, Lookingglass Creek, and the Lostine River that are discussed and evaluated in separate reports prepared by each co-management agency). Overall, these data are used to adaptively manage salmon culture practices in order to optimize egg-to-smolt survival rate, smolt quality, smolt-toadult survival rate, the recruits-per-spawner (R:S) ratio, and to monitor spawning in nature by hatchery-reared salmon. Lower Snake River Compensation Plan (LSRCP) ODFW- Eastern Oregon Fish Research (EOFR) Title: Lower Snake River Compensation Plan; Oregon Spring Chinook Salmon Evaluation Studies - 2016 Annual Progress Report Abstract -- This annual progress report summarizes spring-summer Chinook Salmon monitoring data collected by ODFW for the Lower Snake River Compensation Plan (LSRCP) facilities in 2015. Also summarized are the associated broodstock monitoring data collected at weirs in the Grande Ronde Basin that are operated by our co-managers, the Nez Perce Tribe (NPT; Lostine River) and Confederated Tribes of the Umatilla Indian Reservation (CTUIR; Catherine Creek and Upper Grande Ronde River). The main objectives of this report are to document and evaluate spring-sumer Chinook Salmon culture performance for hatchery programs and achievement of management objectives in the Imnaha and Grande Ronde river basins (CTUIR and NPT have specific program goals for Chinook returns to Catherine Creek, the Upper Grande Ronde River, Lookingglass Creek, and the Lostine River that are discussed and evaluated in separate reports prepared by each co-management agency). Overall, these data are used to adaptively manage salmon culture practices in order to optimize egg-to-smolt survival rate, smolt quality, smolt-toadult survival rate, the recruits-per-spawner (R:S) ratio, and to monitor spawning in nature by hatchery-reared salmon. Lower Snake River Compensation Plan (LSRCP) ODFW- Eastern Oregon Fish Research (EOFR) Close

• 194. [Article] Oregon's Coastal Chinook, A Summary

  Abstract -- Whether they are landed by anglers using rods and reels, or commercial fishermen using troll gear, chinook salmon are prize fish. These fish have been an important cultural and economic element ...

  Citation × Citation Citation Abstract Copy Title: Oregon's Coastal Chinook, A Summary Abstract -- Whether they are landed by anglers using rods and reels, or commercial fishermen using troll gear, chinook salmon are prize fish. These fish have been an important cultural and economic element of Oregon's coastal economy for more than 100 years. Although human activity has affected the species during the past century, chinook remain today a strong and extremely valuable component within the state economic system. In 1987, for example, commercial and recreational fisheries caught more than a half-million chinook. Most of those fish had their origin in coastal streams of Oregon and northern California. This report summarizes the findings of a study that offers a comprehensive view of Oregon's coastal chinook salmon populations based on the best information currently available. The study is titled "Chinook Salmon Populations in Oregon Coastal River Basins: Description of Life Histories and Assessment of Recent Trends in Run Strengths." The study does not deal with chinook stocks of the Columbia River Basin. A limited supply of document copies is available for public review at libraries and department offices around the state. Personal copies of the study are available for a fee. Title: Oregon's Coastal Chinook, A Summary Abstract -- Whether they are landed by anglers using rods and reels, or commercial fishermen using troll gear, chinook salmon are prize fish. These fish have been an important cultural and economic element of Oregon's coastal economy for more than 100 years. Although human activity has affected the species during the past century, chinook remain today a strong and extremely valuable component within the state economic system. In 1987, for example, commercial and recreational fisheries caught more than a half-million chinook. Most of those fish had their origin in coastal streams of Oregon and northern California. This report summarizes the findings of a study that offers a comprehensive view of Oregon's coastal chinook salmon populations based on the best information currently available. The study is titled "Chinook Salmon Populations in Oregon Coastal River Basins: Description of Life Histories and Assessment of Recent Trends in Run Strengths." The study does not deal with chinook stocks of the Columbia River Basin. A limited supply of document copies is available for public review at libraries and department offices around the state. Personal copies of the study are available for a fee. Close

• 195. [Article] Status of Wild Coho Salmon Passing Marmot Dam, Sandy River 1992

  Abstract -- The number of wild coho salmon counted at Marmot Dam on the Sandy River has declined from an average annual return of 1,444 fish in 1960-66 to an average annual return of only 129 fish in 1987-91. ...

  Citation × Citation Citation Abstract Copy Title: Status of Wild Coho Salmon Passing Marmot Dam, Sandy River 1992 Abstract -- The number of wild coho salmon counted at Marmot Dam on the Sandy River has declined from an average annual return of 1,444 fish in 1960-66 to an average annual return of only 129 fish in 1987-91. In contrast, the total escapement of coho salmon has remained virtually unchanged, averaging 1,447 fish in 1987-91, reflecting an increase in hatchery fish returns. Wild fish currently compose 8.9% of the coho salmon counted at Marmot Dam. A shift in peak time of arrival in November in 1960-66 to a peak time of arrival in October in subsequent years is indicative of the increase in early-run hatchery fish and commensurate decline of late-run wild fish in the run. The loss in production of wild fish is likely the result of competition and introgression with.hatchery fish that have been extensively transplanted above Marmot Dam since 1964. Title: Status of Wild Coho Salmon Passing Marmot Dam, Sandy River 1992 Abstract -- The number of wild coho salmon counted at Marmot Dam on the Sandy River has declined from an average annual return of 1,444 fish in 1960-66 to an average annual return of only 129 fish in 1987-91. In contrast, the total escapement of coho salmon has remained virtually unchanged, averaging 1,447 fish in 1987-91, reflecting an increase in hatchery fish returns. Wild fish currently compose 8.9% of the coho salmon counted at Marmot Dam. A shift in peak time of arrival in November in 1960-66 to a peak time of arrival in October in subsequent years is indicative of the increase in early-run hatchery fish and commensurate decline of late-run wild fish in the run. The loss in production of wild fish is likely the result of competition and introgression with.hatchery fish that have been extensively transplanted above Marmot Dam since 1964. Close