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Beginning in the mid 1980s and through much of the 1990s, production of the Crescent River sockeye (Oncorhynchus nerka) salmon declined as evidence by lower adult returns and fewer adult recruits produced per spawner (RPS). For brood years 1984-1988 and 1990, RPS values fell below replacement. Concern over the decline in productivity initiated limnological studies in 1996 to determine whether sockeye salmon production was related to variability in changing conditions of the major nursery lake (Crescent Lake) of this system. The escapment goal range was lowered in 1998 from 50,000-100,000 to the current 25,000-50,000 range in part based on the low density of cyclopoid (Cyclops scutifer) copepods, the primary food...
map background search result map search result map Upper Cook Inlet salmon escapement studies, 2000 CENTRAL REGION LIMNOLOGY 2001 ANNUAL REPORT OF PROGRESS SOCKEYE AND COHO SALMON ESCAPEMENT STUDIES IN THE SUSITNA DRAINAGE 1998 Upper Cook Inlet salmon escapement studies, 2001 The Feasibility of estimating migrating salmon passage rates in turbid rivers using a dual frequency identification sonar (DIDSON) An estimate of total return of sockeye salmon to Upper Cook Inlet, Alaska 1976–2003 Upper Cook Inlet commercial fisheries annual management report, 2004 Yukon River Salmon Age, Sex, and Length Database Error Checking and Finalization Yukon River salmon age, sex, and length (ASL) sampling procedures for scale gum cards and mark-sense data forms Genetic Stock Identification of Chinook Salmon Harvest on the Yukon River, 2006 Improving Preseason Forecasts of Kenai River Sockeye Salmon Runs Through Salmon Smolt Monitoring - Technology Development Report to the Alaska State Legislature on Status of Cook Inlet Coho and Sockeye Salmon Genetic Projects, 2013 Consideration of Hatchery Projects as a Means of Mitigating Impacts of Declining Chinook Salmon Runs and Supporting Research Activities in Alaska Report to the Alaska State Legislature on Status of Cook Inlet Coho and Sockeye Salmon Genetic Projects, 2014 Salmon age, sex, and length catalog for the Kuskokwim area, 2008 Western Alaska Salmon Stock Identification Program Technical Document 11: Defining reporting groups Yukon River chum salmon : report for genetic identification studies, 1992-1997 Report to the Alaska Board of Fisheries: Progress Report on Genetic and Coded Wire Tag Mixed Stock Analysis of Chinook Salmon Harvested in Cook Inlet Marine Sport Fishery, 2014–2016 Improving Preseason Forecasts of Kenai River Sockeye Salmon Runs Through Salmon Smolt Monitoring - Technology Development The Feasibility of estimating migrating salmon passage rates in turbid rivers using a dual frequency identification sonar (DIDSON) Upper Cook Inlet salmon escapement studies, 2000 Upper Cook Inlet salmon escapement studies, 2001 SOCKEYE AND COHO SALMON ESCAPEMENT STUDIES IN THE SUSITNA DRAINAGE 1998 Report to the Alaska State Legislature on Status of Cook Inlet Coho and Sockeye Salmon Genetic Projects, 2014 Report to the Alaska Board of Fisheries: Progress Report on Genetic and Coded Wire Tag Mixed Stock Analysis of Chinook Salmon Harvested in Cook Inlet Marine Sport Fishery, 2014–2016 An estimate of total return of sockeye salmon to Upper Cook Inlet, Alaska 1976–2003 Upper Cook Inlet commercial fisheries annual management report, 2004 Consideration of Hatchery Projects as a Means of Mitigating Impacts of Declining Chinook Salmon Runs and Supporting Research Activities in Alaska Report to the Alaska State Legislature on Status of Cook Inlet Coho and Sockeye Salmon Genetic Projects, 2013 CENTRAL REGION LIMNOLOGY 2001 ANNUAL REPORT OF PROGRESS Salmon age, sex, and length catalog for the Kuskokwim area, 2008 Yukon River Salmon Age, Sex, and Length Database Error Checking and Finalization Yukon River salmon age, sex, and length (ASL) sampling procedures for scale gum cards and mark-sense data forms Genetic Stock Identification of Chinook Salmon Harvest on the Yukon River, 2006 Western Alaska Salmon Stock Identification Program Technical Document 11: Defining reporting groups Yukon River chum salmon : report for genetic identification studies, 1992-1997