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PR Aqua, water treatment and aquaculture specialists in Nanaimo, was contracted in the summer of 2010 to develop a detailed design and cost estimate for equipment purchases, fabrication and installation of a of a chilled acclimation system
for adult summer chinook at Puntledge Hatchery. Implementation of this project will increase summer chinook production and rebuild the early migrating component of the returns.
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Author: Guimond, E.
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Old Reference Number: 10.Pun.04
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Old Reference System: FWCP Fish Wildlife Compensation Program - Coastal
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Date Published: Jan 2011
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Report ID: 40306
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Audience: Government and Public
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Since construction of the Puntledge River hydroelectric facilities in 1912, and expansion in the 1950s, fish populations in the river have been subjected to a variety of footprint impacts, as described in the Bridge-Coastal Fish and Wildlife Restoration Program (BCRP) Strategic Plan (BC Hydro 2000). Puntledge summer-run chinook
salmon experienced significant declines after expansion, from a pre-expansion level of 3000 to an average of 400 through the 1960s and early 1970s. Despite over 50 years of considerable effort to rebuild this population to pre-hydro expansion levels, summer chinook returns remain well below target escapements. The population continues to be
under significant threat due to loss of spring freshet flows, lack of suitable spawning habitat, reduced or delayed access to Comox Lake, high river water temperature, and seal predation. The Puntledge River system is one of a few rivers on the east coast of Vancouver Island that supports both a summer and a fall run of chinook salmon. The two Puntledge chinook stocks likely originated from the same population, but the summer chinook are now genetically distinct from the fall chinook and from other chinook stocks in the Georgia Basin. They have been classified as a unique conservation unit under Fisheries and Oceans Canada (DFO) Wild Salmon Policy and it is currently a priority for DFO to develop a recovery plan for this stock. Predictive
modelling of summer chinook recovery response to various changes in survival criteria (stress, predation, incubation, etc.) illustrates that hatchery enhancement, combined with other recovery actions in the watershed will continue to be a key component to the overall recovery of the summer chinook population to historical levels (Guimond and Sheng 2009).
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Report Type
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Fish and Aquatic Habitat Information |
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Subject
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Fish Species - Chinook Salmon - Oncorhynchus tshawytscha |
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Region - Vancouver Island |
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Fish and Fish Habitat - Habitat and Stream Assessment |
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Fish and Fish Habitat - Management |
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Fish and Fish Habitat - Research |
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Fish and Fish Habitat - Restoration |
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Fish and Fish Habitat - Resource Use |
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Watershed Groups - 920 - Vancouver Island (East) Rivers |
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Water Information - Storage Inventory -Lakes and Reservoirs |
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