Title: Restoration of Coghill Lake Sockeye Salmon
Project Year and Number: 1997: 97259-CLO
Principal Investigator (PI): Jim Edmundson, Alaska Department of Fish & Game
Research Location: Prince William Sound
Restoration Category: General Restoration
Injured Resources Addressed: Sockeye Salmon
Abstract: Coghill Lake has been historically the major producer of sockeye salmon in Prince William Sound and a mainstay of commercial and sport fisheries. Beginning in 1993, the Trustee Council has funded a program to fertilize Coghill Lake to increase zooplankton levels, which in turn benefits juvenile sockeye growth and survival. After three years of lake fertilization, primary and secondary productivity have increased, the smolt migrations have increased five-fold, and the escapement goal in 1995 was achieved. This does not constitute a complete recovery as the zooplankton density is lower than desired. However, sockeye production in this lake has increased to attain adequate escapement. A fifth year of lake fertilization originally envisioned and two years of post-fertilization assessment will not be completed, as the Chief Scientist has recommended that this project be closed out in FY 97.
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Proposal: PDF Not Available
Funding Recommendations: View
Funding Detail For: 1997
Quarterly Project Tasks For: 1997
Annual Report: 1997: Not Available
Final Report: See Project 1081
Publications from this Project: None Available
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|Project Number||Proposal||Annual Reports||Final Report||Data|
|1996: 96259||Not Available||
|1995: 95259||Not Available||
||See Project 96259||See Project 96259|
|1994: 94259||Not Available||
||View||See Project 96259|