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Project Information

Title: Reconstructing Sockeye Populations in the GOA over the Last Several Thousand Years: The Natural Background to Future Changes

Project Year and Number: 2004: 040649

Other Fiscal Years and Numbers for this Project: 2003: 030649, 2002: 02649

Principal Investigator (PI): Dan Mann, University of Alaska Fairbanks

Assisting Personnel: None

Research Location: Prince William Sound, Kodiak, Kenai Peninsula

Restoration Category: Research

Injured Resources Addressed: Commercial Fishing , Sockeye Salmon , Subsistence

Abstract: We are reconstructing changes in sockeye salmon abundance over the last 10,000 years using the 15N record left by salmon carcasses in the sediments of spawning lakes. Our research question is: What is the normal variability in sockeye salmon populations in the Gulf of Alaska and how does it relate to climatic changes in the Gulf of Alaska region? Our results provide a much-needed background to monitoring studies within the GEM program and to fisheries managers who are working to preserve and restore natural salmon runs. Results from 2002 and 2003 include two new and unexpectedly complete records of salmon abundance in lakes on the Kenai Peninsula. Both records extend back to the time of regional deglaciation around 10,000 years ago. These new cores provide records of changing 15N that are five times longer than any previous record of salmon-run history. The unexpected length and richness of these new lake-core records have motivated us to request additional funds from EVOS to cover an additional year of full funding followed by a final year of analysis and synthesis.


Species Fish - Salmon
Fields of Expertise Ecology
Technological Methods Modeling

Proposal: View PDF (88 KB)

Funding Recommendations: View

Funding Detail For: 2004 , 2005

Quarterly Project Tasks For: 2004 , 2005

Annual Reports: 2004: View (1,799 KB) 2005: Not Applicable

Final Report: In Review Prior to Publication - For More Information Please Contact Us

Publications from this Project: None Available

More information may be available for this project under other years:

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Project Number Proposal Annual Reports Final Report Data
2003: 030649 View (PDF) 2003: View (PDF)
See Project 040649 See Project 040649
2002: 02649 View (PDF) 2002: Not Applicable
See Project 040649 See Project 040649