Title: Effects of Harbor Seal Metabolism on Stable Isotope Ratio Tracers
Project Year and Number: 1999: 99371
Principal Investigator (PI): Donald Schell, University of Alaska Fairbanks
Assisting Personnel: None
Research Location: Prince William Sound, Gulf of Alaska
Restoration Category: Research
Injured Resources Addressed: Harbor Seals
Abstract: A major concern with the use of stable isotope tracers in ecosystem studies is the fidelity with which ratios are transferred up food chains. Use of specific habitats or prey cannot be assessed if geographic gradients in isotope ratios are laid on top of trophic effects and/or prey switching. To remove these problems, this project will seek specific conservative biomarkers such as essential amino acids or fatty acids that carry isotope ratios unmodified by metabolism. Amino acids labeled with 15N and 13C will be used to follow transamination and carbon relocation during metabolic processes in the seals at the Alaska SeaLife Center. Specific fatty acid isolation and determination of suitability as habitat biomarkers will follow in years two and three of the project.
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Proposal: PDF Not Available
Funding Recommendations: View
Funding Detail For: 1999
Quarterly Project Tasks For: 1999
Annual Report: 1999: View (274 KB)
Final Report: See Project 476
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|
|2001: 01371-CLO||View (PDF)||
||In Review Prior to Publication - For More Information Please Contact Us||No datasets|
|2000: 00371||Not Available||
||See Project 01371-CLO||See Project 01371-CLO|