200755500 - Using otolith microchemistry and microstructure to assess the causes and consequences of alternative life history strategies for Snake River fall Chinook

Sponsor: Northwest Fisheries Science Center

Short description:

Location: province, Systemwide subbasin

Budgets: FY08: $295,787 | FY09: $277,465

Primary species:
Anadromous: Chinook: Upper Columbia River Summer/Fall ESU


ObjectiveDescriptionSubbasin planStrategies
Analyze chemical signatures of otoliths and water Derive chemical concentrations of Sr stable isotopes and other trace elements in otoliths and water samples
Analyze microstructure of otoliths Obtain estimates of daily growth rates by examining the microstructure of fish otoliths
Collect otolith and water samples Obtain necessary fish and water samples for the chemical and structural analyses
Communicate results Disseminate findings through written reports, peer-reviewed publications, and oral presentations
Develop fish growth back-calculations Develop fish length/otolith size relationships and use these to back-calculate juvenile growth trajectories
Multivariate analyses of otolith micro-chemistry Determine spatial scale of habitat discrimination based on chemical signatures and test hypotheses concerning life-history traits



  • ISRP: Unranked
  • Council: Not fundable
  • BPA: Not fundable