Events Calendar

HMSC Research Seminar-Analysis of radiocarbon readings from fish otoliths to validate aging methods used in stock assessments

Speaker: Andi Stephens, Northwest Fisheries Science Center, NOAA located at the Hatfield Marine Science Center

Topic: Analysis of radiocarbon readings from fish otoliths to validate aging methods used in stock assessments

Age validation has long been recognized as critical to the assessment process.  It is analogous to calibrating scientific instruments.  Imprecision occurs when multiple reads report different ages, and bias is a systematic under- or over-estimation; these are confounded in aging lab settings.  Imprecision in terms of between-reader variability can be quantified and addressed, for example using age-error matrices in stock assessment models.  Bias can only be uncovered by an age-validation study.  I will discuss these issues and present several examples of recent work.

 

Dial-In Information

1-971-247-1195 US Meeting ID: 945 5573 1151

Thursday, December 16 at 3:30pm to 4:30pm

Virtual Event
Event Type

Lecture or Presentation

Event Topic

Research

Audience

Community Members, Faculty and Staff, Student, Online

County

Lincoln

Website

https://hmsc.oregonstate.edu/

Cost

Free

Organization
Hatfield Marine Science Center
Contact Name

Cinamon Moffett

Contact Email

moffettc@oregonstate.edu

Contact Phone

5418670126

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