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Appendix C Tier Goals and Assessment Levels in NMFS' Stock Assessment Improvement Plan
Pages 25-26

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From page 25...
... Level ~ Either: · a time series of a (potentially imprecise) abundance index calculated as raw or standardized CPUE in commercial, recreational, or survey vessel data, or a one-time estimation of absolute abundance made on the basis of tagging results, a depletion study, or some form of calibrated survey.
From page 26...
... Level 4 Size-, stage-, or age-structureci models such as cohort analysis and untuned and tuned VPA analyses, age-structured production models, CAGEAN, stock synthesis, size or age-structured Bayesian models, modified DeLury methods, and size or age-based mark-recapture models. Level 5 Assessment models incorporating ecosystem considerations and spatial and seasonal analyses in addition to Levels 3 or 4.


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