Preliminary 2023 Eastern Bering Sea Pacific cod stock assessment

These are draft results until final review and approval by the North Pacific Fishery Management Council
Please note that this page is meant as a tool to help in collaboration among reviewers and assessment authors and as such is not an official publication by NOAA. Everything on this page is preliminary.

Documents and appendices

September documentation:

• September Github page

Main document:

• 2023 EBS Pacific Cod Stock Assessment (.pdf)

Appendices:

• Appendix 2.1: September documentation (.pdf)
• Appendix 2.2: Eastern Bering Sea Pacific Cod ESP Report Card(.pdf)
• Appendix 2.3: 2022 Ensemble Models SS Files (.zip)
• Appendix 2.4: 2023 Models SS Files (.zip)
• Appendix 2.5: All model data and results tables (.xlsx)

Presentations

Plan Team:

• 2023 EBS Pacific Cod Stock Assessment Plan Team Presentation (.pdf)

Science and Statistical Committee:

• 2023 EBS Pacific Cod Stock Assessment SSC Presentation (.pdf)

r4ss plots:

Updated 17 October 2023 to reflect the draft models:

2022 Models:

• Model 22.1
• Model 22.2
• Model 22.3
• Model 22.4

2023 Models:

• Model 23.1.0.a
• Model 23.1.0.d
• Model 23.2

Associated PDF of other figures:

Survey and fishing maps

• Bottom trawl survey maps with NBS (pdf)
• Bottom trawl survey maps EBS only (pdf)
• Fishing maps (pdf)

Model and ensemble figures

• Ensemble models derived quatities and parameter distribution figures(pdf)
• 2023 models derived quatities and parameter distribution figures(pdf)
• 2022 Ensemble and Model 23.1.0.d derived quantities comparison figures(pdf)
• Catch to biomass figures(pdf)

Projection figures

2022 Models:

• Model 22.1 (pdf)
• Model 22.2 (pdf)
• Model 22.3 (pdf)
• Model 22.4 (pdf)

2023 Models:

• Model 23.1.0.a (pdf)
• Model 23.1.0.d (pdf)
• Model 23.2 (pdf)

Historical spawning stock biomass timeseries (1999-2023)

• Historical female spawning stock biomass timeseries

Diagnostic plots (ss3diags library)

2022 Models:

• Model 22.1 (pdf)
• Model 22.2 (pdf)
• Model 22.3 (pdf)
• Model 22.4 (pdf)

2023 Models:

• Model 23.1.0.a (pdf)
• Model 23.1.0.d (pdf)
• Model 23.2 (pdf)

JABBA All models:

• JABBA figures(pdf)

Other figures

Profiles:

• Likelihood profiles over survey catchability (pdf)
• Profiles over natural mortality for Model 23.1.0.d (pdf)
• Profiles over the standard error of natural mortality for Model 23.1.0.d (pdf)

Misc.:

• Random catch figures (pdf)

Alternative diagnostic plots (OSA plots)

2022 Models:

• Model 22.1 Survey Age (pdf)
• Model 22.1 Survey Length (pdf)
• Model 22.1 Fishery Length (pdf)
• Model 22.2 Survey Age (pdf)
• Model 22.2 Survey Length (pdf)
• Model 22.2 Fishery Length (pdf)
• Model 22.3 Survey Age (pdf)
• Model 22.3 Survey Length (pdf)
• Model 22.3 Fishery Length (pdf)
• Model 22.4 Survey Age (pdf)
• Model 22.4 Survey Length (pdf)
• Model 22.4 Fishery Length (pdf)

2023 Models:

• Model 23.1.0.a Survey Age (pdf)
• Model 23.1.0.a Survey Length (pdf)
• Model 23.1.0.a Fishery Length (pdf)
• Model 23.1.0.d Survey Age (pdf)
• Model 23.1.0.d Survey Length (pdf)
• Model 23.1.0.d Fishery Length (pdf)
• Model 23.2 Survey Age (pdf)
• Model 23.2 Survey Length (pdf)
• Model 23.2 Fishery Length (pdf)