Assessment of the Pacific cod stock in the Gulf of Alaska

Details

• Alternative Title:
  GOA Chapter 2
• Personal Author:
  Barbeaux, Steven J. ; Aydin, Kerim ; Fissel, Ben ; Holsman, Kirstin ; Palsson, Wayne ; Shotwell, S. Kalei ; Yang, Qiong ; Zador, Stephani
• NOAA Program & Office:
  NMFS (National Marine Fisheries Service)
• Description:
  The addition of the new method for estimating the fishery catch-at-lengths and applying ADF&G port sampling data in the pot fishery made only a small difference in model results and was an improvement of how estimates were derived. Model 17.09.35 provided the best fit to the data represents a balance between acknowledging a mortality event (with M changing in 2015-2016) and overfitting survey data. Also, this model performed well in retrospective analyses. This recommended model configuration differs from the 2016 Model in allowing natural mortality to change for 2015 and 2016. It also adds a feature that allows the catchability in the AFSC longline RPN index to be conditioned on water temperature.
• Keywords:
  Fish Stock Assessment Groundfish Pacific Cod Fish Stock Assessment Pacific Cod
• Series:
  Gulf of Alaska Stock Assessments
• Document Type:
  Stock Assessment
• Place as Subject:
  Alaska, Gulf of
• Rights Information:
  Public Domain
• Compliance:
  Submitted
• Main Document Checksum:
  urn:sha256:36a0e13917c9375ffd32cd92e0abb256e3879a8f6793183392aae5480c4a1d4f
• Download URL:
  https://repository.library.noaa.gov/view/noaa/17515/noaa_17515_DS1.pdf
• File Type:
  [PDF - 7.61 MB ]