Assessment of the shark stock complex in the Gulf of Alaska
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Assessment of the shark stock complex in the Gulf of Alaska

Filetype[PDF-64.25 KB]


Details:
  • Alternative Title:
    GOA Chapter 20
  • Personal Author:
  • NOAA Program & Office:
    NMFS (National Marine Fisheries Service)
  • Description:
    The shark complex (spiny dogfish, Pacific sleeper shark, salmon shark and other/unidentified sharks) in the Gulf of Alaska (GOA) is assessed on a biennial stock assessment schedule that coincides with the availability of new trawl survey biomass estimates. In alternate (even) years we present an executive summary to recommend harvest levels for the next two years. For detailed information regarding the assessment, please refer to the last full stock assessment, which is available online (Tribuzio et al. 2015, http://www.afsc.noaa.gov/REFM/Docs/2015/GOAshark.pdf). A full stock assessment document will be presented in next year’s SAFE report. The complex acceptable biological catch (ABC) and overfishing level (OFL) are based on the sum of the ABC and OFL calculations for the individual species. For an off-cycle year, there is no new survey information for the shark stock complex; therefore, the 2015 estimates are used in 2016 assessment.
  • Keywords:
  • Document Type:
    Stock Assessment
  • Place as Subject:
    Alaska, Gulf of
  • Rights Information:
    Public Domain
  • Main Document Checksum:
  • File Type:
  • Supporting Files:
    No Additional Files
    1. Filetype[PDF - 1.34 MB]
      Personal Author:
      Tribuzio, Cindy A. ; Echave, Katy ; ...
      Published Date:
      2017
      Series:
      Gulf of Alaska Stock Assessments
      Description:
      The Other Rockfish (OR) complex (Table 16.1 and Figure 16.1) in the Gulf of Alaska (GOA) is assessed on a biennial stock assessment schedule to coinci...
      File Type:
      Filetype[PDF - 1.34 MB]
      File Type:
      Filetype[PDF - 1.34 MB]
    2. Filetype[PDF - 1.14 MB]
      Personal Author:
      Ormseth, Olav A. ; Conners, M.Elizabeth ;
      Published Date:
      2017
      Series:
      Gulf of Alaska Stock Assessments
      Description:
      At least seven species of octopus are found in the Gulf of Alaska (GOA). For management purposes, all octopus species are grouped into a single assemb...
      File Type:
      Filetype[PDF - 1.14 MB]
      File Type:
      Filetype[PDF - 1.14 MB]
    3. Filetype[PDF - 751.20 KB]
      Personal Author:
      Lowe, Sandra A.
      Published Date:
      2017
      Series:
      Gulf of Alaska Stock Assessments
      Description:
      Gulf of Alaska (GOA) Atka mackerel have been moved to a biennial stock assessment schedule to coincide with the availability of new survey data from t...
      File Type:
      Filetype[PDF - 751.20 KB]
      File Type:
      Filetype[PDF - 751.20 KB]
    4. Filetype[PDF - 196.91 KB]
      Personal Author:
      McGilliard, Carey R. ; Palsson, Wayne ;
      Published Date:
      2017
      Series:
      Gulf of Alaska Stock Assessments
      Description:
      The Gulf of Alaska deepwater flatfish complex (consisting of Dover sole, Greenland turbot, and deepsea sole) is assessed every four years and was last...
      File Type:
      Filetype[PDF - 196.91 KB]
      File Type:
      Filetype[PDF - 196.91 KB]
    5. Filetype[PDF - 5.63 MB]
      Personal Author:
      Bryan, Meaghan D.
      Published Date:
      2017
      Series:
      Gulf of Alaska Stock Assessments
      Description:
      The Gulf of Alaska (GOA) northern and southern rock sole assessment has been moved to a 4-year assessment cycle per the stock assessment prioritizatio...
      File Type:
      Filetype[PDF - 5.63 MB]
      File Type:
      Filetype[PDF - 5.63 MB]
    6. Filetype[PDF - 690.28 KB]
      Personal Author:
      Spies, Ingrid ; Nichol, Dan ; ...
      Published Date:
      2017
      Series:
      Gulf of Alaska Stock Assessments
      Description:
      The estimated 2018 total sculpin complex biomass in the GOA is 33,134 t. This represents a small decrease from the last full assessment in 2015. The r...
      File Type:
      Filetype[PDF - 690.28 KB]
      File Type:
      Filetype[PDF - 690.28 KB]
    7. Filetype[PDF - 1.52 MB]
      Published Date:
      2017
      Series:
      Gulf of Alaska Stock Assessments
      Description:
      The National Standard Guidelines for Fishery Management Plans published by the National Marine Fisheries Service (NMFS) require that a stock assessmen...
      File Type:
      Filetype[PDF - 1.52 MB]
      File Type:
      Filetype[PDF - 1.52 MB]
    8. Filetype[PDF - 1.36 MB]
      Personal Author:
      Olson, Andrew ; Stahl, Jennifer ; ...
      Published Date:
      2017
      Series:
      Gulf of Alaska Stock Assessments
      Description:
      The results of a preliminary statistical age-structured assessment model (ASA) are not presented this year due to personnel changes. The ASA will be p...
      File Type:
      Filetype[PDF - 1.36 MB]
      File Type:
      Filetype[PDF - 1.36 MB]
    9. Filetype[PDF - 2.45 MB]
      Personal Author:
      Ormseth, Olav A.
      Published Date:
      2017
      Series:
      Gulf of Alaska Stock Assessments
      Description:
      There are currently no target fisheries for skates in the Gulf of Alaska (GOA), and directed fishing for skates is prohibited. Incidental catches in o...
      File Type:
      Filetype[PDF - 2.45 MB]
      File Type:
      Filetype[PDF - 2.45 MB]
    10. Filetype[PDF - 11.37 MB]
      Personal Author:
      Hanselman, Dana H. ; Rodgveller, Cara J. ; ...
      Published Date:
      2017
      Series:
      Gulf of Alaska Stock Assessments
      Description:
      The longline survey abundance index increased 14% from 2016 to 2017 following a 28% increase in 2016 from 2015. The lowest point of the time series wa...
      File Type:
      Filetype[PDF - 11.37 MB]
      File Type:
      Filetype[PDF - 11.37 MB]
    11. Filetype[PDF - 829.97 KB]
      Personal Author:
      Echave, Katy ; Hulson, Peter-John ;
      Published Date:
      2017
      Series:
      Gulf of Alaska Stock Assessments
      Description:
      Gulf of Alaska rockfish are assessed on a biennial stock assessment schedule. For this on-cycle year, we incorporate new survey biomass. Following the...
      File Type:
      Filetype[PDF - 829.97 KB]
      File Type:
      Filetype[PDF - 829.97 KB]
    12. Filetype[PDF - 2.72 MB]
      Personal Author:
      McGilliard, Carey R. ; Palsson, Wayne ;
      Published Date:
      2017
      Series:
      Gulf of Alaska Stock Assessments
      Description:
      A full, age-structured assessment is presented for GOA rex sole. In previous years, the biomass estimates of the assessment were used to calculate OFL...
      File Type:
      Filetype[PDF - 2.72 MB]
      File Type:
      Filetype[PDF - 2.72 MB]
    13. Filetype[PDF - 2.52 MB]
      Personal Author:
      Turnock, Benjamin J. ; McGilliard, Carey R. ; ...
      Published Date:
      2017
      Series:
      Gulf of Alaska Stock Assessments
      Description:
      Summary of Changes in Assessment Inputs: 1) 2016-2017 catch data were added to the model and 2015 catch was updated to include October to December cat...
      File Type:
      Filetype[PDF - 2.52 MB]
      File Type:
      Filetype[PDF - 2.52 MB]
    14. Filetype[PDF - 800.54 KB]
      Personal Author:
      Turnock, Benjamin J. ; Bryan, Meaghan ; ...
      Published Date:
      2017
      Series:
      Gulf of Alaska Stock Assessments
      Description:
      Survey abundance estimates for the shallow-water complex were higher in 2017 compared to 2015 for all species except Yellowfin sole and Butter sole. T...
      File Type:
      Filetype[PDF - 800.54 KB]
      File Type:
      Filetype[PDF - 800.54 KB]
    15. Filetype[PDF - 7.61 MB]
      Personal Author:
      Barbeaux, Steven J. ; Aydin, Kerim ; ...
      Published Date:
      2017
      Series:
      Gulf of Alaska Stock Assessments
      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 ...
      File Type:
      Filetype[PDF - 7.61 MB]
      File Type:
      Filetype[PDF - 7.61 MB]
    16. Filetype[PDF - 1.95 MB]
      Personal Author:
      Hanselman, Dana H. ; Shotwell, S. Kalei ; ...
      Published Date:
      2017
      Series:
      Gulf of Alaska Stock Assessments
      Description:
      The scheduled frequency for some stock assessments was recently changed in response to the National Stock Assessment Prioritization effort (Methot 201...
      File Type:
      Filetype[PDF - 1.95 MB]
      File Type:
      Filetype[PDF - 1.95 MB]
    17. Filetype[PDF - 144.45 KB]
      Personal Author:
      Echave, Katy ; Hulson, Peter-John ;
      Published Date:
      2017
      Series:
      Gulf of Alaska Stock Assessments
      Description:
      Rockfish have historically been assessed on a biennial stock assessment schedule to coincide with the availability of new trawl survey data (odd years...
      File Type:
      Filetype[PDF - 144.45 KB]
      File Type:
      Filetype[PDF - 144.45 KB]
    18. Filetype[PDF - 3.72 MB]
      Personal Author:
      Spies, Ingrid ; Aydin, Kerim ; ...
      Published Date:
      2017
      Series:
      Gulf of Alaska Stock Assessments
      Description:
      Arrowtooth flounder biomass estimates in the current model have changed relative to the projection model estimates in 2016. The model projection of sp...
      File Type:
      Filetype[PDF - 3.72 MB]
      File Type:
      Filetype[PDF - 3.72 MB]
    19. Filetype[PDF - 2.40 MB]
      Personal Author:
      Dorn, Martin ; Aydin, Kerim ; ...
      Published Date:
      2017
      Series:
      Gulf of Alaska Stock Assessments
      Description:
      The base model projection of female spawning biomass in 2018 is 342,683 t, which is 57.5% of unfished spawning biomass (based on average post-1977 rec...
      File Type:
      Filetype[PDF - 2.40 MB]
      File Type:
      Filetype[PDF - 2.40 MB]
    20. Filetype[PDF - 877.01 KB]
      Personal Author:
      Ormseth, Olav A.
      Published Date:
      2017
      Series:
      Gulf of Alaska Stock Assessments
      Description:
      Squids in the Gulf of Alaska (GOA) are managed as a single stock complex comprising approximately 15 species. Historically squids were managed as part...
      File Type:
      Filetype[PDF - 877.01 KB]
      File Type:
      Filetype[PDF - 877.01 KB]

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Version 3.15