AFSC/RACE/MACE: Pollock Acoustic/Trawl Survey Spawning Annual Shumagins
Alaska Fisheries Science Center
Project
(PRJ)
| ID: 28143
| Published / External
Created: 2015-10-23
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Last Modified: 2022-08-09
Project (PRJ) | ID: 22353
ID: 28143
Project (PRJ)
* Discovery• First Pass
» Metadata Rubric
Item Identification
* » Title | AFSC/RACE/MACE: Pollock Acoustic/Trawl Survey Spawning Annual Shumagins |
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Short Name | Pollock Acoustic/Trawl Annual Survey Shumagins |
* Status | In Work |
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* » Abstract |
The survey’s primary objective was to collect acoustic data and trawl information to estimate midwater abundance and distribution of walleye pollock (Gadus chalcogrammus) in the Gulf of Alaska (GOA) Shumagins Region during late winter and early spring. Acoustic data were collected using five split-beam transducers (18, 38, 70, 120, and 200 kHz) and Simrad ER60 scientific echo sounders. Midwater and near-bottom acoustic backscatter was sampled using an Aleutian Wing 30/26 Trawl (AWT) and a poly Nor’eastern bottom trawl (PNE) with roller gear. This long-running survey has consistently provided data on the pollock population in the western GOA during winter and spring months. |
* Purpose |
The Shumagins region is a critical spawning ground for walleye pollock and annual surveys of pollock age structure and biomass are used to inform GOA pollock stock assesment models. In particular, there is a strong correlation between the abundance of age-1 pollock in the Shumagin Islands survey and year-class strength for the GOA region. |
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• » Organization | Alaska Fisheries Science Center |
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• » City | Seattle |
• » State/Province | WA |
• Country | USA |
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* » Support Role | Data Steward |
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* » Date Effective From | 2015-10-29 |
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Person | Towler, Rick |
Email Address | rick.towler@noaa.gov |
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* » Support Role | Distributor |
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* » Date Effective From | 2015-10-29 |
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Person | Anderson, Charles |
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325 Broadway, E/GC3 Boulder, CO 33149 |
Email Address | charles.anderson@noaa.gov |
Phone | 303-497-4742 |
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* » Support Role | Metadata Contact |
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* » Date Effective From | 2015-10-29 |
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Person | McCarthy, Abigail |
Email Address | abigail.mccarthy@noaa.gov |
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* » Date Effective From | 2015-10-29 |
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Person | McCarthy, Abigail |
Email Address | abigail.mccarthy@noaa.gov |
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Gulf of Alaska: http://www.marineregions.org/gazetteer.php?p=details&id=4312 |
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Go to https://www.ngdc.noaa.gov/mgg/wcd/ or email Anderson, Charles (charles.anderson@noaa.gov) |
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None. |
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User must read and fully comprehend the metadata prior to use. User must acknowledge the Originator when using the data set as a source. User must share data products developed using the source data set with the Originator. Data should not be used beyond the limits of the source scale. |
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» Download URL | https://www.ngdc.noaa.gov/mgg/wcd/ |
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These data were collected in accordance NOAA protocols for fisheries acoustics surveys and related sampling (Alaska Fisheries Science Center), 23 p. Prepared by Midwater Assessment and Conservation Engineering Program, Alaska Fish. Sci. Center, Natl. Mar. Fish. Serv., NOAA. Available online: http://www.afsc.noaa.gov/RACE/midwater/AFSC%20AT%20Survey%20Protocols_Feb%202013.pdf |
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Catalog Details
Catalog Item ID | 28143 |
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Metadata Record Created By | Abigail McCarthy |
Metadata Record Created | 2015-10-23 12:42+0000 |
Metadata Record Last Modified By | SysAdmin InPortAdmin |
» Metadata Record Last Modified | 2022-08-09 17:11+0000 |
Metadata Record Published | 2016-05-18 |
Owner Org | AFSC |
Metadata Publication Status | Published Externally |
Do Not Publish? | N |
Metadata Workflow State | Published / External |
Metadata Last Review Date | 2016-05-18 |
Metadata Review Frequency | 1 Year |
Metadata Next Review Date | 2017-05-18 |
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