Bycatch characterization in the Pacific halibut fishery: A field test of electronic monitoring technology.
Project (PRJ) | Alaska Fisheries Science Center (AFSC)GUID: gov.noaa.nmfs.inport:7288 | Updated: November 30, 2023 | Published / External
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Summary
These data arise from a field test of electronic monitoring (EM) of vessels participating in the Pacific halibut fishery off Alaska. A side-by-side comparison was made of the hook-specific catch data reocrded by fishery observers and EM video reviewers.
There are two main components of this data: the data collected by observers and the data recorded by video reviewers (electronic monitoring). The observer data are stored in an oracle database. The hook-specific EM data have been matched to the obsever data (individual hook to individual hook) and are stored in an MS Access Database.
These data were collected during normal fishing operations onboard commercial halibut vessels fishing in the Bering Sea and Gulf of Alaska. Data collection started in April 2008 and continued through September 2008.
Project Information
Project Type
Project
Mandated By
North Pacific Research Board
Collection Type
Observer
Collection Method
Electronic and Paper
Child Items
Type | Title |
---|---|
Data Set | AFSC/FMA/NPRB Halibut Bycatch Video Field Test |
Contact Information
Metadata Contact
Doug Turnbull
doug.turnbull@noaa.gov
(206)526-4053
Extents
-180° W,
120° E,
62.08333333333° N,
42° S
GOA Gulf of Alaska
BS Bering Sea
2010-10
Item Identification
Title: | Bycatch characterization in the Pacific halibut fishery: A field test of electronic monitoring technology. |
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Short Name: | Bycatch characterization of North Pacific Halibut |
Status: | In Work |
Abstract: |
These data arise from a field test of electronic monitoring (EM) of vessels participating in the Pacific halibut fishery off Alaska. A side-by-side comparison was made of the hook-specific catch data reocrded by fishery observers and EM video reviewers. There are two main components of this data: the data collected by observers and the data recorded by video reviewers (electronic monitoring). The observer data are stored in an oracle database. The hook-specific EM data have been matched to the obsever data (individual hook to individual hook) and are stored in an MS Access Database. These data were collected during normal fishing operations onboard commercial halibut vessels fishing in the Bering Sea and Gulf of Alaska. Data collection started in April 2008 and continued through September 2008. |
Purpose: |
The goal of this project was to test the ability of EM systems to operate in a commercial setting by comparing estimates of bycatch based on data collected by an observer with estimates of bycatch based on data collected using electronic monitoring (EM). This data was collected to meet two main objectives. The first objective of this reseach were to collect catch and bycatch data collection commercial halibut fishery longline vessels using three data collection methods 1) using EM 2) using standard Alaska Fisheries Science Center Observer Program monitoring and 3) using hook-specific documentation of catch. The second objective was to evaluate the relative efficiency, cost, and bias of each of two bycatch estimation methods (EM, NMFS Observers) relative to a standard (hook-specific catch documentation) to determine their suitability for use in fisheries management. |
Other Citation Details: |
Cahalan, J. A., B. M. Leaman, G. H. Williams, B. H. Mason, W. A. Karp. 2010. Bycatch characterization in the Pacific halibut fishery: A field test of electronic monitoring technology. North Pacific Research Board Final Report 712, 58pgs. plus Appendices. |
Keywords
Theme Keywords
Thesaurus | Keyword |
---|---|
UNCONTROLLED | |
None | Alaska |
None | bycatch |
None | Electronic monitoring |
None | fishery observer |
None | hook and line fishery |
None | longline fishery |
None | Pacific halibut fishery |
Temporal Keywords
Thesaurus | Keyword |
---|---|
UNCONTROLLED | |
None | 2008 |
Spatial Keywords
Thesaurus | Keyword |
---|---|
UNCONTROLLED | |
None | BERING SEA |
None | BSAI |
None | GOA |
None | GULF OF ALASKA |
Physical Location
Organization: | Alaska Fisheries Science Center |
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City: | Seattle |
State/Province: | WA |
Country: | USA |
Location Description: |
FMA Division |
Project Information
Project Type: | Project |
---|---|
Is Mandated?: | Yes |
Mandated By: | North Pacific Research Board |
Collection Type: | Observer |
Collection Authority: | Federal |
Collection Method: | Electronic and Paper |
Support Roles
Metadata Contact
Date Effective From: | 2009-01-01 |
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Date Effective To: | |
Contact (Person): | Turnbull, Doug |
Address: |
7600 Sandpoint Way NE Seattle, WA 98115 USA |
Email Address: | doug.turnbull@noaa.gov |
Phone: | (206)526-4053 |
Fax: | (206)526-4066 |
Business Hours: | 0700-1630 |
Contact Instructions: |
206 526 4053 |
Originator
Date Effective From: | 2009-01-01 |
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Date Effective To: | |
Contact (Person): | Cahalan, Jennifer |
Email Address: | jennifer.cahalan@noaa.gov |
Phone: | 206 526 4185 |
Contact Instructions: |
206 526 4185 |
Extents
Currentness Reference: | Publication Date |
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Extent Group 1
Extent Group 1 / Geographic Area 1
W° Bound: | -180 | |
---|---|---|
E° Bound: | 120 | |
N° Bound: | 62.08333333333 | |
S° Bound: | 42 | |
Description |
GOA Gulf of Alaska BS Bering Sea |
Extent Group 1 / Time Frame 1
Time Frame Type: | Discrete |
---|---|
Start: | 2010-10 |
Access Information
Security Class: | Confidential |
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Data Access Policy: |
Aggredated data may be provided with proper confidentiality doncuments to other researchers |
Data Access Constraints: |
These are confidential data and may not be made available in unaggregated form without proper confidentiality documents on file with FMA Division. |
Technical Environment
Description: |
Comparison of species identification of catch between standard observer estimation, complete hook-status observer coverage, and EM coverage showed statistically unbiased and acceptable comparability for almost all species except for some that could not be identified beyond the species grouping levels used in management. Similarly, comparisons of total species-specific numbers of fish estimated using EM-collected and hook-status observer-collected data showed few statistically significant differences. |
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Acronyms
NPRB | North Pacific Research Board |
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Child Items
Rubric scores updated every 15m
Type | Title | |
---|---|---|
Data Set | AFSC/FMA/NPRB Halibut Bycatch Video Field Test |
Catalog Details
Catalog Item ID: | 7288 |
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GUID: | gov.noaa.nmfs.inport:7288 |
Metadata Record Created By: | Doug Turnbull |
Metadata Record Created: | 2008-03-26 14:28+0000 |
Metadata Record Last Modified By: | SysAdmin InPortAdmin |
Metadata Record Last Modified: | 2023-11-30 18:11+0000 |
Metadata Record Published: | 2016-05-18 |
Owner Org: | AFSC |
Metadata Publication Status: | Published Externally |
Do Not Publish?: | N |
Metadata Last Review Date: | 2016-05-18 |
Metadata Review Frequency: | 1 Year |
Metadata Next Review Date: | 2017-05-18 |