California Gillnet Fishery
Data Set (DS) | Southwest Fisheries Science Center (SWFSC)GUID: gov.noaa.nmfs.inport:12935 | Updated: August 9, 2022 | Published / External
Item Identification
Title: | California Gillnet Fishery |
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Status: | In Work |
Creation Date: | 1981-01-01 |
Abstract: |
This data set contains vessels, logbooks, fish size and landings data for three fleets of gillnet vessels that operate within 200 mile of the U.S. west coast, mainly in waters off California. The three fleets consist of set gillnet vessels targeting halibut and angel sharks, small-mesh drift gillnet vessels targeting white sea bass and yellowtail and large-mesh drift gillnet vessels targeting swordfish and thresher sharks. In addition, observer data are available from the large-mesh drift gillnet fleet. The data are owned by CDFW and managed jointly by CDFW and SWFSC. |
Purpose: |
The data collected from California-based drift gillnet vessels are used by CDFW, NMFS, and the Pacific Fisheries Management Council to monitor and manage the drift gillnet fishery, to collect information used in stock assessments of species caught in this fishery, to monitor the bycatch of protected species, and to fulfill the reporting obligations of the Regional Fisheries Management Organizations (RFMOs). |
Notes: |
Logbooks are mandatory and collected by the California Department of Fish and Wildlife (CDFW). Comparisons of landings and logbooks collected indicate that some logbooks are missing in some years. Landings data are collected by the CDFW (and Oregon, historically). NMFS observers collect catch, effort, bycatch, and biological data. |
Keywords
Theme Keywords
Thesaurus | Keyword |
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UNCONTROLLED | |
None | drift gillnet |
None | gillnet |
None | landings |
None | length composition |
None | logbook |
None | observer |
None | swordfish |
None | thresher shark |
Spatial Keywords
Thesaurus | Keyword |
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UNCONTROLLED | |
None | north pacific |
Physical Location
Organization: | Southwest Fisheries Science Center |
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City: | La Jolla |
State/Province: | CA |
Country: | USA |
Data Set Information
Data Set Scope Code: | Data Set |
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Data Set Type: | Database |
Maintenance Frequency: | Annually |
Data Presentation Form: | Table (digital) |
Entity Attribute Overview: |
Attributes describe areas, dates, catches, fishing effort, sizes of fish, protected species interactions |
Support Roles
Data Steward
Date Effective From: | 2008 |
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Date Effective To: | |
Contact (Person): | Gu, Yuhong |
Address: |
8901 La Jolla Shores Dr La Jolla, CA 92037 USA |
Email Address: | Yuhong.Gu@noaa.gov |
Phone: | (858) 546-7053 |
Fax: | (858) 546-7003 |
Business Hours: | M-F 8:00 - 16:30 |
Distributor
Date Effective From: | 2008 |
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Date Effective To: | |
Contact (Organization): | Southwest Fisheries Science Center (SWFSC) |
Address: |
8901 La Jolla Shores Dr. La Jolla, CA 92037 USA |
Phone: | (858)546-7000 |
URL: | http://swfsc.noaa.gov/ |
Business Hours: | 8:00-16:30 |
Metadata Contact
Date Effective From: | 2008 |
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Date Effective To: | |
Contact (Person): | Gu, Yuhong |
Address: |
8901 La Jolla Shores Dr La Jolla, CA 92037 USA |
Email Address: | Yuhong.Gu@noaa.gov |
Phone: | (858) 546-7053 |
Fax: | (858) 546-7003 |
Business Hours: | M-F 8:00 - 16:30 |
Point of Contact
Date Effective From: | 2008 |
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Date Effective To: | |
Contact (Person): | Gu, Yuhong |
Address: |
8901 La Jolla Shores Dr La Jolla, CA 92037 USA |
Email Address: | Yuhong.Gu@noaa.gov |
Phone: | (858) 546-7053 |
Fax: | (858) 546-7003 |
Business Hours: | M-F 8:00 - 16:30 |
Contact Instructions: |
Contact via email |
Extents
Currentness Reference: | Publication Date |
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Extent Group 1
Extent Group 1 / Geographic Area 1
Description |
West Bounding Coordinate: U.S. 200 mile limit East Bounding Coordinate: U.S. West Coast North Bounding Coordinate: Oregon/California border South Bounding Coordinate: U.S./Mexico border |
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Extent Group 1 / Time Frame 1
Time Frame Type: | Continuing |
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Start: | 1981-01-01 |
Description: |
logbook and landings |
Extent Group 1 / Time Frame 2
Time Frame Type: | Range |
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Start: | 1981-01-01 |
End: | 1999-12-31 |
Description: |
fish length composition |
Access Information
Security Class: | Sensitive |
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Security Classification System: |
None |
Security Handling Description: |
Hard copy data are locked in a secured area. Data are stored in files on government computers with all of the proper Government security measures in place |
Data Access Policy: |
The data are confidential and can only be presented in summarized form to the public. Researchers with appropriate clearance can access the more detailed data. |
Data Access Procedure: |
Contact point of contact. Supply official request for data and purpose of that request. |
Data Access Constraints: |
NMFS/SWFSC personnel need a signed Statement of non-disclosure agreement to access the detailed data. There are no constraints on access to summarized data. |
Data Use Constraints: |
All use of the data sets should be cleared with NMFS/SWFSC/CDFG. All products (papers, publications and data summaries) must be approved by CDFG. |
Metadata Access Constraints: |
None |
Metadata Use Constraints: |
None |
Activity Log
Activity Log 1
Activity Date/Time: | 2015-12-10 |
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Activity Type: | Update |
Responsible Party: | John Childers |
Technical Environment
Description: |
The data set was originally in DBASE/FOXPRO, converted to Access then finally placed into an Oracle HMS data system. |
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Data Quality
Representativeness: |
All vessels are required to submit logbook and landing information. Coverage should be 100%. Comparisons of logbooks and landings show that some logbook data may be missing in some years Length Composition data sampling coverage seems low but has not been evaluated. |
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Accuracy: |
Landings data are submitted by buyers and accuracy is very high. Logbook data are completed by vessel captains and can be suspect. |
Quality Control Procedures Employed: |
Data are edited by SWFSC staff |
Data Management
Have Resources for Management of these Data Been Identified?: | Yes |
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Approximate Percentage of Budget for these Data Devoted to Data Management: | Unknown |
Do these Data Comply with the Data Access Directive?: | Yes |
Is Access to the Data Limited Based on an Approved Waiver?: | Yes |
Approximate Delay Between Data Collection and Dissemination: | one year |
If Delay is Longer than Latency of Automated Processing, Indicate Under What Authority Data Access is Delayed: |
MSA |
Actual or Planned Long-Term Data Archive Location: | NCEI-CO |
Approximate Delay Between Data Collection and Archiving: | five years |
How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive?: |
Data are stored on agency servers following standard agency security policies |
Lineage
Lineage Statement: |
CDFW supplies the completed forms or data files to SWFSC for editing, data entry and maintenance |
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Acquisition Information
Instruments
Instrument 1
Identifier: | Gillnet |
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Instrument / Gear: | Gear |
Instrument Type: | Gillnets |
Description: |
Gillnets consist of vertical netting held in place by floats and weights to selectively target fish of uniform size depending on the netting size. Typical Gillnets are made of monofilament, multimonofilament, or multifilament nylon constructed of single, double, or triple netting/paneling of varying mesh sizes, depending on their use and target species. A specific mesh size will catch a target species of a limited size range, allowing this gear type to be very selective. |
Platforms
Platform 1
Identifier: | Charter vessels-small boats | ||
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Description: |
various vessels ranging in size (20-40 ft length) chartered for cetacean surveys when a NOAA small boat is not available. |
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Mounted Instrument 1 |
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Child Items
Rubric scores updated every 15m
Type | Title |
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Entity | California Gillnet Landings |
Entity | California Gillnet Logbook |
Entity | California Gillnet Size Samples |
Entity | Large-mesh Drift Gillnet Observer |
Catalog Details
Catalog Item ID: | 12935 |
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GUID: | gov.noaa.nmfs.inport:12935 |
Metadata Record Created By: | Al Coan |
Metadata Record Created: | 2012-09-05 11:50+0000 |
Metadata Record Last Modified By: | SysAdmin InPortAdmin |
Metadata Record Last Modified: | 2022-08-09 17:11+0000 |
Metadata Record Published: | 2016-01-05 |
Owner Org: | SWFSC |
Metadata Publication Status: | Published Externally |
Do Not Publish?: | N |
Metadata Last Review Date: | 2016-01-05 |
Metadata Review Frequency: | 1 Year |
Metadata Next Review Date: | 2017-01-05 |