Eastern Pacific Ocean Purse-seine Fishery
Southwest Fisheries Science Center
Data Set
(DS)
| ID: 2321
| Published / External
Created: 2006-07-17
|
Last Modified: 2022-08-09
Project (PRJ) | ID: 1884
ID: 2321
Data Set (DS)
* Discovery• First Pass
» Metadata Rubric
Item Identification
* » Title | Eastern Pacific Ocean Purse-seine Fishery |
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Short Name | |
* Status | In Work |
Creation Date | 1959 |
Revision Date | |
• Publication Date | |
* » Abstract |
This data set contains vessel logbook and landings data sets from U.S.A.-flagged purse-seine vessels fishing in the Eastern Pacific Ocean (EPO). These purse seiners range in size from small coastal vessels to large offshore vessels. Historically, California-based large purse-seine vessels targeted tropical tunas in the Eastern Tropical Pacific (ETP), but these vessels have moved to the western-central Pacific Ocean (see WCPO Purse-seine Fishery) and only occasionally fish in the EPO. Smaller coastal purse-seine vessels target sardine, anchovy, mackerel, and other coastal pelagic species (CPS), but opportunistically fish for bluefin tuna when they are available in the California Bight. Logbook and landings data have been collected from 1952 - present by the Inter-American Tropical Tuna Commission (IATTC). Large purse-seine vessels carry biological observers to monitor interactions with dolphins as a requirement of the Marine Mammals Protection Act and other bycatch species. The IATTC manages the observer program, however historical NMFS observer data are managed by the SWFSC Protected Resources Division. |
* Purpose |
Data gathered from the EPO purse-seine fishery are used in analyses of the status of tunas in the EPO. Catch data are used to monitor the status of key tuna stocks. |
Notes |
Large purse-seine vessels that wish to fish in the EPO must register on the IATTC vessel registry (or opt for one trip per year) and carry an IATTC observer (or cross-over endorsed observer from the WCPO). Data are collected by NMFS and IATTC for these trips. Coastal purse-seine vessels that plan to target HMS must register with the IATTC vessel registry, be permitted by NMFS, and carry an IATTC logbook. Comparisons of landings and logbooks collected indicate that some logbooks are missing in some years for small coastal vessels. |
Other Citation Details | |
• Supplemental Information |
Public domain data (catch by year, flag, gear, species) for the EPO Purse-seine fishery can be accessed on the IATTC website. IATTC also has data on size composition (port sampling), observers, and tagging. Historical NMFS observer data is managed by the SWFSC Protected Resources Division. |
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Keywords
Theme Keywords
Thesaurus | Keyword |
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None | IAATC |
None | landings |
None | length frequency |
None | logbook |
None | purse seine |
None | skipjack |
None | yellowfin |
Temporal Keywords
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* Spatial Keywords
Thesaurus | Keyword |
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None | Eastern Pacific Ocean |
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Physical Location
• » Organization | Southwest Fisheries Science Center |
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• » City | La Jolla |
• » State/Province | CA |
• Country | USA |
• » Location Description |
Data Set Information
* Data Set Scope Code | Data Set |
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• Data Set Type | Database |
• Maintenance Frequency | As Needed |
Maintenance Note | |
» Data Presentation Form | Table (digital) |
• Entity Attribute Overview |
Attributes describe areas, dates, catches, fishing effort, sizes of fish. |
Entity Attribute Detail Citation | |
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Distribution Liability | |
Data Set Credit |
Support Roles
* » Support Role | Data Steward |
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* » Date Effective From | 2008 |
Date Effective To | |
Person | Childers, John |
Address |
8901 La Jolla Shores Dr La Jolla, CA 92037 |
Email Address | john.childers@noaa.gov |
Phone | (858)546-7192 |
Fax | (858)546-7003 |
Mobile | |
URL | |
Business Hours | 7:00 a.m. - 4:30 p.m. |
Contact Instructions |
* » Support Role | Distributor |
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* » Date Effective From | 2008 |
Date Effective To | |
Organization | Southwest Fisheries Science Center (SWFSC) |
Address |
8901 La Jolla Shores Dr. La Jolla, CA 92037 USA |
Email Address | |
Phone | (858)546-7000 |
Fax | |
Mobile | |
URL | http://swfsc.noaa.gov/ |
Business Hours | 8:00-16:30 |
Contact Instructions |
* » Support Role | Metadata Contact |
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* » Date Effective From | 2008 |
Date Effective To | |
Person | Childers, John |
Address |
8901 La Jolla Shores Dr La Jolla, CA 92037 |
Email Address | john.childers@noaa.gov |
Phone | (858)546-7192 |
Fax | (858)546-7003 |
Mobile | |
URL | |
Business Hours | 7:00 a.m. - 4:30 p.m. |
Contact Instructions |
* » Support Role | Point of Contact |
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* » Date Effective From | 2008 |
Date Effective To | |
Person | Childers, John |
Address |
8901 La Jolla Shores Dr La Jolla, CA 92037 |
Email Address | john.childers@noaa.gov |
Phone | (858)546-7192 |
Fax | (858)546-7003 |
Mobile | |
URL | |
Business Hours | 7:00 a.m. - 4:30 p.m. |
Contact Instructions |
Contact via email |
* » Support Role | Point of Contact |
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* » Date Effective From | 2003-09-15 |
Date Effective To | 2008 |
Person | Coan, Al |
Address |
8901 La Jolla Shores Dr. La Jolla, CA 92037 |
Email Address | al.coan@noaa.gov |
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Extents
Currentness Reference | Historical data set |
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Extent Group 1
Extent Description |
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Extent Group 1 / Geographic Area 1
* » W° Bound | |
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* » E° Bound | |
* » N° Bound | |
* » S° Bound | |
* » Description |
Eastern Pacific Ocean |
Extent Group 1 / Vertical Extent
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Extent Group 1 / Time Frame 1
* » Time Frame Type | Continuing |
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* » Start | 1959 |
End | |
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Description |
Spatial Information
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Reference Systems
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Access Information
Data License | |
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Data License URL | |
Data License Statement | |
* » Security Class | Sensitive |
* Security Classification System | |
Security Handling Description | |
• 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 personnel need a signed non-disclosure agreement statement to access the detailed data. There are no constraints on access to summarized data. |
• Data Use Constraints | |
Metadata Access Constraints | |
Metadata Use Constraints |
Distribution Information
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» Download URL | |
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URLs
URL | https://www.iattc.org/PublicDomainData/PublicPSTuna.zip |
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Name | PublicPSTuna.zip |
URL Type | Online Resource |
File Resource Format | ZIP |
Description |
Tuna EPO purse seine catch and effort aggregated by year, month, flag or set type, 1°x1° |
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Activity Log
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Issues
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Technical Environment
Description |
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Data Quality
Representativeness |
coverage rates vary by year but are generally greater than 50%. Large purse seine vessels are required to submit logbook data to IATTC and sometimes required to carry IATTC observers. |
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Accuracy | |
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Conceptual Consistency | |
» Quality Control Procedures Employed |
Data are edited by IATTC staff. Data are also edited by SWFSC in cooperation with IATTC |
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 |
» If Distributor (Data Hosting Service) is Needed, Please Indicate | |
» 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 |
Logbook data are supplied directly to IATTC and shared with SWFSC on an ad-hoc basis. Size data are collected by IATTC. Landings outside the USA are collected and maintained by IATTC |
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Sources
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Acquisition Information
Instruments
Identifier | Purse Seine |
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Docucomp UUID | |
Instrument / Gear | Gear |
Instrument Type | Seine Nets |
Description |
A purse seine is a large wall of netting deployed around an entire area or school of fish. A purse seine has rings along the bottom of the net through which a drawstring cable is threaded. Once a school of fish is located, the vessel encircles the school with the net. The cable is then pulled in, ‘pursing’ the net closed on the bottom, preventing fish from escaping by swimming downward. |
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Platforms
Identifier | Charter vessels-small boats | ||
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Docucomp UUID | |||
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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FAQs
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Child Items
Rubric scores updated every 15m
Score | Type | Title |
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Entity (ENT) | Eastern Pacific Ocean Purse-seine Landings Data | |
Entity (ENT) | Eastern Pacific Ocean Purse-seine Logbook Data | |
Related Items
Item Type | Relationship Type | Title |
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Catalog Details
Catalog Item ID | 2321 |
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Metadata Record Created By | Karen L Sender |
Metadata Record Created | 2006-07-17 13:10+0000 |
Metadata Record Last Modified By | SysAdmin InPortAdmin |
» Metadata Record Last Modified | 2022-08-09 17:10+0000 |
Metadata Record Published | 2016-01-05 |
Owner Org | SWFSC |
Metadata Publication Status | Published Externally |
Do Not Publish? | N |
Metadata Workflow State | Published / External |
Metadata Last Review Date | 2016-01-05 |
Metadata Review Frequency | 1 Year |
Metadata Next Review Date | 2017-01-05 |
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