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    • Cooperative Research Paired Trawl Sweep Comparison Study

    Metadata Updated: June 21, 2024

    In the spring of 2009, Northeast Fisheries Science Center (NEFSC) replaced the previous standard bottom trawl gear (Yankee 36) with a new standard survey trawl designed in close collaboration with the fishing industry and local net manufacturers. Some stakeholders expressed concern that the rockhopper sweep introduced with this gear was not suitable for the efficient capture of flatfish and could therefore bias survey estimates. To address this question, a paired trawl experiment was conducted during the fall of 2009 and the spring and fall of 2010 aboard three chartered fishing vessels, the Mary K, the Moragh K, and the Endurance. The new standard survey trawl with rockhopper sweep was compared with an identical net with a 3” cookie sweep using paired tows between 2 vessels. Results in general showed significantly more flatfish caught with the cookie sweep, although differences in size distributions between the two sweeps were negligible in most cases.

    Access & Use Information

    License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Date February 29, 2024
    Metadata Created Date June 21, 2024
    Metadata Updated Date June 21, 2024
    Reference Date(s) (publication)
    Frequency Of Update asNeeded

    Metadata Source

    Harvested from NMFS NEFSC

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Date February 29, 2024
    Metadata Created Date June 21, 2024
    Metadata Updated Date June 21, 2024
    Reference Date(s) (publication)
    Responsible Party (Point of Contact, Custodian)
    Contact Email
    Guid gov.noaa.nmfs.inport:27384
    Access Constraints Cite As: Northeast Fisheries Science Center, [Date of Access]: Cooperative Research Paired Trawl Sweep Comparison Study [Data Date Range], https://www.fisheries.noaa.gov/inport/item/27384., Access Constraints: User must read and fully comprehend the metadata prior to use. Applications or inferences derived from the data should be carefully considered for accuracy. NEFSC Data Access Constraint: If data is stored on an internal NEFSC network, the requester may not have direct access to query the data unless they are also authorized for network access., Use Constraints: Acknowledgement of NOAA/NMFS/NEFSC, as the source from which these data were obtained in any publications and/or other representations of these, data is suggested.
    Bbox East Long -66.955583
    Bbox North Lat 44.691317
    Bbox South Lat 41.108983
    Bbox West Long -70.865883
    Coupled Resource
    Frequency Of Update asNeeded
    Harvest Object Id cb0cca06-effe-48e0-bfb0-fe811c660a2e
    Harvest Source Id 523189fa-8edc-48e1-9ec5-f571e7dd923c
    Harvest Source Title NMFS NEFSC
    Licence NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose.
    Lineage Vessel sensor data were collected electronically using SCS. Catch and biological data were collected electronically using FSCS 1.6. At the completion of the cruise, a database copy was inserted into the shoreside database.
    Metadata Language eng
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-70.865883, 41.108983], [-66.955583, 41.108983], [-66.955583, 44.691317], [-70.865883, 44.691317], [-70.865883, 41.108983]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 2009-10-29
    Temporal Extent End 2010-11-03

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