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    • Cetacean visual observations using line-transect survey methods onboard the NOAA Ship Gordon Gunter (GU) in the Gulf of Mexico (survey GU0402) from 2004-04-15 to 2004-06-10. (NCEI Accession 0284773)

    Metadata Updated: November 1, 2024

    The U.S. National Marine Fisheries Service (NMFS) is required to prepare an annual Stock Assessment Report (SAR) for each marine mammal stock to update abundance, stock structure, maximum net productivity, human-caused mortality, potential biological removal (PBR), and status.

    In the summer of 2004, the Southeast Fisheries Science Center (SEFSC) conducted a marine mammal survey in the northern Gulf of Mexico (GMx). Operations occurred in the waters from 200 m deep seaward to the Exclusive Economic Zone (EEZ) from Brownsville, Texas east into the Straits of Florida. The survey was designed using ship-based, line-transect methods in which experienced marine mammal observers visually located marine mammals, identified the species (to the lowest taxonomic level possible) and counted the number of whales and dolphins sighted along predetermined tracklines. A sighting constitutes a group of marine mammals (whales and dolphins) seen at the same location and time. This dataset includes marine mammal visual observation data and effort points with surveying conditions that can be used in abundance and density modeling per visual line-transect survey protocols. This dataset also includes opportunistic marine mammal photographs and information on biopsy samples collected during the survey.

    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 October 3, 2024
    Metadata Created Date June 4, 2024
    Metadata Updated Date November 1, 2024
    Reference Date(s) 2023 (publication)
    Frequency Of Update

    Metadata Source

    Harvested from NMFS SEFSC

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Date October 3, 2024
    Metadata Created Date June 4, 2024
    Metadata Updated Date November 1, 2024
    Reference Date(s) 2023 (publication)
    Responsible Party (Point of Contact, Custodian)
    Contact Email
    Guid gov.noaa.nmfs.inport:26498
    Access Constraints Cite As: Southeast Fisheries Science Center, [Date of Access]: Cetacean visual observations using line-transect survey methods onboard the NOAA Ship Gordon Gunter (GU) in the Gulf of Mexico (survey GU0402) from 2004-04-15 to 2004-06-10. (NCEI Accession 0284773) [Data Date Range], https://www.fisheries.noaa.gov/inport/item/26498., Access Constraints: None
    Bbox East Long -81.2005
    Bbox North Lat 29.4995
    Bbox South Lat 23.859
    Bbox West Long -96.4453
    Coupled Resource
    Frequency Of Update
    Harvest Object Id fd802756-971f-43b7-abc1-79e0e4cdfd1f
    Harvest Source Id ca759a40-507d-4d0c-8f8c-64b3c5e05066
    Harvest Source Title NMFS SEFSC
    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
    Metadata Language eng
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-96.4453, 23.859], [-81.2005, 23.859], [-81.2005, 29.4995], [-96.4453, 29.4995], [-96.4453, 23.859]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 2004-04-15
    Temporal Extent End 2004-06-10

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