U.S. West Coast Groundfish Bottom Trawl Survey (extent)
This layer is intended to represent information collected during NOAA Fisheries’ U.S. West Coast Groundfish Bottom Trawl Survey. The U.S. West Coast Groundfish Bottom Trawl Survey started in 1998 and is led by NMFS Northwest Fisheries Science Center. This survey provides long-term time-series data for the management of West Coast groundfishes as well as coastwide environmental sampling for monitoring change within the California Current Ecosystem. The bottom trawl survey covers West Coast waters (55-1280 meters [30-700 fathoms]) twice annually using a trawl net and a random sampling design, stratified by depth and latitude. The survey collects fishery-independent data on abundance, distribution, and biology of most species included in the west coast groundfish management plan. Weight and measurements are collected from vertebrates and invertebrates alongside various biological samples. Samples collected include otoliths and other structures for aging, finclips for genetics, gonads for reproductive analysis, and stomach contents and tissue samples for diet/stable isotope analysis. Oceanographic sensors are affixed to the trawl net, collecting data such as temperature, salinity, and dissolved oxygen for each trawl at depth.
Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| contactPoint |
{
"fn": "Whitmire, Curt",
"@type": "vcard:Contact",
"hasEmail": "mailto:curt.whitmire@noaa.gov"
}
|
| describedByType | application/octet-steam |
| description | This layer is intended to represent information collected during NOAA Fisheries’ U.S. West Coast Groundfish Bottom Trawl Survey. The U.S. West Coast Groundfish Bottom Trawl Survey started in 1998 and is led by NMFS Northwest Fisheries Science Center. This survey provides long-term time-series data for the management of West Coast groundfishes as well as coastwide environmental sampling for monitoring change within the California Current Ecosystem. The bottom trawl survey covers West Coast waters (55-1280 meters [30-700 fathoms]) twice annually using a trawl net and a random sampling design, stratified by depth and latitude. The survey collects fishery-independent data on abundance, distribution, and biology of most species included in the west coast groundfish management plan. Weight and measurements are collected from vertebrates and invertebrates alongside various biological samples. Samples collected include otoliths and other structures for aging, finclips for genetics, gonads for reproductive analysis, and stomach contents and tissue samples for diet/stable isotope analysis. Oceanographic sensors are affixed to the trawl net, collecting data such as temperature, salinity, and dissolved oxygen for each trawl at depth. |
| distribution |
[
{
"@type": "dcat:Distribution",
"title": "https://services2.arcgis.com/C8EMgrsFcRFL6LrL/arcgis/rest/services/US_West_Coast_CONUS_NMFS_At_Sea_Scientific_Surveys/FeatureServer/2",
"mediaType": "placeholder/value",
"description": "Data access URL",
"downloadURL": "https://services2.arcgis.com/C8EMgrsFcRFL6LrL/arcgis/rest/services/US_West_Coast_CONUS_NMFS_At_Sea_Scientific_Surveys/FeatureServer/2",
"describedByType": "application/octet-steam"
},
{
"@type": "dcat:Distribution",
"title": "NOAA Data Management Plan (DMP)",
"mediaType": "placeholder/value",
"description": "NOAA Data Management Plan for this record on InPort.",
"downloadURL": "https://www.fisheries.noaa.gov/inportserve/waf/noaa/nmfs/nwfsc/dmp/pdf/75762.pdf",
"describedByType": "application/octet-steam"
},
{
"@type": "dcat:Distribution",
"title": "GCMD Keyword Forum Page",
"mediaType": "placeholder/value",
"description": "Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords",
"downloadURL": "https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords",
"describedByType": "application/octet-steam"
},
{
"@type": "dcat:Distribution",
"title": "Full Metadata Record",
"mediaType": "placeholder/value",
"description": "View the complete metadata record on InPort for more information about this dataset.",
"downloadURL": "https://www.fisheries.noaa.gov/inport/item/75762",
"describedByType": "application/octet-steam"
}
]
|
| identifier | gov.noaa.nmfs.inport:75762 |
| issued | 2025-05-01T00:00:00.000+00:00 |
| keyword |
[
"CTD",
"bottom sampler",
"demersal fish",
"fishery independent",
"groundfish survey",
"California",
"Oregon",
"United States",
"Washington",
"DOC/NOAA/NMFS/NWFSC > Northwest Fisheries Science Center, National Marine Fisheries Service, NOAA. U.S. Department of Commerce",
"Story Map: NOAA Fisheries West Coast Offshore Scientific Surveys"
]
|
| landingPage | https://www.fisheries.noaa.gov/inport/item/75762 |
| language |
[]
|
| license | https://creativecommons.org/publicdomain/zero/1.0/ |
| modified | 2025-05-01T00:00:00.000+00:00 |
| publisher |
{
"name": "Northwest Fisheries Science Center",
"@type": "org:Organization"
}
|
| references |
[
"https://www.fisheries.noaa.gov/inportserve/waf/noaa/nmfs/nwfsc/dmp/pdf/75762.pdf"
]
|
| spatial | -114.791625,30.263765,-129.464302,48.5111 |
| title | U.S. West Coast Groundfish Bottom Trawl Survey (extent) |
