Gear Selectivity Survey - Haddock
Cooperative Haddock/Atlantic Cod Separator Trawl Experiment (URI Sea Grant/Fishing Industry)
Haddock and cod associate in space and time in the waters of the northeast U.S. shelf. While haddock populations are healthy, Atlantic cod populations are severely depleted. Therefore, the challenge for fisherman is to harvest haddock while avoiding Atlantic cod. Haddock and Atlantic cod are known to behave differently to the approach of trawl gear, with haddock rising and cod diving.
This study was intended to evaluate the reduction of Atlantic cod bycatch while fishing for haddock with a modified trawl. This trawl was equipped with large mesh panels in the lower bellies. Two vessels were each equipped with both the experimental trawl and a control trawl. Side by side comparative tows were made, with each vessel switching between the two nets throughout each sampling day. Atlantic cod catch reductions were evaluated.
Resources
4 resources available
-
https://console.cloud.google.com/storage/browser/nmfs_odp_nefsc/PARR/FMRD/NCRP/28032
TEXT/HTML -
https://storage.googleapis.com/nmfs_odp_nefsc/PARR/PEMAD/ESB/SVDBS/SVDBS_SupportTables.zip
ZIP -
GCMD Keyword Forum Page
TEXT/HTML -
Full Metadata Record
TEXT/HTML
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Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | non-public |
| contactPoint |
{
"fn": "Kostovick, Paul",
"@type": "vcard:Contact",
"hasEmail": "mailto:paul.kostovick@noaa.gov"
}
|
| describedByType | application/octet-steam |
| description | Cooperative Haddock/Atlantic Cod Separator Trawl Experiment (URI Sea Grant/Fishing Industry) Haddock and cod associate in space and time in the waters of the northeast U.S. shelf. While haddock populations are healthy, Atlantic cod populations are severely depleted. Therefore, the challenge for fisherman is to harvest haddock while avoiding Atlantic cod. Haddock and Atlantic cod are known to behave differently to the approach of trawl gear, with haddock rising and cod diving. This study was intended to evaluate the reduction of Atlantic cod bycatch while fishing for haddock with a modified trawl. This trawl was equipped with large mesh panels in the lower bellies. Two vessels were each equipped with both the experimental trawl and a control trawl. Side by side comparative tows were made, with each vessel switching between the two nets throughout each sampling day. Atlantic cod catch reductions were evaluated. |
| distribution |
[
{
"@type": "dcat:Distribution",
"title": "https://console.cloud.google.com/storage/browser/nmfs_odp_nefsc/PARR/FMRD/NCRP/28032",
"accessURL": "https://console.cloud.google.com/storage/browser/nmfs_odp_nefsc/PARR/FMRD/NCRP/28032",
"mediaType": "text/html",
"description": "4 Files:
- 28032_UNION_FSCS_SVBIO.csv
- 28032_UNION_FSCS_SVCAT.csv
- 28032_UNION_FSCS_SVLEN.csv
- 28032_UNION_FSCS_SVSTA.csv
Data extracted on 5/8/2019",
"describedByType": "application/octet-stream"
},
{
"@type": "dcat:Distribution",
"title": "https://storage.googleapis.com/nmfs_odp_nefsc/PARR/PEMAD/ESB/SVDBS/SVDBS_SupportTables.zip",
"format": "ZIP",
"mediaType": "application/zip",
"description": "Compressed Zipped Folder contains Support Table Entities for this data set
SVDBS_SupportTables.zip contains Entities
- SVDBS_CLOUD.csv
- SVDBS_GEAR_CONDITION.csv
- SVDBS_HAUL_VALUE.csv
- SVDBS_MATURITY_CODES.csv
- SVDBS_SEX_CODES.csv
- SVDBS_STATION_VALUE.csv
- SVDBS_SVCRUISE_PURPOSE.csv
- SVDBS_SVCRUISE_STATUS.csv
- SVDBS_SVGEAR.csv
- SVDBS_SVMSTRATA.csv
- SVDBS_SV_VESSEL.csv
- SVDBS_WEATHER.csv
- SVDBS_XBT.csv
Data extracted on 8/8/2017",
"downloadURL": "https://storage.googleapis.com/nmfs_odp_nefsc/PARR/PEMAD/ESB/SVDBS/SVDBS_SupportTables.zip",
"describedByType": "application/octet-stream"
},
{
"@type": "dcat:Distribution",
"title": "GCMD Keyword Forum Page",
"accessURL": "https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords",
"mediaType": "text/html",
"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",
"describedByType": "application/octet-stream"
},
{
"@type": "dcat:Distribution",
"title": "Full Metadata Record",
"accessURL": "https://www.fisheries.noaa.gov/inport/item/28032",
"mediaType": "text/html",
"description": "View the complete metadata record on InPort for more information about this dataset.",
"describedByType": "application/octet-stream"
}
]
|
| identifier | https://data.noaa.gov/waf/NOAA/nmfs/nefsc/iso/xml/28032.xml |
| keyword |
[
"Cooperative Research",
"gear",
"haddock",
"survey",
"2005",
"2006",
"Gulf of Maine",
"Northwest Atlantic",
"Southern New England Shelf",
"benthic",
"demersal",
"pelagic",
"DOC/NOAA/NMFS/NEFSC > Northeast Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce",
"Northeast Cooperative Research Program (NCRP)"
]
|
| landingPage | https://www.fisheries.noaa.gov/inport/item/28032 |
| language |
[]
|
| license | https://creativecommons.org/publicdomain/zero/1.0/ |
| modified | 2026-04-30T00:00:00.000+00:00 |
| publisher |
{
"name": "Northeast Fisheries Science Center",
"@type": "org:Organization"
}
|
| rights | otherRestrictions, unclassified |
| spatial | -67.365783,40.657622,-69.877133,42.034 |
| title | Gear Selectivity Survey - Haddock |
