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NPRB 1117 Cooperative research to develop new trawl footrope designs to reduce mortality of southern Tanner and snow crabs (Chionoecetes bairdi and C. opilio) incidental to Bering Sea bottom trawl fisheries

Metadata Updated: September 2, 2022

Alaska’s Bering Sea is home to some of the world’s most productive groundfish and crab stocks and the fisheries that depend on them. Their spatial overlap creates problems when bottom trawls affect crabs in their paths, either through capture and discard or damage to crabs that remain on the seafloor. We worked with Bering Sea bottom trawlers to develop and test changes to trawl footropes to minimize crab mortality, by reducing damage to crabs that are not caught, and maintaining low crab capture rates. A previous NPRB project (0711) showed that crab mortality from herding cables ahead of trawls could be greatly reduced with simple modifications to raise them above the seafloor. This project did the same for trawl footropes, the part of the trawl located between the leading edge of the trawl net and the seafloor. Such gear changes allow crab mortality to be reduced without restricting trawling to the few areas of the Bering Sea without crabs.

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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.

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Dates

Metadata Date August 9, 2022
Metadata Created Date November 12, 2020
Metadata Updated Date September 2, 2022
Reference Date(s) (publication)
Frequency Of Update unknown

Additional Metadata

Resource Type Dataset
Metadata Date August 9, 2022
Metadata Created Date November 12, 2020
Metadata Updated Date September 2, 2022
Reference Date(s) (publication)
Responsible Party (Point of Contact, Custodian)
Contact Email
Guid gov.noaa.nmfs.inport:28425
Access Constraints Cite As: Alaska Fisheries Science Center, [Date of Access]: NPRB 1117 Cooperative research to develop new trawl footrope designs to reduce mortality of southern Tanner and snow crabs (Chionoecetes bairdi and C. opilio) incidental to Bering Sea bottom trawl fisheries [Data Date Range], https://www.fisheries.noaa.gov/inport/item/28425., Access Constraints: "FISMA Controls are in place to protect stored data from unauthorized access and/or disclosure" |
Coupled Resource
Frequency Of Update unknown
Harvest Object Id 30ed81ec-9bf9-408b-a633-a583dfe9b8e7
Harvest Source Id 26a29bb9-50b0-47fd-920b-edc74aa6ec76
Harvest Source Title NMFS AFSC
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.
Metadata Language eng
Metadata Type geospatial
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 2011
Temporal Extent End 2014

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