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Dataset Overview | National Centers for Environmental Information (NCEI)

Cod by-catch reducing gear: video observations of fish behavior from Fishing Vessels NEC-MP2000-2 in the Gulf of Maine from 2000-2002 (NEC-CoopRes project) (NCEI Accession 0278380)

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This dataset contains biological and survey - biological data collected on Fishing Vessels during cruise NEC-MP2000-2 from 2000-12-04 to 2001-01-05. These data include species. The instruments used to collect these data include Beam Trawl. These data were collected by Michael Pol of Massachusetts Division of Marine Fisheries as part of the "Northeast Consortium: Cooperative Research (NEC-CoopRes)" project and "NorthEast Consortium (NEC)" program. The Biological and Chemical Oceanography Data Management Office (BCO-DMO) submitted these data to NCEI on 2020-01-22.

The following is the text of the dataset description provided by BCO-DMO:

Cod by-catch reducing gear: video observations of fish behavior

Dataset Description:
"Groundfish Trawl nets Designed to Reduce the Bycatch of Cod": Fishing log of experimental tows included in analysis.

Project Leader:Michael Pol Massachusetts Division of Marine Fisheries

final report

Two experimental trawl net designs substantially reduced catch rates of Atlantic cod Gadus morhua while allowing the targeting of flatfish Pleuronectidae, as compared to a standard net design. The "Ribas" and "topless" nets both modify the top half of a trawl net; the Ribas net by using large square mesh; the topless net by removing much of the netting in the top square of the net. Seventy pairs of alternate tows showed reductions of cod catch rates (kg/hr) that exceeded 76% for both nets. Catch rates of yellowtail flounder Limanda ferruginea below MLS (~33 cm TL) were more than 74% lower for both nets, compared to a standard flatfish trawl. Reductions of catch rates for winter flounder Pseudopleuronectes americanus below MLS (~33 cm TL) exceeded 61%. Significant reductions occurred in catch above MLS for yellowtail (>32%) and winter flounders (>44%) with some evidence that this reduction was lower for the topless trawl. Underwater video showed cod exiting the nets through the top mesh and through the gap made by the removal of twine. These results demonstrate that separation of Atlantic cod from flatfish is possible and practical. (from final report abstract)

associated datasets:
  • Cite as: Pol, Michael (2023). Cod by-catch reducing gear: video observations of fish behavior from Fishing Vessels NEC-MP2000-2 in the Gulf of Maine from 2000-2002 (NEC-CoopRes project) (NCEI Accession 0278380). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0278380. Accessed [date].
gov.noaa.nodc:0278380
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Distributor NOAA National Centers for Environmental Information
+1-301-713-3277
NCEI.Info@noaa.gov
Dataset Point of Contact NOAA National Centers for Environmental Information
ncei.info@noaa.gov
Time Period 2000-12-04 to 2001-01-05
Spatial Bounding Box Coordinates
West: -70.5
East: -65.5
South: 42
North: 44.6
Spatial Coverage Map
General Documentation
Associated Resources
  • Biological, chemical, physical, biogeochemical, ecological, environmental and other data collected from around the world during historical and contemporary periods of biological and chemical oceanographic exploration and research managed and submitted by the Biological and Chemical Oceanography Data Management Office (BCO-DMO)
    • NCEI Collection
      Navigate directly to the URL for data access and direct download.
  • video observations of fish behavior from Fishing Vessels NEC-MP2000-2 in the Gulf of Maine from 2000-2002 (NEC-CoopRes project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). Dataset version 2009-06-25. https://doi.org/10.1575/1912/bco-dmo.3144.1
    • Parent ID (indicates this dataset is related to other data):
    • gov.noaa.nodc:BCO-DMO
Publication Dates
  • publication: 2023-05-18
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status Complete - production of the data has been completed
Historical archive - data has been stored in an offline storage facility
Data Update Frequency As needed
Supplemental Information
Acquisition Description:
Two trawl nets, the "Ribas net" and a Faroe Island design prototype, were constructed and tested at sea on a commercial vessel, against a conventional two-seam groundfish net, which served as a control. The two experimental nets both modify the top half of a trawl net; the Ribas by using large square mesh and the Faroese by removing much of the twine at the top of the net. The project goal was to reduce cod as bycatch up to 75-90% (and perhaps dogfish (Squalus acanthias) bycatch as well). This net was designed to target the following species: yellow tail flounder (Pleuronectes ferruginea), winter flounder (Pleuronectes americanus), American plaice (Hippoglossoides platessoides), windowpane flounder (Glyptocephalus cynoglossus), and skate (Rajidea).

Seventy pairs of alternate tows with the control net resulted in reductions of cod bycatch of >76% for both nets. Catch rates of sublegal yellowtail flounder were also >74% lower for both nets compared to the control. There were, however, reductions in the legal catch of yellowtail and winter flounders. Underwater video showed cod exiting the nets through the top mesh or gap made by removal of the twine. The results of this project have been presented to the New England Fishery Management Council Multispecies Plan Development Team, which encouraged participants to demonstrate the performance of the Ribas net in off-shore areas. The participants have continued the research with Saltonstall-Kennedy funding. However, modified versions of both nets were included as options in Amendment 13 to the Groundfish Fishery Management Plan. (from final report )
Purpose This dataset is available to the public for a wide variety of uses including scientific research and analysis.
Use Limitations
  • accessLevel: Public
  • Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
Dataset Citation
  • Cite as: Pol, Michael (2023). Cod by-catch reducing gear: video observations of fish behavior from Fishing Vessels NEC-MP2000-2 in the Gulf of Maine from 2000-2002 (NEC-CoopRes project) (NCEI Accession 0278380). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0278380. Accessed [date].
Cited Authors
Principal Investigators
  • Michael Pol
    Massachusetts Division of Marine Fisheries
Resource Providers
Points of Contact
Publishers
Acknowledgments
  • Funding provided by National Oceanic and Atmospheric Administration (NOAA) Award Number: unknown NEC-CoopRes NOAA
Theme keywords NODC DATA TYPES THESAURUS NODC OBSERVATION TYPES THESAURUS WMO_CategoryCode
  • oceanography
BCO-DMO Standard Parameters Originator Parameter Names
Data Center keywords NODC SUBMITTING INSTITUTION NAMES THESAURUS Global Change Master Directory (GCMD) Data Center Keywords
Platform keywords BCO-DMO Platform Names Global Change Master Directory (GCMD) Platform Keywords
Instrument keywords NODC INSTRUMENT TYPES THESAURUS BCO-DMO Standard Instruments Global Change Master Directory (GCMD) Instrument Keywords Originator Instrument Names
Place keywords Provider Place Names
Project keywords BCO-DMO Standard Programs BCO-DMO Standard Projects Provider Cruise IDs Provider Funding Award Information
  • Funding provided by National Oceanic and Atmospheric Administration (NOAA) Award Number: unknown NEC-CoopRes NOAA
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • Cite as: Pol, Michael (2023). Cod by-catch reducing gear: video observations of fish behavior from Fishing Vessels NEC-MP2000-2 in the Gulf of Maine from 2000-2002 (NEC-CoopRes project) (NCEI Accession 0278380). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0278380. Accessed [date].
Data License
Access Constraints
  • Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
Fees
  • In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.
Lineage information for: dataset
Processing Steps
  • 2023-05-18T03:54:30Z - NCEI Accession 0278380 v1.1 was published.
Output Datasets
Acquisition Information (collection)
Instrument
  • trawl
Last Modified: 2024-05-14T17:55:11Z
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