Inshore Lobster Trawl Survey
An annual trawl survey is conducted in Southwestern Nova Scotia and the Bay of Fundy to assess the lobster stocks in the area. The survey is conducted with the Northeast Fisheries Science Center Ecosystem Survey Trawl (NEST), a small mesh trawl with a cod end liner, which ensures the capture of various sizes of lobster. The dimensions and location of the trawl are monitored and recorded throughout the tow using an electronic trawl mensuration system. In addition, water temperature and depth are also monitored. The target tow length is 1 kilometer which is tracked using an Olex marine charting system. Vessel crew, DFO science staff and a contracted at sea observer work together to perform required tasks and collect all relevant data. Catch from each tow is separated by species, weighed and counted. Length frequency data is collected on select groundfish and crab species and detailed morphometric data is collected on each lobster.
PARAMETERS COLLECTED:
Set information and profile - includes set date, time depth and location
Catch summary - weight and number caught of each species
Length Freqeuncies - completed for up to 100 fish for selected species
Lobster Morphological Data - detailed data collected on each lobster
Bottom Temperature
Trawl Metrics
NOTES ON QUALITY CONTROL:
Data is visually verified and double keypunched. On loading to Oracle, data is run through rigorous automated checks to verify data accuracy and integrity.
SAMPLING METHODS:
The target tow length is 1 kilometer which is tracked using an Olex marine charting system. Vessel crew, DFO science staff and a contracted at sea observer work together to perform required tasks and collect all relevant data. Catch from each tow is separated by species, weighed and counted. Length frequency data is collected on select groundfish and crab species, detailed morphometric data is collected on each lobster. Bottom temperature and trawl metrics are collected for each tow.
CITATION LIST:
Denton, Cheryl M.. 2020. Maritimes Region Inshore Lobster Trawl Survey Technical Description. Canadian technical reports of fisheries and aquatic sciences (DFO) 3376.
Datasets available for download
Additional Info
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| Last Updated | October 20, 2025, 02:42 (UTC) |
| Created | October 20, 2025, 02:42 (UTC) |
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Domain / Topic
Domain or topic of the dataset being cataloged.
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Oceans |
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Title
Title for the Dataset.
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Inshore Lobster Trawl Survey |
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Description
A description of the dataset.
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An annual trawl survey is conducted in Southwestern Nova Scotia and the Bay of Fundy to assess the lobster stocks in the area. The survey is conducted with the Northeast Fisheries Science Center Ecosystem Survey Trawl (NEST), a small mesh trawl with a cod end liner, which ensures the capture of various sizes of lobster. The dimensions and location of the trawl are monitored and recorded throughout the tow using an electronic trawl mensuration system. In addition, water temperature and depth are also monitored. The target tow length is 1 kilometer which is tracked using an Olex marine charting system. Vessel crew, DFO science staff and a contracted at sea observer work together to perform required tasks and collect all relevant data. Catch from each tow is separated by species, weighed and counted. Length frequency data is collected on select groundfish and crab species and detailed morphometric data is collected on each lobster. PARAMETERS COLLECTED: Set information and profile - includes set date, time depth and location Catch summary - weight and number caught of each species Length Freqeuncies - completed for up to 100 fish for selected species Lobster Morphological Data - detailed data collected on each lobster Bottom Temperature Trawl Metrics NOTES ON QUALITY CONTROL: Data is visually verified and double keypunched. On loading to Oracle, data is run through rigorous automated checks to verify data accuracy and integrity. SAMPLING METHODS: The target tow length is 1 kilometer which is tracked using an Olex marine charting system. Vessel crew, DFO science staff and a contracted at sea observer work together to perform required tasks and collect all relevant data. Catch from each tow is separated by species, weighed and counted. Length frequency data is collected on select groundfish and crab species, detailed morphometric data is collected on each lobster. Bottom temperature and trawl metrics are collected for each tow. CITATION LIST: Denton, Cheryl M.. 2020. Maritimes Region Inshore Lobster Trawl Survey Technical Description. Canadian technical reports of fisheries and aquatic sciences (DFO) 3376. |
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Metadata Identifier
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Published Date
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2021-01-13 |
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Time Period Data Span (end date)
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GeoSpatial Area Data Span
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Access category
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License
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Open Government Licence - Canada |
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Limits on use
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Location
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https://open.canada.ca/data/en/dataset/190276ba-29ea-4b3b-be74-757d0eb896f2 |
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Data Service
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Owner
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Fisheries and Oceans Canada | Pêches et Océans Canada |
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Contact Point
Who to contact regarding access?
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Government of Canada; Fisheries and Oceans Canada, DFO.MAR-PED-Data-Request-Demande-de-donnes-DEP-MAR.MPO@dfo-mpo.gc.ca |
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Contact Point Email
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Publisher
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Publisher Email
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[email protected] |
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Author
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Author Email
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Accessed At
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Identifier
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Globally Unique Identifier
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Contains data about individuals
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Contains data about identifiable individuals
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Contains Indigenous Data
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Platform type of the source portal.
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Version
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None |
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Source
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None |
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Version notes
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GeoSpatial resolution in meters
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GeoSpatial resolution (in regions)
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Indigenous Community Permission
Who holds the Indigenous Community Permission. Who to contact regarding access to a dataset that has data about Indigenous communities.
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Community Permission
Community permission (who gave permission).
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The Indigenous communities the dataset is about
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Number of data rows
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