Mobile gear sentinel fisheries program - northern Gulf of St. Lawrence
In place since 1994 in eastern Canada, the sentinel fisheries program is the result of a collaboration between Fisheries and Oceans Canada (DFO) and commercial fishermen. Under this program, contracts are awarded by tender to fishermen to carry out fishing activities according to scientific protocols developed by DFO.
Description of mobile surveys
The mobile gear sentinel fisheries of the northern Gulf of St. Lawrence are conducted in the divisions 4R, 4S, 3Pn and the northern part of the division 4T of the Northwest Atlantic Fisheries Organization (NAFO). This program follows a stratified random survey plan according to depth strata. A standard tow is 30 minutes long and made at a speed of 2.5 knots. The fishing gear is a 300 Star Balloon trawl mounted on a Rock Hopper footgear. The trawl mesh size is 145 mm with a liner of 40 mm in the codend. Data are collected by at-sea fisheries observers from Biorex (Quebec) or Seawatch (Newfoundland).
Data
For each trait, the total catch is sorted and weighed by species. Biological data such as length, weight (sampled, per individual, gonad, liver and stomach), sex and maturity are then collected on a subsample of many species such as Atlantic halibut, Greenland halibut, lumpfish, Atlantic cod, herring and capelin. Otoliths are only sampled on Atlantic cod.
The catches per tow (presence or absence, count by species, length frequency and catch weight (kg)) for the Atlantic halibut, Greenland halibut, Atlantic cod and redfish are available below. This data is also available via the 'Biodiversity' application on the St. Lawrence Global Observatory (SLGO) website.
* The most recent survey is not available
** This record consist of raw data and quality has not been verified
Simple
- Date ( RI_367 )
- 2019
- Date ( RI_366 )
- 2019
- Date ( RI_368 )
- 2024
- Status
- onGoing; enContinue RI_596
- Maintenance and update frequency
- asNeeded; auBesoin RI_540
- Keywords ( RI_525 )
-
- Gulf of St. Lawrence
- Keywords ( RI_530 )
-
- Sentinel fisheries
- Government of Canada Core Subject Thesaurus Thésaurus des sujets de base du gouvernement du Canada ( RI_528 )
-
- Marine biology
- Aquatic wildlife
- Aquatic ecosystems
- Oceans
- Fish
- Fisheries management
- Classification
- unclassified; nonClassifié RI_484
- Use limitation
- Open Government Licence - Canada (http://open.canada.ca/en/open-government-licence-canada)
- Access constraints
- license; licence RI_606
- Use constraints
- license; licence RI_606
- Spatial representation type
- vector; vecteur RI_635
- Metadata language
- eng
- Metadata language
- fra
- Character set
- utf8; utf8 RI_458
- Topic category
-
- Biota
- Begin date
- 1994
))
- Reference system identifier
- https://epsg.io/ / EPSG:4326 /
- Distribution format
-
-
CSV
(
unknown
)
-
CSV
(
unknown
)
- OnLine resource
-
Biodiversity application
(
HTTP
)
Application;HTML;eng,fra
- OnLine resource
-
Mobile gear catches
(
HTTPS
)
Dataset;CSV;eng
- OnLine resource
-
Mobile gear catches
(
HTTPS
)
Dataset;CSV;fra
- OnLine resource
-
Mobile gear length frequency
(
HTTPS
)
Dataset;CSV;eng
- OnLine resource
-
Mobile gear length frequency
(
HTTPS
)
Dataset;CSV;fra
- OnLine resource
-
Mobile gear metadata
(
HTTPS
)
Dataset;CSV;eng
- OnLine resource
-
Mobile gear metadata
(
HTTPS
)
Dataset;CSV;fra
- OnLine resource
-
Data dictionary
(
HTTPS
)
Supporting Document;CSV;eng,fra
- OnLine resource
-
Mobile Gear Map Data
(
ESRI REST: Map Service
)
Web Service;ESRI REST;fra
- OnLine resource
-
Mobile Gear Map data
(
ESRI REST: Map Service
)
Web Service;ESRI REST;eng
- OnLine resource
-
Sentinel Fisheries - Reports
(
HTTP
)
Supporting Document;PDF;eng,fra
- File identifier
- 929fe07f-ab8e-4b3c-8ee3-1aa7a9ea0b1a XML
- Metadata language
- eng; CAN
- Character set
- utf8; utf8 RI_458
- Hierarchy level
- dataset; jeuDonnées RI_622
- Date stamp
- 2025-02-04T20:19:11.328Z
- Metadata standard name
- North American Profile of ISO 19115:2003 - Geographic information - Metadata
- Metadata standard version
- CAN/CGSB-171.100-2009
Overviews

Spatial extent
))
Provided by
