• Arctic SDI catalogue
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Fixed gear sentinel fisheries program - northern Gulf of St. Lawrence

In place since fall 1994, the sentinel fisheries program is the result of a collaboration between Fisheries and Oceans Canada (DFO) and Quebec and Newfoundland commercial fishermen's associations. Under this program, contracts are awarded by tender to fishermen’s associations to carry out fishing activities according to scientific protocols developed by DFO. The main objective of this survey is to collect data that will be used to calculate abundance indices for the northern Gulf of St. Lawrence Atlantic cod stock.

Description of fixed gears survey

The fixed gear sentinel fisheries of the northern Gulf of St. Lawrence are conducted in the sub-division 3Pn and the divisions 4R, 4S of the Northwest Atlantic Fisheries Organization (NAFO) using fixed gillnets or longlines (other fishing gears were also used at the start of the program). Fishing activities with nets must have a mesh size of 5 ½ inches (140mm) and are limited to a maximum of 6 to 20 nets depending on the region and capture and the target immersion time is between 19 to 24 hours. Longline fishing activities, for its part, must be carried out with traditional J #16 or C #12 hooks. The maximum number of hooks varies from 500 to 1000, depending on the catch, and the target immersion time is 4 to 6 hours. Data are collected by observers at sea or by technicians.

Data

For each fishing activity, the total catch is sorted and weighed by species. For each species other than Atlantic cod, the number of individuals caught is noted. Atlantic cod are then measured at the fork (cm). Other biological data such as weight (total, gonad, liver and stomach), age, sex and maturity can then be collected on a subsample of cod.

The biological data are divided into 4 files: a “Metadata” file containing set information, a “Catches” file containing catches per set for fish taxa, a “Carbio” file containing biological and morphometric measurements per individual, a “Freql” file containing the length frequency of fish.

The data collected as part of this program is available below. It is important to note, however, that 1) only traits deemed successful have been retained; 2) historical data may contain inaccuracies; 3) the most recent survey is not available for validation purposes.

Simple

Date ( RI_367 )
2019
Date ( RI_366 )
2019
RI_416
  Government of Canada; Fisheries and Oceans Canada - Section Gestion de données - Direction des avis, information et soutien scientifiques ( )
850, route de la Mer, P.O. Box 1000 , Mont-Joli , Quebec , G5H 3Z4 , Canada
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 )
  • Oceans
  • Fish
  • Fisheries management
  • Marine biology
  • Aquatic wildlife
  • Aquatic ecosystems
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
N
S
E
W
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Reference system identifier
https://epsg.io/ / EPSG:4326
Distribution format
  • CSV ( unknown )

RI_414
  Government of Canada; Fisheries and Oceans Canada - Section Gestion de données - Direction des avis, information et soutien scientifiques ( )
850, route de la Mer, P.O. Box 1000 , Mont-Joli , Quebec , G5H 3Z4 , Canada
OnLine resource
Fixed Gear Map data ( ESRI REST: Map Service )

Web Service;ESRI REST;fra

OnLine resource
Fixed Gear Map data ( ESRI REST: Map Service )

Web Service;ESRI REST;eng

OnLine resource
Fixed gear sentinel fisheries program data ( HTTPS )

Dataset;ZIP;eng

OnLine resource
Fixed gear sentinel fisheries program data ( HTTPS )

Dataset;ZIP;fra

OnLine resource
Data dictionary ( HTTPS )

Supporting Document;CSV;eng,fra

File identifier
d82e5388-f241-4c27-875a-941a49ab70c8 XML
Metadata language
eng; CAN
Character set
utf8; utf8 RI_458
Hierarchy level
dataset; jeuDonnées RI_622
Date stamp
2025-05-20T19:36:06.947Z
Metadata standard name
North American Profile of ISO 19115:2003 - Geographic information - Metadata
Metadata standard version
CAN/CGSB-171.100-2009
RI_418
  Government of Canada; Fisheries and Oceans Canada - Section Gestion de données - Direction des avis, information et soutien scientifiques ( )
850, route de la Mer, P.O. Box 1000 , Mont-Joli , Quebec , G5H 3Z4 , Canada
 
 

Overviews

overview
Fixed gear sentinel fishing thumbnail

Spatial extent

N
S
E
W
thumbnail


Keywords


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Associated resources

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