• Arctic SDI catalogue
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NAFO Division 4T groundfish research vessel trawl survey (September Survey) dataset

Tow, catch, length frequency, and biological information for fish caught during the annual September research vessel trawl surveys in the southern Gulf of St. Lawrence (NAFO Division 4T). Abundance indices and spatial distribution patterns of commercial and non-commercial groundfish.

Simple

Date ( RI_366 )
1970-09-07
Date ( RI_367 )
2020-01-19
Date ( RI_368 )
2022-05-31
RI_409
  Government of Canada; Fisheries and Oceans Canada - Daniel Ricard ( Biologist, Aquatic Resources Division )
343 Université Ave , Moncton , New Brunswick , E1C 5K4 , Canada
506-851-6216
RI_409
  Government of Canada; Fisheries and Oceans Canada - Pablo Vergara ( Aquatic Science Biologist – Data manager )
343 Université Ave , Moncton , New Brunswick , E1C 5K4 , Canada
506-851-2369
Purpose
Each September since 1971, a standardized research vessel bottom-trawl survey has been conducted in the southern Gulf of St. Lawrence (NAFO Division 4T). The primary objective of this survey is to obtain abundance indices for the major groundfish resources in the area. The research survey provides a fisheries-independent source of information about all marine living organisms that are captured by the survey trawl in the southern Gulf of St. Lawrence.
Status
onGoing; enContinue RI_596
Maintenance and update frequency
annually; annuel RI_539
uncontrolled vocabulary; user-specified vocabulaire libre; spécifié par l'utilisateur ( RI_528 )
  • Length-Frequency Measurements
NASA/Global Change Master Directory (GCMD) Science Keywords Version 6.0.0.0.0 NASA/Global Change Master Directory (GCMD) Science Keywords Version 6.0.0.0.0 ( RI_528 )
  • Fisheries
  • NISKIN BOTTLES
  • Trawl
Integrated Taxonomic Information System (ITIS) Système d'information taxonomique intégré (SITI) ( RI_528 )
  • Amblyraja radiata
  • Anarhichas lupus
  • Artediellus atlanticus
  • Clupea harengus
  • Cottidae
  • Enchelyopus cimbrius
  • Gadus ogac
  • Glyptocephalus cynoglossus
  • Hemitripterus americanus
  • Hippoglossus hippoglossus
  • Icelus spatula
  • Leucoraja ocellata
  • Limanda ferruginea
  • Malacoraja senta
  • Mallotus villosus
  • Myoxocephalus octodecemspinosus
  • Myoxocephalus scorpioides
  • Myoxocephalus scorpius
  • Myxine glutinosa
  • Osmerus mordax mordax
  • Phycis chesteri
  • Scomber scombrus
  • Scophthalmus aquosus
  • Squalus acanthias
  • Tautogolabrus adspersus
  • Triglops murrayi
  • Urophycis tenuis
Government of Canada Core Subject Thesaurus Thésaurus des sujets de base du gouvernement du Canada ( Theme )
  • Crustaceans
  • Fish
  • Fisheries
  • Molluscs
  • Oceans
  • Salt water fish
DFO Areas Zones du MPO ( RI_525 )
  • Gulf of St. Lawrence
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
Use limitation
Please contact the data custodians before attempting to use this information in support of any kind of ecological analyses related to catch rates or biodiversity.
Use limitation
No limitations
Classification
unclassified; nonClassifié RI_484
Spatial representation type
textTable; texteTable RI_637
Metadata language
eng; CAN
Character set
utf8; utf8 RI_458
Topic category
  • Biota
Begin date
1971-09-07
Description
NAFO Division 4T
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S
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W
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Supplemental Information

PARAMETERS COLLECTED:

abundance estimates (ecological); distribution (ecological); species counts (ecological); gear (fishing); vessel information (fishing); point (spatial)

NOTES ON QUALITY CONTROL:

Scientific names listed in the survey species list have been mapped to recognized standards - marine taxa have been mapped to the World Register of Marine Species (WoRMS) using their online taxon match tool. All sampling locations were plotted on a map to perform a visual check confirming that the latitude and longitude coordinates were within the described sampling area.

In 2003, because of a fire aboard the Alfred Needler, the Wilfred Templeman was used for the survey. However, no comparative fishing experiments have been conducted between the Alfred Needler and the Wilfred Templeman. We are therefore unable to integrate the indices derived for 2003 to the remainder of the survey time-series.

SAMPLING METHODS:

Sampling Method: Hurlbut, T., and D. Clay. 1990. Protocols for research vessel cruises within the Gulf Region (demersal fish) (1970-1987). Can. Manuscr. Rep. Fish. Aquat. Sci. 2082: 143 p. Available online http://www.dfo-mpo.gc.ca/Library/115732.pdf [Accessed on 20190417]

Parameters: bottom water temperature -length, weight, sex, maturity, and age of selected individuals, tow, catch, length frequency, and biological information for fish caught

Organisms: groundfish, pelagics, invertebrates

CITATION LIST:

Chouinard, G.A.; LeBlanc, C.; Hurlbut, T.; Morin, R.B.; Swain, D.P.; Currie, L.; Poirier, G.A.; Benoît, H.P.. 2006. Preliminary Results from the September 2005 Bottom-trawl Survey of the Southern Gulf of St. Lawrence.. CSAS Research Document 2006/007.

Swain, D.P., Benoît, H.P., & Hammill, M.O. 2015. Spatial distribution of fishes in a northwest Atlantic ecosystem in relation to risk of predation by a marine mammal. Journal of Animal Ecology 84(5):1286-98.

Swain, D.P. & Benoît, H.P.. 2015. Extreme increases in natural mortality prevent recovery of collapsed fish populations in a Northwest Atlantic ecosystem. Marine Ecology Progress Series 519, 165-182.

Reference system identifier
http://www.epsg-registry.org / EPSG:4269
Distribution format
  • CSV ( n/a )

RI_414
  Government of Canada; Fisheries and Oceans Canada - Nicolas Rolland ( Aquatic Science Biologist )
343 Université Ave , Moncton , New Brunswick , E1C 5K4 , Canada
506-851-2035
OnLine resource
NAFO fishing division 4T groundfish research vessel trawl survey (September Survey) dataset ( HTTPS )

Dataset;CSV;eng,fra

OnLine resource
Data dictionary ( HTTPS )

Supporting Document;CSV;eng,fra

OnLine resource
NAFO fishing division 4T groundfish research vessel trawl survey (September Survey) ( ESRI REST: Map Service )

Web Service;ESRI REST;eng

OnLine resource
NAFO fishing division 4T groundfish research vessel trawl survey (September Survey) ( ESRI REST: Map Service )

Web Service;ESRI REST;fra

File identifier
1989de32-bc5d-c696-879c-54d422438e64 XML
Metadata language
eng; CAN
Character set
utf8; utf8 RI_458
Hierarchy level
dataset; jeuDonnées RI_622
Date stamp
2023-07-13T12:52:37
Metadata standard name
North American Profile of ISO 19115:2003 - Geographic information - Metadata
Metadata standard version
CAN/CGSB-171.100-2009
RI_414
  Government of Canada; Fisheries and Oceans Canada - Nicolas Rolland ( Aquatic Science Biologist )
343 Université Ave , Moncton , New Brunswick , E1C 5K4 , Canada
506-851-2035
 
 

Overviews

overview
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Spatial extent

N
S
E
W
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Keywords

Government of Canada Core Subject Thesaurus
Crustaceans Fish Fisheries Molluscs Oceans Salt water fish

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Associated resources

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