Southern Gulf of St. Lawrence NAFO Division 4T Ecosystem Research Vessel Survey (September survey) Dataset
PURPOSE:
The research survey provides a fisheries-independent source of information about all marine living organisms that are captured by the fishing trawl used to obtain samples in the southern Gulf of St. Lawrence.
DESCRIPTION:
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.
The catch data that appear in this dataset SHOULD NOT BE USED FOR ECOLOGICAL ANALYSES INVOLVING CATCH RATES. Important factors such as vessel, fishing gear and diurnal periods must be accounted for to use these data in analyses. Please contact the data custodians if you are interested in using this data for any kind of ecological analyses involving catch rates.
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: Consult the "Protocols for research vessel cruises within the Gulf Region (dermersal fish) (1970-1980)" report, link provided in the citations list.
USE LIMITATION:
To ensure scientific integrity and appropriate use of the data, we would encourage you to contact the data custodian.
Simple
- Date ( RI_366 )
- 1971-09-07
- Date ( RI_367 )
- 2020-01-19
- Purpose
- The research survey provides a fisheries-independent source of information about all marine living organisms that are captured by the fishing trawl used to obtain samples 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 ( RI_528 )
-
- Oceans
- Molluscs
- Crustaceans
- Fisheries
- Fish
- 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
- To ensure scientific integrity and appropriate use of the data, we would encourage you to contact the data custodian.
- 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
- Reference system identifier
- http://www.epsg-registry.org / EPSG:4269
- Distribution format
-
-
CSV
(
n/a
)
-
CSV
(
n/a
)
- 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
-
Supplementary Citation List
(
HTTPS
)
Supporting Document;PDF;eng,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
- 2024-12-18T19:24:09.121Z
- Metadata standard name
- North American Profile of ISO 19115:2003 - Geographic information - Metadata
- Metadata standard version
- CAN/CGSB-171.100-2009