• Arctic SDI catalogue
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Biodiversity of the snow crab trawl survey in the St. Lawrence Estuary (2019)

A research survey on snow crab (Chionoecetes opilio) was conducted from July 7 to July 26, 2019 in the Estuary St. Lawrence River between Forestville, Baie-Comeau and Matane. The main objective of this survey was to assess the abundance of snow crab and benthic species associated with snow crab habitat. Only data for benthic species associated with snow crab habitat are presented in this dataset.

Data were collected according to a fixed station sampling design consisting of 66 stations, between 31 and 279 meters depth. Specimens were collected using a beam trawl with a total width of 2.8 meters and a total height of 0.76 meters. The codend was lined with a 16 millimeter stretched mesh net in order to harvest the small individuals. The hauls were made at a target speed of 2 knots and a target duration of 15 minutes. Start and end positions were recorded to calculate the distance traveled on each tow using the geosphere library in R. The average tow distance was approximately 25 m. The area covered at each tow was the product of the trawl opening and the distance traveled.

The two files provided (DarwinCore format) are complementary and are linked by the "eventID" key. The "Activity_Information" file includes generic activity information, including date and location. The "occurrence_taxon" file includes the taxonomy of the species observed, identified to the species or lowest possible taxonomic level. To obtain the abundance and biomass assessment, contact Cedric Juillet (cedric.juillet@dfo-mpo.gc.ca ).

For quality controls, all taxonomic names were checked against the World Register of Marine Species (WoRMS) to match recognized standards. The WoRMS match was placed in the "ScientificnameID" field of the occurrence file. Data quality checks were performed using the R obistools and worrms libraries. All sampling locations were spatially validated.

Simple

Date ( RI_367 )
2021-10-26
Date ( RI_366 )
2021-10-26
RI_418
  Government of Canada;Fisheries and Oceans Canada;Sciences/Demersal and Benthic Sciences Branch (DBSB) - Cédric Juillet ( Biologist, section head, benthic sciences )
Maurice Lamontagne Institute, 850, route de la Mer , Mont-Joli , Quebec , G5H 3Z4 , Canada
RI_414
  Government of Canada;Fisheries and Oceans Canada;Sciences/Demersal and Benthic Sciences Branch (DBSB) - Isabelle Lévesque ( Aquatic science technician )
Maurice Lamontagne Institute, 850, route de la Mer , Mont-Joli , Quebec , G5H 3Z4 , Canada
Status
completed; complété RI_593
Maintenance and update frequency
asNeeded; auBesoin RI_540
Keywords ( RI_530 )
  • Occurrence, Sampling, Biodiversity, Beam trawl, Snow crab
Keywords ( RI_525 )
  • St. Lawrence Estuary, Forestville, Baie-Comeau, Matane
Government of Canada Core Subject Thesaurus Thésaurus des sujets de base du gouvernement du Canada ( RI_528 )
  • 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
grid; grille RI_636
Metadata language
eng; CAN
Metadata language
fre; CAN
Character set
utf8; utf8 RI_458
Topic category
  • Biota
  • Environment
Begin date
2019-07-07
End date
2019-07-26
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Reference system identifier
http://www.epsg.io / EPSG:4326 /
Distribution format
  • CSV ( 16.0.5149.1000 )

RI_414
  Government of Canada;Fisheries and Oceans Canada;Sciences/SAISB - Section Gestion de données - Direction des avis, information et soutien scientifiques / Data Management Section - Scientific Advice, Information and Support Branch ( )
Maurice Lamontagne Institute, 850, route de la Mer , Mont-Joli , Quebec , G5H 3Z4 , Canada
OnLine resource
Biodiversity of the snow crab trawl survey in the St. Lawrence Estuary (2019) - Map Server ( ESRI REST: Map Server )

Web Service;ESRI REST;eng

OnLine resource
Biodiversity of the snow crab trawl survey in the St. Lawrence Estuary (2019) - Map server ( ESRI REST: Map Server )

Web Service;ESRI REST;fra

OnLine resource
Data of biodiversity of the snow crab trawl survey in the St. Lawrence Estuary (2019) ( HTTPS )

Dataset;CSV;eng,fra

OnLine resource
Data Dictionary ( HTTPS )

Supporting Document;CSV;eng,fra

File identifier
97dac757-2ef6-4144-b7d9-a0d8d51f8319 XML
Metadata language
eng; CAN
Character set
utf8; utf8 RI_458
Parent identifier
Coastal Environmental Baseline Program 7f4b9eb6-805f-4d0b-a597-2d7a44e045d7
Hierarchy level
dataset; jeuDonnées RI_622
Date stamp
2025-02-06T00:51:39.799Z
Metadata standard name
North American Profile of ISO 19115:2003 - Geographic information - Metadata
Metadata standard version
CAN/CGSB-171.100-2009
RI_413
  Government of Canada;Fisheries and Oceans Canada;Sciences/Demersal and Benthic Sciences Branch (DBSB) - Claude Nozères ( Biologist )
Maurice Lamontagne Institute, 850, route de la Mer , Mont-Joli , Quebec , G5H 3Z4 , Canada
 
 

Overviews

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Map of stations
overview
Map of stations

Spatial extent

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Keywords


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