• Arctic SDI catalogue
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Historical data of biodiversity of the Magdalen Islands Sea Scallop survey

A research survey of scallops (mainly sea scallop Placopecten magellanicus, but also Icelandic Scallop Chlamys islandica) using a dredge was carried out by DFO (Fisheries and Oceans Canada) every 1 or 2 years since 1992 in the Magdalen Islands (fishing area 20). The main objective of this research survey was to assess Sea Scallop stocks. Another objective was to document taxa associated with scallop habitat according to a fixed random sampling plan. Occurrences by species (or taxon) are presented by station. The taxonomic and geographical validity of the data was checked and the World Register of Marine Species served as the taxonomic authority for naming all taxa recorded during the survey. Epibenthic invertebrates (mainly molluscs, echinoderms and crustaceans) as well as demersal fish were identified from the dredge catches. The current data starting in 2021 are available at the following link : https://open.canada.ca/data/en/dataset/6529a4b0-f863-4568-ac71-1fa26cf68679

The study area is located south of the Magdalen Islands and the sampling of scallop beds is carried out at depths of 10 to 38 m, generally around 25 to 35 m. A random selection of sampling stations is carried out from a fixed station grid. Sampling is done along transects at these randomly drawn stations in the study area. Sampling is done with a lined Digby scallop dredge (20 mm mesh) over approximately 500 m along the seabed. The four baskets of the dredge are examined for all scallops. Next, a basket (the first on the starboard side) is sorted and examined for associated species. Most specimens are counted by taxon. The presence or relative abundance of undersized and numerous, or colonial, organisms is noted. Special cases are sometimes retained for taxonomic analysis, for example, ascidians (to monitor invasive species) and sponges (to document new species).

Simple

Date ( RI_367 )
2023-05-17
Date ( RI_366 )
2023-05-08
RI_414
  Government of Canada; Fisheries and Oceans Canada; Demersal and Benthic Sciences Branch (DBSB) - Virginie Roy ( Scientific researcher )
Maurice Lamontagne Institute, 850, route de la Mer , Mont-Joli , Quebec , G5H 3Z4 , Canada
RI_419
  Government of Canada; Fisheries and Oceans Canada; Sciences/Demersal and Benthic Sciences Branch (DBSB) - Claude Nozère ( Aquatic science biologist )
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, Scallop
Keywords ( RI_525 )
  • St. Lawrence River, Magdalen Island
Thésaurus des sujets de base du gouvernement du Canada Government of Canada Core Subject Thesaurus ( 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
1992-09-03
End date
2019-09-24
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Reference system identifier
https://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
Map service of biodiversity of Magdalen Islands Sea Scallop survey ( ESRI REST: Map Service )

Web Service;ESRI REST;eng

OnLine resource
Map of biodiversity of the Magdalen Islands Sea Scallop survey ( ESRI REST: Map Service )

Web Service;ESRI REST;fra

OnLine resource
Data dictionary ( HTTPS )

Supporting Document;CSV;eng,fra

OnLine resource
Stations data ( HTTPS )

Dataset;CSV;eng

OnLine resource
Stations data ( HTTPS )

Dataset;CSV;fra

OnLine resource
Occurrences data ( HTTPS )

Dataset;CSV;eng

OnLine resource
Occurrences data ( HTTPS )

Dataset;CSV;fra

File identifier
71732ad5-5c70-4dbf-916d-a94e1380c53b XML
Metadata language
fra; CAN
Character set
utf8; utf8 RI_458
Hierarchy level
dataset; jeuDonnées RI_622
Date stamp
2025-02-06T12:40:11.127Z
Metadata standard name
North American Profile of ISO 19115:2003 - Geographic information - Metadata
Metadata standard version
CAN/CGSB-171.100-2009
RI_419
  Government of Canada; Fisheries and Oceans Canada; Sciences/Demersal and Benthic Sciences Branch (DBSB) - Rénald Belley ( Scientific researcher )
Maurice Lamontagne Institute, 850, route de la Mer , Mont-Joli , Quebec , G5H 3Z4 , Canada
RI_415
  Government of Canada; Fisheries and Oceans Canada; Sciences/Demersal and Benthic Sciences Branch (DBSB) - Virginie Roy ( Scientific researcher )
Institut Maurice-Lamontagne, 850, route de la Mer , Mont-Joli , Quebec , G5H 3Z4 , Canada
 
 

Overviews

overview
Map of stations

Spatial extent

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Keywords


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Associated resources

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