Known concentration areas of the Atlantic razor clam in the Estuary and the Gulf of St. Lawrence
The dataset represents known concentration areas of harvested or unharvested Atlantic razor clam (Ensis leei) in the Estuary and the Gulf of St. Lawrence, Quebec Region. It was created for the National Environmental Emergencies Centre (NEEC) for preparation and response purposes in case of an oil spill. Concentration areas were defined using data from Fisheries and Oceans Canada (DFO) inventories, various DFO research projects and commercial fisheries data.
This layer is dependent on the inventories carried out and thus only represents the known areas of the Atlantic razor clam. This dataset does not represent the general distribution of the species nor the extent to which fishing is allowed. Most of the information comes from inventories that did not necessarily target this species, therefore its distribution is undoubtedly wider than what is recorded in the layer. In addition, the extent of shellfish beds can change over time in response to, among others, harvesting and recruitment rates. Some beds were mapped based on DFO research project data which were compiled in a benthic biodiversity Access database. Polygons drawn around these data are not precise and may be reviewed. However, the precision is sufficient for the resource protection and management needs in case of an environmental incident.
Data sources and references:
Anonym. 1991. Analyse de l'échantillonnage en mer des mactres de Stimpson. Programme d'adaptation des pêches de l'Atlantique. Pesca tec International. Pêches et Océans Canada. 134 p.
Bernier, L. and L. Poirier. 1979. Évaluation sommaire du stock de mactres de l'Atlantique, Spisula solidissima Dillwyn, des Îles-de-la-Madeleine (golfe du Saint-Laurent). Cahier d'information, ministère de l'Industrie et du Commerce. 42 p.
Bourdages, H., P. Goudreau, J. Lambert, L. Landry and C. Nozères. 2012. Distribution des bivalves et gastéropodes benthiques dans les zones infralittorale et circalittorale des côtes de l’estuaire et du nord du golfe du Saint-Laurent. Rapp. tech. can. sci. halieut. aquat. 3004 : iv + 103 p.
Bourget, E. and D. Messier. 1983. Macrobenthic density, biomass, and fauna of intertidal and subtidal sand in a Magdalen Islands lagoon, Gulf of St. Lawrence. Can. J. Zool. 61(11):2509-2518.
Brulotte, S. Unpublished data. Fisheries and Oceans Canada.
Brulotte, S. 2013. Évaluation des stocks de la mactre de l’Atlantique, Spisula solidissima, des eaux côtières des Îles-de-la-Madeleine – méthodologies et résultats. Secr. can. de consult. sci. du MPO. Doc. de rech. 2013/082: x + 58 p.
Brulotte, S. 2016. Évaluation des stocks de mactre de l’Atlantique, Spisula solidissima, des Îles-de-la-Madeleine, Québec en 2015 – méthodologie et résultats. Secr. can. de consult. sci. du MPO. Doc. de rech. 2016/074. x + 51 p.
Brulotte, S., M. Giguère, S. Brillon and F. Bourque. 2006. Évaluation de cinq gisements de mye commune (Mya arenaria) aux Îles-de-la-Madeleine, Québec, de 2000 à 2003. Rapp. Tech. can. Sci. halieut. Aquat. 2640 : xii + 92 p.
DFO. 2013. Assessment of Razor Clam stock in Québec’s Inshore Waters in 2012. DFO Can. Sci. Advis. Sec. Sci. Advis. Rep. 2013/052.
Elouard, B, G. Desrosiers, J.C. Brêthes and Y. Vigneault. 1983. Étude de l'habitat du poisson autour des ilots créés par des déblais de dragage; lagune de Grande-Entrée, Îles-de-la-Madeleine. Can. Tech. Rep. Fish. Aquat. Sci. 1209:viii + 69 p.
Gendreau, Y. 2018. MS Access database on benthic biodiversity. Fisheries and Oceans Canada.
Provencher, L. and C. Nozères. 2011. Protocole de suivi des communautés benthiques de la zone de protection marine Manicouagan. Secr. can. de consult. sci. du MPO. Doc. de rech. 2011/051:iv +25 p.
Thompson, M., D. Drolet and J.H. Himmelman. 2005. Localization of infaunal prey by the sea star Leptasterias polaris. Mar. Biol. 146(5):887-894.
Simple
- Date ( RI_367 )
- 2022
- Date ( RI_366 )
- 2022
- Status
- completed; complété RI_593
- Maintenance and update frequency
- notPlanned; nonPlanifié RI_542
- Keywords ( RI_525 )
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- Quebec
- Estuary of St. Lawrence
- Gulf of St. Lawrence
- Keywords ( RI_530 )
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- Concentration area
- Bivalve
- Razor clam
- Ensis leei
- urn:lsid:marinespecies.org:taxname:876640
- Government of Canada Core Subject Thesaurus Thésaurus des sujets de base du gouvernement du Canada ( RI_528 )
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- Aquatic animals
- 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; CAN
- Metadata language
- fra; CAN
- Character set
- utf8; utf8 RI_458
- Topic category
-
- Biota
- Environment
- Oceans
- Begin date
- 2000
- End date
- 2020
))
- Reference system identifier
- http://www.epsg-registry.org / EPSG:3978 /
- Distribution format
-
-
SHP
(
Inconnue
)
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CSV
(
Inconnue
)
-
ESRI REST
(
Inconnue
)
-
SHP
(
Inconnue
)
- OnLine resource
-
Known concentration areas of the Atlantic razor clam
(
ESRI REST: Map Service
)
Web Service;ESRI REST;eng
- OnLine resource
-
Known concentration areas of the Atlantic razor clam
(
ESRI REST: Map Service
)
Web Service;ESRI REST;fra
- OnLine resource
-
Data dictionary
(
HTTPS
)
Supporting Document;CSV;eng,fra
- OnLine resource
-
Layer of the known concentration areas of the Atlantic razor clam
(
HTTPS
)
Dataset;SHP;eng,fra
- File identifier
- a0039b2e-7847-4d48-8fd8-638677760f8b XML
- Metadata language
- eng; CAN
- Character set
- utf8; utf8 RI_458
- Parent identifier
- Biological Sensitivity Mapping for Oil Spill Planning and Response, Quebec Region d8a6c6fd-76cc-4d68-a949-c4d80eb2f296
- Hierarchy level
- dataset; jeuDonnées RI_622
- Date stamp
- 2025-02-11T01:23:51.5Z
- Metadata standard name
- North American Profile of ISO 19115:2003 - Geographic information - Metadata
- Metadata standard version
- CAN/CGSB-171.100-2009
Overviews

Spatial extent
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