Know concentration areas of the Softshell clam in the intertidal zone of the Estuary and the Gulf of St. Lawrence
The dataset represents known concentration areas of harvested or unharvested Softshell clam (Mya arenaria) in the intertidal zone of the Estuary and the Gulf of St. Lawrence, Quebec region. The dataset was created for the National environmental emergencies centre (NEEC) for preparation and response in case of an oil spill. Concentration areas were defined using Fisheries and Oceans Canada (DFO) inventories conducted between 2000 and 2020.
This layer is dependent on the inventories carried out and thus only represents known clam areas. For example, for the Haute-Côte-Nord, inventories have been limited to areas open to harvesting (with the exception of 4 sectors), but it is known that the Softshell clam is also present outside these areas. In addition, little information was available for the Moyenne and Basse-Côte-Nord.
This data layer does not represent the general distribution of the species nor the extent to which fishing is allowed. The extent of shellfish beds may vary over time in response to, among others harvesting and the recruitment rates. The boundaries of polygons from inventory data may be underestimated relative to the actual size of the deposit since the inventories were conducted at the location where the resource is most abundant, without necessarily sampling the entire bed. However, the accuracy is sufficient for the protection and management needs of the resource in the event of an environmental incident.
Data sources and references:
Brulotte, S. 2011. Évaluation des stocks de mye commune des eaux côtières du Québec. Secr. can. de consult. sci. du MPO. Doc. de rech. 2011/044. x + 53 p.
Brulotte, S. 2018. Évaluation de la mye commune (Mya arenaria) des eaux côtières du Québec en 2016 – méthodologie et résultats. Secr. can. de consult. sci. du MPO. Doc. de rech. 2018/004. ix + 60 p.
Brulotte, S. 2020. Évaluation des stocks de la mye commune (Mya arenaria) des eaux côtières du Québec en 2019 – méthodologie et résultats. Secr. can. de consult. sci. du MPO. Doc. de rech. 2020/055. vii + 43 p.
Brulotte, S. 2022. Résultats des inventaires de gisements de mye commune (Mya arenaria) réalisés de 2016 à 2020 et mise à jour des résultats de ceux effectués de 2001 à 2014 au Québec. Secr. can. de consult. sci. du MPO. Doc. de rech. 2022/xxx. (in progress)
Brulotte, S. and M. Giguère. 2003. Évaluation d'un gisement de mye commune (Mya arenaria) de l'embouchure de la rivière Mingan, Québec, Rapp. can. ind. sci. halieut. aquat. No. 2511: xi + 58.
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.
Brulotte, S., Giguère, M. and Duluc, C. 2015. Essais de techniques de captage du naissain de mye commune (Mya arenaria) sur la rive nord de l’estuaire et du golfe du Saint-Laurent. Rapp. tech. can. sci. halieut. aquat. 3084 : ix + 60 p.
Giguère, M., S. Brulotte and F. Hartog.2007. Évaluation de quelques gisements de mye commune (Mya arenaria) de la rive sud de l'estuaire du Saint-Laurent en 2005 et 2006. Rapp. can. ind. sci. halieut. aquat. No. 2738: xi + 107.
Giguère, M., S. Brulotte, M. Boudreau and M.-F. Dréan. 2008. Évaluation de huit gisements de mye commune (Mya arenaria) de la rive nord de l’estuaire du Saint-Laurent de 2002 à 2008. Rapp. tech. can. sci. halieut. aquat. 2821 : x + 91 p.
Roy, I., M. Giguère, S. Brulotte and M. Gagnon. 2003. Évaluation de douze gisements de mye commune (Mya arenaria) du sud de la Gaspésie, Rapp. Tech. can. sci. halieut. aquat. 2469: xvi + 140 p.
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 )
-
- Quebec
- Estuary of St. Lawrence
- Gulf of St. Lawrence
- Keywords ( RI_530 )
-
- Concentration area
- Bivalve
- Softshell clam
- Mya arenaria
- urn:lsid:marinespecies.org:taxname:140430
- Government of Canada Core Subject Thesaurus Thésaurus des sujets de base du gouvernement du Canada ( RI_528 )
-
- Aquatic animals
- Aquatic ecosystems
- Aquatic wildlife
- 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
)
-
CSV
(
Inconnue
)
-
ESRI REST
(
Inconnue
)
-
SHP
(
Inconnue
)
- OnLine resource
-
Know concentration areas of the Softshell clam
(
ESRI REST: Map Service
)
Web Service;ESRI REST;eng
- OnLine resource
-
Know concentration areas of the Softshell 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 know concentration areas of the Softshell clam
(
HTTPS
)
Dataset;SHP;eng,fra
- File identifier
- 83fc6c4f-8a13-4e42-8d22-4dbacb5fa8c3 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
- 2025-02-11T01:23:41.467Z
- 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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