• Arctic SDI catalogue
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Small Gorgonian Coral Fields in the Newfoundland-Labrador Shelves (Campelen Trawl Sample)

Polygons denoting concentrations of sea pens, small and large gorgonian corals and sponges on the east coast of Canada have been identified through spatial analysis of research vessel survey by-catch data following an approach used by the Northwest Atlantic Fisheries Organization (NAFO) in the Regulatory Area (NRA) on Flemish Cap and southeast Grand Banks. Kernel density analysis was used to identify high concentrations and the area occupied by successive catch weight thresholds was used to identify aggregations. These analyses were performed for each of the five biogeographic zones of eastern Canada. The largest sea pen fields were found in the Laurentian Channel as it cuts through the Gulf of St. Lawrence, while large gorgonian coral forests were found in the Eastern Arctic and on the northern Labrador continental slope. Large ball-shaped Geodia spp. sponges were located along the continental slopes north of the Grand Banks, while on the Scotian Shelf a unique population of the large barrel-shaped sponge Vazella pourtalesi was identified. The latitude and longitude marking the positions of all tows which form these and other dense aggregations are provided along with the positions of all tows which captured black coral, a non-aggregating taxon which is long-lived and vulnerable to fishing pressures.

These polygons identify small gorgonian coral fields from the broader distribution of small gorgonian corals in the region as sampled by Campelen trawl gear in the Newfoundland - Labrador Shelves biogeographic zone. A 0.3 kg minimum threshold for the small gorgonian coral catch was identified as the weight that separated the small gorgonian field habitat from the broader distribution of small gorgonian corals with these research vessel tow data and gear type.

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Date ( RI_367 )
2016-10-17
Date ( RI_366 )
2010-09-01
RI_415
  Government of Canada; Fisheries and Oceans Canada - Ellen Kenchington ( Research Scientist )
Bedford Institute of Oceanography, 1 Challenger Drive, PO Box 1006 , Dartmouth , Nova Scotia , B2Y 4A2 , Canada
RI_408
  Government of Canada; Fisheries and Oceans Canada - Camille Lirette ( GIS Technician )
Bedford Institute of Oceanography, 1 Challenger Drive, PO Box 1006 , Dartmouth , Nova Scotia , B2Y 4A2 , Canada
Status
completed; complété RI_593
Maintenance and update frequency
asNeeded; auBesoin RI_540
Keywords ( RI_528 )
  • Newfoundland - Labrador Shelves Biogeographic Zone
  • Newfoundland - Labrador Shelves
  • Newfoundland
  • Labrador
  • Small Gorgonian Field
  • Small Gorgonian
  • Campelen
Government of Canada Core Subject Thesaurus Thésaurus des sujets de base du gouvernement du Canada ( RI_528 )
  • Marine biology
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; fra; CAN
Topic category
  • Biota
Begin date
2010-09-01
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Reference system identifier
EPSG / EPSG:4326 / 8.2.6
Distribution format
  • ESRI REST ( 10.3.1 )

RI_408
  Government of Canada; Fisheries and Oceans Canada - Camille Lirette ( GIS Technician )
OnLine resource
Small Gorgonian Coral Fields in the Newfoundland-Labrador Shelves - Campelen Trawl Sample ( ESRI REST: Map Service )

Web Service;ESRI REST;eng

OnLine resource
Small Gorgonian Coral Fields in the Newfoundland-Labrador Shelves - Campelen Trawl Sample ( ESRI REST: Map Service )

Web Service;ESRI REST;fra

File identifier
681b9130-3746-461c-ace9-ad2e945df838 XML
Metadata language
eng; CAN
Character set
utf8; utf8 RI_458
Parent identifier
Coral and Sponge Concentrations in the Newfoundland-Labrador Shelves Region of Canada 4ac1d265-aed6-4836-bb98-39e3b4e9229c
Hierarchy level
dataset; jeuDonnées RI_622
Date stamp
2025-02-04T20:07:27.828Z
Metadata standard name
North American Profile of ISO 19115:2003 - Geographic information - Metadata
Metadata standard version
CAN/CGSB-171.100-2009
RI_408
  Government of Canada; Fisheries and Oceans Canada - Tobias Spears ( Head, Ocean Data and Information Section )
 
 

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