Description

The greenland shark (Somniosus microcephalus), is a species found in Atlantic Canadian waters which is occasionally encountered in commercial fisheries. Pop-up Satellite Archival Tags (PSAT) from Wildlife Computers were applied to greenland sharks from 2006 to 2009 to collect data on depth (pressure), temperature and ambient light level (for position estimation). Deployments were conducted in Canada on commercial vessels throughout the year and in Cumberland Sound (Pangirtung) on a scientific expedition in April 2008. A variety of tag models were deployed: PAT 4 (n=1) and Mk10 (N=15) and 14 of 16 tags reported. Greenland sharks tagged ranged in size from 250 cm to 549 cm Total Length (curved); 3 were female, 9 were male, and 4 were of unknown sex. Time at liberty ranged from 48 – 350 days and 9 tags remained on the sharks for the programmed duration. Raw data transmitted from the PSAT’s after release was processed through Wildlife Computers software (GPE3) to get summary files, assuming a maximum swimming speed of 2m/s, NOAA OI SST V2 High Resolution data set for SST reference and ETOPO1-Bedrock dataset for bathymetry reference. The maximum likelihood position estimates are available in .csv and .kmz format and depth and temperature profiles are also in .csv format. Other tag outputs as well as metadata from the deployments can be obtained upon request from: warren.joyce@dfo-mpo.gc.ca or heather.bowlby@dfo-mpo.gc.ca.

Resources

Name	Format	Description	Link
GPE3 location estimates - Greenland Shark	CSV		https://api-proxy.edh-cde.dfo-mpo.gc.ca/catalogue/records/a849be8a-4d20-4830-8ab5-8ebb1a68a519/attachments/CSVMapsBilingual.zip
Data Dictionary	CSV		https://api-proxy.edh-cde.dfo-mpo.gc.ca/catalogue/records/a849be8a-4d20-4830-8ab5-8ebb1a68a519/attachments/Greenland_DD.csv
GPE3 location estimates - Greenland Shark	Unknown		https://api-proxy.edh-cde.dfo-mpo.gc.ca/catalogue/records/a849be8a-4d20-4830-8ab5-8ebb1a68a519/attachments/Greenland_DL.gdb.zip
GPE3 location estimates - Greenland Shark	Unknown		https://api-proxy.edh-cde.dfo-mpo.gc.ca/catalogue/records/a849be8a-4d20-4830-8ab5-8ebb1a68a519/attachments/GreenlandKMZ.zip
Pelagic Shark Satellite Tag data - Greenland Shark	Ersi REST		https://egisp.dfo-mpo.gc.ca/arcgis/rest/services/open_data_donnees_ouvertes/pelagic_shark_satellite_tag_data_greenland_shark/MapServer
Pelagic Shark Satellite Tag data - Greenland Shark	Ersi REST		https://egisp.dfo-mpo.gc.ca/arcgis/rest/services/open_data_donnees_ouvertes/pelagic_shark_satellite_tag_data_greenland_shark/MapServer

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