Telemetry data obtained from Fastloc GPS/GSM tracking of 14 harbour seals (Phoca vitulina) captured in Baie des Veys in 2020 and 2021

Date 2022-08-05
Temporal extent 2020-10-13 -2021-07-21
Author(s) Vincent CecileORCID1
Affiliation(s) 1 : La Rochelle Université/CNRS, CEBC
DOI 10.17882/89718
Publisher SEANOE
Keyword(s) harbour seal, grey seal, phoca vitulina, halichoerus grypus, movement, GPS, tracking, at-sea distribution, marine mammal, windfarm
Abstract

Tracking data of 14 harbour seals were obtained from the deployment of Fastloc GPS/GSM tags developed by the Sea Mammal Research Unit (UK). Full tag description is available at: http://www.smru.st-andrews.ac.uk/Instrumentation/GPSPhoneTag/. The tags include a wet-dry sensor from which haulout events are recorded, a pressure sensor providing detailed dive data, as well as a Fastloc GPS recording irregular locations when the seal is not underwater. Data is stored onboard and transmitted via the GSM network when the seal is in the reception range. The data provided here are the individual GPS locations of the seals fitted with these tags for an average duration of 102 days.

Licence CC-BY-NC-ND
Acknowledgements We thank the fieldwork participants for their help in capturing seals, as well as colleagues from the Sea Mammal Research Unit for the development of the tags and technical help. Field participants came from La Rochelle Université (CEBC, Pelagis), the Reserve naturelle nationale du domaine de Beauguillot, and the Office Français de la Biodiversité (OFB), as well as GMN and SYMEL. All procedures were in accordance with the ethical standards of the French Ministry of the Environment as seals were caught and instrumented under licenses delivered to Cecile Vincent by this Ministry. The project was funded by the "Societe Eoliennes Offshore du Calvados" for the monitoring of harbour seals before the construction of the "Courseulles" offshore wind-farm.
Sensor metadata

Data_type: Type of data provided (either GPS, Dive or Haulout)

Species: Seal species: Pv=Phoca vitulina (harbour seal), Hg = Halichoerus grypus (grey seal)

Capture_site: Location of the seal capture

Tag_number: Individual number of the seal fitted with a tag. One individual could be "numbered" differently on two consecutive field work if fitted with a new tag.

Seal_ID: Telemetry tag number

D_DATE: Date and time (UTC 0) of the recorded Fastloc GPS location

LAT: Latitude of the Fastloc GPS location (in decimal degrees)

LON: Longitude of the Fastloc GPS location (in decimal degrees)

V_MASK: SMRU filter of the locations. V_Mask=0 is plausible, V_Mask=20 is rejected due to unrealistic swimming speed (but may still be true when the seal swims in fast tidal currents!), V_Mask=-1 could not be tested due to the lack of previous/next location

Data
File Size Format Processing Access
GPS locations of harbour seals tracked with GPS/GSM tags from Baie des Veys (France) in 2020-2021 5 MB CSV Quality controlled data Open access
GPS locations of harbour seals tracked with GPS/GSM tags from Baie des Veys (France) in 2020-2021 - Metadata 778 bytes CSV Quality controlled data Open access
Summary of individual seals captured and fitted with GPS/GSM tags (Baie des Veys, 2020-21) 1 KB CSV Quality controlled data Open access
Summary of individual seals captured and fitted with GPS/GSM tags (Baie des Veys, 2020-21) - Metadata 789 bytes CSV Quality controlled data Open access
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How to cite 

Vincent Cecile (2022). Telemetry data obtained from Fastloc GPS/GSM tracking of 14 harbour seals (Phoca vitulina) captured in Baie des Veys in 2020 and 2021. SEANOE. https://doi.org/10.17882/89718