Telemetry data obtained from Fastloc GPS/GSM tracking of 30 harbour seals (Phoca vitulina) and 33 grey seals (Halichoerus grypus), captured in the Baie du Mont-Saint-Michel, Baie des Veys, Baie de Somme, and Archipel de Molene (France), from 2006 to 2013

Tracking data of 30 harbour seals and 33 grey 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, dive parameters and haulouts of the seals fitted with these tags for an average duration of 140 days.

Tracking data of 30 harbour seals and 33 grey 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, dive parameters and haulouts of the seals fitted with these tags for an average duration of 140 days.

Disciplines

Biological oceanography, Environment

Keywords

harbour seal, Phoca vitulina, grey seal, Halichoerus grypus, telemetry, GPS, dive, behaviour, movement, marine mammal

Location

57.5N, 47.4S, 6.8E, -14.5W

Devices

GPS location data:

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, V_Mask=-1 could not be tested due to the lack of previous/next location

 

Dive data:

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

Seal_ID: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.

Tag_number:Telemetry tag number

DE_DATE:Date and time of the Dive End

SURF_DUR:Post-dive surface duration (seconds)

DIVE_DUR:Dive duration (seconds)

PERCENT_AREA:Maximum depth (meters)

MAX_DEP:Percentage of the "maximum dive trapezoid" covered by the dive, used for the calculation of the Time Allocation at Depth index (TAD; cf. Fedak et al., 2001; https://doi.org/10.1111/j.1748-7692.2001.tb00982.x).

D1:Intermediate depth point 1 (metres) in the dive, at time = 10% of the total dive duration

D2:Intermediate depth point 2 (metres) in the dive, at time = 20% of the total dive duration

D3:Intermediate depth point 3 (metres) in the dive, at time = 30% of the total dive duration

D4:Intermediate depth point 4 (metres) in the dive, at time = 40% of the total dive duration

D5:Intermediate depth point 5 (metres) in the dive, at time = 50% of the total dive duration

D6:Intermediate depth point 6 (metres) in the dive, at time = 60% of the total dive duration

D7:Intermediate depth point 7 (metres) in the dive, at time = 70% of the total dive duration

D8:Intermediate depth point 8 (metres) in the dive, at time = 80% of the total dive duration

D9:Intermediate depth point 9 (metres) in the dive, at time = 90% of the total dive duration

LAT:Estimated latitude of the end of the dive (interpolated between previous and next "real" Fastloc GPS location recorded by the tag)

LON:Estimated longitude of the end of the dive (interpolated between previous and next "real" Fastloc GPS location recorded by the tag)

 

Haulout data:

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, V_Mask=-1 could not be tested due to the lack of previous/next location

 

 

Data

FileSizeFormatProcessingAccess
Summary of individual seals captured and fitted with GPS/GSM tags (France, 2006-2014)
8 KoCSVQuality controlled data
Summary of individual seals captured and fitted with GPS/GSM tags (France, 2006-2014): metadata
746 octetsCSVQuality controlled data
Dive data from grey seals tracked with GPS/GSM tags from Baie de Somme (France) in 2012-13
68 MoCSVQuality controlled data
Dive data from grey seals tracked with GPS/GSM tags from Baie de Somme (France) in 2012-13: metadata
1 KoCSVQuality controlled data
Dive data from harbour seals tracked with GPS/GSM tags from Baie de Somme (France) in 2008-09
56 MoCSVQuality controlled data
Dive data from harbour seals tracked with GPS/GSM tags from Baie de Somme (France) in 2008-09: metadata
2 KoCSVQuality controlled data
Dive data from harbour seals tracked with GPS/GSM tags from Baie des Veys (France) in 2007-09
46 MoCSVQuality controlled data
Dive data from harbour seals tracked with GPS/GSM tags from Baie des Veys (France) in 2007-09: metadata
1 KoCSVQuality controlled data
Dive data from harbour seals tracked with GPS/GSM tags from Baie du Mont-Saint-Michel (France) in 2006-08
15 MoCSVQuality controlled data
Dive data from harbour seals tracked with GPS/GSM tags from Baie du Mont-Saint-Michel (France) in 2006-08: metadata
1 KoCSVQuality controlled data
Dive data from grey seals tracked with GPS/GSM tags from Archipel de Molene (France) in 2010-14
140 MoCSVQuality controlled data
Dive data from grey seals tracked with GPS/GSM tags from Archipel de Molene (France) in 2010-14: metadata
1 KoCSVQuality controlled data
GPS locations of grey seals tracked with GPS/GSM tags from Baie de Somme (France) in 2012-13
6 MoCSVQuality controlled data
GPS locations of grey seals tracked with GPS/GSM tags from Baie de Somme (France) in 2012-13: metadata
787 octetsCSVQuality controlled data
GPS locations of harbour seals tracked with GPS/GSM tags from Baie de Somme (France) in 2008-09
1 MoCSVQuality controlled data
GPS locations of harbour seals tracked with GPS/GSM tags from Baie de Somme (France) in 2008-09: metadata
787 octetsCSVQuality controlled data
GPS locations of harbour seals tracked with GPS/GSM tags from Baie des Veys (France) in 2007-09
2 MoCSVQuality controlled data
GPS locations of harbour seals tracked with GPS/GSM tags from Baie des Veys (France) in 2007-09: metadata
787 octetsCSVQuality controlled data
GPS locations of harbour seals tracked with GPS/GSM tags from Baie du Mont-Saint-Michel (France) in 2006-08
1 MoCSVQuality controlled data
GPS locations of harbour seals tracked with GPS/GSM tags from Baie du Mont-Saint-Michel (France) in 2006-08: metadata
1 KoCSVQuality controlled data
GPS locations of grey seals tracked with GPS/GSM tags from Archipel de Molene (France) in 2010-14
15 MoCSVQuality controlled data
GPS locations of grey seals tracked with GPS/GSM tags from Archipel de Molene (France) in 2010-14: metadata
787 octetsCSVQuality controlled data
Haulout data from grey seals tracked with GPS/GSM tags from Baie de Somme (France) in 2012-13
216 KoCSVQuality controlled data
Haulout data from grey seals tracked with GPS/GSM tags from Baie de Somme (France) in 2012-13: metadata
946 octetsCSVQuality controlled data
Haulout data from harbour seals tracked with GPS/GSM tags from Baie de Somme (France) in 2008-09
171 KoCSVQuality controlled data
Haulout data from harbour seals tracked with GPS/GSM tags from Baie de Somme (France) in 2008-09: metadata
946 octetsCSVQuality controlled data
Haulout data from harbour seals tracked with GPS/GSM tags from Baie des Veys (France) in 2007-09
2 MoCSVQuality controlled data
Haulout data from harbour seals tracked with GPS/GSM tags from Baie des Veys (France) in 2007-09: metadata
946 octetsCSVQuality controlled data
Haulout data from harbour seals tracked with GPS/GSM tags from Baie du Mont-Saint-Michel (France) in 2006-08
89 KoCSVQuality controlled data
Haulout data from harbour seals tracked with GPS/GSM tags from Baie du Mont-Saint-Michel (France) in 2006-08: metadata
946 octetsCSVQuality controlled data
Haulout data from grey seals tracked with GPS/GSM tags from Archipel de Molene (France) in 2010-14
15 MoCSVQuality controlled data
Haulout data from grey seals tracked with GPS/GSM tags from Archipel de Molene (France) in 2010-14: metadata
946 octetsCSVQuality controlled data
How to cite
Vincent Cecile (2021). Telemetry data obtained from Fastloc GPS/GSM tracking of 30 harbour seals (Phoca vitulina) and 33 grey seals (Halichoerus grypus), captured in the Baie du Mont-Saint-Michel, Baie des Veys, Baie de Somme, and Archipel de Molene (France), from 2006 to 2013. SEANOE. https://doi.org/10.17882/81033

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