Full Record - Leopard seal geolocation and activity data from Bird Island, South Georgia, 2003 to 2013

Leopard seal geolocation and activity data from Bird Island, South Georgia, 2003 to 2013

GB/NERC/BAS/PDC/01083

Abstract:
These are light level and activity data collected from BAS geolocators that were deployed on 4 Leopard Seals hauled out on Bird Island, South Georgia. Tags were deployed between May 2003 and June 2013. One seal Y5282(B4942) was tracked during two non-consecutive years using two different identification flipper tags. There are three data types for each seal a) the unprocessed light sensor data b) the unprocessed activity (wet/dry) data and c) The estimated positions estimated using the BAStag and SGAT packages in R. All files are in the CSV format and each folder has a readme.txt file describing the data structure of the files within. The data are reported in detail in Staniland et al. 2018 'Long Term Movements and Activity Patterns of an Antarctic Marine Apex Predator: The Leopard Seal' PLOSone

Citation:
Staniland, I. (2018). Leopard seal geolocation and activity data from Bird Island, South Georgia, 2003 to 2013 (Version None) [Data set]. Polar Data Centre, Natural Environment Research Council, UK Research & Innovation, UK. https://doi.org/10.5285/ad4aa321-06dc-42c1-892b-fbcd92f1f296

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https://ramadda.data.bas.ac.uk/repository/entry/show/?entryid=ad4aa321-06dc-42c1-892b-fbcd92f1f296

License

Access:	No restrictions.
Use:	This data is governed by the NERC data policy http://www.nerc.ac.uk/research/sites/data/policy/ and supplied under Open Government Licence v.3 http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/.

Authors

Name	UK PDC
Role(s)	Metadata Author
Organisation	British Antarctic Survey

Name	Dr Iain Staniland
Role(s)	Investigator, Technical Contact
Organisation	British Antarctic Survey

Basic Information

Creation Date:	2018-05-21
Dataset Progress:	Complete
Dataset Language:	English
ISO Topic Categories:	Biota Oceans
Parameters:	Biosphere > Ecological Dynamics > Migratory Rates/Routes Oceans > Marine Biology > Marine Mammals

Additional Information

Reference:	Staniland et al. (2018) Long Term Movements and Activity Patterns of an Antarctic Marine Apex Predator: The Leopard Seal, PLOSone (in press)
Quality:	Data were corrected for any clock drift over time using the 'decompressor' programme and the startup times of each tag.
Lineage/Methodology:	Data was downloaded from BAS GLS tags using proprietary BAStrack software 'decompressor'. Clock drift was accounted for using the startup time of each tag. Loggers measured light levels every 60 seconds recording the maximum light level in a 10 minute period. Salt-water immersion was assessed every 3 s and the number of positive saltwater tests in each 10 min interval recorded: an immersion value of 0 indicates that the logger was completely dry and 200 that it was completely wet. Processed Estelle data was created from the light data using the BAStag and SGAT packages in R. Full details of the processing can be found in the Staniland et al (2018) PLOSone paper.

Extent

Temporal Coverage:
Start Date	2003-05-18
End Date	2013-06-13

Spatial Coverage:
Latitude
Southernmost	-75
Northernmost	-40
Longitude
Westernmost	-55
Easternmost	-30
Altitude
Min Altitude	N/A
Max Altitude	N/A
Depth
Min Depth	N/A
Max Depth	N/A

Location:
Location	Antarctica
Detailed Location	Scotia Sea
Location	Antarctica
Detailed Location	Bird Island
Location	Antarctica
Detailed Location	South Georgia
Location	Antarctica
Detailed Location	South Orkney Islands
Location	Antarctica
Detailed Location	Weddell Sea

Instrumentation

Data Collection:

Data were collected by BAS MK7 and M9 GLS (geolocator) tags.

Tag	Sex	Date deployed	Date recovered	Duration (days)
Y5282 (B4942)	Male	18/05/2003	26/08/2004	466
Y5282 (B4942)	Male	24/07/2012	13/06/2013	324
B4943	Male	02/08/2012	09/05/2013	280
G5719	Female	07/07/2011	09/06/2012*	142
W7604	Male	07/09/2007	24/05/2008	260

*tag failed on 26/011/2011

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