Brief description
This dataset consists of location points obtained from GPS data loggers and Satellite Platform Transmitter Terminals (PTT) attached to dugongs to determine large and fine scale movement patterns within the Shark Bay World Heritage Property (SBWHP). The length of deployment for each animal ranges from 10 days to 11 months with all locations falling within the boundaries of the SBWHP.Lineage
Maintenance and Update Frequency: notPlanned
Statement: - Dataset history -
1. Determination of dugong movement patterns within the SBWHP from GPS and satellite telemetry represents a first for the use of this technology in Western Australia. Methods for data capture and tag attachment developed by CALM in conjunction with members of the Shark Bay Yadgalah Aboriginal Corporation, James Cook University and
Edith Cowan University. Full description of methods in Holley (2006).
2. Accumulated data has been obtained from three different types of location units attached to the tail flukes of dugongs. Satellite-monitored platform transmitter terminals 125 (PTT) and generation II combination GPS/PTT units .(Telonics, Mesa, Arizona). Geographical Positioning System (GPS) data loggers (Lotek Engineering Inc. Ontario,
Canada).
3. PTT's are transmitter platforms which transmit signals at regular intervals which are received by Service Argos receivers aboard NOAA polar-orbiting environmental satellites. At least two satellites are simultaneously in service on sun-synchronous, polar, circular orbits at 850 km altitude, providing full global coverage. Locational accuracy is dependant on signal strength and satellite coverage.
4. Attributes recorded from the PTT units include: Location class, date, time-Western Standard Time and Lat/Long in milliseconds .
5. The GPS units each with an eight channel receiver, log a units position from pulses received from the navstar series of satellites. The GPS units can be user programmed to obtain a position at a rate of between 5min-6hours
6. Attributes recorded on the Lotek GPS units include: Lat/Long-in milliseconds, Date, Time-Western Standard Time, Temperature- Degrees Celsius. Attributes on the Telonics Gen II units include; Lat/Long-in milliseconds, date, Time-Western Standard Time, Temperature- Degrees Celsius.
7. An accuracy attribute is recorded against each location.
8. Deployment and retrieval dates for each unit type are listed below:
PTT UNIT : DATE DEPLOYED : DATE RETREIVED
5519 : 22/03/2000 : 11/12/2000
5065 : 22/03/2000 : 05/04/2000
5534 : 23/03/2000 : 25/10/2000
5536(1) :23/03/2000 : 04/04/2000
5536(2) :06/04/2000 : 28/05/2000
5535 : 23/03/2000 : 23/10/2000
5537 : 22/03/2000 : 16/08/2000
1311 : 16/05/2001 : 01/07/2001
GPS UNIT: DATE DEPLOYED : DATE RETREIVED: FIX ACQUISITION RATE
8001 : 15/08/2000 : 05/10/2000 : 15 MINUTES
8002 : 16/08/2000 : 04/10/2000 : 15 MINUTES
8003 : 16/08/2000 : 03/10/2000 : 15 MINUTES
8004 : 17/08/2000 : 21/09/2000 : 15 MINUTES
8005 : 17/08/2000 : 01/10/2000 : 15 MINUTES
7301 : 18/09/2001 : 28/09/2001 : 20 MINUTES
7001 : 20/09/2001 : 28/09/2001 : 20 MINUTES
0803 : 21/03/2002 : 11/05/2002 : 15 MINUTES
0807 : 17/06/2002 : 25/07/2002 : 15 MINUTES
0606 : 18/06/2002 : 09/08/2002 : 15 MINUTES
0602 : 19/06/2002 : 04/07/2002 : 15 MINUTES
0603 : 20/06/2002 : 02/07/2002 : 15 MINUTES
1. Data are downloaded from the GPS tags in the datum WGS 1984 via a link unit, in a comma delimited file (.csv) Data are then converted into a text delimited file (.txt) and imported in Arcview and converted into shapefiles (.shp). For the PTT units, data are retrieved from service Argos in a spreadsheet format in the datum WGS 1984, then imported into Arcview in the same manner and converted into shapefiles.
Notes
CreditShark Bay Yadgalah Aboriginal Corporation
Credit
James Cook University (JCU)
James Cook University (JCU)
Created: 27 06 2007
Data time period: 2000-03 to 2002-08
text: westlimit=113; southlimit=-27; eastlimit=115; northlimit=-25; projection=Datum - WGS 1984
Subjects
41 206001 |
BIOSPHERE |
Dugong dugon |
EARTH SCIENCE |
ECOLOGICAL DYNAMICS |
Oceans | Marine Biology | Marine Mammals |
Range Changes |
SPECIES/POPULATION INTERACTIONS |
oceans |
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Identifiers
- global : 92529280-2479-11dc-95fb-00188b4c0af8