Western Australian Loggerheads - Dirk Hartog 2015-2016
Aubrey Strydom
Dataset credit
Data provider Aubrey Strydom Originating data center Satellite Tracking and Analysis Tool (STAT)Project partner Aubrey Strydom Western Australia Department of Parks and Wildlife Marine Science Program Shark Bay Marine Park
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Contacts
Role | Name | Organization | |
Primary contact |
Aubrey Strydom |
Aubrey Strydom |
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Data entry |
Michael Coyne |
seaturtle.org |
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Citation
Aubrey Strydom . 2018. Western Australian Loggerheads - Dirk Hartog 2015-2016. Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/1366) on yyyy-mm-dd and originated from Satellite Tracking and Analysis Tool (STAT; http://www.seaturtle.org/tracking/index.shtml?project_id=1150). Halpin, P.N., A.J. Read, E. Fujioka, B.D. Best, B. Donnelly, L.J. Hazen, C. Kot, K. Urian, E. LaBrecque, A. Dimatteo, J. Cleary, C. Good, L.B. Crowder, and K.D. Hyrenbach. 2009. OBIS-SEAMAP: The world data center for marine mammal, sea bird, and sea turtle distributions. Oceanography. 22(2):104-115.
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Abstract
Dirk Hartog Island Loggerhead Turtle Tagging:
Dirk Hartog Island, covering 63,000 hectares is Western Australia’s largest island, forming a protective barrier to the shallow waters of Shark Bay. The Loggerhead turtle rookery at Turtle Bay on the north coast of the island is Western Australia’s largest and is of international significance. The Island and Bay are part of the Shark Bay World Heritage Property protected for its significant ongoing geological and biological processes and habitats for a number of threatened species.
To the north lies the Ningaloo Reef, Australia’s largest fringing coral reef, boasting spectacular coral formations, abundant fishes and species with special conservation significance such as turtles, whale sharks, dugongs, whales and dolphins. Ningaloo Marine Park was first gazetted in 1987 to recognise and protect this diverse biological hotspot with amendments made to park boundaries on 30 November 2004 to encompass the whole of the Ningaloo Reef. The Department of Parks and Wildlife is the primary manager of these reserves.
Dirk Hartog Island, Shark Bay, the Muiron islands and the beaches of the Ningaloo coast provide an important habitat and relatively undisturbed nesting area for the loggerhead (Caretta caretta), green (Chelonia mydas) and hawksbill (Eretmochelys imbricata) turtles between November and March each year. Flatback and leatherback turtles have also been recorded foraging occasionally along this coast.
In recognition of these important and diverse reserves, the Ningaloo Reef and surrounding area was bestowed the highest level of international recognition with its inscription on the World Heritage List for its natural beauty and biological diversity in June 2011. The Ningaloo World Heritage Area encompasses 604,500ha in total, including the Muiron Islands Marine Management Area, Ningaloo Marine Park, Cape Range National Park, the Learmonth Air Weapons Range and Bundegi and Jurabi Coastal Parks.
The nesting range of loggerhead turtles in Western Australia extends from Dirk Hartog Island in the south to the Muiron Islands in the north, with important rookeries in between, including Gnaraloo Bay, Cape Farquhar, Janes Bay and Bungelup in the Ningaloo Marine Park.
Satellite tagging at Dirk Hartog Island is part of a broader coordinated program in the 2015/16 season to understand inter-nesting movements, post-nesting migration, identify foraging grounds and potential threats across their entire nesting range in Western Australia with loggerhead turtles also tagged at South Muiron Island and Gnaraloo.
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Purpose
N/A
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Supplemental information
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References
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Attributes
Overview
This section explains attributes included in the original dataset.
OBIS-SEAMAP restricts the attributes available to the public to date/time, lat/lon and species names/counts only.
Should you need other attributes described here, you are encouraged to contact the data provider.
Attributes described below represent those in the original dataset provided by the provider.
Only minimum required attributes are visible and downloadable online. Other attributes may be obtained upon provider's permission.
Attributes in dataset
Attribute (table column) | Description |
prognum | Program number |
tag_id | PTT ID |
lc | Location class |
iq | Quality indicator |
dir1 | Dir 1 |
nb_mes | Number of messages received |
big_nb_mes | definition not provided |
best_level | Best signal strength in dB |
pass_duration | Pass duration in seconds |
nopc | Number Of Plausibility Checks successful (from 0-4) |
calcul_freq | Calculated frequency |
altitude | Altitude used for location calculation |
sensors | Sensors |
species | Species name |
project_id | STAT Project ID |
lc_filter | Parameters to location filtering |
speed_filter | Parameters to speed filtering |
distance_filter | Parameters to distance filtering |
topo_filter | Parameters to topo filtering |
time_filter | Parameters to time filtering |
angle_filter | Parameters to angle filtering |
life_stage | Life stage of the animal |
gender | Gender of the animal |
wetdry | Wet or dry |
wetdry_filter | Parameters to Wet or dry filterint |
obs_datetime | Date and time (local time zone) |
timezone_h | Time difference from UTC |
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OBIS-SEAMAP ID | 1366 |
Seabirds | 0 |
Marine mammals | 0 |
Sea turtles | 8,117 |
Rays and sharks | 0 |
Other species | 0 |
Non spatial | 0 |
Non species | 0 |
Total | 8,117 |
Date, Begin | 2016-01-21 |
Date, End | 2016-12-13 |
Temporal prec. | 111111 |
Latitude | -26.47 - -18.30 |
Longitude | 112.82 - 122.00 |
Coord. prec. | 3 decimal digits |
Platform | Tag |
Data type | Telemetry location |
Tracklines | YES (ID: 1367) |
if ($show_effort_stat) {
?>
Traveled (km) | 25,348 |
Travel hours | 34,989 |
}
if ($sources != null and $sources != "" and $dataset_id != 427) { // Do not show ESAS
?>
Contr. through | Satellite Tracking and Analysis Tool |
}
?>
Registered | 2016-03-15 |
Updated | 2018-11-20 |
Status | Not published |
Sharing policy |
Permission required |
Shared with |
SWOT OBIS* * Aggregated summary |
See metadata in static HTML |
See metadata in FGDC XML |
See download history / statistics |
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