The flatback turtle (Natator depressus) in Western Australia: new information from the Western Australian Marine Turtle Project.

This record is derived from DEC Marine Policy Branch Endnote library and spatially referenced SIER Database.

Sea turtles and the management of industrial activity in north west Western Australia

Hawksbill turtles are classified Critically Endangered by the IUCN following intense commercial exploitation that decimated global stocks. Despite Australia supporting one of the largest breeding aggregations worldwide, hawksbill turtle biology and ecology remains poorly documented, especially for populations nesting in the Northern Territory. This study focused on the internationally significant hawksbill turtle population breeding in Groote Eylandt in the Gulf of Carpentaria, and aimed at providing high resolution information for managing this critically endangered species. By using multiple state-of-the-art analytical frameworks and combining satellite telemetry, hydrological modelling, and tag recapture data, we (i) assessed habitat utilisation during the inter-nesting and foraging periods, (ii) quantified migratory behaviour for better understanding of navigational strategies , and (iii) simulated post-hatchling dispersal patterns, which we subsequently compared to the location of adult foraging grounds. This metadata record, represents several different datasets listed hereafter, which can all be accessed through a multi-WFS service. CTD - Data parameters measured by the instruments include time, temperature, and depth. The data represented by this record are presented in delayed mode. GPS - Location data parameters measured by the instruments include time, longitude, latitude, location quality, along with other diagnostic information. The Fastloc GPS data represented by this record are presented in delayed mode. Argos - Location data parameters measured by the instruments include time, longitude, latitude, location quality, along with other diagnostic information provided by Argos (http://www.argos-system.org/). The Argos data represented by this record are presented in delayed mode. Haulout - A haulout begins when the SRDL has been continuously dry for a specified length of time (usually 10 minutes). It ends when continuously wet for another interval (usually 40 seconds). Haulout data parameters measured by the instruments include haulout start and end dates and longitude/latitude, and haulout number. The haulout data represented by this record are presented in delayed mode. Diving - Diving data parameters measured by the instruments include start and end time and longitude/latitude of each individual dive, post-dive surface duration, dive duration, maximum dive depth, intermediate dive depths and times. The diving data represented by this record are presented in delayed mode. Summary - As well as sending records of individual events such as dives and haulouts, the SRDL also calculates summary statistics of those events over a specified time period (usually 3, 4 or 6 hours). Summary statistics computed by the instruments include the proportion of time spent diving, at the surface and hauled-out, the number of dives, and the average, standard deviation and maximum dive duration and dive depth during each summary period. These statistics are based on all the data recorded by the SRDL and so are not prone to distortion by variations in the efficiency of transmission via Argos. The summary data represented by this record are presented in delayed mode. Note that it is impossible to subset this particular dataset using a bounding box as there is no latitude, longitude coordinates associated with each entry.

Collection of hatched or discarded (failed to hatch) Sea Turtle eggs for stable isotope analysis to research trophic ecology of Sea Turtles.

Conduct research on Sea Turtles, saturation flipper tagging program of flatback turtles, census beach track count program, satellite tracking program on 10 flatback turtles and light experiments on flatback hatchlings on behalf of Gorgon Development.

The movements, diving behaviour and thermal environment occupied by female olive ridley turtles Lepidochelys olivacea in northern Australia were determined through satellite telemetry, during the post-nesting migration. Satellite-relayed data loggers (SRDLs) were attached to the carapaces of 4 female olive ridley turtles nesting in the Wessel Islands of Arnhem Land in the Northern Territory of Australia (Graham Island: 11° 45’ S, 135° 57’ E and Wunpirri Island: 11° 36’ S, 136° 05’ E). This metadata record, represents several different datasets listed hereafter, which can all be accessed through a multi-WFS service. CTD - parameters measured by the instruments include time, temperature, and depth. The data represented by this record are presented in delayed mode. Diving - parameters measured by the instruments include start and end time and longitude/latitude of each individual dive, post-dive surface duration, dive duration, maximum dive depth, intermediate dive depths and times. The diving data represented by this record are presented in delayed mode. Haulout - a haulout begins when the SRDL has been continuously dry for a specified length of time (usually 10 minutes). It ends when continuously wet for another interval (usually 40 seconds). Haulout data parameters measured by the instruments include haulout start and end dates and longitude/latitude, and haulout number. The haulout data represented by this record are presented in delayed mode. Argos locations - parameters measured by the instruments include time, longitude, latitude, location quality, along with other diagnostic information provided by Argos (http://www.argos-system.org/). The Argos data represented by this record are presented in delayed mode. Summary Statistics - as well as sending records of individual events such as dives and haulouts, the SRDL also calculates summary statistics of those events over a specified time period (usually 3, 4 or 6 hours). Summary statistics computed by the instruments include the proportion of time spent diving, at the surface and hauled-out, the number of dives, and the average, standard deviation and maximum dive duration and dive depth during each summary period. These statistics are based on all the data recorded by the SRDL and so are not prone to distortion by variations in the efficiency of transmission via Argos. The summary data represented by this record are presented in delayed mode. Note that it is impossible to subset this particular dataset using a bounding box as there is no latitude, longitude coordinates associated with each entry.

This record is derived from DEC Marine Policy Branch Endnote library and spatially referenced SIER Database.

This project compiled marine turtle satellite tracking data for four species: green (Chelonia mydas, n=126), flatback (Natator depressus, n=164), hawksbill (Eretmochelys imbricata, n=59) and olive ridley (Lepidochelys olivacea, n=27) turtles, as well as a comprehensive dataset of modelled benthic habitat data from Northern Australia. Tracking data were used to build species-level movement network models to identify connectivity among Australian Marine Parks (AMPs), Indigenous Protected Areas (IPAs) and State Marine Protected Areas (MPAs) across the North and North-West Marine Regions. Tracking datasets were further processed to classify foraging behaviour and quantify foraging activity spaces. Foraging activity spaces were then overlayed with existing modelled benthic habitats using local entropy analysis to assess how well turtle foraging spaces can be used to identify benthic habitats.