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Australian marine reserves provide safe passageway for endangered species

The value of Australia's newly established network of marine parks has been highlighted by an international project that used satellites to track the vulnerable flatback sea turtle. The findings are published in Springer's journal Marine Biology. In the study, researchers from Deakin University (Australia), Swansea University (U.K.) and Pendoley Environmental consultancy (Australia) used advanced satellite tracking systems to record the passage of more than 70 flatbacks off the north-west Australian coastline.

A high value migratory corridor, more than 1,000 kilometres in length, was pinpointed, with about half the corridor contained within the network of marine reserves.

"Our findings show that much of the flatback turtle's transit passage between its breeding colonies and foraging grounds falls within the newly established Commonwealth Marine Reserve network," said Deakin University animal movement expert Professor Graeme Hays, co-author of the study.

These findings will help refine ongoing conservation planning to protect this wide-ranging turtle species using the Australian coast, including the identification of high-use areas outside the existing reserve network. The migration corridor is located tens of kilometres from the Australian mainland and spans tens of kilometres in width. The flatback and other marine species in the area may be susceptible to accidental mortality, such as collision with vessels and fishery bycatch.

Tracking devices were attached to the turtle's soft shell using a flexible harness that detached after about 12 months use. A signal, depicting the turtle's position, was transmitted in real-time to a constellation of satellites known as the 'Argos system' as turtles surfaced to breathe about once every 10 to 15 minutes.

The research also highlights how whales, sharks and turtles share a common migration corridor, which was previously unknown. Professor Hays says the team's findings can help inform conservation planning to ensure the flatback turtle is protected throughout its range which may span many hundreds or even thousands of kilometres.

"The network of Australian marine reserves may also serve as a template for marine conservation elsewhere in the world. In recognition of the plight of the vulnerable flatback turtle, long-term conservation research programs are being developed to help protect this iconic species," concludes Hays.


Contact: Saskia Rohmer

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