The Apparent Change in Population Structure of Green Turtles (Chelonia mydas) at a Northern Great Barrier Reef Foraging Site Over Three Decades and an Evaluation of Potential Causes

Green Island lies approximately 11 km off the north Queensland coast of Australia. The associated 710-ha reef flat supports a Chelonia mydas foraging population, which has been monitored by the Queensland Government's Threatened Species Program since 1988. Population census data for this area show a significant adult age-class-specific population decline for C. mydas. Preliminary evaluation indicates the decline in adult age-classed turtles is unlikely to be caused by incidental capture, habitat degradation, pollution, change of foraging sites or climate change. Traditional take (locally or during reproductive migrations) provides a plausible explanation. A continuation of this trend may threaten the existence of C. mydas in this part of the Great Barrier Reef World Heritage Area.

Aquatic Conservation: Marine and Freshwater Ecosystems

Aquatic Conservation: marine and freshwater ecosystems

35

1099-0755

N/A

3

11