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
Bell, Ian P, Freeman, Alastair B, McKenzie, Len J, Yoshida, Rudi L, Miller, Jeffrey D, Ariel, Ellen, and Limpus, Colin J (2025) 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. Aquatic Conservation: marine and freshwater ecosystems, 35 (3). e70078.
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Abstract
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.
| Item ID: | 88263 |
|---|---|
| Item Type: | Article (Research - C1) |
| ISSN: | 1099-0755 |
| Keywords: | anthropogenic threat, Chelonia mydas, Great Barrier Reef, Green Island, population structure, seagrass, traditional harvest |
| Copyright Information: | © 2025 John Wiley & Sons Ltd. |
| Date Deposited: | 07 Apr 2026 06:42 |
| FoR Codes: | 31 BIOLOGICAL SCIENCES > 3103 Ecology > 310305 Marine and estuarine ecology (incl. marine ichthyology) @ 100% |
| SEO Codes: | 18 ENVIRONMENTAL MANAGEMENT > 1805 Marine systems and management > 180504 Marine biodiversity @ 100% |
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