Led by Mariana Fuentes, a James Cook University team working up in the northern end of the Great Barrier Reef has been evaluating the various climatic threats facing the green turtles..
Under the worst-case scenarios for climate change – which is pretty much the trajectory we are on – sea-level rise, and the consequent impact on nesting sites, shapes up as the biggest threat for the turtles from now until 2030. But by 2070, the models anticipate sands will have reached a temperature which would bring about a near-complete feminisation of hatchlings.
A few male enclaves are likely to survive where conditions provide some respite from the heat. But the overall picture is grim.
Sydney Morning Herald, 30 Apr 2011