The future for sharks: adapt, move, or die
A new study suggests sharks will need to adapt, move or die as climate change could soon render their nurseries uninhabitable. Baby sharks rely on coastal nursery-like spaces such as shallow lagoons
ARC Centre of Excellence for Coral Reef Studies
James Cook University Townsville
Queensland 4811 Australia
Phone: 61 7 4781 4000
Email: info@coralcoe.org.au
A chief investigator at the James Cook University based ARC Centre of Excellence for Coral Reef Studies has been awarded a Churchill Fellowship.
Dr Morgan Pratchett, an Australian Research Fellow, will use the Quicksilver Connections Churchill Fellowship for travel to the UK to work with Professor Nick Polunin at the University of Newcastle upon Tyne
Morgan Pratchett
His project looks at how much reef fish rely on coral to survive, particularly in the context of the potential loss of coral and climate change.
“This project will employ stable isotope methodologies to better understand trophic links between corals and fishes,” Dr Pratchett said.
“Importantly, it seems we may have underestimated the range of coral reef fishes that need coral for their survival.”
He said the links were critical to establishing potential effects of coral loss caused by climate-induced coral bleaching, “which is currently the most significant global threat to coral reef ecosystems”.
Dr Patchett said that the research would build on prior work on the feeding ecology of butterflyfishes, where coral consumption has been established by visual observations.
“However, using stable isotopes will formally establish which fishes obtain part of their nutritional requirements from live corals,” he said.
Dr Pratchett has conducted extensive research on population dynamics of scleractinian corals, and links between corals and other coral reef organisms, especially coral reef fishes.
“My doctoral research explored effects of outbreaks of crown-of-thorns starfish on both coral populations and coral-dependent reef fishes – specifically, coral feeding butterflyfishes and coral-dwelling damselfishes.
“This research identified considerable complexities in the interactions between coral reef fishes and scleractinian corals, but also demonstrated that any disturbances affecting scleractinian corals such as outbreaks of crown-of-thorns starfish, but also climate induced coral bleaching may have significant indirect effects on coral reef fishes.”
More information:
Dr Pratchett +61 7 4781 5747 or +61 0410 471801
www.churchilltrust.com.au
A new study suggests sharks will need to adapt, move or die as climate change could soon render their nurseries uninhabitable. Baby sharks rely on coastal nursery-like spaces such as shallow lagoons
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Partner Research Institutions
ARC Centre of Excellence for Coral Reef Studies
James Cook University Townsville
Queensland 4811 Australia
Phone: 61 7 4781 4000
Email: info@coralcoe.org.au