1

People and ecosystems

Understanding of the links between coral reef ecosystems, the goods and services they provide to people, and the wellbeing of human societies.

2

Ecosystem dynamics: past, present and future

Examining the multi-scale dynamics of reefs, from population dynamics to macroevolution

3

Responding to a changing world

Advancing the fundamental understanding of the key processes underpinning reef resilience.

Coral Bleaching

Coral Bleaching

Coral Reef Studies

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

Menu Image Menu Image Menu Image Menu Image Menu Image Menu Image Menu Image
Menu
Facebook Twitter YouTube FlickR

More coral babies staying at home on future reefs

29
Apr 2014

Researchers have found that increasing ocean temperatures due to climate change will soon see reefs retaining and nurturing more of their own coral larvae, leaving large reef systems less interconnected and potentially more vulnerable.

“We found that at higher temperatures more coral larvae will tend to stay on their birth reef,” says the lead author of the study published today, Dr Joana Figueiredo from the ARC Centre of Excellence for Coral Reef Studies (Coral CoE) at James Cook University.

“This is good news in an otherwise cloudy picture for isolated reefs, because in the future they will be able to retain more of their own larvae and recover faster from severe storms or bleaching events,” she adds.

Professor Sean Connolly, also from the Coral CoE, explains that while more coral larvae will stay close to their parents, fewer will disperse longer distances, leaving reefs less connected.

“The loss of connectivity can make reef systems such as the Great Barrier Reef more vulnerable,” he said.

“So interconnected reef systems that depend on the recruitment of coral larvae may take more time to recover after a disturbance, such as a cyclone, because fewer larvae will disperse from other reefs to the disturbed reef.”

Professor Connolly adds that weaker connections between reefs means warm-adapted corals, such as those in the northern Great Barrier Reef, may take longer to expand their ranges to the south.

Similarly for isolated reefs, Dr Saki Harii from the University of the Ryukyus says, “While isolated reefs can retain more of their own larvae, this also leaves them with fewer possibilities to change their species composition to adjust to climate change.”

Professor Andrew Baird from the Coral CoE says the implications of the research present management with both challenges and opportunities.

“Our results demonstrate that global warming will change patterns of larval connectivity among reefs. On a positive note, the stronger link between adults and recruits means an even greater benefit if we reduce local threats such as dredging and fishing methods that can damage corals,” Professor Baird says.

Nevertheless, he explains, “This does not reduce the need for global action on climate change.”

Increased local retention of reef coral larvae as a result of ocean warming by Joana Figueiredo, Andrew H. Baird, Saki Harii and Sean R. Connolly appears in Nature Climate Change.

The full paper and additional images are available on request.

CONTACTS

Dr Joana Figueiredo, Coral CoE, (and now at Oceanographic Center at Nova Southeastern University), +1 954-262-3638, jfigueiredo@nova.edu
Prof Sean Connolly, Coral CoE, (07) 4781 4242 sean.connolly@jcu.edu.au
Prof Andrew Baird, Coral CoE, (07) 4781 4857, andrew.baird@jcu.edu.au
Dr Saki Harii, University of the Ryukyus, +81-980-47-6073,sharii@lab.u-ryukyu.ac.jp
Jenny Lappin, Coral CoE, (07) 4781 4222,jennifer.lappin@jcu.edu.au
Melissa Lyne, media liaison, 0415 514 328, melissa.lyne@gmail.com

Goniastrea aspera releasing egg sperm bundles. Credit: Andrew Baird
Goniastrea aspera releasing egg sperm bundles. Credit: Andrew Baird

Seminars

More
Australian Research Council Pandora

Partner Research Institutions

Partner Partner Partner Partner
Coral Reef Studies

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