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Geoengineering of the climate may be the only way to save coral reefs from mass bleaching, according to new research.
Coral reefs are considered one of the most vulnerable ecosystems to future climate change due to rising sea surface temperatures and ocean acidification, which is caused by higher atmospheric levels of carbon dioxide.
Mass coral bleaching, which can lead to coral mortality, is predicted to occur far more frequently over the coming decades, due to the stress exerted by higher seawater temperatures.
Scientists believe that, even under the most ambitious future CO2 reduction scenarios, widespread and severe coral bleaching and degradation will occur by the middle of this century.
The collaborative new research, which includes authors from the Carnegie Institution for Science, the University of Exeter, the Met Office Hadley Centre and the University of Queensland, suggest that a geoengineering technique called Solar Radiation Management (SRM) reduces the risk of global severe bleaching.
The SRM method involves injecting gas into the stratosphere, forming microscopic particles which reflect some of the sun’s energy and so help limit rising sea surface temperatures.
The study compared a hypothetical SRM geoengineering scenario to the most aggressive future CO2 reduction strategy considered by the Intergovernmental Panel on Climate Change (IPCC), and found that coral reefs fared much better under geoengineering despite increasing ocean acidification.
Read more:Â Climate engineering may save coral reefs, study shows
The Latest on: Coral bleaching
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The Latest on: Coral bleaching
- Best practices in coral bleaching preparedness at UNESCO World Heritage marine siteson August 11, 2022 at 3:27 am
On 13 July 2022, experts in coral bleaching preparedness and local management teams from UNESCO World Heritage coral reefs met online to share best practices to recognize bleaching alerts and rapidly ...
- The Great Barrier Reef has record coral cover. It may not matteron August 8, 2022 at 6:00 am
High coral cover findings can be just a few dominant species that grow rapidly after a disturbance but are likely to die out within a few years.
- Good news on climate change? Australia’s Great Barrier Reef has healthiest coral in 36 yearson August 6, 2022 at 11:50 am
Australian Institute of Marine Science says results in north and central regions are a sign the reef could still recover, but loss elsewhere highlights risks.
- Record coral cover doesn’t necessarily mean the Great Barrier Reef is in good health (despite what you may have heard)on August 4, 2022 at 8:35 pm
New data shows coral cover in the Great Barrier Reef is at a record high, despite a disturbing decade of marine heatwaves, cyclones and floods. While the data is robust, it can be deceptive.
- Parts of Great Barrier Reef record highest number of coral in nearly 4 decades, scientists sayon August 4, 2022 at 10:20 am
A survey found that between August 2021 and May 2022, average hard coral cover in two areas of the Great Barrier Reef increased by about one-third.
- 'Mass coral bleaching events' fuel fears climate change will damage ALL reefson August 4, 2022 at 9:12 am
MASS CORAL BLEACHING events and other phenomena linked to climate change are increasing in frequency, putting reefs in Australia at stake, marine scientists have warned.
- Coral Bleachingon August 4, 2022 at 2:55 am
Loss of algae causes coral bleaching, making them vulnerable to disease Under environmental stress, such as a change in temperature, The Barron's news department was not involved in the creation of ...
- Parts of Great Barrier Reef record highest amount of coral in 36 yearson August 4, 2022 at 2:43 am
The reef is still under threat, but the new findings show it could still recover from mass bleaching and outbreaks of crown-of-thorns starfish that feed on coral.
- Great Barrier Reef has most coral in decades. Global warming could reverse it.on August 4, 2022 at 12:56 am
Parts of the Great Barrier Reef have recorded their highest levels of coral cover since the 1980s, but scientists say climate change could undo the recovery.
- Great Barrier Reef coral cover at record levels after mass-bleaching events, report showson August 3, 2022 at 2:25 pm
Record coral cover is being seen across much of the Great Barrier Reef as it recovers from past storms and mass-bleaching events. But the new coral taking over is leaving the reef more vulnerable to ...
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