bleaching tagged posts

Arabian Gulf coral reefs dying a slow death

Persian gulf's declining reefs

The coral content in Arabian Gulf reefs has declined by up to 50 per cent, posing a threat to fish stocks and marine habitats, an expert has warned. Dr John Burt, associate professor of biology at New York University Abu Dhabi (NYUAD), told Gulf News that extreme weather events also creates further stress and causes mass mortality of coral.

“A major weather event called El Nino is expected to occur again this summer. This usually raises water temperatures by 2.5 degrees Celsius. While El Nino’s effects vary, the one in 1998 caused great loss of corals around the world, including in the Arabian Gulf, and many have not yet been able to regenerate,” Dr Burt, who is also head of the NYUAD Marine Biology Laboratory, said.

“It is not usually possible to engineer solutions against wea...

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Can corals adapt to climate change?

Coral bleaching

The severe loss of coral reefs that is expected to occur over the 21st century may be offset somewhat if corals are able to adapt to the heat stress caused by climate change, a new study suggests. The study has uncovered evidence that corals may already be adapting to temperature changes in the ocean. However, reductions in coral bleaching are only expected to continue if greenhouse gas emissions are significantly reduced. The study was published on October 28, 2013 in Global Change Biology.

Coral bleaching is a process whereby warm water temperatures trigger the release of symbiotic algae, called zooxanthellae, living within the coral tissue. The algae supply the coral with valuable nutrients from photosynthesis...

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