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Thursday, July 21, 2011

Climate Change Update: Coral reef species may adjust to climate change

Coral reef species may adjust to climate change: "Ocean acidification occurs when excess carbon dioxide in the atmosphere is absorbed by the ocean. Too much carbon dioxide reduces the availability of calcium carbonate, the building block of coral skeletons.

The rate of adaptation for many species could be increased if human activities such as fishing and runoff were managed appropriately.

To increase the ability for a species to adapt to one stress, others needed to be reduced, Professor Connolly said.

'The organisms that have an unusually good ability to cope with high temperatures and ocean acidification have to be able to survive and reproduce offspring that also have those tolerances. But if there is also a lot stress from coastal development [and] runoff then they can die out,' he said.

Authorities also needed to ensure populations of marine species did not decline dramatically."

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