Fish key to reef climate survival

A healthy fish population could be key to ensuring coral reefs survive the impacts of climate change, pollution, overfishing and other threats.
[2009-05-22]
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Australian scientists found that some fish act as ‘lawnmowers’, keeping coral free of kelp and unwanted algae.
In recent year, Marine Protected Areas have been set up along the Great Barrier Reef in order to provide sanctuaries where fish and other marine creatures can grow and develop. This protected area status is rebuilding fish populations in some parts of the Great Barrier Reef.
Warming seas are likely to affect the reef severely within a few decades. Because sea temperatures are now a lot higher, they are now reaching the thresholds at which coral get into distress. Scientists have also learned just how small a temperature increase it takes to put the reefs in distress
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