Top marine scientists warn reefs in rapid decline

Coral reefs provide food and work for countless coastal inhabitants globally,generate significant revenues through tourism and function as a natural breakwater for waves and storms,they said.

The statement,endorsed by the forum attendees and other marine scientists,called for measures to head off escalating damage caused by rising sea temperatures,ocean acidification,overfishing and pollution from the land.

“There is a window of opportunity for the world to act on climate change,but it is closing rapidly,” said Terry Hughes,convener of the symposium,held every four years,which attracted some 2,000 scientists from 80 countries.

Jeremy Jackson,senior scientist at the Smithsonian Institution in the United States,said reefs around the world have seen severe declines in coral cover over the last several decades.

In the Caribbean,for example,75-85 per cent of the coral cover has been lost in the last 35 years.

Even the Great Barrier Reef in Australia,the best-protected reef ecosystem on the planet,has witnessed a 50 per cent decline in the last 50 years.

Jackson said while climate change was exacerbating the problem,it was also causing increased droughts,agricultural failure and sea level rises at increasingly faster rates,

which implied huge problems for society.

“That means what’s good for reefs is also critically important for people and we should wake up to that fact,” he said