Geography of India Current Affairs Analysis
Researchers from Switzerland and United States have developed a risk index for mangroves as well as associated biodiversity and ecosystem.
Over 56 per cent of the world's mangroves could be at high or severe risk, under the worst-case scenario.
About 34 per cent of the most valuable mangroves, could face very serious and possibly irreversible damage.
This is called a "regime shift", meaning the ecosystem may change completely and may not recover.
The Philippines is one of the most at-risk countries.
It has over 260,000 hectares of mangroves and already gets hit by many storms.
Mangroves alone provide $65 billion worth of flood protection each year.