Almost all coral reef ecosystems face risk of collapse in 50 years, study warns
The world’s coral reef ecosystems almost all face a high risk of collapse in the next 50 years, mostly due to warming oceans and heat waves, according to a global assessment released Thursday. It's the latest dose of bad news for coral reefs, which are critical sources for seafood and tourism and often serve as buffers from coastal erosion and storms. Sometimes dubbed “rainforests of the sea,” they have some of the world’s richest biodiversity. They support a quarter of marine species as well as coastal communities and businesses. Some 96 percent of shallow-water reef systems are already critically endangered and could disappear by 2075, the International Union for Conservation of Nature announced on the sidelines of a U.N. biodiversity conference in Albania. Most of the world’s famous reef systems — including the Great Barrier Reef in Australia, the Coral Triangle in the Western Pacific Ocean and Southeast Asia, the Mesoamerican Barrier Reef System and the Red Sea coral reefs — are all critically endangered, the highest level of threat. “The risk of coral reef collapse i
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