Corals Won’t Survive a Warmer Planet, a New Study Finds

If global temperatures continue rising, virtually all the corals in the Atlantic Ocean will stop growing and could succumb to erosion by the end of the century, a new study finds. From a report: The analysis of over 400 existing coral reefs across the Atlantic Ocean estimates that more than 70 percent of the region’s reefs will begin dying by 2040 even under optimistic climate warming scenarios. And if the planet exceeds 2 degrees Celsius of warming above preindustrial temperatures by the end of the century, 99 percent of corals in the region would meet this fate. Today, the planet has warmed about 1.3 degrees Celsius over preindustrial temperatures.

The implications are grave. Corals act as the fundamental building blocks of reefs, providing habitat for thousands of species of fish and other marine life. They are also bulwarks that break up waves and help protect shorelines from rising sea levels. A quarter of all ocean life depends on coral reefs and over a billion people worldwide benefit from them, according to the National Oceanic and Atmospheric Administration.