Bleached Corals In The Pacific Have Started Bouncing Back

2016-11-18T13:25:18+00:00 November 18, 2016|
"Bleaching" of coral can be caused by warmer than normal ocean temperatures. (Credit: Great Barrier Reef Park  /  AFP - Getty Images file)

(Click to enlarge) “Bleaching” of coral can be caused by warmer than normal ocean temperatures. (Credit: Great Barrier Reef Park / AFP – Getty Images file)

In a ghost town of dead coral off a remote Pacific island, scientists have found a little more life.

In excursions a year ago and then last April, scientists examined the normally-stunning coral reefs around the island of Kiritimati and pronounced it mostly a boneyard of dead coral.

About 85 per cent of the coral was dead, 10 per cent was sick and bleached but still technically alive, and only 5 per cent was doing okay.

(From New Scientist)– The same scientists returned this month and found that 6 to 7 per cent of the coral is alive and not bleached, says Julia Baum, coral reef scientist from the University of Victoria, in Canada.

“We left with a sense of dread and came back with a renewed purpose because there are some corals that literally came back from the brink,” says Kim Cobb, climate scientist from Georgia Tech in the US, who returned from the expedition earlier. “It’s the best we could have hoped for.”

Many of the fish that rely on the reef and had been absent seem to be back, Cobb says.

Hot water – mostly from El Niño, the natural occasional warming of the Pacific that changes weather worldwide, and man-made global warming – had made the area one of the worst-hit coral spots in the world.

Later, nearby Jarvis Island was even more damaged. And the death of 85 per cent of the coral of the better-known and much larger Great Barrier Reef has been reported, says Mark Eakin, coral reef watch co-ordinator for the National Oceanic and Atmospheric Administration.

“But despite this mass mortality, there are a few small signs of hope,” Baum says. “It’s clear that coral reefs have great resilience and the coral here is trying to recover.”

Read the full article here: https://www.newscientist.com/article/2113270-bleached-corals-in-the-pacific-have-started-bouncing-back/