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Scientists: Coral reefs across the world could be extinct by 2100th

Global warming and water oxidation in the oceans could wipe out all coral reefs by the 2100th, reports in. The Daily Mail.
Scientists at the University of Hawaii at Manoa found that climate change brought on by human activity greenhouse gases are on track to wipe out between 70 and 90 per cent of coral reefs over the next 20 years. Making projects to protect coral reefs, including on the Great Barrier Reef off the coast of Australia, will also face serious challenges in the coming years. Future pollution resulting from human activity will have small consequences as far as the destruction of coral habitats is concerned, as man has already caused major damage to reefs. “By the 2100th, the picture will be creepy,” reassured biogeography expert Renee Setter of the university.

Warmer water as a consequence of rising ocean temperatures stresses the corals by causing them to release themselves from the algae to which they owe 90 per cent of their energy. This leads to coral bleaching. Bleached corals are not dead, but they are at an increased risk of death. Scientists have for years warned of the danger of coral bleaching. Such bleaching led to the destruction of about 30 per cent of corals in the Great Barrier Reef in 2016. Corals can survive bleaching if they quickly enough get nutrients. Otherwise they die within days, reports BTA.

Scientists made attempts to carry out a transplant of laboratory-grown corals in dying reefs in the ocean. It was thought that laboratory-grown corals would boost reef recovery. However, the survival rate of transplanted corals was low in a number of cases.

Within the framework of their research, Setter and her colleagues mapped areas in the ocean where efforts would be good to be made to restore coral reefs. Simulations were made of ocean surface temperature, wave strength, water acidity, pollution and overfishing in areas where there are corals. Scientists found that most areas where corals live today would not be a suitable habitat for them by 2045. Areas that are a suitable habitat for corals will decline further by the 2100th. Then only some parts of the Gulf of California and the Red Sea would be a suitable environment for coral.


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