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Hottest oceans in 400 years threaten Great Barrier Reef, scientists say

Water temperature levels in and around Australia's Fantastic Barrier Reef have increased to their warmest in 400 years over the previous decade, placing the world's. largest reef under threat, according to research published on. Thursday.

The reef, the world's largest living environment, stretches. for some 1,500 miles (2,400 km) off the coast of the northern. state of Queensland.

A group of scientists at universities across Australia. drilled cores into the coral and, much like counting the rings. on a tree, evaluated the samples to determine summer season ocean. temperature levels going back to 1618.

Integrated with ship and satellite information going back around a. hundred years, the results reveal ocean temperature levels that were. stable for hundreds of years begin to rise from 1900 onwards as. an outcome of human impact, the research concluded.

From 1960 to 2024, the research study's authors observed an average. annual warming for January to March of 0.12 ° C( 0.22 ° F) per.

decade. Because 2016, the reef has actually experienced 5 summertimes of mass. coral whitening, when big sections of the reef turn white due. to heat tension, putting them at greater danger of death.

These summer seasons were throughout five of the 6 warmest years in. the last four centuries, the study showed.

The world is losing one of its icons, said Benjamin. Henley, a scholastic at the University of Melbourne and among. the research study's co-authors.

I find that to be an outright disaster. It's difficult to. understand how that can occur on our watch in our life time. So. it's really, extremely sad.

The last temperature level information point, from January to March of. this year, was the greatest on record and head and shoulders. above any other year, Henley stated.

Coral reefs secure shorelines from disintegration, are home to. thousands of types of fish, and are a crucial source of. tourism income in lots of nations.

At least 54 nations and areas have experienced mass. bleaching of their reefs since February 2023 as environment modification. warms the ocean's surface waters, the U.S. National Oceanic and. Atmospheric Administration (NOAA) has actually said.

The Great Barrier Reef is not presently on UNESCO's list of. world heritage sites that remain in risk, though the UN. advises it must be included.

Australia has actually lobbied for years to keep the reef - which. contributes A$ 6.4 billion

(source: Reuters)