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Hottest oceans in 400 years endanger Great Barrier Reef, researchers state

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

The reef, the world's largest living ecosystem, 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, analysed the samples to determine summer season ocean. temperatures going back to 1618.

Integrated with ship and satellite information returning around a. hundred years, the outcomes show ocean temperatures that were. steady for centuries begin to increase from 1900 onwards as. a result of human impact, the research concluded.

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

years. Since 2016, the reef has actually experienced five summer seasons of mass. coral bleaching, when big areas of the reef turn white due. to heat tension, putting them at higher risk of death.

These summers were during five of the six warmest years in. the last four centuries, the research study revealed.

The world is losing one of its icons, stated Benjamin. Henley, an academic at the University of Melbourne and one of. the research study's co-authors.

I discover that to be an outright tragedy. It's hard to. comprehend how that can occur on our watch in our lifetime. So. it's really, really sad.

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

Reef safeguard shorelines from erosion, are home to. countless species of fish, and are an important source of. tourism profits in numerous countries.

At least 54 countries and regions have experienced mass. whitening of their reefs since February 2023 as climate 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 websites that remain in threat, though the UN. suggests it should be added.

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

(source: Reuters)