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Home / Science / New study says that the Great Barrier Reef has died five times in the last 30,000 years

New study says that the Great Barrier Reef has died five times in the last 30,000 years



The researchers expect that similar dying will occur "sometime in the next millennia," provided the reef follows earlier geographic trends.

Several reports and studies have extensively reported how Australia's Great Barrier Reef is dying as bleaching and warmer water temperatures continue to affect the corals of the system. While a new study suggests that the reef has nearly died five times in the last 30,000 years, the researchers behind the paper warned that the pressures that threaten the system are far more significant than during the short-extinct periods.

As detailed in a study in the journal Nature Geoscience a multinational research team extended its observations beyond the current Great Barrier Reef to see how close it was to death on repeated occasions last several thousand years. After Newsweek researchers searched for places where corals could have grown in ancient times, then collected coral fossils and sediments that emerged 30,000 years ago after drilling into the seabed.

According to the researchers, "Findings, low sea levels were the reason why the Great Barrier Reef was about to die 30,000 years ago and 22,000 years ago, after the last ice age, as the corals died out due to the action of the air and the remaining reefs Changing their position and surviving what had been a shabby call to the system as a whole, sea-level rise meant that massive coral populations dwindled between 1

3,000 and 17,000 years ago in two separate cases, but in these two cases the coral moved closer ashore.

A combination of factors led to the formation of corals The fifth and final coral extinction of the reef, as the researchers cited the poor water quality, sea level rise, and sediment overflow as the reasons for the event 10,000 years ago, with all the migrations that took place when d As the Great Barrier Reef tried to survive the mortals, the team believes its modern incarnation consolidated about 9,000 years ago.

Facing the current situation where coral bleaching is a major concern Out of concern for those trying to rescue the Great Barrier Reef, senior author and researcher at the University of Sydney, Jody Webster, said he's "very worried" about it (19659007) The sadness of a Great Barrier Reef dive and the hope of trauma might remind us to take climate change seriously https://t.co / apsFakwSD6

– Bill McKibben (@billmckibben) May 31, 2018

Mark Eakin, an ecologist at the National Oceanic and Atmospheric Administration, who did not participate in the study, said that the deaths of the Great Barrier Reef from ancient times are similar to what things are in modern times. But instead of fluctuating sea levels, warmer water temperatures were largely responsible for the stresses experienced by the reef, as heat waves led to strong coral bleaching.

"Do not expect reefs to strike back fast" Eakin said Science magazine

Although Webster did not say that the current situation at the Great Barrier Reef immediately leads to a similar death to what He has been through historically, he said, that such an event could take place "sometime in the next few thousand years" after Newsweek . It is not clear that man-made climate change will cause the event to happen sooner than expected, but Webster noted that his timeline could be accurate if the reef "follows its geological pattern."


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