Great Barrier Reef: 91% of reefs surveyed suffered coral bleaching in 2022 & More Trending News

Scientists from the Great Barrier Reef Marine Park Authority (GBRMPA) confirmed in March this was the sixth mass bleaching occasion of the reef on file and the fourth since 2016.
But Tuesday’s report, Reef snapshot: summer season 2021-22, discovered virtually each coral reef surveyed throughout the 1,400 mile (2,300 kilometer) system was impacted by bleaching.
Coral reefs are some of essentially the most vibrant marine ecosystems on earth — between 1 / 4 and one third of all marine species depend on them sooner or later in their life cycle. But the speedy warming of the planet on account of human emissions of heat-trapping gases is inflicting above common water temperatures, resulting in stress occasions like mass bleaching.
Coral bleaching tends to occur when water temperatures are a lot hotter than regular. But for the primary time, this mass bleaching comes regardless of La Niña, a climate occasion which is characterised by cooler-than-normal temperatures throughout the equatorial Pacific Ocean, the Authority’s scientists stated.

The report surveyed a complete of 719 reefs from a low flying plane throughout the Australian 2021-2022 summer season season and located that 654 reefs, 91%, “exhibited some bleaching.”

“The surveys confirm a mass bleaching event, with coral bleaching observed at multiple reefs in all regions. This is the fourth mass bleaching event since 2016 and the sixth to occur on the Great Barrier Reef since 1998,” the Australian Government’s Great Barrier Reef Marine Park Authority stated in its findings.

The Great Barrier Reef’s waters began warming in December 2021 and exceeded “historical summer maximums.” It was hit by three distinct warmth waves all through the summer season till early April 2022, which elevated “thermal stress” all through the reef’s central and northern areas, the report discovered.

Stressed coral ejects algae from inside its tissue, depriving it of a meals supply. If circumstances do not enhance, coral can starve and die, turning white as its carbonate skeleton is uncovered.

The Great Barrier Reef is suffering a sixth mass-bleaching event. Here's why scientists are concerned

“Even the most robust corals require nearly a decade to recover,” Jodie Rummer, affiliate professor of Marine Biology at James Cook University in Townsville, instructed CNN in March.

“So we’re really losing that window of recovery. We’re getting back-to-back bleaching events, back-to-back heat waves. And the corals just aren’t adapting to these new conditions,” she stated.

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The report warned that the local weather disaster stays the reef’s best menace and “events that cause disturbances on the reef are becoming more frequent.”

It’s the fourth mass bleaching in six years and the primary since 2020, when about one quarter of the reef surveyed confirmed indicators of extreme bleaching. That occasion got here simply three years after back-to-back bleaching occasions in 2016 and 2017. Previous bleaching occurred in 1998 and 2002.

Scientists say time is operating out for the reefs to have the ability to get well and that governments urgently want to deal with the basis trigger: the local weather disaster.

This picture taken on March 7 shows the current condition of coral on the Great Barrier Reef, off the coast of the Australian state of Queensland.

“To give our reef a fighting chance, we must deal with the number one problem: climate change. No amount of funding will stop these bleaching events unless we drive down our emissions this decade,” stated Amanda McKenzie, CEO of the Climate Council in March.

The Great Barrier Reef is one of Australia’s nationwide treasures, stretching some 1,400 miles (2,300km) down the Queensland coast, and attracting round three million vacationers a 12 months previous to the pandemic.

The Australian authorities has confronted extended stress from UNESCO to show that it is doing sufficient to avoid wasting the reef and has been known as out by world local weather consultants, amongst others, for not doing sufficient to transition Australia away from fossil fuels and slash greenhouse gasoline emissions.

The report’s publication comes after main scientists known as on the company to launch its findings earlier than the federal election on May 21.

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