coral bleaching hits 93 of great barrier reef
Last Updated : GMT 05:21:58
Arab Today, arab today
Arab Today, arab today
Last Updated : GMT 05:21:58
Arab Today, arab today

As they revealed the phenomenon

Coral bleaching hits 93% of Great Barrier Reef

Arab Today, arab today

Arab Today, arab today Coral bleaching hits 93% of Great Barrier Reef

A turtle swims over bleached coral at Heron Island on the Great Barrier Reef
Sydney - Arab Today

Australia's Great Barrier Reef is suffering its worst coral bleaching in recorded history with 93 percent of the World Heritage site affected, scientists said Wednesday, as they revealed the phenomenon is also hitting the other side of the country.

After extensive aerial and underwater surveys, researchers at James Cook University said only seven percent of the huge reef had escaped the whitening triggered by warmer water temperatures.

"We've never seen anything like this scale of bleaching before," said Terry Hughes, convenor of the National Coral Bleaching Taskforce.

The damage ranges from minor in the southern areas -- which are expected to recover soon -- to very severe in the northern and most pristine reaches of the 2,300 kilometre (1,430 miles) site off the east coast.

Hughes said of the 911 individual reefs surveyed, only 68 (or seven percent) had escaped the massive bleaching event which has also spread south to Sydney Harbour for the first time and across to the west.

Researcher Verena Schoepf, from the University of Western Australia, said coral was already dying at a site she had recently visited off the state's far north coast.

"Some of the sites that I work at had really very severe bleaching, up to 80 to 90 percent of the coral bleached," she told AFP. "So it's pretty bad out there."

- Severe throughout the Pacific -

Australia's Environment Minister Greg Hunt said it was "absolutely clear that there is a severe coral bleaching event occurring not just in the Great Barrier Reef but throughout many parts of the Pacific".

Hughes said the bleaching began in Hawaii late last year and had already affected several Pacific islands.

"Right now, New Caledonia, the Coral Sea, the northern half of the Barrier Reef and New South Wales are bleaching severely, and western Australia is quickly catching up," he told AFP.
Bleaching occurs when abnormal environmental conditions, such as warmer sea temperatures, cause corals to expel tiny photosynthetic algae, draining them of their colour.

Corals can recover if the water temperature drops and the algae are able to recolonise them, but scientists warned last year that the warming effects of a El Nino weather pattern could result in a mass global bleaching event.

Hughes said while bleaching had been linked to El Ninos, which generally occur every four to six years, "it wasn't until 1998 that one finally caused a bleaching event to happen" on the Great Barrier Reef.

"So the issue is global warming," Hughes told AFP, saying the link between water temperature and the severity of the bleaching was clear.

Hughes said the impact on the Great Barrier Reef would have been even worse had not a tropical cyclone which smashed into the Pacific island of Fiji in February brought rain and cooler weather to parts of Queensland.

"If you think about it, being rescued by the vagaries of a cyclone is a fairly precarious place to be," he added.

Andrew Baird, from James Cook University's centre for coral reef studies, said he had been surprised by the scale and severity of the event on the major tourist drawcard which is teeming with marine life.

"We've been expecting a really big event for a while I suppose and here it is," he told AFP.

Baird said because the bleaching was far less serious in the southern reaches "lots of the reef will still be in good shape".

"But the reef that's been badly affected -- which is a third to a half of it -- is going to take a while to recover," he told AFP.

"And again the big question is how many of these events can it handle? And I think the answer is not many more."
Source: AFP

arabstoday
arabstoday

Name *

E-mail *

Comment Title*

Comment *

: Characters Left

Mandatory *

Terms of use

Publishing Terms: Not to offend the author, or to persons or sanctities or attacking religions or divine self. And stay away from sectarian and racial incitement and insults.

I agree with the Terms of Use

Security Code*

coral bleaching hits 93 of great barrier reef coral bleaching hits 93 of great barrier reef

 



Name *

E-mail *

Comment Title*

Comment *

: Characters Left

Mandatory *

Terms of use

Publishing Terms: Not to offend the author, or to persons or sanctities or attacking religions or divine self. And stay away from sectarian and racial incitement and insults.

I agree with the Terms of Use

Security Code*

coral bleaching hits 93 of great barrier reef coral bleaching hits 93 of great barrier reef

 



Arab Today, arab today Modern colorful bedroom renovation

GMT 11:23 2017 Thursday ,21 December

Modern colorful bedroom renovation

GMT 12:28 2018 Saturday ,06 January

Bonobos prefer bullies over 'nice guys'

GMT 07:56 2018 Wednesday ,10 January

Ukrainian court arrests suspect over lawyer murder

GMT 21:31 2017 Monday ,28 August

Train traffic on Cairo-Alexandria line normal

GMT 10:05 2018 Friday ,19 January

Lebanon reverses ban on Spielberg's 'The Post'

GMT 23:21 2018 Monday ,08 January

PM dispels remours about any kind of NRO

GMT 21:25 2016 Tuesday ,06 September

Explosion rocks Kabul

GMT 16:41 2017 Monday ,16 January

Japan to supply new patrol boats to Vietnam
Arab Today, arab today
 
 Arab Today Facebook,arab today facebook  Arab Today Twitter,arab today twitter Arab Today Rss,arab today rss  Arab Today Youtube,arab today youtube  Arab Today Youtube,arab today youtube

Maintained and developed by Arabs Today Group SAL.
All rights reserved to Arab Today Media Group 2021 ©

Maintained and developed by Arabs Today Group SAL.
All rights reserved to Arab Today Media Group 2021 ©

arabstoday arabstoday arabstoday arabstoday
arabstoday arabstoday arabstoday
arabstoday
بناية النخيل - رأس النبع _ خلف السفارة الفرنسية _بيروت - لبنان
arabstoday, Arabstoday, Arabstoday