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Massive 40-50 Percent Great Barrier Reef Coral Losses

Massive 40-50 Percent Great Barrier Reef Coral Losses


Alex Wierbinski's picture

By Alex Wierbinski - Posted on 31 October 2019

 

OCEANS AND CORAL

Measuring Massive Reef Destruction
Great Barrier Reef turning to algae.David Wachenfeld, Triggerfish Images.
Repeated disturbances from climate change and deteriorating water have changed some reefs from coral to algae. David Wachenfeld, Triggerfish Images.

 

Massive 40-50 Percent Great Barrier Reef Losses

Great Barrier Reef Island Coral Decline,
ARC Centre of Excellence for Coral Reef Studies, October 27, 2019.

MAIN POINTS

40-50% GBR Coral Declines
"A long-term study of coral cover on island groups of the Great Barrier Reef has found declines of between 40 and 50 percent of live, hard corals at inshore island groups during the past few decades."

"...the data was so alarming that they checked and re-checked it."

Locations
"...researchers surveyed coral cover on fringing reefs of the Palm, Magnetic, Whitsunday and Keppel Island groups along the central and southern Great Barrier Reef, and compared it to historical records."

Time Frame
"...researchers have monitored the condition and trends of inshore reefs in the Great Barrier Reef Marine Park (GBRMP) since the late 1990s."

Key Factors of Decline
"...two key drivers consistently stood out for all reefs: temperature stress from marine heatwaves and wave exposure."

“There was a clear threshold of heat stress above which coral cover consistently declined. We were surprised to find that corals on these inshore reefs appear to have a lower heat stress threshold than previously reported.”

 

Recent Coral Research Review

 

Oct 2019
Inevitable Southern Ocean Acidification Tipping Point Approaches

 

Aug 2018
Lobotomizing the Web of Life: Coral Escape Limits

 

Aug 2018
OCEANS, CHEMISTRY, & CLIMATE: Cooking Up a Toxic Brew

 

April 2018
Ocean Life: Hope for Great Barrier Reef, Remnants to Survive a Hundred Years?

 

April 2018
Anthropocene, Climate Change News, 2018: Warming Times, Coral on the Way Out

 

Nov 2017
Can corals survive climate change?

 

Oct 2017
Saying Goodbye: Coral

 

In the meantime, ocean and atmospheric temperatures are steadily increasing...

 

More from the ARC

Video: Tracking Antarctic Currents

Antarctic bottom water & El Nino flow videos

 

 

Science as Art, Nature as Beauty
National Computational Infrastructure Austrailia,
Fantastic Supercomputer Simulations of Nature's Beauties,
YouTube Channel.

 

 

 

Fish-Ice-Oceans-Water

News of Man & Nature, October 2019

 

 

 

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Great Barrier Reef, coral, ocean, research, ARC Centre, massive, losses, climate change

 

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