Coral Reef

Great Barrier Reef Has Record Reef Coverage | Dr Peter Ridd

Published by Papa Giorgio

Dr Peter Ridd has been researching the Great Barrier Reef since 1984, has invented a range of advanced scientific instrumentation, and written over 100 scientific publications. He has lectured geophysical fluid dynamics, meteorology and oceanography since the 1990s.

THE AUSTRALIAN has more:

The Australian Institute of Marine Science officially has confirmed what we’ve known for a few weeks: this will be another bumper year for Great Barrier Reef coral cover.

AIMS states that two of the three major Great Barrier Reef regions have set new records for coral cover, and the cover in the third has equalled the existing record. When you add up the regional results to get the coral cover for the entire reef – something AIMS inexplicably stopped doing in 2016 – the Great Barrier Reef has more coral in each of the past three years than in any of the preceding 35 years.

This is despite the supposedly catastrophic bleaching in 2016, 2017, 2020, 2022 and this year killing huge amounts of coral.

What is even more remarkable is that the types of coral that have flourished – plate and staghorn coral – are the most susceptible to bleaching. But of course AIMS is still arguing these records do not mean the reef is healthy.

[….]

One therefore has to ask: what does the reef have to do to get the tick of approval? Australia has just won a record number of medals at the Olympics, which everyone seems to think is good. Why is the Great Barrier Reef always close to death no matter how many medals it wins?

The record coral coverage on the Great Barrier Reef across the past three years is not mentioned in the latest Scientific Consensus Statement, just released by CSIRO. Instead it focuses on claims the reef is badly affected by farmers and that climate change is a great threat. The summary of the statement (alone about 100 pages) acknowledges traditional owners, vilifies farmers and claims that freshwater ecosystems miraculously have become an integral part of the Great Barrier Reef. But somehow it could not find room to mention the reef has record coverage of coral. …

The Great Barrier Reef had more coral in the last 3 years, than in the last 35 years.

Global Warming Not a Cause of Coral Reef Degredation

Published by Papa Giorgio

This article comes by way of Sunshine Hours (h/t ~ Climate Depot):

…Then they get to the good stuff.

The results show that coral reefs surrounding remote islands were dramatically healthier than those in populated areas that were subject to a variety of human impacts.

“There are still coral reefs on this planet that are incredibly healthy and probably look the way they did 1,000 years ago,” said Jennifer Smith, lead author of the study and a professor at Scripps’s Center for Marine Biodiversity and Conservation.

Teeming with sharks, manta rays, jellyfish and sea turtles, these remote locations contrasted starkly with the heavily populated areas, which were encircled by coral reefs covered in murky seaweed and lacking much of the colorful algae that helps to cement a reef.

Duh!!!!!

It isn’t “global warming” damaging reefs. It is humans and their pollution and rich assholes boats scraping over the reefs!

(read it all)

This next excerpt comes from an old post, Coral Reefs are Not Endangered Due to Global Warming. The site has not been posted on since 2010, so I will import their whole post here (I will also reference the quote when I find the book on my shelf[s]):

When the 1998 El Niño raised the temperatures of the waters in the Pacific Ocean, it caused widespread ”bleaching” of coral reefs, which is shown to be a natural response to temperature changes of water in scientific studies. The resulting change in the appearance of corals around the world was enough for many to proclaim that the world’s corals were “dying off en mass” due to global warming, despite the fact that corals have lived through hundreds of relatively recent historical cycles of glacial periods interspersed with warm periods, as well as higher acid concentrations in the water and sea level rise of as much as 400 feet.

Note a 2001 United Nations press release falsely claiming that the 1998 El Nino caused a loss of 90% of the corals in some parts of the Indian Ocean:

”.. It includes new information on the impacts of global warming and coral bleaching, including the El Niño event in 1998 that caused the loss of 90 per cent of the corals in some parts of the Indian Ocean, representing 5% of the world’s reef area. Much of this damage passed almost unnoticed by the world’s policy-makers. Marine scientists point out that had such levels of damage occur in terrestrial environments they would have caused a major public outcry.”

Claims of Coral Dying due to ”Bleaching”

The Book ”Unstoppable Global Warming— Every 1,500 Years” explains numerous scientific studies showing that ”bleaching” coral is an entirely natural occurrence for adapting to temperature changes of the surrounding water— through the coral expelling the current algea associated with it in order to accumulate new strains of algea with are better suited for the newer temperature of water. Studies cited include ”The Acquisition of Exogenous Algal Symbionts by an Octocoral After Bleaching,” by Cynthia L. Lewis and Mary Alice Coffroth. Following is an excerpt from the book:

The claim that higher temperatures will kill off the world’s corals is irresistible to global warming activists. They understand the emotional appeal of the reefs and their bright-colored fishes. Greenpeace, perhaps predictably, has been quick to play this card:

”The Philippine coral reefs, among the most diverse and largest in the world, may not be around for long. … On the last day of the symposium [at Bali] the environmental group Greenpeace released a new coral reef study showing that, because of the global warming, the Pacific Ocean could lose most of its coral reefs by the end of the current century.” (385)

The only problem with the ”disappearing coral” theory is that it is false. Corals date back 450 million years, and most of today’s coral species date back at least 200 million years. Just in the last two million years, coral reefs have been through at least seventeen glacial periods, interspersed with their warm interglacial periods. These glacial-interglacial shifts imposed repeated dramatic temperature changes, along with sea level changes as drastic as four hundred feet.

Temperatures across the Pacific change sharply with the El Nino-Southern Oscillation (ENSO)-which causes a major Pacific temperature change every four to seven years. The 1998 El Nino boosted sea surface temperatures all over the Pacific, causing massive coral bleaching, especially in the Indian Ocean. That’s when Mark Spalding, supposedly a coral expert, claimed that the vast majority of the corals had died out. (386) Bleaching is a part of corals’ strategy for adapting to their almost-constant temperature changes. (387)

Ross J. Jones of Australia’s Queensland University reported coral bleaching on a portion of the Great Barrier Reef just after average daily sea temperatures rose by 2.5 degrees Celsius in eight days. (388) However, Canada’s D.R. Kobluk and M.A. Lysenko found severe coral bleaching in the Caribbean after the water temperature declined 3 degrees Celsius in eighteen hours. (389)

New studies tell us that bleaching is the coral system’s way of dealing with sudden temperature changes. Cynthia Lewis and Mary Alice Coffroth of the University of Buffalo deliberately triggered bleaching in some coral colonies. In response, the colonies ejected 99 percent of their symbiotic algae friends. The researchers then exposed the bleached coral to a rare variety of algae that wasn’t in the coral colonies at the beginning of the experiment. Sure enough, within a few weeks, the corals had substantially restocked their algae shelves, and about half included the new marker algae. Later, the marker variety was displaced from several of the coral colonies by more effective algae strains-indicating that corals pick the best partners for the new conditions from the wide variety of algae floating in their part of the ocean. (390)

Lewis and Coffroth say this is a healthy demonstration of flexibility in coral colonies. They say coral systems have the flexibility to establish new associations with algae strains from the whole environmental pool and that is ”a mechanism for resilience in the face of environmental change.” (391)

In the same June 2004 issue of Science, Angela Little of Australia’s Cook University and Madeline van Oppen of Australia’s Institute of Marine Science echoed the findings of Lewis and Coffroth. They attached titles to various parts of the Great Barrier Reef in Australia and studied the algae recruited by the juvenile corals that grew on them. They found that the young corals were likely to try any algae— ”a potentially adaptive trait.” (392)

Eco-activists and biologists who claim global warming is killing corals are wrong-again. Science has returned its verdict on corals and global warming: No Link.

(385) Report from the 9th International Coral Reef Conference, Bali, 23 June 2003.

(386) Samanta Sen, ”Disappearing Coral Reefs Also a Human Loss,” Interpress News Service, September 13, 2001.

(387) Jeff Hecht, ”Corals Adapt to Cope With Global Warming” NewScientist.com, August 11, 2004.

(388) R. J. Jones et al., ”Changes in Zooxanthellar Densities and Chlorophyll Concentrations in Corals During and After a Bleaching Event,” Marine Ecology Progress Series 158 (1997): 51-59.

(389) D. R. Kobluk and M.A. Lysenko, ”Ring Bleaching in Southern Caribbean Agaricia Agaricites During Rapid Water Cooling,” Bulletin of Marine Science 54 (1994): 142-50.

(390) C. L. Lewis and M.A. Coffroth, ”The Acquisition of Exogenous Algal Symbionts by an Octocoral After Bleaching,” Science 304 (2004): 1490-491.

(391) Ibid.

(392) A. F. Little et al., ”Flexibility in Algal Endosymbioses Shapes Growth in Reef Corals,” Science 305 (2004): 1492-94; Kobluk and Lysenko, ”Ring Bleaching in Southern Caribbean Agaricia Agaricites During Rapid Water Cooling,” 142-50.