A brainless Greenpeace emission below. Give them their assumptions and they would be right. But all their assumptions are at best dubious.
For instance, bleaching is mostly caused by sea-level fluctuations: Low level episodes in particular. They make no effort to look at that, They just regurgitate conventional assumptions
And coral is very good at regrowing so bleaching from whatever cause is never permanent. Even Warmist Ove Hoegh Guldberg noted that rapid regrowth
After three mass bleaching events in the last five years, the Great Barrier Reef is not as great as it once was. Now, as Australia attempts to rebuild from the economic fallout of COVID-19, a new threat has emerged which could threaten the world’s largest living organism even further.
Scientists have made it clear that the blame for warmer and more acidic oceans lies on coal, the number one driver of climate change. But now that the Australian Federal government is pushing for a so-called “gas-led recovery” from the COVID-19 pandemic, the role of gas in the Reef’s demise can no longer go unscrutinised.
Rather than heeding the best advice of scientists and switching Australia from polluting coal and gas to clean energy sources like wind and solar, the Australian Federal Government is instead laying the groundwork to replace one destructive fossil fuel with another. If the government’s gas dreams become reality, the implications for the Reef could be cataclysmic.
In its 2019 Production Gap Report, the UN warned that in order to keep global heating at 1.5 degrees, gas production must decline by 20 percent by 2030.
“The continued rapid expansion of gas supplies and systems risks locking in a much higher gas trajectory than is consistent with a 1.5 degree Celsius or 2 degree Celsius future,” the report reads.
“These declines mean that most of the world’s proven fossil-fuel reserves must be left unburned.”
The Intergovernmental Panel on Climate Change (IPCC) special report on the impact of 1.5C of global warming found that coral reefs would likely decline between 70% and 90% if the temperature increased to that level. If global warming reaches 2C, more than 99% of coral reefs could be wiped out.
Climate change expert and researcher at the Australian National University, Professor Will Steffen, was unequivocal that gas has already damaged the Reef and expanding the industry would only make that damage worse.
“There is no doubt that climate change is the primary driver of the bleaching of the Great Barrier Reef,” Professor Steffen said.
“Climate change is caused by the burning of fossil fuels like gas, so there is a direct link between the greenhouse gas emissions from Australia’s gas industry, whether the gas is burned in Australia or elsewhere in the world, and the degradation and destruction of the Great Barrier Reef.”