US scientists at the National Oceanic and Atmospheric Administration (NOAA) believe Australia's Great Barrier Reef is on the verge of yet another mass bleaching event (
https://www.theguardian.com/environment/2022/jan/29/great-barrier-reef-on-verge-of-another-mass-bleaching-after-highest-temperatures-on-record). Coral bleaching occurs when temperatures are raised to a level, causing the coral organism to lose its algal symbionts. The NOAA scientists note, from their satellite surveys, that December temperatures over the Great Barrier Reef are the highest ever recorded. Mass bleaching seems inevitable. The Australian government have announced that they will spend $1bn on reef conservation, over the next 9 years, if they are re-elected. This sounds a big number but might be inadequate for a structure over 2300 k long with an area of circa 345,000 square kilometres. Global Heating is clearly the factor most endangering this UNESCO World Heritage Site. Changing Australia's emissions policies would be much more effective and reliable. The Australian government seems, however, to be hooked on coal, gas and jobs.
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