coral Archives - Disasters News

The Great Barrier Reef, a global icon of marine biodiversity, has suffered unprecedented coral loss, with Australian researchers reporting the highest mortality on record. Surveys conducted by the Australian Institute of Marine Science revealed up to 72% coral mortality across 12 reefs, driven by a summer of extreme weather, including mass bleaching, two cyclones, and flooding. Severe Decline in Northern Reefs In the reef's northern section, a third of hard coral perished the largest annual decline in 39 years of monitoring. Scientists fear similar devastation may have occurred in other parts of the 2,300-kilometer-long reef, known as the world's largest living structure. Mass bleaching occurs when rising sea temperatures force corals to expel the microscopic algae (zooxanthellae)...

A new study has revealed surprising variations in heat tolerance among coral colonies, offering new insights into their potential survival as global ocean temperatures rise. Even corals of the same species, living side by side, exhibit significantly different responses to heat stress, highlighting the complexity of coral resilience. The findings, published today, come as the world grapples with the impact of climate change on coral reefs. With the fourth global mass bleaching event recently declared and the Great Barrier Reef suffering five mass bleachings since 2016, these discoveries are crucial for future conservation efforts. Variable Heat Tolerance in Coral colonies The research focused on the tabular coral Acropora hyacinthus, a species highly vulnerable to heat waves but es...

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Great Barrier Reef Faces Record Coral Mortality Amid Bleaching Crisis

Research Uncovers Heat Tolerance Variability in Corals Offering Hope for Reef Survival