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Since 1990, calcification rates of Porites, a common large reef-building coral in the Great Barrier Reef, have decreased by 14.2% annually. [10] Aragonite levels across the Great Barrier Reef itself are not equal; due to currents and circulation, some portions of the Great Barrier Reef can have half as much aragonite as others. [17]
Covering nearly 133,000 square miles (345,000 square kilometers), the Great Barrier Reef is the world’s largest coral reef, home to more than 1,500 species of fish and 411 species of hard corals.
The Great Barrier Reef experienced its first major bleaching event in 1998. Since then, bleaching events have increased in frequency, with three events occurring in the years 2016–2020. [53] Bleaching is predicted to occur three times a decade on the Great Barrier Reef if warming is kept to 1.5 °C, increasing every other year to 2 °C. [54]
The Great Barrier Reef Marine Park Authority (GBRMPA), the agency tasked with monitoring the reef's health, confirmed that "a widespread, often called mass, coral bleaching event is unfolding ...
During that time, between 2016 and 2024, the Great Barrier Reef, the world’s largest coral reef ecosystem and one of the most biodiverse, suffered mass coral bleaching events.
It describes the organisms and ecosystems of Australia's Great Barrier Reef, and the biological, chemical and physical processes that influence them. Issues discussed include climate change, coral bleaching, coral disease and coral reef fishing. The book includes a field guide to help people identify the common animals and plants on the reef.
Higher water temperatures in 2016 have hurt much of the corals in the reef, and 67% of the reef's northern section died. Great Barrier Reef hit with worst coral bleaching on record Skip to main ...
A recently released report revealed a heartwrenching discovery about Australia's Great Barrier Reef. The researchers at the ARC Centre of Excellence for Coral Reef Studies found that at least 93 ...