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The Great Barrier Reef Marine Park Authority considers the greatest threat to the Great Barrier Reef to be climate change, causing ocean warming which increases coral bleaching. [ 64 ] [ 65 ] Mass coral bleaching events due to marine heatwaves occurred in the summers of 1998, 2002, 2006, 2016, 2017 and 2020, [ 66 ] [ 13 ] [ 67 ] and coral ...
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.
Three-dimensional map of southern Florida showing the Florida Reef in red. The Florida Reef (also known as the Great Florida Reef, Florida reefs, Florida Reef Tract and Florida Keys Reef Tract) is the only living coral barrier reef in the continental United States. [1]
This contributes to the conditions which allow the Great Barrier Reef to thrive, keeping the east coast around 18 °C year round instead of dropping to 12 °C in the winter. [4] The current is very low in nutrients but remains important for the marine ecosystem. The EAC transfers heat from the tropics to the mid-latitude water and atmosphere. [5]
These temperatures have caused the most severe and widespread coral bleaching ever recorded in the Great Barrier reef. The most severe bleaching in 2016 occurred near Port Douglas. In late November 2016, surveys of 62 reefs showed that long term heat stress from climate change caused a 29% loss of shallow water coral.
The survey started in September 2012, and was focused on sections of the Great Barrier Reef across a range of depths. Specifically, 32 reefs were sampled, which equated to approximately 150 kilometres (93 mi) of reef. This produced around 105,000 images, which are currently being analysed by scientists globally, [2] using image recognition ...
The sea contains numerous islands and reefs, as well as the world's largest reef system, the Great Barrier Reef (GBR), which was declared a World Heritage Site by UNESCO in 1981. All previous oil exploration projects were terminated at the GBR in 1975, and fishing is restricted in many areas. The reefs and islands of the Coral Sea are ...
Bleached Staghorn coral in the Great Barrier Reef. While some mobile marine species can migrate in response to climate change, others such as corals find this much more difficult. A coral reef is an underwater ecosystem characterised by reef-building corals. Reefs are formed by colonies of coral polyps held together by calcium carbonate. [91]