Australia downgrade Great Barrier Reef to ‘very poor’ status

GS-III: Australia downgrade the Great Barrier Reef to ‘very poor’ status

News

Australia’s Great Barrier Reef is in very poor condition because of climate change.

What is Coral Bleaching?

Bleaching occurs when abnormal environmental conditions, such as warmer sea temperatures, cause corals to expel tiny photosynthetic algae, draining them of their colour. Corals can recover if the water temperature drops and the algae are able to recolonise them.

About the Great barrier reef:

The Great Barrier Reef is the world’s largest coral reef system composed of over 2,900 individual reefs and 900 islands stretching for over 2,300 kilometres over an area of approximately 344,400 square kilometres. The reef is located in the Coral Sea, off the coast of Queensland, Australia.
The Great Barrier Reef can be seen from outer space and is the world’s biggest single structure made by living organisms. This reef structure is composed of and built by billions of tiny organisms, known as coral polyps. It was selected as a World Heritage Site in 1981.

Why Great Barrier Reef Graded?

Global warming is destroying the Great Barrier Reef’s ability to recover from disasters and reducing its biodiversity by changing the species that live there. The decline is bad news for the reef’s long-term future. It is also changing the mix of coral species that replenish the reef, which will reduce the number of suitable habitats for marine life. For the first time, the recruitment of a group of weedy corals, known as brooding pocilloporids, outstripped spawning acroporids, a type of coral that is vital for giving a reef the three-dimensional complexity that many animals rely on. Losing some of that three-dimensionality means a loss of biodiversity, in coral species and other marine life.

Conclusion

The Great Barrier Reef can be seen from outer space and is the world’s biggest single structure made by living organisms. This reef structure is composed of and built by billions of tiny organisms, known as coral polyps. It was selected as a World Heritage Site in 1981.

Source: Indian Express

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