Subject/Topic Wise Current Affairs for UPSC Exam | Physical Geography

Coral reefs

Thailand Corals Getting Destroyed

Thailand Corals Getting Destroyed According to recent reports, Thailand's enormous tracts of the ocean floor are being destroyed by a condition known as yellow band disease that is fast spreading. The reefs may be more susceptible to yellow-band disease as a result of overfishing, pollution, and rising water temperatures brought on by climate change. More on the news: The corals' colour changes to yellow just before they are killed. It was initially discovered decades ago, and the Caribbean reefs have suffered extensive damage as a result. The affected area of the sea is more than 600 acres. Corals that have…

28 January, 2023 Coral reefs

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Great Barrier Reef’s Recovery and Vulnerability

Great Barrier Reef’s Recovery and Vulnerability An annual long-term monitoring report on the Great Barrier Reef's recovery and susceptibility to climate threats was just made public by the Australian Institute of Marine Science (AIMS). In-water and airborne methods are used to survey the reefs. Key finding Background: The northern and central portions of Australia's Great Barrier Reef have the highest levels of coral cover recorded during the past 36 years (GBR). Warning: Due to the increase in global temperatures, coral bleaching might happen quickly. There was a significant coral bleaching incident on the reef in March 2022. The increase in…

09 August, 2022 Coral reefs

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Coral Reefs

Coral Reefs GS-Paper-1 Geography (PT-MAINS) A coral reef is an underwater ecosystem characterized by reef-building corals. Reefs are formed of colonies of coral polyps held together by calcium carbonate. Most coral reefs are built from stony corals, whose polyps cluster in groups. Coral belongs to the class Anthozoa in the animal phylum Cnidaria, which includes sea anemones and jellyfish. Unlike sea anemones, corals secrete hard carbonate exoskeletons that support and protect the coral. Most reefs grow best in warm, shallow, clear, sunny and agitated water. Sometimes called rainforests of the sea, shallow coral reefs form some of Earth's most diverse…

18 June, 2020 Coral reefs