GeneralSource: The Hindu
Resilient Coral Reefs: A Positive Development Amid Climate Change
Thursday, 18 June 2026
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Recent studies have highlighted the resilience of coral reefs off Kenya's coast, showcasing their ability to withstand climate change. This finding is crucial for UPSC aspirants, particularly for General Studies Paper 3, which covers environmental issues. Last Updated: 18-06-2026
Key Facts About Climate-Resilient Coral Reefs
- Around 166,000 square kilometers of global coral reefs are relatively climate-resilient.
- These reefs challenge the IPCC projections of 70–90% coral loss at 1.5°C warming.
- Local conservation in Kenya includes regulated fishing and mangrove planting.
- Reefs survive due to naturally cooler microclimates and genetic adaptation.
- Advanced mapping techniques have identified more resilient reefs in Australia, Indonesia, the Philippines, Cuba, and the Bahamas.
- Community efforts and technological advancements are key to reef protection.
India's Environmental Conservation Efforts
The resilience of coral reefs is significant for India's environmental and biodiversity goals. Coral reefs contribute to marine biodiversity, protect coastlines, and support fisheries, aligning with India's strategic environmental objectives. Globally, coral reefs support 25% of marine biodiversity, making their conservation a priority.
UPSC Relevance
- GS Paper 3: Environmental conservation, climate change, and biodiversity.
- Prelims: Questions on coral bleaching, climate-resilient reefs, and global conservation initiatives.
- Mains: Essays on environmental sustainability and the impact of climate change on marine ecosystems.
FAQ Section
- What are coral reefs? Marine ecosystems formed by coral polyps that support high biodiversity in shallow tropical waters.
- What is coral bleaching? Loss of symbiotic algae due to heat stress, causing corals to turn white and weaken.
- What are climate-resilient reefs? Reefs that can survive or recover faster from ocean warming due to adaptation or favorable conditions.
- Why are coral reefs important? They support 25% of marine biodiversity, protect coastlines, and bolster fisheries and tourism.
Detailed Coverage
- 166,000 square kilometers of coral reefs are climate-resilient.
- Challenges IPCC projections of 70–90% coral loss at 1.5°C warming.
- More optimistic scenario for coral survival if protected effectively.
- Local conservation efforts in Kenya play a crucial role.
- Reefs endure due to cool ocean microclimates and genetic adaptations.
- Advanced mapping shows three times more climate-resilient reefs.
- Coral bleaching occurs when corals lose their symbiotic algae.
- Primary cause of bleaching is increased ocean temperature.
- Corals become vulnerable to disease after bleaching.
- Temporary stress allows for potential recovery of corals.
- Significant bleaching events have occurred, damaging ecosystems.
- 14% of coral reefs lost between 2009 and 2018 due to bleaching.
- Global initiatives aim to protect coral reefs.
- India has specific initiatives like the Coral Bleaching Alert System.
- Coral reefs support 25% of marine biodiversity.
- Blue Parks are recognized marine protected areas for conservation.
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