Last Update: 04/05/2026 at 2:50 PM EST
Reefs Slow Earth Climate Recovery
Coverage from The Brighter Side of News, The Invading Sea, and others
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Latest Article
01/31
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62
Executive Summary
Ancient reef growth and collapse changed how fast Earth recovered from carbon spikes by shifting carbonate burial and ocean buffering
- Researchers traced 250 million years of reef and plankton driven carbonate burial changes
- Extensive shallow reefs trapped carbonate near shore and weakened deep ocean chemical exchange
- That state slowed the biological pump and delayed recovery after major CO2 injections
- When reefs shrank, carbonate burial shifted deeper and ocean alkalinity increased
- Higher alkalinity strengthened carbon drawdown and sped climate recovery in deep time
- Plankton expanded when shallow reefs declined, boosting deep ocean carbon storage
- Modern reef loss and acidifying oceans could disrupt these natural carbon regulation pathways
Quick Facts
- What: Showed reefs controlled long term carbon cycle recovery
- Where: Global oceans across shallow shelves and deep sea
- Why: Reef shifts altered carbonate burial, alkalinity, and carbon drawdown
- Who: University of Sydney and Universite Grenoble Alpes researchers
- When: Over more than 250 million years
Coverage Timeline: 62 Days
Featured Article
Researchers from University of Sydney and Universite Grenoble Alpes publish in 2025 in PNAS that coral reefs regulate carbon cycling and climate recovery.
Additional Articles
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Scientists from the University of Sydney and Universite Grenoble Alpes reported in PNAS that coral reefs have regulated Earth's carbon-cycle recovery over 250 million years.
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A PNAS study uses deep-time climate modeling to show how long-term coral reef cycles regulate ocean alkalinity and carbon dioxide recovery globally.
Researchers reveal reefs controlled climate recovery by shifting carbonate burial between shallow and deep oceans over hundreds of millions of years.