What's happened
Global mapping shows arbuscular mycorrhizal fungi link to plant roots and store hundreds of megatons of carbon, revealing their critical role in the Earth’s carbon cycle and the sensitivity of these underground networks to land use.
What's behind the headline?
Key questions to consider
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How do subterranean fungal networks alter our understanding of carbon sinks?
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What regional practices threaten or protect these networks?
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How might land use policy adapt to preserve below-ground carbon stores?
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This mapping suggests the networks are vast and globally important, with density higher in grasslands and sensitive to agriculture.
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Readers should consider the balance between farming needs and preserving natural carbon reservoirs.
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What happens next? Further validation across ecosystems and integration into climate models could shift carbon budgeting.
How we got here
A global consortium mapped mycorrhizal networks using literature reviews, soil sampling, and machine learning to estimate density and carbon storage. The work builds on known relationships between fungi and plant roots and highlights how agricultural practices may affect underground carbon storage.
Our analysis
Ars Technica reports the global mapping of mycorrhizal networks; The Guardian discusses tree growth versus photosynthesis; The New York Times notes carbon stored in fungal filaments; All Africa covers mangrove restoration and carbon credits.
Go deeper
- How might land-use changes impact underground carbon stores in your region?
- What policies could help protect fungal networks while supporting agriculture?
- Are forests or grasses the most critical ecosystems for preserving soil carbon?
More on these topics
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Toby Kiers - Biologist
Professor Toby Kiers' is an evolutionary biologist. She is a University Research Chair and Professor at VU University Amsterdam.
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Science - Academic journal of the American Association for the Advancement of Science
Science is the peer-reviewed academic journal of the American Association for the Advancement of Science (AAAS) and one of the world's top academic journals. It was first published in 1880, is currently circulated weekly and has a subscriber base of around 130,000. Because institutional subscriptions and online access serve a larger audience, its estimated readership is over 400,000 people. Science is based in the District of Columbia, United States, with a second office in Cambridge, England, United Kingdom.