First global map reveals vast underground network of arbuscular mycorrhizal (AM) fungi
A new study published in Science has unveiled the first global map of the Earth's vast underground network of arbuscular mycorrhizal (AM) fungi. This network, crucial for plant life for millions of years, spans an estimated 110 quadrillion km and weighs around 300 million tonnes of carbon. Forming symbiotic relationships with 70% of plant species, AM fungi sequester approximately 4 billion tonnes of CO2-equivalent annually, about 11% of human-related carbon emissions. The study also identified biodiversity hotspots, such as grasslands in South Sudan, the Tibetan plateau, and India's Banni grasslands, which house 40% of the world's AM fungal networks. However, these vital ecosystems are at extreme risk due to conversion to croplands, which significantly reduces fungal density.
Key Points
- The first global map of arbuscular mycorrhizal (AM) fungi reveals a vast underground network crucial for plant life.
- This network spans 110 quadrillion km and sequesters about 300 million tonnes of carbon.
- AM fungi form symbiotic relationships with 70% of plant species, sequestering 4 billion tonnes of CO2-equivalent annually.
- Biodiversity hotspots for AM fungi include grasslands in South Sudan, the Tibetan plateau, and India's Banni grasslands.
- These vital ecosystems are at risk due to conversion to croplands, which reduces fungal density.
Exam Facts
- Study published in: Science journal.
- AM fungi network spans: 110 quadrillion km.
- Carbon sequestered by AM fungi: 4 billion tonnes of CO2-equivalent annually (11% of human-related emissions).
- Key hotspots: South Sudan, Tibetan plateau, India's Banni grasslands.
Read it. Retain it. Recall it.
Get spaced-repetition flashcards, daily quizzes and offline access — free on Android.