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Society for the Protection of Underground Networks


One billion times the distance from the Earth to the sun: First global map of mycorrhizal fungi reveals true scale of underground networks across the planet

Researchers created the first global maps of arbuscular mycorrhizal fungi's distribution and mass, estimating ~110 quadrillion kilometers of network length and ~300 megatons of carbon. The networks support plant life and regulate climate by drawing in CO2 from atmosphere.

SourceSociety for the Protection of Underground Networks·JournalScience·TypeData/statistical analysis·DateJun 11, 2026

How an underground fungal map of the world’s oldest, slowest-growing rainforest trees can boost the resilience of Earth’s long-term carbon sinks

Scientists discovered that a single, 2,400-year-old alerce tree protects hundreds to thousands of underground fungal species. These fungi help forests function by funneling water and nutrients to trees and assisting plants in fighting stressors like drought and pathogens.

SourceSociety for the Protection of Underground Networks·JournalBiodiversity and Conservation·TypeData/statistical analysis·DateMar 3, 2026

Over 70% of global ecosystems remain unsampled for critical underground fungi

A recent study analyzed environmental DNA from the largest global dataset of arbuscular mycorrhizal fungal and found a striking gap: more than 70% of ecoregions lack sequencing data. This underrepresentation threatens biodiversity surveys, plant productivity, soil aggregation, and climate mitigation predictions.

SourceSociety for the Protection of Underground Networks·JournalFEMS Microbiology Letters·TypeData/statistical analysis·DateFeb 25, 2026