The 'wood wide web' is real, but weaker than popular science claims
Mycorrhizal Networks
The next time you hear that trees in a forest are 'talking' or 'sharing' through their roots, know that scientists are now split on how much of that is proven versus popular oversimplification.
Since the 1990s, popular science has told us that trees in a forest are connected by fungal networks underground and use them to share sugar, water, and warning signals, sometimes called the 'wood wide web.' That basic wiring is real: most land plants partner with root fungi, and those fungal threads can link many plants together. But in 2023, several research teams published sharp critiques arguing that some of the most famous studies overstated how much trees actually cooperate through this network, so the full story is more contested than the popular version suggests.
Key Findings
Mycorrhizal fungi partner with an estimated 70-90% of land plant species, and fungal networks can extend from meters to hectares, physically linking many plants.
Carbon transfer between plants connected by shared fungal networks has been documented since 1969 in lab studies and since 1997 in field studies, plus evidence of nitrogen and phosphorus movement.
In 2023, multiple research groups published methodological critiques of 'wood wide web' literature, citing positive citation bias and overinterpretation; a 2024 rebuttal defended the original findings but acknowledged the debate remains unresolved.
chevron_right Technical Summary
The idea that forests share resources through an underground 'wood wide web' of fungal networks is partly true but increasingly debated, with 2023 critiques accusing some influential studies of overstating how much trees actually help each other. Meanwhile, plants also send electrical signals through their tissues in ways that echo (but don't fully match) how nerves work in animals.
Abstract Preview
Original paper
Psinapsis verde
Introducción: del bosque al “internet vegetal” [🟢 ESTABLECIDO] Las raíces de la mayoría de las plantas terrestres están colonizadas por hongos micorrícicos, una simbiosis que se remonta a más de 40...
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