Hidden webs of fungi protect some forests from drought—but leave others vulnerable

The future of the world’s flora may depend as much, if not more, on what’s below the ground as what’s above. Beneath 90% of all plants lies an invisible support system—subterranean fungal partners that form a network of filaments connecting plants and bringing nutrients and water to their roots. In return, the plants provide a steady supply of carbon to the fungi. Now, researchers are learning that these hidden partners can shape how ecosystems respond to climate change.

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