{"id":4350,"date":"2026-10-04T04:04:18","date_gmt":"2026-10-04T04:04:18","guid":{"rendered":"https:\/\/tahricteaches.com\/?p=4350"},"modified":"2026-10-04T09:04:05","modified_gmt":"2026-10-04T09:04:05","slug":"the-wood-wide-web-how-fungi-connect-the-forest","status":"publish","type":"post","link":"https:\/\/tahricteaches.com\/nl\/the-wood-wide-web-how-fungi-connect-the-forest\/","title":{"rendered":"The Wood Wide Web: How Fungi Connect the Forest"},"content":{"rendered":"

Beneath every forest floor, invisible to the naked eye, there is a network of extraordinary complexity. It connects trees to each other, carries nutrients across hundreds of meters, and allows a dying tree to send a final gift to its neighbors. Scientists call it the mycorrhizal network. Most of us call it the Wood Wide Web.<\/p>\n\n\n\n

To fully understand this hidden world, listen to the Radiolab episode that brought it to millions of people: From Tree to Shining Tree<\/strong><\/a> \u2014 a beautiful piece of science journalism that follows the researchers who uncovered these connections. It is free to listen to online and well worth the time.<\/p>\n\n\n\n

What Is a Mycorrhizal Network?<\/h2>\n\n\n\n

Fungi are not plants or animals \u2014 they belong to their own kingdom entirely. The parts of fungi we usually see, like mushrooms, are just the fruiting bodies \u2014 the equivalent of an apple on a tree. The bulk of the fungus lives underground as a vast web of thin threads called hyphae<\/strong>. Billions of these threads, bundled together, form mycelium<\/strong>.<\/p>\n\n\n\n

\"Cluster
Cluster of wild mushrooms growing on a mossy log, the visible fruiting bodies of a much larger underground fungus<\/figcaption><\/figure>\n\n\n\n\n

Mycelium is extraordinarily fine. A teaspoon of healthy forest soil can contain more than eight miles of fungal threads. These threads weave through soil, through dead wood, and most importantly \u2014 into the roots of living trees. The connection between tree roots and fungi is called mycorrhiza<\/strong>, from the Greek words for fungus and root.<\/p>\n\n\n\n

\"Fine
Fine fungal threads called hyphae growing through forest soil and tree roots, forming the mycorrhizal network<\/figcaption><\/figure>\n\n\n\n\n

The relationship is a trade. The tree produces sugar through photosynthesis \u2014 far more than it can use \u2014 and passes some of that sugar to the fungus through its roots. In return, the fungus dramatically extends the tree’s reach. Where tree roots might stretch a few meters, the fungal network can extend hundreds of meters in every direction, pulling in water, phosphorus, nitrogen, and other minerals that the tree cannot find on its own.<\/p>\n\n\n\n

Suzanne Simard and the Radioactive Trees<\/h2>\n\n\n\n

The scientist most responsible for bringing the Wood Wide Web to public attention is Suzanne Simard<\/strong>, a Canadian forest ecologist whose story begins in the old-growth forests of British Columbia. Simard grew up around loggers and spent her childhood watching the forests be cut and replanted. But when the replanted trees kept dying, she started asking questions nobody had asked before.<\/p>\n\n\n\n

In the 1990s, Simard designed an experiment that would change the science of forests forever. She took birch trees and Douglas firs growing together in a clearing, covered them with bags containing radioactive carbon dioxide, and waited. The trees breathed in the gas and used it to build sugars \u2014 tagged with a radioactive marker she could track.<\/p>\n\n\n\n

What she found astonished her. Carbon moved from the birch trees into the Douglas firs through the underground network. One Douglas fir she measured was connected \u2014 through the fungal web \u2014 to 47 other trees. It was not just connected to its own species. It was sharing carbon with birch, fir, and cedar across the entire clearing.<\/p>\n\n\n\n

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