How Trees Communicate Underground
When we think about communication, trees are probably not the first things that come to mind. After all, trees don't talk, text, email, or make phone calls.
Yet scientists have discovered that forests are far more connected than they appear. Beneath the ground, trees are constantly sharing information and resources through an extraordinary underground
network.
Some researchers have even nicknamed it the "Wood Wide Web."
The system depends on fungi that live in the soil. These fungi form thin,
thread-like structures that connect with tree roots. In many forests, the roots of multiple trees become linked through these fungal networks, creating pathways that allow materials and signals to travel underground.
Through these connections, trees can share water, nutrients, and chemical messages. For example, when a
tree is attacked by insects, it may release chemical signals through the network. Nearby trees can receive these signals and begin producing defensive chemicals before the insects reach them.
Scientists have also found evidence that larger, older trees sometimes transfer nutrients to younger seedlings growing nearby. This
support can help young trees survive in shady conditions where resources are limited.
The underground network benefits the fungi as well. Trees produce sugars through photosynthesis and share some of those sugars with the fungi. In return, the fungi help trees absorb water and nutrients from the soil. It's a partnership
that has existed for millions of years.
Researchers are still learning exactly how these underground systems work, and there is ongoing debate about some of the details. But one thing is clear: forests are not simply collections of individual trees standing alone. Instead, they function more like communities, with
connections and relationships hidden beneath the surface.
What appears to be a group of separate trees may actually be part of a vast underground network working together in ways we're only beginning to understand.
By the way, if you want to read a fascinating book, try The Hidden Life of
Trees. I found it very educational and enjoyable!
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Here's what just one GON reader had to
say...
"Dear Maria,
In your May 11 newsletter, you encouraged
us to update our packing list. My list started over 30 years ago with 3 girls traveling for family visits, camping trips and school excursions and me occasionally traveling for business. I was honored when my high school granddaughter asked for a copy of my list just three years ago to prepare for a weeklong school competition hundreds of miles away. As I’m traveling tomorrow, I dug my tattered list from the suitcase where it resides. It has items added in two colors of ink and the paper is so worn it’s limp.
I have now added the written items to the list and have updated several items that have changed
over the years. The newly printed list is on my dresser for packing tonight!
Thanks for keeping us thinking about the small things too."
-- Karen Tarpley, Richmond, TX
