I read Merlin Sheldrake’s Entangled Life as a followup to The Hidden Life of Trees. I wanted to get deeper into the fungal side of the forest’s story. However, mycorrhizal relationships are just a small part of what this book explores.
For me the wildest parts of this story had to do with the ability of fungi to process information and react appropriately. They appear to be more actively engaged in the world than plants, and in some ways almost resemble animals. This study published in Nature in 2019 found that fungi had a sense of direction and some kind of memory. The researchers put a small block of wood inoculated with a fungus into an environment where it could grow and explore and eventually discover another block of wood. Then they’d remove the original block of wood and put it in a new environment, and they found that the mycelium would continue preferentially growing and exploring in the direction that had led to the “bait” before!
After reading Metazoa I wanted to explore a different branch of our phylogenetic tree, and so picked up The Hidden Life of Trees. It’s a bunch of short anecdotes about the ecology of European beech forests, which is an awfully niche thing to write a book about. But then it did make the NY Times bestseller list in 2016.
I knew that this book probably wasn’t written for me, but the material is definitely cool, and I wanted to compare its style with Metazoa. Both books are trying to communicate a collection of scientific findings that border on the mystical. What makes a mind? How do ancient trees communicate through a living internet? And they both end up anthropomorphizing their very non-human subjects. Peter Godfrey-Smith makes it very clear up front that he’s a materialist. Wohlleben is much harder to pin down. I was never able to tell if he literally believes the things he’s saying, or if it’s a literary device. Normally this would get some eyerolls from me, but like I said, I don’t think I’m the intended audience. Clearly the book connected with a huge audience and successfully diffused these ideas into public consciousness.
Forests are much more communicative and cooperative communities than we’d previously thought, filled with an almost social drama playing out over centuries instead of decades. Different species share both information and materials, sometimes with kin, sometimes more generally. The fungi link together different individual organisms, and extract minerals as well. Mother trees sustain their offspring in the darkness below the canopy, so they are ready to leap toward the light when the time comes. Fire clears out the underbrush and makes minerals easily available, triggering the release of seeds. Forests migrate south en masse as the glaciers advance, but some species can get trapped, unable to climb over the Alps, and are wiped out locally. It’s a seething, adaptive civilization that you can only see through time lapse eyes.