The Van Eck Forest in northwestern California is home to iconic coast redwood trees, which store more above-ground carbon per acre than any other forest type. The oldest trees can grow to heights of more than 90 meters (300 feet) and may be more than 2,000 years old. But due to the region’s extensive logging, which reduced old-growth redwood forests to just 5% of their original extent, very few large, old redwood trees (Sequoia sempervirens) exist today. Consequently, there are also fewer fern mats high up in the forest canopy: large masses of leather-leaf ferns (Polypodium scouleri), a keystone species that stores water, mitigates forest temperatures and provides habitat for animals. To help restore these historic forests, a conservation nonprofit and a university are experimenting with ways to transplant the mats back into redwood treetops. In a collaboration that began in 2021, the Pacific Forest Trust and scientists from California State Polytechnic University, Humboldt, are taking fern mats that have fallen from old-growth trees and replanting them in younger trees to restore the canopy layer. As they grow over decades and centuries, these mats collect decomposing plant matter and germinate seeds, creating swaths of arboreal gardens that are home to salamanders, insects, birds and rare lichens. “It’s like having a little garden up there,” said Laurie Wayburn, co-founder and president of the Pacific Forest Trust. A great horned owl, a common redwood forest resident. Image by B. Washburn via Wikimedia Commons (CC BY 2.0). ‘Putting back the pieces’ In nature,…This article was originally published on Mongabay

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