Return to Lichens and Ecosystems
Return to Lichen Biology and the Environment
Lobaria oregana, or "lettuce lichen", on Douglas-fir bark, Oregon Cascades. This lichen enriches soil in the old-growth coniferous forests of the Northwest because it containes nitrogen-fixing cyanobacteria and because it can attain a high biomass in its most favored forest stands. It comes back very slowly in re-growth forests after logging.
|Photograph copyright Stephen/Sylvia Sharnoff|