Posted by Jeff on Apr 4, 2015 @ 5:14 am in Conservation | 0 comments | Last modified: April 3, 2015
Lichens are not what you think they are. Not plant, not fungus — they are one of a kind.
Lichen is something we commonly see growing on rocks or tree branches, on old wood fences and rotting stumps. But how often do you stop to really ponder lichens? Probably not often. And yet lichens are surprisingly fascinating … and weird … and beautiful!
Despite their looks, lichens aren’t plants. Nor are they in the fungus family. They’re a unique composite organism, the result of a symbiotic relationship of organisms from as many as three kingdoms, with the main partner being fungus.
They are also incredibly abundant, found everywhere from temperate forests to icy cold tundra, from the tropics to the deserts. They are the dominant vegetation on as much as 8 percent of the land on Earth, able to survive where many other plant species don’t stand a chance.
“They are pioneers on bare rock, desert sand, cleared soil, dead wood, animal bones, rusty metal, and living bark. Able to shut down metabolically during periods of unfavorable conditions, they can survive extremes of heat, cold, and drought.”
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