March Madness
by Linda Martinson Blue Ridge Naturalist
March has been on the chilly side with lots and lots of rain but thankfully, not much snow. During the hushed and rain-soaked months of January and February and into early March, I spent several walks watching for intriguing lichens. Lichens aren’t at all bothered by cold weather, and they love rainy weather during which they break dormancy and absorb 3 to 35 times their weight in water. In the winter, there is more available light for lichens and when you see them standing out clearly against the trees, they are busy photosynthesizing the light while they can absorb water from the air. Ponder the lichens; they are neither plant nor animal, but instead a unique mutualistic symbiosis of at least two different kinds of fungi, algae and bacteria. Together they form rather than grow, and they can go where none of the composite organisms could go alone. (See my February 2015 Nature Notes for more information about lichens although it may be outdated, because scientific discoveries about the 20,000+ species of lichens are being made all the time!)
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