Portland, Oregon: Rocky Butte West wall... lichen
this wall was covered with beautiful formations...
looking it up, I learned amazing facts about lichens..
excerpt from the following link:
"One of the ways lichens directly benefit humans is through their ability to absorb everything in their atmosphere, especially pollutants. Lichens can provide us with valuable information about the environment around us. Any heavy metals or carbon or sulfur or other pollutants in the atmosphere are absorbed into the lichen thallus. Scientists can extract these toxins and determine the levels that are present in our atmosphere. The United States Forest Service National Lichens & Air Quality Database and Clearinghouse provides more information about lichen biomonitoring and how it is helping federal land managers meet federal and agency responsibilities to detect, map, evaluate trends, and assess the ecological impacts of air pollutants. "
www.fs.fed.us/wildflowers/beauty/lichens/about.shtml
please see large :)
Portland, Oregon: Rocky Butte West wall... lichen
this wall was covered with beautiful formations...
looking it up, I learned amazing facts about lichens..
excerpt from the following link:
"One of the ways lichens directly benefit humans is through their ability to absorb everything in their atmosphere, especially pollutants. Lichens can provide us with valuable information about the environment around us. Any heavy metals or carbon or sulfur or other pollutants in the atmosphere are absorbed into the lichen thallus. Scientists can extract these toxins and determine the levels that are present in our atmosphere. The United States Forest Service National Lichens & Air Quality Database and Clearinghouse provides more information about lichen biomonitoring and how it is helping federal land managers meet federal and agency responsibilities to detect, map, evaluate trends, and assess the ecological impacts of air pollutants. "
www.fs.fed.us/wildflowers/beauty/lichens/about.shtml
please see large :)