Posts Tagged ‘Colorful Colorado’

I Like Lichen

May 6, 2015

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Lichens are a strange and wonderful life form. They are composite organisms made up from as many as three biological kingdoms; fungus, algae and bacteria. While they all need each other in this symbiotic triangle of life, the dominant partner is a fungus.

Lichens are fungi that have discovered agriculture- lichenologist Trevor Goward

The fungus benefits from this relationship because algae and cyanobacteria produce food by photosynthesis. The algae or cyanobacteria benefit by being protected from the environment by the filaments of the fungus, which also gather moisture and nutrients from the environment, and usually provide stability. This little arrangement works very well as lichens can be found in almost every habitat and geographic area on the planet. It is estimated that 6% of Earth’s land surface is covered by lichen. They are also considered the world’s oldest living organisms. Cooperation is a powerful survival tool and it accomplishes what evolution alone cannot provide in a single creature.

Lichens grow where other things can’t such as desert sand and bare rock. Their trick is to hibernate or shut down metabolically during extremes of heat, cold or drought. When they get wet conditions they reawake to capture solar energy and let their true colors shine. This is because moisture causes the lichen’s surface skin to become more transparent, exposing the colorful photosensitive partner (the photobiont) to light. This transition can happen within minutes. The next time you see some dried-up lichen, sprinkle it with water and watch it wake up.

It has been a soggy week here in Boulder, the cloudy wet conditions are getting to me and I need some color. This is perfect weather for our tiny lichens to come out of hibernation and make the rocks glow with color. Finding them is easy, just seek a place with rocks. Maybe the name appealed to my wishful thinking but I decided to head up Sunshine Canyon (40° 2’1.35″N, 105°18’56.63″W) to see what’s on the rocks. As you can see, the lichen was full of color on this grey and rainy day…

The Rocks Were Alive

The Rocks Were Alive and Photosynthesizing in Sunshine Canyon. Green Algae in the Forest.

This called for my close-up lens (60mm macro). Now everything is revealed in this miniature world…

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Lichen Abstract Art

The moss was pretty well soaked too…

Moss Droplets

I interrupted this Abert’s Squirrel’s lunch (this photo was taken with a 200mm zoom)…

Aberts Squirrel

Thanks to lichen It turned out to be a Colorful Colorado day despite the soggy weather.


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