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Tag Archives: intense ultraviolet radiation

One of the things I really like to do is play with shape and form in nature.

This struck me as being kinda cool snow melting into a tarn. Reflection too. What do you think??

Sun cups are formed by the sun radiation. Sometimes they provide great steps and on those early alpine mornings they freeze so you need crampons. If you look close you can see red algae in the snow its not blood from ski accidents but ….
… Red snow algae is a unicellular, photosynthetic plant which, in the spring, accumulates on the surface and within the upper 20 to 25 cm of old snow. It is concentrated in shallow depressions where its dark colour absorbs solar heat and further deepens the growing “sun cups.” Under a microscope each spherical cell is seen to be about 4 times the size of a human red blood cell. Their thick walls and bright red carotenoid pigment help protect delicate cells from intense ultraviolet radiation.

for more on red algae go here whistlernaturalists.ca are a great group with tonnes of info.

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