Welcome to Polar Desert Photodegradation! The purpose of this site is to introduce you to the consideration of a particular impact of global change, the increase in Ultraviolet-B radiation as a result of ozone depletion (introduced below and described in more detail here). This increase may have profound effects on organisms and ecosystems; this site aims to get you more familiar with potential impacts, and provides an example of a particularly vulnerable ecosystem to explore the potential damage to ecosystems in that context.

As a result of Chloroflourocarbons (CFC’s) introduced to the Earth system by humans, chemicals have been released out into the atmosphere.  These chemicals, present as ions in other parts of the planet, are introduced in compounds and amounts that are not found as part of the earth’s natural biogeochemical cycling.  This is a concern because it disrupts the balance in biogeochemical cycling that allows life to exist, and for us – plants, humans, and other animals – to receive the necessary amounts of nutrients and environmental conditions that we are adapted to.

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