The Alpine-Treeline Warming Experiment was installed in 2008-2009 on Niwot Ridge above Boulder, Colorado. It uses infrared heaters to warm soil and plant surfaces by an amount comparable to current average projections of climate warming in the year 2100. Alpine and subalpine ecosystems are islands of biodiversity isolated from each other by surrounding lower elevation areas. The species in these ecosystems may be particularly vulnerable to a warming climate given their isolation and adaptations to very cold conditions and short growing seasons.
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