Sky Islands (video) Smithsonian Tropical Research Institute Share Print E-Mail Loading video... Caption As temperature fluctuates, the area of unique paramo vegetation surrounding a mountain gradually shifts up and down. By using fossil pollen to track the paramos over a million years, researchers show that paramos today are threatened by rising temperatures. Credit Catalina Giraldo Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.