Savanna Pines (Pinus elliottii var. densa) in Everglades National Park, Fla. (image) National Institute for Mathematical and Biological Synthesis (NIMBioS) Share Print E-Mail Caption Savanna trees such as these pines may help facilitate frequent fires in order to prevent other trees from displacing savanna trees and shifting the community from an open savanna to a closed forest. Credit Brian Beckage/UVM 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.