Distribution Map (IMAGE) Princeton University Caption The mutual stability of savannas and forests is most at risk in tropical Africa and South America, the researchers report. The map illustrates areas that are dry and dominated by savanna (light orange); support both biomes but are primarily savanna (orange); support both habitats but are primarily forest (light green); and high-rainfall regions that are heavily forested (dark green). Credit Science/AAAS Usage Restrictions None License Licensed content 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.