(IMAGE) Yokohama National University Caption (A) Map of the study sites and aridity index. The level of aridity index across sites ranged from 0.03 (hyper–arid) to 0.58 (dry-subhumid). (B) Nonlinear response of temporal community stability to aridity index. The temporal community stability decreased more rapidly in more arid areas compared to less arid areas. Credit Yokohama National University Usage Restrictions News organizations may use or redistribute this image, with proper attribution, as part of news coverage of this paper only. License Original 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.