Ants at Manu Park (IMAGE) University of California - San Diego Caption At Manu Park in Peru, ants are seen fiercely protecting a young Cecropia tree. Such mutually beneficial interactions are an essential part of ecosystem diversity. Credit Christopher Wills, UC San Diego Usage Restrictions Must be used in conjunction with PLOS Computational Biology paper on diversity and ecosystem health. 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.