Brian Enquist, University of Arizona (IMAGE) University of Arizona Caption Brian Enquist of the University of Arizona is an expert on plant diversity and does much of his research in tropical ecosystems. Credit Benjamin Blonder Usage Restrictions Image may only be used for purposes of reporting and/or posting of this news release. Image credit must be stated as indicated. 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.