Gretchen Daily and Hua Zhen (IMAGE) Stanford University Caption Gretchen Daily and lead author Hua Zheng conduct research on a Hainan conventional plantation. Credit Zhiyun Ouyang 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.