Plum Island Ecosystems (IMAGE) U.S. National Science Foundation Caption Plum Island Ecosystems, PIE at right on the map, is one of 26 NSF Long-Term Ecological Research sites. Credit NSF LTER Network 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.