Linda Deegan, MBL, at Plum Island Estuary, Massachusetts (image) Marine Biological Laboratory Share Print E-Mail Caption Linda Deegan, senior scientist in the MBL's Ecosystems Center, shows an assistant how to sample water to test for nutrients from a salt marsh creek at Plum Island Estuary, Massachusetts. Credit Christopher Neill/MBL Usage Restrictions Please use with proper credit. Share Print E-Mail 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.