Changes in Plankton Communities (IMAGE) University of Plymouth Caption Many Northeast Atlantic holoplankton taxa have decreased in abundance during the past 60 years. In this image, triangles represent coastal stations while grid squares illustrate trends in Continuous Plankton Recorder data. Blue indicates a decreasing abundance trend; orange indicates an increase Credit University of Plymouth 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.