Ecosystem with 60 Plant Species (IMAGE) Technical University of Munich (TUM) Caption Ecosystems with 60 plant species contained, on average, twice the amount of standing biomass in comparison to plant monocultures. Credit Alexandra Weigelt Usage Restrictions Free for use in reporting on TUM, with the copyright noted. 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.