Bacteria ecosystems (IMAGE) Massachusetts Institute of Technology Caption MIT researchers studied ecosystems of up to 48 species of bacteria and discovered how the communities shift from stable to unstable states. Credit William Lopes, Gore Lab Usage Restrictions Credit must be given to the creator. No derivatives or adaptations of the work are permitted. License CC BY-ND 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.