Artificial Streams (IMAGE) University of Michigan Caption This research facility contains 120 artificial streams, known as stream mesocosms, used in the study of biodiversity and water quality conducted by University of Michigan ecologist Bradley Cardinale. Credit Bradley Cardinale 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.