Mesocosms (IMAGE) Dartmouth College Caption Controlled outdoor environments known as “mesocosms” were used to study climate change impacts on nutrition and toxicity on the aquatic food web. Credit Photo credit: Pianpian Wu Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted. License CC BY-NC-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.