Recurrence of hypoxia (IMAGE) Michigan State University Caption This map shows hypoxia recurrence measured by the percentage of time with hypoxia detected during the summertime in 2014. Credit Michigan State University Center for Systems Integration and Sustainability. Usage Restrictions Credit must be given to the creator. Adaptations must be shared under the same terms. License CC BY-SA 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.