Short Distance, Large Difference (image) Brown University Caption Out in Rhode Island sound, the anammox process is a mainstay of the natural cycle that returns sedimentary nitrogen to the atmosphere. In Narragansett Bay, anammox is almost completely absent. Why? Credit Mike Cohea/Brown University Usage Restrictions with credit 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.