Nitrogene Deficiency (IMAGE) Advanced Science Research Center, GC/CUNY Caption Changes in the nitrogen cycle can be detected by monitoring ecosystem nitrogen inputs, internal soil nitrogen cycling, plant nitrogen status and nitrogen losses. Credit Rachel Mason Usage Restrictions For use only in conjunction with this paper. License Original 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.