Nitrogen Sampling (IMAGE) Virginia Institute of Marine Science Caption Associate professor BK Song of the Virginia Institute of Marine Science collects water samples for analysis of nitrogen and microbes. Credit © D. Malmquist/VIMS. Usage Restrictions One-time use only. 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.