Margaret Ruth Mulholland is professor at Old Dominion University known for her work on nutrients in marine and estuarine environments.
[1] In 1998 she earned her Ph.D. in biological oceanography from the University of Maryland.
[1] Mulholland's early research examined the oxidation of amino acids[3] and nitrogen cycling by the marine bacterium Trichodesmium.
[4][5] Her subsequent work investigated nitrogen cycling in harmful algae including Aureococcus[6][7] and Karenia brevis.
[8] She has examined how phytoplankton will respond to an ocean enriched in carbon dioxide,[9] the impact of climate change on the Chesapeake Bay,[10] and the contribution of nitrogen-fixing organisms to nutrient cycling.