In the Lafayette River, a sub-tributary of the lower Chesapeake Bay, one of the species of dinoflagellates responsible for HABs is Margalefidinium polykrikoides (formerly Cochlodinium polykrikoides). To determine which form nitrogen stimulates the growth of dinoflagellates, nutrient enrichment bioassays were conducted.

Ashley Rebecca Belknap, REU Intern, Old Dominion University of Earth, Ocean, and Atmospheric Sciences, Seaside, CA, United States and Margaret R Mulholland, Old Dominion University, Ocean, Earth and Atmospheric Sciences, Norfolk, VA, United States