Junyao Gu: First-year PhD student in the Johnson research group. I am interested in using a variety of approaches including computational, DNA, qPCR and bioinformatics tools to investigate the diversity and dynamics of microbial communities, focusing on Prochlorococcus and their role in the ocean environment, the relationship among them and biogeochemical cycles, climate change, health risks, and help formulate environmental policies that protect human and ecosystem health. My research interests involve exploring the ocean biogeochemical cycles (carbon and nitrogen) as well as environmental justice.Zackary Johnson – PI: Associate Professor Dr. Zackary Johnson’s research group studies the abundance, diversity and activity of marine microbes, focusing on Prochlorococcus, the most abundant phytoplankton in the open ocean. Our group also leads MAGIC (Marine AlGae Industrialization Consortium) that is developing microalgae as an economical and reduced carbon source of biofuel, feeds and other products. Dr. Johnson’s CV.