Papers
2
Total Citations
103
H-Index
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About
Julie Robidart is a marine microbial ecologist whose research focuses on the biogeochemical drivers of nitrogen fixation in the world’s oceans. Her work is particularly centered on the oligotrophic North Pacific Subtropical Gyre, where she investigates the keystone role of diazotrophs—microorganisms that convert atmospheric dinitrogen into bioavailable nitrogen, fueling new production in nutrient-poor waters. Robidart’s major contributions include the development and field application of an ecogenomic sensor, which provides real-time, in situ molecular data on microbial communities. This innovative tool, detailed in her most-cited paper (79 citations), revealed the environmental controls on N2-fixing microorganisms, bridging the gap between genomic potential and actual biogeochemical activity. She also advanced methodological approaches by designing a free-drifting submersible incubation device (24 citations), enabling more accurate, high-resolution rate measurements of nitrogen fixation. Through these efforts, Robidart has significantly improved our ability to map microbial distributions and quantify their ecosystem impacts. Her work is essential for understanding how marine microbes regulate global nutrient cycles and respond to a changing ocean.
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