Biology

Jason Landrum: Ph.D. student

Jason is a sixth year Ph.D. student who graduated with a degree in Earth Sciences from Cornell University in 2001, and remained on campus for another year as a research technician in a low-temperature isotopic geochemistry laboratory. He matriculated into the School of Biology at Georgia Tech as a NSF IGERT fellow (Aquatic Chemical Signaling) in the Fall of 2002. Always intrigued by the oceans, Jason is interested in studying the role of biological processes in influencing global biogeochemical cycles. Specifically, Jason’s dissertation encompasses several aspects of the marine Nitrogen cycle, such as:
• using both bulk and compound-specific stable isotope approaches in order to determine isotopic changes in organic matter exposed to heterotrophic decomposition;
• tracing the flow of new N into higher trophic levels in coastal and oceanic food webs;
• determining the indirect effects of zooplankton on N-fixation rates in natural phytoplankton communities.