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The Department of Geosciences and Princeton University congratulates Dr. Dario Marconi on successfully defending his Ph.D. thesis: "Use of the Nitrate Isotopes in the Ocean Interior to Explore the Isotopic Composition of Sinking Nitrogen and its Implications for Marine Biogeochemical Cycles" on Thursday, May 18, 2017.
New evidence suggests that a nutrient that is both essential to life and an environmental scourge when present in large quantities is increasing in the open ocean, according to a new study published May 19 in the journal "Science." The increase of this nutrient, known as “fixed” nitrogen, was studied in coral. The findings give researchers new insight into ocean ecosystems.