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Geochemical constraints on the rates and fates of nitrogen fixation in the southwest Pacif — NSF Award to Texas A&M University (TX

The base of the marine food web consists of phytoplankton, or microscopic plants that need to be fertilized by the elements nitrogen (N), phosphorus (P), and iron (Fe), to grow and sustain global fisheries. The ultimate source of N to the ocean, and thus to marine phytoplankton, is provided by marine microbes that carr

Award titleGeochemical constraints on the rates and fates of nitrogen fixation in the southwest Pacif
Award ID2525151
AwardeeTexas A&M University
CityCOLLEGE STATION
StateTX
Amount obligated$498,457
Principal investigatorAngela Knapp
ProgramChemical Oceanography
Start date08/15/2025
AbstractThe base of the marine food web consists of phytoplankton, or microscopic plants that need to be fertilized by the elements nitrogen (N), phosphorus (P), and iron (Fe), to grow and sustain global fisheries. The ultimate source of N to the ocean, and thus to marine phytoplankton, is provided by marine microbes that carry out a process known as N fixation. While N is an essential component of phytoplankton biomass, we do not have good estimates of the locations, times, or magnitudes when N fixatio
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