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Sulfur Isotope Variability Of Oceanic Dmsp Generation And Its Contributions To Marine Biogenic Sulfur Emissions, Kathryn L. Van Alstyne Dr., Harry Oduro, James Farquhar
Sulfur Isotope Variability Of Oceanic Dmsp Generation And Its Contributions To Marine Biogenic Sulfur Emissions, Kathryn L. Van Alstyne Dr., Harry Oduro, James Farquhar
Shannon Point Marine Center Faculty Publications
Oceanic dimethylsulfoniopropionate (DMSP) is the precursor to dimethylsulfide (DMS), which plays a role in climate regulation through transformation to methanesulfonic acid (MSA) and nonseasalt sulfate (NSS-SO4 2−) aerosols. Here, we report measurements of the abundance and sulfur isotope compositions of DMSP from one phytoplankton species (Prorocentrum minimum) and five intertidal macroalgal species (Ulva lactuca, Ulva linza, Ulvaria obscura, Ulva prolifera, and Polysiphonia hendryi) in marine waters. We show that the sulfur isotope compositions (δ34S) of DMSP are depleted in 34S relative to the source seawater sulfate by ~1–3‰ and are …