This Project Grant award from the National Science Foundation's Geosciences Program (CFDA 47.050) will fund a five-year research project entitled "CAREER: Deconvolving Organic Substrates as the Critical Link between Changes in Organic Matter and Global Biogeochemical Sulfur, Carbon, and Oxygen Cycling" at The Johns Hopkins University. The $231,196 award, starting on December 1, 2024, will determine how the production of organic substrates by fermenting microorganisms impacts microbial sulfate reduction and sulfur isotope signatures in sediment dominated by plant versus microbial organic matter. The project aims to evaluate how the rise of seed plants led to the establishment of modern biogeochemical sulfur cycling and how mixing of organic matter types impacts the carbon cycle. Educational activities will also be conducted to build enthusiasm for geoscience in underrepresented high school students, including a one-week geoscience camp and summer research internships.
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