This National Science Foundation (NSF) Geosciences Program (CFDA 47.050) project grant award of $645,614 to the Old Dominion University Research Foundation (Odurf) will support a 3-year collaborative research study on dissolved organic sulfur (DOS) biogeochemistry in the Pacific and Atlantic Oceans. The key objectives are to: 1) quantify the DOS inventory across the Pacific Ocean, 2) identify abiotic and biotic processes governing DOS production and removal, and 3) investigate the reactivity...
This $126,324 Project Grant award from the National Science Foundation's Geosciences Program (CFDA 47.050) supports a collaborative research study on the contribution of dissolved organic nitrogen (DON) to biological nitrogen demand in the subtropical North Pacific Ocean. The research team from Texas A&M University will conduct a one-month research expedition across the North Pacific to investigate the production, accumulation, chemical composition, and utilization of DON, and link it to...
This $300,785 federal Project Grant award from the National Science Foundation's Geosciences Program (CFDA 47.050) supports a research project to characterize the chemical composition and bioavailability of dissolved organic matter released by marine nitrifying microorganisms. The project aims to determine how this material contributes to carbon cycling in the deep ocean, which may help improve biogeochemical models and inform potential marine carbon dioxide removal activities. The research will...
This National Science Foundation project grant of $399,720 awarded on July 1, 2022 will fund research into the distribution and cycling of carboxyl-rich alicyclic molecules (CRAM) in the ocean. Led by Texas A&M University under the Geosciences program (CFDA 47.050), the research aims to measure the variable distribution of CRAM across oceans and determine the dominant mechanisms of CRAM production and removal. The project will leverage existing ocean sample collections and conduct new...
The National Science Foundation (NSF) awarded a $309,557 Project Grant under the Geosciences Program (CFDA 47.050) to the University of Texas at Austin. The grant will fund a collaborative research project to study the fate of amino acids and the formation of refractory dissolved organic nitrogen (DON) in the ocean. Using stable isotope labeling techniques, the study will trace how amino acids are converted to different forms, including inorganic nitrogen, labile DON, and refractory DON, which...
This Project Grant award for $388,527, provided by the National Science Foundation (NSF) Geosciences Program (CFDA 47.050), supports research on how salt affects the photodegradation of dissolved organic matter (DOM) in aquatic ecosystems. The project, led by Texas A&M University-Corpus Christi (TAMU-CC), will investigate the role of salt in photochemical reactions involving DOM, which plays key ecological roles in energy transfer, metal binding, and interactions with pollutants. Experiments...
This Project Grant award from the National Science Foundation's (NSF) Division of Ocean Sciences, under the Geosciences program (CFDA 47.050), will investigate the photochemical breakdown of marine dissolved organic matter (DOM) and its impact on the global carbon cycle. The $683,778 award, valid from July 2023 to June 2026, will focus on studying the production rates and quantum yields of one and two-carbon photoproducts, such as carbon monoxide, dissolved inorganic carbon, formaldehyde, and...
This $369,916 Project Grant award from the National Science Foundation's Geosciences Program (CFDA 47.050) supports a collaborative research project between the University of South Florida and the University of Hawaii. The primary objectives are to: 1) use iron isotopes as a tracer to determine the relative supply of dust, sediment, and hydrothermal-derived iron to the subtropical and equatorial Pacific Ocean; 2) investigate how microorganisms fractionate iron isotopes during iron uptake and how...
This $422,265 Project Grant award from the National Science Foundation's Geosciences program (CFDA 47.050) will fund a collaborative research project led by Oregon State University (OSU) to characterize the physiological and environmental cycling of abundant osmolytes in the ocean. The project aims to: 1) identify how different microbial taxa respond to nitrogen stress by producing distinct osmolytes, 2) measure rates of osmolyte assimilation and their metabolic fate, and 3) quantify osmolyte...
The National Science Foundation Division of Ocean Sciences awarded a $438,331 project grant to the University of Massachusetts Dartmouth under the Geosciences program (CFDA 47.050) to conduct collaborative research from April 1, 2023 through March 31, 2026. The research aims to characterize amino acid nitrogen isotopes in phytoplankton and advance understanding of isotopic patterns produced under varying physiological conditions. Investigators and students will explore how different...