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 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...
The National Science Foundation awarded a $437,163 Project Grant to Bigelow Laboratory for Ocean Sciences under the Mathematical and Physical Sciences federal grant program (CFDA 47.049) to investigate the mechanism of sunlight-mediated transformation of oil hydrocarbons from September 1, 2022 to August 31, 2025. The awardee will conduct a series of laboratory irradiation experiments using model mixtures of hydrocarbons and petroleum to systematically test various photochemical pathways. This...
The National Science Foundation (NSF) awarded a $452,705 project grant under the Geosciences program (CFDA 47.050) to the Regents of the University of Minnesota, Duluth. The grant will fund a 3-year collaborative research project to investigate how salt affects the photodegradation of dissolved organic matter (DOM) in aquatic environments. The research will examine the role of carboxyl groups in DOM structure and their interactions with salt ions under sunlight exposure. The study will compare...
This Project Grant award of $569,435 from the National Science Foundation's Geosciences Program (CFDA 47.050) will support a collaborative research project at Northeastern University to study the impact of plastic-derived dissolved organic carbon (PDOC) on the ocean's biological carbon pump. The key objectives are to: 1) test the hypothesis that bacteria consume PDOC, competing with phytoplankton for key nutrients like nitrogen and phosphorus, which could reduce ocean productivity and the...
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...
This Project Grant award from the National Science Foundation's Geosciences Program (CFDA 47.050) will support a collaborative research project titled "Nutrient-Mediated Interactions Between Plastic-Derived Dissolved Organic Carbon and the Biological Carbon Pump". The $665,899 award will fund research to explore how bacteria in ocean surface waters consume plastic-derived organic matter, potentially competing with phytoplankton for key nutrients like nitrogen and phosphorus. The...
This National Science Foundation Project Grant under the Integrative Activities program (CFDA 47.083) provides $221,015 to the University of New Hampshire from February 2022 to January 2024 to investigate changes in Arctic Ocean phytoplankton and track the vertical export of organic carbon they produce. Working with optical oceanography experts at the Scripps Institution of Oceanography, the University will analyze data from 2010-2021 field campaigns measuring inherent and apparent optical...
This Project Grant award of $645,614 from the National Science Foundation's Geosciences Program (CFDA 47.050) will support a collaborative research project to examine the biogeochemistry of dissolved organic sulfur (DOS) in the Pacific Ocean. The primary objectives are to: 1) quantify the DOS inventory across the Pacific, 2) identify abiotic and biotic processes governing DOS production and removal, and 3) investigate the reactivity of DOS components through monthly sampling at the Bermuda...
This $300,000 EAGER (Early-concept Grants for Exploratory Research) project, awarded by the National Science Foundation's (NSF) Geosciences Program (CFDA 47.050), aims to examine whether chemical reactions can alter the composition of land-derived organic carbon in a way that makes it appear similar to marine organic carbon. The research team from Old Dominion University Research Foundation will conduct experiments to monitor the reaction rates and compositional changes of land-derived organic...
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 acetone, resulting from the photolysis of marine DOM. The research plan combines laboratory experiments and a 19-day research cruise to address three key questions related to the role of these photoproducts in the removal of DOM from the oceans. The findings are expected to be of interest to scientists across various disciplines including biology, chemistry, ecology, climate science, and ocean-atmosphere modeling. The award also supports research and educational opportunities for a postdoctoral scholar, graduate student, and undergraduate students, as well as public outreach activities.