This National Science Foundation (NSF) Project Grant award under the Geosciences program (CFDA 47.050) provides $205,943 to the San Jose State University Research Foundation to characterize the composition, activity, and symbiotic nature of Rhizosolenia mat ecosystems in the North Pacific Subtropical Gyre. The project aims to determine whether these diatom mats obtain nitrogen from nitrogen-fixing microbes and assess their significance to the nitrogen cycle in this region. The investigators...
Stanford University was awarded a three-year, $751,285 Project Grant from the National Science Foundation Division of Ocean Sciences under the Geosciences federal grant program (CFDA 47.050). The grant will fund research to quantify nitrogen fixation rates of non-cyanobacterial diazotrophs and environmental controls on their activity from April 2021 through March 2024. As part of the Geosciences program's mission to expand fundamental knowledge of the integrated Earth system through basic...
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...
The National Science Foundation (NSF) awarded a $296,375 Project Grant under the Geosciences program (CFDA 47.050) to The Leland Stanford Junior University (Stanford University) for the project "Collaborative Research: The Effects of SUP05 Cells and Virocells on Nitrogen Cycling in Marine Oxygen Minimum Zones." This interdisciplinary study aims to evaluate the role of SUP05 bacterial cells and the viruses that infect them (phages) in regulating nitrogen cycling and loss processes...
This National Science Foundation (NSF) award under the Geosciences program (CFDA 47.050) will provide $344,271 to the University of California, Santa Cruz (UCSC) from January 1, 2025 to December 31, 2027 to characterize the composition, activity, and symbiotic nature of Rhizosolenia mat communities and their contribution to the nitrogen cycle in the North Pacific Subtropical Gyre. The project aims to determine whether Rhizosolenia mats, a type of phytoplankton aggregate, obtain nitrogen from...
This $303,609 Project Grant from the National Science Foundation Division of Ocean Sciences, under the Geosciences federal grant program (CFDA 47.050), will fund research to build understanding of the diversity and ecology of organisms in the deep ocean that utilize the carbon-fixing enzyme RuBisCO. The grantee, Stanford University, will analyze publicly available metagenomic data to examine the phylogenetic and enzymatic diversity of RuBisCO-encoding organisms across global mesopelagic and...
This $291,764 federal Project Grant award was provided by the National Science Foundation's Geosciences Program (CFDA 47.050) to North Carolina State University. The grant supports a postdoctoral research project to study a novel strain of the marine phytoplankton Synechococcus that has lost the ability to assimilate nitrate. This adaptation, likely in response to iron limitation, restricts these Synechococcus strains to a "recycling" state where they can only fix carbon along with...
This $916,578 federal Project Grant awarded by the National Science Foundation's (NSF) Geosciences Program (CFDA 47.050) supports fundamental research to expand understanding of iron adaptation in marine phytoplankton across global oceans. The key objectives are to: Characterize iron storage capacities and limitation thresholds for 20 Synechococcus phytoplankton strains from 11 ecotypes across a range of ocean iron niches. Analyze gene regulation responses to varying iron availability for the 20...
This National Science Foundation Project Grant of $539,985 supports research into the stoichiometric trait distribution of the marine microbiome. Funded through the Geosciences program under the Division of Ocean Sciences, the award will quantify the relationship between environmental conditions and the carbon, nitrogen, and phosphorus ratios in marine microbes. Over three years, the researchers from Colorado State University will characterize the biomass elemental composition of 50 marine...
The National Science Foundation (NSF) Division of Ocean Sciences awarded a $298,228 Project Grant to the University of North Carolina at Chapel Hill (UNC) under the Geosciences (CFDA 47.050) federal grant program. This two-year grant funds research to investigate how marine diatoms use proton-pumping rhodopsins as an alternative energy source under conditions of high light and low iron that hinder photosynthesis. The research aims to provide insight on how diatoms, which are responsible for a...
This $257,498 federal Project Grant award from the National Science Foundation's Geosciences Program (CFDA 47.050) is funding a 3-year research project at The Leland Stanford Junior University to characterize Rhizosolenia diatom mats and their associated nitrogen-fixing microbes in the North Pacific Subtropical Gyre. The project aims to determine if these diatom mats obtain nitrogen from symbiotic diazotrophs, which could transform the understanding of their role in oceanic nitrogen and carbon cycles. The research combines advanced microscopy, multi-omics, stable isotope, and in-situ observation techniques to provide the first detailed characterization of these fragile and cryptic Rhizosolenia mat ecosystems. The findings could also yield insights into diatom evolution and metabolic adaptation strategies. This project supports discovery while also providing professional development opportunities for early career researchers and developing an educational module on marine phytoplankton for public outreach.