Results 71 to 80 of about 14,221 (217)

A global dataset of nitrogen fixation rates across inland and coastal waters

Limnology and Oceanography Letters
Biological nitrogen fixation is the conversion of dinitrogen (N2) gas into bioavailable nitrogen by microorganisms with consequences for primary production, ecosystem function, and global climate.
Robinson W. Fulweiler, Megan E. Berberich, Shelby A. Rinehart, Jason M. Taylor, Michelle C. Kelly, Nicholas E. Ray, Autumn Oczkowski, Sawyer J. Balint, Alexandra H. Geisser, Catherine R. Mahoney, Mar Benavides, Matthew J. Church, Brianna Loeks, Silvia E. Newell, Malin Olofsson, Jimmy C. Oppong, Sarah S. Roley, Carmella Vizza, Samuel T. Wilson, Peter M. Groffman, J. Thad Scott, Amy M. Marcarelli   +21 more
doaj   +1 more source

Heterogeneity of nitrogen fixation in the mesopelagic zone of the South China Sea

Frontiers in Marine Science
Biological dinitrogen (N2) fixation, the energetically expensive conversion of N2 gas to ammonia, plays an essential role in balancing the nitrogen budget in the ocean.
Siqi Wu, Siqi Wu, Xianhui Sean Wan, Xianhui Sean Wan, Moge Du, Moge Du, Xirong Chen, Corday R. Selden, Mar Benavides, Mar Benavides, Mar Benavides, Sophie Bonnet, Carolin R. Löscher, Carolin R. Löscher, M. Robert Hamersley, Margaret R. Mulholland, Xiuli Yan, Shuh-Ji Kao   +17 more
doaj   +1 more source

Dinitrogen fixation and residue nitrogen of different managed legumes and nitrogen uptake of subsequent winter wheat [N2-Fixierung und residualer Stickstoff verschiedener Futterleguminosen sowie N-Aufnahme der Folgefrucht Winterweizen.] [PDF]

, 1999
Fixed nitrogen accumulated by legumes is the main nitrogen source for organic farming systems. Knowledge about the amount of fixed nitrogen, its pathways into forage yield, crop residues, soil-N and yield formation of the following crop is needed for ...
Kaske, A., Loges, Ralf, Taube, F.
core  

Electroenzymatic Cascades for Nitrogen Upgrading: Beyond Ammonia Towards Value‐Added Nitrogen Chemicals

ChemCatChem, Volume 18, Issue 7, 14 April 2026.
This review maps how electroenzymatic cascades that couple nitrogen‐cycle enzymes with C─N bond forming auxilary enzymes, powered by direct electron transfer (DET) or mediated electron transfer (MET), can upgrade N2 and waste nitrogen streams into value‐added amines, amides, amino acids, and other nitrogen‐based chemicals.
Rohit G. Jadhav, Vamshi Krishna Kamaja, Wassim El Housseini, Monica Brachi, Shelley D. Minteer   +4 more
wiley   +1 more source

Synthesis and Catalytic Activity of Molybdenum Complexes Bearing Dihydroimidazole‐Based PCP‐Type Pincer Ligands Toward Nitrogen Fixation

ChemistryEurope, Volume 4, Issue 4, April 2026.
A new series of molybdenum complexes bearing dihydroimidazole‐based PCP‐type pincer ligands has been developed, which can catalyze ammonia production from dinitrogen and water using samarium diiodide as a reductant under ambient reaction conditions.
Yasuomi Yamazaki, Kaito Nakaya, Hiroki Otsuka, Taiji Nakamura, Hiromasa Tanaka, Kazunari Yoshizawa, Yoshiaki Nishibayashi   +6 more
wiley   +1 more source

Nitrogen Isotope Evidence for Changing Arctic Ocean Ventilation Regimes During the Cenozoic

Geophysical Research Letters, 2022
In this work, I report on the coupling of dinitrogen (N2) fixation and denitrification in oxygen‐deficient waters of the Arctic Ocean during the Paleogene. This coupling fertilized marine phytoplankton growth and favored organic carbon burial.
Jochen Knies
doaj   +1 more source

N_2 Functionalization at Iron Metallaboratranes [PDF]

, 2011
The reactivity of the anionic dinitrogen complex [(TPB)Fe(N_2)]^− (TPB = tris[2-(diisopropylphosphino)phenyl]borane) toward silicon electrophiles has been examined. [(TPB)Fe(N_2)]^− reacts with trimethylsilyl chloride to yield the silyldiazenido complex (
Moret, Marc-Etienne, Peters, Jonas C.
core   +1 more source

Impacts of Biostimulants on Nitrous Oxide Emissions and the Soil Microbiome

Journal of Plant Nutrition and Soil Science, Volume 189, Issue 2, Page 216-229, April 2026.
Soil incubation experiment examining the influence of biostimulants on greenhouse gas emissions and the soil microbiome in fertilized soils. ABSTRACT Background Overapplication of nitrogenous fertilizer and enhanced microbial activity in agricultural soils are drivers of increasing greenhouse gas emissions.
Conor Blunt, Sean Storey, Andrea Fuchs, Rainer Melzer, Grace M. Cott   +4 more
wiley   +1 more source

Benthic nitrogen fixation in Zostera marina meadows in an upwelling-influenced coastal lagoon

Ciencias Marinas, 2017
Dinitrogen (N2) fixation rates were determined in the phyllosphere and in sediments with and without the presence of eelgrass (Zostera marina) in San Quintín Bay, an upwelling-influenced coastal lagoon in the NE Pacific.
Julieta Hernández-López, Víctor F Camacho-Ibar, Alfonso Macías-Tapia, Karen J McGlathery, Luis W Daesslé, Jose M Sandoval-Gil   +5 more
doaj   +1 more source

Seasonal nitrate drawdown transitions lake ecosystems from phosphorus to nitrogen deficiency in annual cycles

Limnology and Oceanography, Volume 71, Issue 4, April 2026.
Abstract Phytoplankton biomass is often limited by nitrogen (N) and/or phosphorus (P). Quantifying the relative availability of N and P in an ecosystem is useful in indicating nutrient limitation status. In subtropical lakes, nitrate availability generally follows a seasonal pattern with maxima in the late winter/early spring and minima in late summer ...
Jasmine K. Stovall, Nicole D. Wagner, Katelyn McKindles, Michelle Neudeck, Matthew Rich, George S. Bullerjahn, J. Thad Scott   +6 more
wiley   +1 more source