Olofsson, Malin
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences
Research article2025Peer reviewedOpen access
A global dataset of nitrogen fixation rates across inland and coastal waters
Fulweiler, Robinson W.; Berberich, Megan E.; Rinehart, Shelby A.; Taylor, Jason M.; Kelly, Michelle C.; Ray, Nicholas E.; Oczkowski, Autumn; Balint, Sawyer J.; Geisser, Alexandra H.; Mahoney, Catherine R.; Benavides, Mar; Church, Matthew J.; Loeks, Brianna; Newell, Silvia E.; Olofsson, Malin; Oppong, Jimmy C.; Roley, Sarah S.; Vizza, Carmella; Wilson, Samuel T.; Groffman, Peter M.;
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Abstract
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. Here we present a compiled dataset of 4793 nitrogen fixation (N2-fixation) rates measured in the water column and benthos of inland and coastal systems via the acetylene reduction assay, 15N2 labeling, or N2/Ar technique. While the data are distributed across seven continents, most observations (88%) are from the northern hemisphere. 15N2 labeling accounted for 67% of water column measurements, while the acetylene reduction assay accounted for 81% of benthic N2-fixation observations. Dataset median area-, volume-, and mass-normalized N2-fixation rates are 7.1 mu mol N2-N m-2 h-1, 2.3 x 10-4 mu mol N2-N L-1 h-1, and 4.8 x 10-4 mu mol N2-N g-1 h-1, respectively. This dataset will facilitate future efforts to study and scale N2-fixation contributions across inland and coastal aquatic environments.
Published in
Limnology and Oceanography Letters
2025
Publisher: WILEY
SLU Authors
UKÄ Subject classification
Oceanography, Hydrology, Water Resources
Publication identifier
- DOI: https://doi.org/10.1002/lol2.10459
Permanent link to this page (URI)
https://res.slu.se/id/publ/141351