Articles | Volume 18, issue 19
https://doi.org/10.5194/bg-18-5327-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-18-5327-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
01 Oct 2021
Research article |
| 01 Oct 2021
| 01 Oct 2021
Riverine nitrogen supply to the global ocean and its limited impact on global marine primary production: a feedback study using an Earth system model
Miriam Tivig
CORRESPONDING AUTHOR
Biogeochemical Modelling, GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel, Düsternbrooker Weg 20, 24105 Kiel, Germany
Abteilung Klima und Umwelt, Deutscher Wetterdienst, Güterfelder Damm 87–91, 14532 Stahnsdorf, Germany
David P. Keller
Biogeochemical Modelling, GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel, Düsternbrooker Weg 20, 24105 Kiel, Germany
Andreas Oschlies
Biogeochemical Modelling, GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel, Düsternbrooker Weg 20, 24105 Kiel, Germany
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Short summary
Nitrogen is one of the most important elements for life in the ocean. A major source is the riverine discharge of dissolved nitrogen. While global models often omit rivers as a nutrient source, we included nitrogen from rivers in our Earth system model and found that additional nitrogen affected marine biology not only locally but also in regions far off the coast. Depending on regional conditions, primary production was enhanced or even decreased due to internal feedbacks in the nitrogen cycle.
Nitrogen is one of the most important elements for life in the ocean. A major source is the...
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