Benthic silicon cycling in the Arctic Barents Sea: a reaction–transport model study

Ward, James P. J.; Hendry, Katharine R.; Arndt, Sandra; Faust, Johan C.; Freitas, Felipe S.; Henley, Sian F.; Krause, Jeffrey W.; März, Christian; Tessin, Allyson C.; Airs, Ruth L.

doi:https://doi.org/10.5194/bg-19-3445-2022

Articles | Volume 19, issue 14

https://doi.org/10.5194/bg-19-3445-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-19-3445-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 14

Research article

|

21 Jul 2022

Research article |

| 21 Jul 2022

Benthic silicon cycling in the Arctic Barents Sea: a reaction–transport model study

James P. J. Ward, Katharine R. Hendry, Sandra Arndt, Johan C. Faust, Felipe S. Freitas, Sian F. Henley, Jeffrey W. Krause, Christian März, Allyson C. Tessin, and Ruth L. Airs

Supplement

https://doi.org/10.5194/bg-19-3445-2022-supplement

Data sets

Benthic silica flux magnitudes and silicon isotopic composition of marine sediment pore waters and solid phase leachates for the Barents Sea (summer 2017-2019) James P. J. Ward, Felipe S. Freitas, Sian F. Henley, and Johan C. Faust https://doi.org/10.5285/8933AF23-E051-4166-B63E-2155330A21D8

Model code and software

Biogeochemical Reaction Network Simulator (BRNS) for the Barents Sea benthic silica cycle James P. J. Ward, Katharine Hendry, Sandra Arndt, and Felipe S. Freitas https://doi.org/10.5281/zenodo.6023767

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Short summary

The seafloor plays an important role in the cycling of silicon (Si), a key nutrient that promotes marine primary productivity. In our model study, we disentangle major controls on the seafloor Si cycle to better anticipate the impacts of continued warming and sea ice melt in the Barents Sea. We uncover a coupling of the iron redox and Si cycles, dissolution of lithogenic silicates, and authigenic clay formation, comprising a Si sink that could have implications for the Arctic Ocean Si budget.