Articles | Volume 18, issue 4
https://doi.org/10.5194/bg-18-1269-2021
https://doi.org/10.5194/bg-18-1269-2021
Reviews and syntheses
 | 
18 Feb 2021
Reviews and syntheses |  | 18 Feb 2021

Reviews and syntheses: The biogeochemical cycle of silicon in the modern ocean

Paul J. Tréguer, Jill N. Sutton, Mark Brzezinski, Matthew A. Charette, Timothy Devries, Stephanie Dutkiewicz, Claudia Ehlert, Jon Hawkings, Aude Leynaert, Su Mei Liu, Natalia Llopis Monferrer, María López-Acosta, Manuel Maldonado, Shaily Rahman, Lihua Ran, and Olivier Rouxel

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Discussed (final revised paper)

Latest update: 11 Nov 2024
Short summary
Silicon is the second most abundant element of the Earth's crust. In this review, we show that silicon inputs and outputs, to and from the world ocean, are 57 % and 37 % higher, respectively, than previous estimates. These changes are significant, modifying factors such as the geochemical residence time of silicon, which is now about 8000 years and 2 times faster than previously assumed. We also update the total biogenic silica pelagic production and provide an estimate for sponge production.
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