Silicon cycle and balance in the modern world ocean [1]
Input, output, and biological silicon fluxes, with possible balance. Total silicon inputs = total silicon outputs = 15.6 Tmol Si yr−1 in reasonable agreement with the individual range of each flux. White arrows represent fluxes of net sources of dissolved silicic acid and/or of dissolvable amorphous silica and of dissolved silicic acid recycled fluxes. Orange arrows represent sink fluxes of silicon, either as biogenic silica or as authigenic silica. Green arrows correspond to biological (pelagic) fluxes. Values of flux as published by Tréguer & De La Rocha.[1] Fluxes in teramoles of silicon per year (Tmol Si yr−1).
The silica cycle is the biogeochemical cycle in which biogenic silica is transported between the Earth's systems. Silicon is considered a bioessential element and is one of the most abundant elements on Earth.[2][3] The silica cycle has significant overlap with the carbon cycle (see carbonate–silicate cycle) and plays an important role in the sequestration of carbon through continental weathering, biogenic export and burial as oozes on geologic timescales.[4]
- ^ a b Tréguer, Paul J.; Sutton, Jill N.; Brzezinski, Mark; Charette, Matthew A.; et al. (2021). "Reviews and syntheses: The biogeochemical cycle of silicon in the modern ocean". Biogeosciences. 18 (4): 1269–1289. Bibcode:2021BGeo...18.1269T. doi:10.5194/bg-18-1269-2021. hdl:10261/230297. S2CID 233993801.
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