Biogeochemical cycle of Si in the world ocean at steady state

Range Figure - link 1Tmol Si/year
Organism Biosphere
Reference Tréguer P et al., The silica balance in the world ocean: a reestimate. Science. 1995 Apr 21 268(5209):375-9. DOI: 10.1126/science.268.5209.375 p.376 Fig.1PubMed ID17746543
Comments P.375 left column top paragraph: "In this article [investigators] focus on the marine biogeochemical cycle of Si (Fig. 1), covering time scales from 1 to 10,000 years. Dissolved Si in seawater occurs mostly (~95%) as the undissociated monomeric silicic acid Si(OH)4." P.375 left column bottom paragraph: "In the modern ocean the distribution of silicic acid in the different water masses is governed by complex interactions among physical, chemical, geological, and biological processes. The silicic acid content is determined by the balance between geological and biological cycles of Si. The surface reservoir (Fig. 1) receives silicic acid inputs from the lithosphere both directly, via chemical weathering of the continental crust, and indirectly, through eolian transport." See note beneath figure. 1Tmol=1 teramole = 10^12 moles. See later adaptation of the above graph, in Tréguer P et al., 2013 PMID 22809182 p.479 figure 1 link
Entered by Uri M
ID 114447