Modern rate of net sulfide generation

Value 2.62e+12 mol S/year
Organism Biosphere
Reference Johnston DT, Wolfe-Simon F, Pearson A, Knoll AH. Anoxygenic photosynthesis modulated Proterozoic oxygen and sustained Earth's middle age. Proc Natl Acad Sci U S A. 2009 Oct 6 106(40):16925-9. doi: 10.1073/pnas.0909248106 p.16927 left column top paragraphPubMed ID19805080
Primary Source Turchyn AV, Schrag DP (2006) Cenozoic evolution of the sulfur cycle: Insight from oxygen isotopes in marine sulfate. Earth Planet Sci Lett 241: 763–779.
Comments "Because the theoretical maximum contribution from sulfide-using anoxygenic photoautotrophs is equal to integrated rates of sulfate reduction (38), the modern rate of net sulfide generation (2.62X10^12 mol S/year) (primary source) sets an upper limit on the hypothetical contribution from anoxygenic photosynthesis to total modern primary production at 0.17% (see SI Text for calculation details)."
Entered by Uri M
ID 110486