Estimated total number of cells in subseafloor sediment (for fraction of total global biomass of 0.18–3.6% see comments section)

Value 2.9E+29 cells/global subseafloor sediment
Organism Microbes
Reference Kallmeyer J, Pockalny R, Adhikari RR, Smith DC, D'Hondt S. Global distribution of microbial abundance and biomass in subseafloor sediment. Proc Natl Acad Sci U S A. 2012 Oct 2 109(40):16213-6. doi: 10.1073/pnas.1203849109. p.16215 right column 2nd paragraphKallmeyer J, Pockalny R, Adhikari RR, Smith DC, D'Hondt S. Global distribution of microbial abundance and biomass in subseafloor sediment. Proc Natl Acad Sci U S A. 2012 Oct 2 109(40):16213-6. doi: 10.1073/pnas.1203849109. p.16215 right column 2nd paragraphPubMed ID22927371
Method P.16213 right column 2nd paragraph: "[Researchers] compiled [their] cell counts from the South Pacific Gyre (ref 5), the North Pacific Gyre, and the eastern equatorial Pacific Ocean with previously published counts from ocean margins and the equatorial Pacific Ocean (Fig. 1B)."
Comments P.16215 right column 2nd paragraph: "Integrating over the world’s ocean area, [researchers] estimate the total number of cells in subseafloor sediment to be 2.9×10^29 cells. A bootstrap exercise to check [their] analytical solution yielded a median value of 3.3×10^29 cells, with the first SDs at 1.2×10^29 and 8.0×10^29 cells (see SI Text for details)." See Braun et al., 2016, PMID 27630628 p.7 right column top paragraph: "Based on a larger data set that also included very low cell abundances for the large oligotrophic ocean gyres, Kallmeyer et al. (2012) downscaled these numbers to a global inventory of 2.9 × 10^29 cells, corresponding to 0.18–3.6% of total global biomass." See BNID 108500
Entered by Uri M
ID 109975