sea floor depth 200fg C/µm^3: ~10m beneath sea floor 1000fg C/µm^3: ~40m beneath sea floor 600 fg C/µm^3
||Braun S et al., Size and Carbon Content of Sub-seafloor Microbial Cells at Landsort Deep, Baltic Sea. Front Microbiol. 2016 Aug 31 7: 1375. doi: 10.3389/fmicb.2016.01375 p.7 left column 2nd paragraph, p.8 figure 5 and p.10 left column top paragraphPubMed ID27630628
||Abstract: "To determine their shape and volume, cells were separated from the sediment matrix by multi-layer density centrifugation and visualized via epifluorescence microscopy (FM) and scanning electron microscopy (SEM). Total cell-carbon was calculated from amino acid-carbon, which was analyzed by high-performance liquid chromatography (HPLC) after cells had been purified by fluorescence-activated cell sorting (FACS)." P.8 caption to figure 5: "The mean cell-specific carbon density (in the literature often expressed as “carbon-volume ratio”) increases with depth, indicating that cells become more “packed” and “dry” by decreasing their water content."
||P.7 left column 2nd paragraph: "The cell-specific carbon density increased with sediment depth from ~200 to 600 fg C/μm^3, peaking at 1000 fg C/μm^3 at 10 m depth (Figure 5)." p.10 left column top paragraph: "The cell-specific carbon density that
[investigators] observed in [their] cell extracts increased with sediment depth from ∼200 to 600fgC/μm^3, peaking at 1000fgC/μm^3 at 10m depth (Figure 5)." fgC=10^-15grams Carbon