TABLE 1

Mean values of 18O enrichments in ROIs defined as polyP and as cytoplasm and the ratio between the means of enrichments in polyP and cytoplasma

Region or parameterMean 18O enrichments (atom %)
Oxic,
high H2S
Oxic,
low H2S
Anoxic,
high H2S
Anoxic,
low H2S
Control,
high H2S
Control,
low H2S
ROIs defined
as polyP
2.22.01.41.10.80.5
SD = 1.0SD = 0.3SD = 0.2SD = 0.3SD = 0.2SD = 0.2
n = 53n = 48n = 22n = 78n = 36n = 23
ROIs defined
as cytoplasm
0.61.30.40.70.50.3
SD = 0.2SD = 0.2SD = 0.2SD = 0.2SD = 0.2SD = 0.1
n = 44n = 44n = 17n = 45n = 10n = 29
PolyP/cytoplasm
ratio
3.91.53.01.61.61.4
  • a It becomes evident that the polyP/cytoplasm ratio is distinctively higher in treatments exposed to high sulfide fluxes, both under oxic and under anoxic conditions. The polyP/cytoplasm ratio and values are shown in boldface type.