Region or parameter | Mean ^{18}O enrichments (atom %) | |||||
---|---|---|---|---|---|---|

Oxic, high H _{2}S | Oxic, low H _{2}S | Anoxic, high H _{2}S | Anoxic, low H _{2}S | Control, high H _{2}S | Control, low H _{2}S | |

ROIs defined as polyP | 2.2 | 2.0 | 1.4 | 1.1 | 0.8 | 0.5 |

SD = 1.0 | SD = 0.3 | SD = 0.2 | SD = 0.3 | SD = 0.2 | SD = 0.2 | |

n = 53 | n = 48 | n = 22 | n = 78 | n = 36 | n = 23 | |

ROIs defined as cytoplasm | 0.6 | 1.3 | 0.4 | 0.7 | 0.5 | 0.3 |

SD = 0.2 | SD = 0.2 | SD = 0.2 | SD = 0.2 | SD = 0.2 | SD = 0.1 | |

n = 44 | n = 44 | n = 17 | n = 45 | n = 10 | n = 29 | |

PolyP/cytoplasm ratio | 3.9 | 1.5 | 3.0 | 1.6 | 1.6 | 1.4 |

↵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.