TABLE 1.

MPN counts obtained with oxic and anoxic media supplemented with different electron acceptors of sediments from the Neuharlingersieler Nacken and Gröninger Plate sites

Site and sediment depth (cm)Total cell count (g−1)aMPN count (g of sediment−1)a obtained by:
Oxic incubationAnoxic incubation
Sulfate freeSulfateIron hydroxideManganese oxide
NSN
    0.58.06 × 1083.96 × 1053.60 × 1063.60 × 1057.21 × 1077.21 × 107
    56.52 × 1083.27 × 1044.16 × 1042.97 × 1041.49 × 1085.95 × 107
    501.93 × 1081.38 × 1051.60 × 1046.07 × 1043.04 × 1073.04 × 107
    1002.50 × 1086.37 × 1023.19 × 1051.27 × 1043.51 × 1046.69 × 104
    200ND1.23 × 102NDND2.71 × 1061.23 × 105
    3001.53 × 1071.37 × 102NDNDNDND
    400ND8.76 × 101NDND2.63 × 1034.38 × 102
    4506.46 × 1079.19 × 101NDNDNDND
GP
    0.51.39 × 1091.25 × 1065.49 × 1045.49 × 1062.75 × 1084.99 × 106
    55.85 × 1083.14 × 1052.23 × 1021.71 × 1052.00 × 1072.00 × 105
    508.27 × 1074.00 × 1051.53 × 1043.64 × 1051.82 × 1057.27 × 105
    1001.27 × 1086.10 × 1043.05 × 1041.04 × 1034.57 × 1044.57 × 105
    200ND3.32 × 1044.22 × 1028.44 × 1039.04 × 1011.21 × 102
    3006.13 × 1072.29 × 1021.48 × 1048.65 × 102NDND
    400ND2.33 × 1033.62 × 1035.69 × 103NDND
    5006.46 × 1071.22 × 1033.04 × 1041.03 × 1035.70 × 1021.14 × 103
    5504.65 × 1074.27 × 1022.85 × 1039.69 × 102NDND
  • a ND, not determined.