Prokaryotic Diversity and Composition of Sediments From Prydz Bay, the Antarctic Peninsula Region, and the Ross Sea, Southern Ocean.

Results Environmental Characterization of Sediments Generally, the contents of TC, TOC, and TN differed among the three regions, although these differences did not reach statistical significance.

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The Deltaproteobacteria participate in carbon fixation via the Calvin cycle and in sulfur oxidation, as well as in oxidation of methylated compounds ( Swan et al., 2011 ); therefore, members of this class may be significant contributors to chemoautotrophy in the dark ocean ( Swan et al., 2011 ).

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