Science Advances

Supplementary Materials

This PDF file includes:

  • table S1. Percentage of shared and total number of OTUs and ANOSIM based on Bray-Curtis distance matrix between oxygenation conditions (based on ARISA profiles, upper-left corner of the table).
  • table S2. Percentage of shared and total number of OTU0.03 (based on 454 NGS, without singletons) between stations.
  • table S3. Pairwise comparisons based on OTU presence-absence (without singletons) between oxygenation regimes (at the OTU0.03 level) for the three key bacterial groups: Deltaproteobacteria (up), Gammaproteobacteria (center), and Flavobacteriia (down).
  • table S4. Overview of 454 OTU sequences of relevant bacterial types responding to changes in bottom water oxygen concentration.
  • table S5. Ranking of most abundant bacterial OTUs (without singletons) in decreasing order of their relative sequence abundance (in %) across all samples.
  • table S6. Contribution (%) of each hypothesized relationship (path) to global explained variability global R2; see Tenenhaus et al. (107) for details.
  • table S7. Abundance of macrofauna and meiofauna taxa of the northwestern Crimean Shelf.
  • fig. S1. Ten years (5 May 2000 to 5 May 2010) of satellite-based surface chlorophyll a concentration.
  • fig. S2. Downcore organic carbon (%Corg) in the upper 70 cm comparing permanent oxic (station 462, 105 m) and anoxic (station 448, 207 m) conditions on the Crimean shelf.
  • fig. S3. Downcore THAA concentrations (μmol gdw−1) and DI comparing permanent oxic (station 462, 105 m) and anoxic (station 448, 207 m) conditions on the Crimean shelf.
  • fig. S4. THAA concentration integrated 0 to 5 cm (bars) and THAA surface concentrations (triangles).
  • fig. S5. Sulfurization ratio calculated for molecular formulae detected in pore waters extracted from oxic (A) and anoxic conditions (B).
  • fig. S6. Downcore cell abundances single cells (×109) ml sediment−1, in the upper 30 cm, comparing oxygen regimes on the Crimean shelf.
  • fig. S7. Ordination biplots generated by Correspondence Analysis (CA) of benthic communities retrieved on the Crimean shelf; (A) bacterial communities (based on ARISA fingerprinting), (B) meiofaunal and (C) macrofaunal abundances of each taxonomic group.

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