SRX1897593 SLES_50_N2 SRP077858 PRJNA326920 454-pyrosequencing was used for studying bacterial diversity. Barcoded amplicons covered the V1-V2 region of the bacterial 16S rRNA gene. The pooled amplicons were analyzed using an FLX genome sequencer. The 16S rRNA bacterial sequences were processed and sorted using default parameters in the QIIME pipeline version 1.6.0. SRS1539603 SAMN05294036 SLES_50_N2 AMPLICON METAGENOMIC PCR 454 GS FLX Titanium SRX1897594 SLES_250_N2 SRP077858 PRJNA326920 454-pyrosequencing was used for studying bacterial diversity. Barcoded amplicons covered the V1-V2 region of the bacterial 16S rRNA gene. The pooled amplicons were analyzed using an FLX genome sequencer. The 16S rRNA bacterial sequences were processed and sorted using default parameters in the QIIME pipeline version 1.6.0. SRS1540459 SAMN05294037 SLES_250_N2 AMPLICON METAGENOMIC PCR 454 GS FLX Titanium SRX1897595 SLES_1000_N2 SRP077858 PRJNA326920 454-pyrosequencing was used for studying bacterial diversity. Barcoded amplicons covered the V1-V2 region of the bacterial 16S rRNA gene. The pooled amplicons were analyzed using an FLX genome sequencer. The 16S rRNA bacterial sequences were processed and sorted using default parameters in the QIIME pipeline version 1.6.0. SRS1540460 SAMN05294038 SLES_1000_N2 AMPLICON METAGENOMIC PCR 454 GS FLX Titanium SRX1897596 SLES_50_O2 SRP077858 PRJNA326920 454-pyrosequencing was used for studying bacterial diversity. Barcoded amplicons covered the V1-V2 region of the bacterial 16S rRNA gene. The pooled amplicons were analyzed using an FLX genome sequencer. The 16S rRNA bacterial sequences were processed and sorted using default parameters in the QIIME pipeline version 1.6.0. SRS1540461 SAMN05294039 SLES_50_O2 AMPLICON METAGENOMIC PCR 454 GS FLX Titanium SRX1897597 SLES_250_O2 SRP077858 PRJNA326920 454-pyrosequencing was used for studying bacterial diversity. Barcoded amplicons covered the V1-V2 region of the bacterial 16S rRNA gene. The pooled amplicons were analyzed using an FLX genome sequencer. The 16S rRNA bacterial sequences were processed and sorted using default parameters in the QIIME pipeline version 1.6.0. SRS1540462 SAMN05294040 SLES_250_O2 AMPLICON METAGENOMIC PCR 454 GS FLX Titanium SRX1897598 SLES_1000_O2 SRP077858 PRJNA326920 454-pyrosequencing was used for studying bacterial diversity. Barcoded amplicons covered the V1-V2 region of the bacterial 16S rRNA gene. The pooled amplicons were analyzed using an FLX genome sequencer. The 16S rRNA bacterial sequences were processed and sorted using default parameters in the QIIME pipeline version 1.6.0. SRS1540463 SAMN05294041 SLES_1000_O2 AMPLICON METAGENOMIC PCR 454 GS FLX Titanium