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. 2018 Aug 21;9:1928. doi: 10.3389/fmicb.2018.01928

FIGURE 1.

FIGURE 1

Canonical correspondence analysis (CCA) of soil samples demonstrates that community composition differs both among and within basins and that the role of conductivity, distance to trough, and pH in driving within-basin variation differs among basins. Arrows indicate direction and magnitude of significant environmental factors affecting bacterial community structure.