Co-occurrence patterns of plants and soil bacteria in the high-alpine subnival zone track environmental harshness.

However, when plants with no correlated clades were removed from the analysis, there was a significant relationship between plant abundance and average correlation strength for clades associated with a particular plant species ( r = 0.88, two-tailed t -test for rho = 0: p = 0.004, Figure 4 B) and a weakly significant correlation for the number of correlated bacterial clades ( r = 0.67, one-tailed t -test for rho = 0: p = 0.0275, Figure 4 A).

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