Additional file 6: of Structural variability and niche differentiation in the rhizosphere and endosphere bacterial microbiome of field-grown poplar trees

Indicator species analysis. Associations were calculated with the Dufrene–Legendre indicator species analysis routine (Indval, indicator value) in R. Significance levels: P ≤ 0.05•; P ≤ 0.01*; P ≤ 0.001**. P values were corrected for multiple comparisons using the false discovery rate (FDR) with the Benjamini–Hochberg method.(XLSX 44 kb)指示物种分析（Indicator species analysis）。采用R语言中的Dufrene-Legendre指示物种分析程序（Indval，即指示值法）计算关联度。显著性水平设定为：P≤0.05（•）；P≤0.01（*）；P≤0.001（**）。研究采用Benjamini-Hochberg法结合错误发现率（false discovery rate, FDR）对P值进行多重比较校正。（XLSX 44 kb）