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. 2021 Feb 11;12:632280. doi: 10.3389/fmicb.2021.632280

FIGURE 6.

FIGURE 6

Quantitative comparisons of global bacterial and fungal species richness. The median as well as the 25th and 75th percentile of the samples is presented, individual data points outside of this range are given as mean ± standard deviation of three replicate samples. Significant differences due to crop sequences are noted with an asterisk. The dark blue boxplot represents the canola-soybean sequence (Ca-S), light blue boxplots are the soybean-soybean sequence (S-S) and the purple boxplots are the corn-soybean sequence (C-S). Quantitative comparison of cumulative bulk soil and rhizosphere samples of: (A) bacterial species richness measure of observed OTUs (B) bacterial Shannon Index Diversity measure of alpha diversity (C) fungal species richness measure of observed OTUs (D) fungal Shannon Index Diversity measure of alpha diversity. Statistical significance was analyzed by the Kruskal-Wallis test. Asterisks indicate statistically significance (P < 0.05).