Fig. 4: Correlations between carbon (C) stocks and the soil microbiome in the organic horizon.
From: Fungal community composition predicts forest carbon storage at a continental scale
Panels showing that total fungal composition (principal coordinate analysis axis 2; PCoA2; a; n = 106) and richness (b; n = 106) as well as bacterial composition (PCoA1; c; n = 104) and richness (d; n = 104) are correlated with tree growth rates. Because there were no correlations in the mineral horizon (except for a weak correlation between bacterial composition and soil organic carbon stocks, see Supplementary Fig. 3), communities and carbon stocks from the organic horizon alone are shown. Plotted lines show linear correlations, shaded areas around each line are 95% confidence intervals, and r values are Pearson correlation coefficients. The full statistical models, including all co-variates, for each correlation are shown in Supplementary Data 3. Only significant correlation coefficients are shown (P ≤ 0.05).
