Co-inertia analysis (CIA) of the relationships between 19 sediment samples microbial community composition and environment factors.

<p>The scale is given by the value in the upper right corner which represents the length of the side of background grid squares. (a) Samples projected on the first two axes of the analysis. These axes account for 55% and 26% of the variation, respectively. (b) Histogram of the eigenvalues corresponding to the two co-inertia axes, which are equal to 3.15 and 0.85. (c) Main geochemical vectors that affect sample ordination in the co-inertia. The lengths of the vector arrows represent the influence of the given geochemical parameters on the co-structure of the CIA. Main geochemical vectors are represented by their chemical symbols, total arsenic is given as T-As and total sulfur is given as T-S. p-value = 0.002.