Fig. 4: Redundancy analysis of microbial assemblages in the SLM sediment profile. | ISME Communications

Fig. 4: Redundancy analysis of microbial assemblages in the SLM sediment profile.

From: Biogeochemical and historical drivers of microbial community composition and structure in sediments from Mercer Subglacial Lake, West Antarctica

Fig. 4

The first two dimensions of the ordination plot are shown for (a) environmental parameters and (b) ASVs that are explanatory variables of community structure (black arrows). The classification of ASVs is shown in Fig. 3 with the exception of ASV_270, which had a relative abundance of 0.15% of total sequences and classifies within the genus Pseudomonas. The two axes in the RDA model explain 38.15% of the cumulative variance in the community composition. Based on a permutation test of total variance for environmental variables and community composition (p value ≤0.001; ANOVA, 999 permutations), the dispersion of unit I in ordination space is significantly different from units II–IV.

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