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Environmental and ecological controls of the spatial distribution of microbial populations in aggregates

Fig 3

Neutralism [0,0,0].

(A) Relative abundances of B1, B2 and B3 populations in the community. Dashed red lines indicate 33.33% and 66.66% relative abundances. (B) Microbial fitness (median, ) is calculated in all replicates (n = 3 for 1.0 mM and 0.5 mM, n = 6 for 0.2 mM). Asterisks indicate the significance level of the difference between B1, B2 and B3 specific growth rate. (C) Aggregates captured at steady state (75 d for 1.0 mM and 0.5 mM, 100 d for 0.2 mM). Inactive bacteria are shown in a lighter colour. Black solid lines on bottom represent the scale bars. Significance level legend: ns, not significant; *, p < 0.05; **, p < 0.01; ***, p < 0.001.

doi: https://doi.org/10.1371/journal.pcbi.1010807.g003