Figure 1

Persistence of OTUs in microbial communities at L4 over a 6-year time period. Median OTU abundance, calculated for all time points, over a 6-year period is set proportional to node size on a logarithmic scale. Only OTUs found in at least 5% of the time-series samples (⩾4) are shown. This includes 22.53% of the OTUs, representing 97.48% of the sampled organisms. Node coloring shows the differences in persistence over time, with the color scale from orange (5%), yellow (16%), green (35%), blue (66%), red (100%) reflecting increasing persistence.