Fig. 5: DOM composition indices.

Aromaticity from aromaticity index AImod (a), lability from MLBw (b), and percentage contribution of AbioS MFs to total sample intensity by water type (c). Boxplots display minimum, first quartile, median, third quartile, maximum, and outliers (black circles), including technical and analytical replicates (n = 35, gray dots) colored by water type.