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(a) Average Beggiatoa filament length (mm) over time (d). Day 0 = inoculum. Error bars indicate SE (n = 42). (b, c) Frequency (%) of Beggiatoa filament lengths in classes of 1 mm, averaged for day 1–5 (n = 210; b) and for day 6–14 (n = 378; c)
