Fig. 4: Results of the SourceTracker-based Bayesian mixing model.

a and b using proglacial lake water and lake sediment as a sink and other habitats as sources; c and d showing SourceTracker results of different taxa groups. proglacial lake water and lake sediment as a sink and other habitats as sources. Error bars represent the standard error of the mean. Sample abbreviation as fellows: SupC supraglacial cryoconite, SupS supraglacial stream, SubM subglacial meltwater, SubS subglacial sediment, ProW proglacial lake water, ProS proglacial lake sediment.