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Enrichment factors (XF) for aqueous ions and cryoconite bacterial production and photosynthesis vs. δ18O-H20 (a measure of the % ice melt). Enrichment factors are the ratio of the measured aqueous concentrations of the ion to the mean concentration of that ion in initial frozen cryoconite holes. Statistics refer to Pearson correlation coefficients after taking the logarithm of the enrichment factor.
