Figure 7
From: Origins and transformations of dissolved organic matter in large Arctic rivers

C-normalized concentrations of D-amino acid, D-serine (D-Ser), and percentages of dissolved organic carbon (DOC) derived from bacteria. Bacterial contributions to DOC were calculated on the basis of C-normalized yields of D-glutamic acid (D-Glx), D-alanine (D-Ala), and D-aspartic acid (D-Asx)34.