Figure 3: EEM-PARAFAC components of Synechococcus and marine FDOM.

EEM-PARAFAC three-component model of SPE-DOM of (a–c) a Synechococcus culture (CB0101) collected from a 15 days’ growth experiment (SYN1–3) and (d–f) a marine SPE-DOM (BATS1–3) collected at every 200 m depth between surface and 4,530 m at the BATS.