We examine DOM biogeochemistry in the Marmara Sea–Dardanelles Straits–N. Aegean Sea.
High BP rates in the Marmara Sea resulted in the consumption of the bioavailable DOM.
PARAFAC modeling of EEMs revealed terrigenous humic-like and peptide components.
Allochthonous DOM enters N. Aegean where bacteria mineralize DON more effectively than DOC.
Deep mineralization processes in the Marmara seem to be dependent on POM.