Methods:Sampling:• Rhizon technique (Seeberg-Elverfeldt et al. 2005)SO42-:• Ion chromatography (Metrohm IC Net 2.3)Fe2+:• Ferrozine method (Stookey 1970)NH4+:• spectrophotometrically using a Multiskan
Data: FT-ICR-MS data for dissolved organic matter (DOM) and 16S data Supplementary Data File: transformation of DOM, microbial and DOM co-occurrence networks.
This dataset includes the sediment organic matter content (e.g. content of total organic carbon and nitrogen, carbon to nitrogen ratio) and bottom water temperature from totally 409 sampling sites in