Bioavailability of Dissolved Organic Matter Varies with Anthropogenic Landcover in the Upper Mississippi River Basin

Dataset includes changes in dissolved organic carbon (DOC) concentrations and dissolved organic matter (DOM) composition during a 28-day bio incubation from water samples collected in streams of the Upper Mississippi watershed. Streams from different land-uses (forest/wetland; agriculture; urban) were sampled to look at land-use effects on DOM bioavailability. Changes are observed between day 28 (T28) and day 0 (T0). DOC concentrations are expressed as mg C/L and DOM composition is referred as percent relative abundance (% RA). Also includes are the number of assigned formulae, the modified aromaticity index (AImod), and average mass.