"2" . . "AMSDIIP6" . "Measurements made by isotope-doped incubation experiment followed by mass spectrometric analysis of particulates collected on each filter of a filter cascade down to a GF/F filter. Data stored is the sum of the size-fractionated values." . "2" . . "NH4upt_sum>GFF_SD" . "AMSDIIP6" . "AMSDIIP6" . "06-JUL-15" . "Uptake rate standard deviation (daily) of ammonium {NH4+} per unit time per unit volume of the water body [particulate >GF/F phase] by isotope-labelled tracer addition, incubation at unspecified light level, cascade filtration and mass spectrometry on residue"@en . "accepted" .