52040506080100200300400450500550600700

Epipelagic

Mesopelagic

Field work Lab work

Sample collection

DOC DIN FC Chla

Glass fiber filter

Flow cytometer (FC)

Total organic carbonanalyzer for dissolvedorganic carbon (DOC)

Filtration manifold forfractionated chlorophyll a

(Chla)

Segmented Flow Analyzerfor inorganic nutrients

(DIN)