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. 2015 Jul 20;10(7):e0133526. doi: 10.1371/journal.pone.0133526

Fig 1. Physicochemical zonation and rates of microbial respiration in the OMZs off Namibia and Peru.

Fig 1

(a-c) Namibian shelf (station 252, 111m). (d-f) Peruvian coastal OMZ (station 807, 115 m). (g-i) Offshore Peruvian OMZ (station 3, 4697 m). Dashed lines indicate the upper OMZ boundary (O2 ≤15 μmol l-1). Previously determined rates of aerobic and anaerobic NH4 + oxidation [14,24,25] are tenfold magnified. Please note the differences in scale between stations. *Chlorophyll a concentrations in panel b in relative units.