Fig. 1: Cruise tracks and environmental context.
From: Minor contribution of ammonia oxidizers to inorganic carbon fixation in the ocean
a, Station map of cruises RR2104 (green) and AT50-10 (orange). Bathymetry data from ref. 58. b, Ammonia oxidation rates, chlorophyll a fluorescence (FL) and ammonium (NH4+) and nitrite (NO2−) concentrations at eight stations during cruises AT50-10 and RR2104. NO2− concentrations were not measured at Stn 15. For ammonia oxidation rates, the mean and s.d. (error bars) of three biological replicates are shown (b.d., below the calculated detection limit of the method). Note that the error bars for ammonia oxidation rates are often smaller than the symbols. The depth of the euphotic zone is indicated by the grey dashed horizontal lines.
