Figure 1 | Scientific Reports

Figure 1

From: Investigating the microbial ecology of coastal hotspots of marine nitrogen fixation in the western North Atlantic

Figure 1

NCP and N2 fixation rates. (a) Map of O2/Ar-based volumetric NCP rates measured via EIMS across the Western North Atlantic in July–August 201536, 2016, and 201737. Positive rates are represented by the warm portion of the color scale, while negative rates are indicated using a cool color scale. Balanced NCP rates are shown in greyscale tones. Sites of molecular sampling are displayed by open circles. (b) Map of surface daily N2 fixation rates measured using the FARACAS method22,37. Sites of molecular sampling are displayed by open circles, with selected sites labeled. Greyscale points indicate sites at which N2 fixation rates were below the limit of detection for the FARACAS method (0.19 µmol N m-3 day-1). Inset plot illustrates cruise tracks and directions of travel, color-coded for each year of sampling. Plots created using Matlab 2018b (https://www.mathworks.com/products/matlab.html).

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