FIGURE 3.

Color encoding the microbiome compositions of ocean surface water samples. 16S rRNA microbiome composition of surface water samples from the Tara Oceans ¹⁵ sampling stations were encoded as colors using U‐CIE. The resulting colors were mapped onto the geographic locations of the sampling stations (panel a). The blue–yellow (b*) axis correlates with water temperature (panel b), the lightness (L*) correlates positively with temperature dissolved (panel c) and negatively with oxygen concentration (panel d), and the green–red axis (a*) correlates with dissolved nitrite/nitrate concentration (panel e)