Fig. 5: Bulk cellular abundances of Prochlorococcus and heterotrophic bacteria.
From: Seasonal enhancement of the viral shunt catalyzes a subsurface oxygen maximum in the Sargasso Sea
Each circle is an independent water sample (a biological replicate) collected at 8 am or 8 pm at each of the 4 depths across the cruise (SRF n = 10, BML n = 6, SOM n = 14, DCM n = 10), and the abundances were measured using flow cytometry. Depth layers sampled are surface, defined as 5 m (SRF), base of mixed layer (BML) defined by a change in potential density of 0.125 kg/m3 from a reference pressure of 10 db, the subsurface oxygen maximum (SOM) depth, and the deep chlorophyll maximum (DCM). a Abundance of Prochlorococcus cells. b Abundance of heterotrophic bacterial cells. In the boxplots, the center line indicates the median, the box edges represent the 25th (lower, quartile 1) and 75th (upper, quartile 3) percentiles, and the whiskers extend to the smallest and largest values within 1.5 times the interquartile range below quartile 1 and above quartile 3, respectively.
