FIGURE 2.

Coccolith coverage in Emiliania huxleyi is not affected by microbial interactions. Comparison of the calcified cell portion in axenic algal cultures (“Alg”) and co‐cultures (“Co”) at different time points. Both axenic cultures and co‐cultures exhibit similar coccolith coverage at each time point. Data were collected from biological duplicates. Slight differences between samples were statistically insignificant as assessed by independent two‐sample t test, assuming unequal variances with a significance level of α = 0.05. *Algal death in co‐cultures occurred before day 15; therefore, algal cells were not counted