Fig. 8
Gene- and fluorescence-based biomarkers for four additional CTD casts conducted during the NA-VICE cruise. a, b Box-and-whisker plots showing E. huxleyi cell abundance (cells ml−1) and EhV-derived MCP gene copies E. huxleyi cell−1 for these casts at three depths where E. huxleyi were present in highest abundance. c–e Box-and-whisker plots showing corresponding DAF-FM DA, CM-H2DCFDA, and SYTOX Green fluorescence for these casts. Data are an average of two replicates per depth. For all box plots, upper and lower bounds of the box represent the 25% and 75% quartiles around the median. Vertical lines extend to data points no greater than 1.5 times the inter-quartile range. Statistically significant differences were determined using one-way ANOVA with the Tukey HSD post hoc test (letters denote statistically different subgroups, p < 0.05)
