Fig. 6: Diatom abundance and environmental context of sexual signals during the Tara Oceans expedition.
From: Conserved genetic markers reveal widespread diatom sexual reproduction in the global ocean
a Violin plots and boxplots showing the distribution of 18S rDNA abundance (V4 and V9 regions) of different genera in the Tara Oceans samples relative to the total diatom abundance. For each genus, the abundance across all Tara samples (blue) is compared with the abundance across samples for which the genus showed a sex signal (red). Stars indicate significant differences (two-sided Mann-Whitney U-test with Bonferroni correction, p < 0.05). The number of samples is shown above each violin plot. The central line of the boxplot indicates the median, the box limits show the 25th and 75th percentiles and whiskers extend up to 1.5× the interquartile range. b Chlorophyll a concentration (mg/m3) and seasonal information, when available, across Tara Oceans stations in surface (top) and Deep Chlorophyll Maximum (bottom) (N = 137). Triangles indicate stations where we detected sexual reproduction signals, while circles indicate the other Tara Oceans stations. Colors indicate the season of sampling, while the size of each shape represents chlorophyll a concentration (mg/m3).
