Figure 5
From: Low diversity of planktonic bacteria in the tropical ocean
Relationship between alpha diversity and bacterial cell numbers.
OTU richness (S) and bacterial evenness (J‘) were correlated with cell numbers (cells/ml) for the depths above 100 m. Spearman rank correlation with 999 permutations was calculated. Significance level (**p < 0.01, *p < 0.05 and ns p > 0.05) and Rho values (ρ) are shown on the chart area. (a) Correlation for the three separated communities: FL, SPA and LPA between OTU richness (S) and cell numbers (cells/ml). (c) Correlation for the three separated communities: FL, SPA and LPA between OTU evenness (J‘) and cell numbers (cells/ml). Grey shading shows 95% confidence intervals for Spearman rank correlation. Red circles show data for depths >100 m. Here, cell numbers were low and had no correlation with diversity.
