Figure 4: Nutrient enrichment increases the abundance of specific taxa.

Significantly different OTUs in the potentially active communities between fertilized (red) and reference (blue) sediments present at least 100 times assessed by a Kruskal–Wallis test (Bonferroni corrected P<0.0001). The class of each OTU is indicated by the coloured circle. More taxonomic information about each OTU can be found in Supplementary Table 1. Points are the mean and error bars are s.e.m.