Figure 1

Actual denitrification rates (ra) in mountain lake sediments by habitat. Letters over each box indicate significant differences between habitats (Kruskal-Wallace test, p < 0.001, followed by pair-wise Mann-Whitney tests between habitats p < 0.05). Boxplots depict the interquartile range (box), median value (line), 1.5 x interquartile (whiskers), and outliers (points).