Changes in Denitrification Potentials and Riverbank Soil Bacterial Structures along Shibetsu River, Japan

Figure 1

Denitrification potentials for the topsoils (0–15 cm) and subsoils (15–30 cm). Small letters define significant differences among three substrate treatments (“control,” “with N,” and “with C and N”), for each sampling site (A–H), for the topsoils. For the subsoils, the small letters define significant differences among the different sites. The error bars were standard deviations (n = 3). (a) Topsoil and (b) subsoil n.s. = not significant, ^∗ = , ^∗∗ = , ^∗∗∗ = .

(a)

(b)