highly significantp <0.001
Results We found highly significant differences between the rings, i.e. distance of particle transport (F 1 = 14.29, p <0.001), particles, i.e. biochar types (F 1 = 36.73, p < 0.001) and a significant interaction term for ring and particle (F 1 = 2.51, p = 0.03) (see Table 1 ).