Gravels larger than 2mmwere also found in the samples
(KruskaleWallis Chi-squared ¼ 14.07, df ¼ 3, P ¼ 0.003). Significantly
more gravels were observed in CONTROL and LEAF (P > 0.05
between both) than in the WOOD and TREE treatments (P > 0.05
between both).