Table 3.

Results of the Mann-Whitney U-test

Tested groups (m from trail)		Litter		Soil and rock
		Z	P	Z	P
0.5	2	-3.02	0.03	-2.73	0.006
0.5	5	-3.04	0.002	-3.42	0.001
2	5	-1.77	0.076	-1.3	0.19