Table 2. Influence of earthworm density on earthworm attraction in the four-arm olfactometer.

	Earthworms density
	5 earthworms	10 earthworms	20 earthworms	40 earthworms	80 earthworms	160 earthworms
G. candidum	49	83	92	326	528	1536
Control 1	5	19	45	64	156	202
Control 2	11	18	47	60	127	169
Control 3	3	15	36	55	126	138
χ2	82.35	96.08	34.44	421.7	493.63	2742.69
p-value	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001

Total earthworm number across all replicates is given in the table.