Table 4.

Summary of Repeated Measures Analysis of Variance (rmANOVA) for the monthly means of soil CO₂ fluxes, soil temperature, and soil moisture.

Source	Soil CO2 flux			Soil temperature			Soil moisture
Between-subject	df	F	P	df	F	P	df	F	P
Trenching	1, 24	19.97	0.0002	1, 24	0.02	0.8813	1, 24	21.43	<0.0001
Leaf litter input	2, 24	29.35	<0.0001	2, 24	0.52	0.6001	2, 24	1.41	0.2634
Trenching*Leaf litter input	2, 24	0.22	0.8061	2, 24	0.99	0.3842	2, 24	0.06	0.9386
Within-subject	df	F	P	df	F	P	df	F	P
Date	29, 696	152.47	<0.0001	26, 624	1045.36	<0.0001	29, 696	42.52	<0.0001
Date*Trenching	29, 696	2.08	0.0008	26, 624	0.60	0.9416	29, 696	6.07	<0.0001
Date*Leaf litter input	58, 696	4.14	<0.0001	52, 624	1.01	0.4613	58, 696	0.65	0.9783
Date*Trenching*Leaf litter input	58, 696	0.96	0.5684	52, 624	0.12	1.0000	58, 696	0.67	0.9699

df = degrees of freedom of the numerator and denominator, respectively. F = Value of the F statistic, according to unadjusted univariate F-tests for contrasts within subjects. P = Critical probability of the analysis.