Table 1.

Parameter estimates for the fixed effects in a linear mixed model of the variables influencing CH₄ flux; n = 51, R² _LMM(m) = 0.60, R² _LMM(c) = 0.77. Bonferroni adjusted p values are displayed

Parameter	Estimate	SE	df	t	p
Intercept	3.750942	0.525874	28	7.132776	<0.001
GPP	19.017379	4.478884	28	4.246008	0.011
Water table depth	0.170248	0.043746	28	3.891735	0.032
Soil temperature at 9–11 cm depth	0.153864	0.165532	28	0.929509	1.000
pH	−0.388229	0.781263	28	−0.496925	1.000
pH2	−1.585871	0.588373	28	−2.695347	0.637
Water table depth* Soil temperature at 9–11 cm depth	0.067599	0.015570	28	4.341595	0.011