. 2017 Jun 30;8:1160. doi: 10.3389/fpls.2017.01160

Table 2.

Summary of the linear mixed models for each morphometric trait (X: Ac, area of the coronal plane; Mu, mass of the uncoated seeds; Mc, mass of the coat; Am, area of the megagametophyte; Ae, area of the embryo) including fire number (left) and tree height (right) as predictors.

		Fire number						Tree height
		Fixed effect		Random effect				Fixed effect			Random effect
		Intercept	X	σ²	τ_00,P	ICC_P	R²	Intercept	X	σ²	τ_00,P	ICC_P	R²
Ac	B	12,875.67	456.91					14,065.04	−63.57
	CI	12,400.57	104.07	6.3e+05	328,067.040	0.340	0.448	13,055.28	149.89	635,792.605	413,595.903	0.394	0.448
		13,350.76	809.75					15,074.80	22.75
	P	<0.001	0.020					<0.001	N.S.
Mu	B	12.35	1.32					16.14	−0.22
	CI	10.69	0.09	5.755	4.101	0.416	0.499	12.78	−0.50	5.755	4.634	0.446	0.499
		4.01	2.55					19.50	0.07
	P	<0.001	0.050					<0.001	N.S.
Mc	B	6.14	0.27					6.90	−0.04
	CI	5.48	0.22	1.179	0.623	0.346	0.381	5.64	−0.15	1.179	0.644	0.353	0.381
		6.79	0.75					8.17	0.06
	P	<0.001	N.S.					<0.001	N.S.
Am	B	4,194,885.83	91,088.68					4,411,950.47	−10,861.92
	CI	3,816,414.51	189,999.32	3.48e+11	2.10e+11	0.377	0.405	3,683,511.80	−73,131.5	3.48e+11	2.14e+11	0.382	0.405
		45,73357.14	372,176.68					5,140,389.14	51,407.6
	P	<0.001	N.S.					<0.001	N.S.
Ae	B	822,495.60	35,547.96					942,648.35	−7,439.31
	CI	718,117.20	41,974.54	2.24e+10	1.62e+10	0.419	0.453	743,061.89	−24,501.4	2.24e+10	1.62e+10	0.421	0.453
		926,874.00	113,070.47					1,142,234.80	9,622.8
	P	<0.001	N.S.					<0.001	N.S.

B, coefficient value; CI, 95% confidence interval (upper and lower values represent the lower and upper limit, respectively); P, P-value; σ², within-group (residual) variance; τ_{00, P}, between-group-variance; ICC_p, intraclass correlation coefficient; R², coefficient of determination.