Table 4. F values and significance levels from ANOVA of root metrics.

See Table 1 for the definition of variables.

Source	d.f.	D	RNO	L	RSA
Treatment	3	181.67***	21.27***	122.54***	38.22 ***
Sediment	1	27.38***	16.47***	88.57***	81.96 ***
Treatment × Sediment	3	8.08***	29.57***	18.33***	2.28
Time	4	115.30***	357.26***	255.50***	133.77 ***
Treatment × Time	12	10.63***	25.61***	15.11***	9.75 ***
Sediment × Time	4	2.79*	3.93 *	12.90***	5.71 *
Treatment × Sediment × Time	12	1.82*	8.51***	7.53***	4.28 *

* p ≤ 0.05.

*** p ≤ 0.001.