Table 3.

Percentage changes of daytime sap flux density (7:00 to 17:00) and stem water content (VWC_stem) between sections and their statistical significance. Also shown is Ψ_pd for selected experimental dates. Significance levels: *** p < 0.001, ** p < 0.01, * p < 0.05, ns not significant.

			HT		CF3		CF4		CF2		PA4		CF5		HC		CP
Section comparison
Sap flux density change [%]	Drought reduction	1:2	−74.7	***	−80.2	***	−86.0	***	−91.4	***	−30.7	***	−89.7	***	−74.4	***	−80.6	***
	Change with deep label	2:3	−6.1	ns	2.2	ns	−5.5	ns	−2.9	ns	−2.3	ns	−26.2	ns	107.0	***	57.2	**
	Change with first rain	2:4	59.2	***	58.6	**	86.4	***	58.3	**	37.2	*	133.4	**	161.1	***	27.5	**
	Change with regular rain	2:5	186.4	***	242.7	***	218.3	***	373.6	***	79.0	***	295.3	***	263.8	***	483.3	***
VWCstem change [%]	Drought reduction	1:2	−22.3	***	−27.4	***	–		−48.6	***	−2.9	**	−37.9	**	−13.1	***	−14.1	***
	Change with deep label	2:3	0.3	ns	7.5	***	–		60.1	***	−0.2	ns	51.5	***	2.3	**	−1.7	ns
	Change with first rain	2:4	1.7	**	13.6	***	–		89.0	***	0.4	ns	55.0	***	2.2	**	−2.3	*
	Change with regular rain	2:5	10.4	***	44.0	***	–		105.0	***	2.5	***	70.3	***	14.2	***	3.6	***
Section
Ψpd [MPa]	Pre-drought	1	−0.5		−0.1		−0.1		−0.1		−0.1		−0.1		−0.1		−0.5
	24.11.2019	2	−1.6		−1.0		−0.9		−0.8		−0.6		−1.5		−0.8		−0.5
	06.12.2019	3	−1.1		−0.4		−0.6		−0.7		−0.3		−0.5		−0.6		−0.4
	13.12.2019	4	−0.7		−0.4		−0.8		−0.4		−0.3		−0.6		−0.4		−0.4
	20.12.2019	5	−0.6		−0.4		−0.5		−0.4		−0.3		−0.3		−0.4		−0.5