Skip to main content

Table 4 Summary of the linear mixed-effects models of below-crown stem pressure difference (ΔPbc) and below-crown hydraulic resistance (rbc) as a function of soil water content (SWC), vapour pressure deficit (VPD) and defoliation class

From: Below-ground hydraulic constraints during drought-induced decline in Scots pine

 

log(ΔPbc)

log(rbc)

R2(m,c) = 0.28, 0.81

R2(m,c) = 0.29, 0.85

Intercept

− 3.02 ± 0.56***

− 16.2 ± 0.51***

Non-defoliated

− 2.33 ± 0.59**

− 1.99 ± 0.74*

Log(SWC)

− 0.15 ± 0.23 (ns)

− 1.77 ± 0.13***

VPD

1.94 ± 0.42***

ni

VPD2

− 0.18 ± 0.08*

ni

Non-defoliated: log(SWC)

− 0.69 ± 0.18***

− 0.81 ± 0.20***

Log(SWC): VPD

0.63 ± 0.22**

ni

  1. For factors, the coefficients indicate the difference between each level of a given variable and its reference level. In models, the reference defoliation class was ‘defoliated’. The values depicted are estimates ± SE. R2(m,c) refer to marginal and conditional R2 values, respectively
  2. ns no significant differences, ni not included in the model
  3. *0.01 < P < 0.05; **0.001 < P < 0.01; ***P < 0.001
Back to article page

Annals of Forest Science

ISSN: 1297-966X