Table 2 Vulnerability to xylem embolism, represented by xylem pressure at 50% loss of hydraulic conductivity (P50), slope of the vulnerability curve (S), and percentage loss of hydraulic conductivity corresponding to midday leaf water potential during the dry season (PLCdry) of selected dominant tree species from different successions in Khao Yai National Park, Thailand. For a given species, values are means ± one standard error of 3 sampled branches that we used to generate the vulnerability curve separately. For each successional stage, values presented are averaged from the selected dominant tree species with one standard error (n = 15). Different upper- and lower-case letters represent significant differences among the forest successions and within each forest succession, respectively (One-way ANOVA with Tukey’s post-hoc test, significance level of 0.05).

From: Variations in leaf water status and drought tolerance of dominant tree species growing in multi-aged tropical forests in Thailand

Tree species

P50 (MPa)

S (% MPa−1)

PLCdry (%)

Old-growth forest (OF)

− 2.87 ± 0.30 A

73.70 ± 21.60 A

4.61 ± 0.97 A

Dipterocarpus gracilis

− 0.89 ± 0.01 d

222.56 ± 45.72 b

3.06 ± 2.22 a

Sloanea sigun

− 2.55 ± 0.21 c

43.83 ± 10.92 a

7.10 ± 3.32 a

Ilex chevalieri

− 4.17 ± 0.08 a

41.09 ± 11.49 a

2.00 ± 1.36 a

Symplocos cochinchinensis

− 3.27 ± 0.04 b

33.34 ± 2.73 a

3.21 ± 0.94 a

Schima wallichii

− 3.46 ± 0.08 b

27.81 ± 2.17 a

7.69 ± 0.85 a

Intermediate forest (IF)

− 3.04 ± 0.18 A

26.80 ± 1.25 B

12.90 ± 2.14 AB

Schima wallichii

− 3.01 ± 0.05 bc

23.58 ± 0.17 a

11.85 ± 0.37 ab

Machilus gamblei

− 2.46 ± 0.34 c

24.36 ± 1.96 a

25.51 ± 3.94 c

Eurya acuminate

− 4.01 ± 0.10 a

24.44 ± 1.59 a

9.57 ± 1.90 ab

Symplocos cochinchinensis

− 3.39 ± 0.03 ab

34.35 ± 2.45 b

2.88 ± 0.69 a

Syzygium nervosum

− 2.30 ± 0.17 c

27.22 ± 1.61 ab

14.50 ± 1.94 b

Young forest (YF)

− 3.71 ± 0.39 A

23.40 ± 1.05 B

18.40 ± 4.93 B

Cratoxylum cochinchinense

− 2.39 ± 0.24 d

20.73 ± 2.63 a

52.89 ± 4.51 d

Syzygium antisepticum

− 4.71 ± 0.08 b

20.74 ± 0.44 a

6.51 ± 0.72 ab

Adinandra integerrima

− 5.97 ± 0.06 a

24.44 ± 1.26 ab

1.43 ± 0.24 a

Syzygium nervosum

− 2.24 ± 0.03 d

29.05 ± 1.64 b

12.68 ± 0.92 bc

Symplocos cochinchinensis

− 3.24 ± 0.21 c

21.87 ± 1.54 ab

18.25 ± 1.54 c

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