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Table 7 Presence of exudates, mean values, and standard error (SE) of maximum vessel length (MVL, cm) and branch diameter calculated as the average diameter at both ends (mm; including bark) as well as the number of individual replicates for 25 canopy-tree species sampled in French Guiana. Species with MVL > 100 cm were excluded from the sample for measurements of branch resistance to embolism, with the exception of Eperua falcata, Goupia glabra, and Licania membranacea for which we sampled smaller diameter branches, since branch diameter and MVL were positively related (Jacobsen et al. 2012; this study). Results of a one-way ANOVA test for species effect for each studied trait are shown. Mean ± SE, F, and P values are displayed. Only species with at least three measured individuals are included in the analyses

From: Large hydraulic safety margins protect Neotropical canopy rainforest tree species against hydraulic failure during drought

Species

Exudates

MVL

Diameter

n

Bp

-

61.3 ± 1.5

15.3 ± 0.4

6

Csch

-

42.1 ± 2.5

14.3 ± 0.4

10

Csan

Yes

24.1 ± 2.1

15.4 ± 0.7

9

Dg

-

60.0 ± 3.5

15.9 ± 0.6

10

Ef

-

140.5 ± 3.5

19.4 ± 0.6

7

Eg

-

92.8 ± 2.6

17.6 ± 0.7

9

Ec

-

30.0

14.8

1

Es

-

29.4 ± 1.5

14.2 ± 0.9

7

Gg

-

111.5 ± 3.4

16.3 ± 0.8

7

Gh

-

40.1 ± 1.8

14.1 ± 0.5

6

Is

Yes

57.0

15.6

1

Lper

-

49.2 ± 1.7

14.0 ± 0.4

5

Lpoi

-

52.3 ± 3.6

14.3 ± 0.5

8

Lm

-

111.0 ± 3.4

15.9 ± 0.6

13

Mb

Yes

72.6 ± 4.3

16.0 ± 0.6

9

Mc

Yes

71.0

13.6

1

Pc

Yes

44.9 ± 2.0

14.0 ± 0.4

10

Po

-

51.7 ± 1.9

13.9 ± 0.3

5

Psub

-

54.8 ± 3.7

15 ± 0.5

4

Qr

-

49.4 ± 2.2

15.5 ± 0.7

7

Rs

-

93.2 ± 1.7

17.2 ± 0.6

5

Sg

Yes

67.7 ± 3.3

13.4 ± 0.4

5

Tm

-

75.7 ± 3.1

17.3 ± 0.4

5

Vm

Yes

39.6 ± 2.1

14.5 ± 0.7

6

All

 

62.2 ± 5.8

15.3 ± 0.3

-

F test

 

10.6

2.8

-

p value

 

< 0.001

< 0.001

-