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Table 2 Sample sizes, range of stem diameters, mean diameter, and mean relative bark thickness (BT) for individuals <10 cm diameter at breast height (DBH). Because fire resistance scales as the square of bark thickness (BT2), we calculated the bark thickness and the square of bark thickness for a 5 cm DBH individual of each species. Species are in order of their location along the pocosin-to-savanna gradient.

From: Relative Bark Thickness is Correlated with Tree Species Distributions along a Fire Frequency Gradient

       

For 5 cm DBH stem

  

Species

N

Diameter range (cm)

Mean diameter (cm)

Mean relative BT (%)

BT (mm)

BT2 (mm2)

Habitat

Pocosin

Acer rubrum

21

0.78 to 9.69

4.44

8.51

2.13

4.53

Nyssa biflora

13

2.07 to 9.41

5.09

12.61

3.15

9.94

Liriodendron tulipifera

16

0.77 to 9.53

4.79

13.29

3.32

11.04

Quercus nigra

12

0.95 to 9.68

4.84

12.88

3.22

10.34

Pinus serotina

12

1.87 to 9.89

6.29

23.60

5.90

34.81

Liquidambar styraciflua

18

1.05 to 9.11

4.74

18.88

4.72

22.28

Savanna

Pinus palustris

12

1.79 to 9.25

5.45

28.76

7.19

51.70

Quercus marilandica

15

0.85 to 9.11

4.88

27.18

6.80

46.17

Quercus laevis

20

1.18 to 9.15

5.07

25.47

6.37

40.55

Quercus margarettae

22

1.18 to 7.78

4.22

23.24

5.81

33.76

Quercus incana

19

0.74 to 8.70

4.48

25.94

6.49

42.06