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Table 1 Characteristics and growth slopes (BAI slopes from 2003 to 2008) of silver firs sampled for mistletoe and bark beetles on Mont-Ventoux, France

From: Individual vulnerability factors of Silver fir (Abies alba Mill.) to parasitism by two contrasting biotic agents: mistletoe (Viscum album L. ssp. abietis) and bark beetles (Coleoptera: Curculionidae: Scolytinae) during a decline process

 

n

Height (m)

Diameter (cm)

Age

BAI slope

Population

227

14.7 ± 2.80

31.3 ± 10.1

93 ± 35

−0.000113 ± 0.0278

Mistletoe

With mistletoe

12

15.0 ± 3.89

32.2 ± 12.7

80 ± 35

0.00108 ± 0.00422

Without mistletoe

8

13.7 ± 2.59

25.5 ± 9.23

85 ± 38

−0.0000432 ± 0.00872

Total

20

14.6 ± 3.53

30.2 ± 11.9

81 ± 35

0.000745 ± 0.00570

Bark beetles

With bark beetles

12

14.0 ± 3.12

28.8 ± 11.6

89 ± 33

−0.00780 ± 0.0427

Without bark beetles

36

14.6 ± 2.40

31.1 ± 8.65

94 ± 38

0.0184 ± 0.0603

Total

48

14.5 ± 2.54

30.6 ± 9.27

93 ± 37

0.0125 ± 0.0575

  1. The values are the means ± standard deviation
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Annals of Forest Science

ISSN: 1297-966X