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Fig. 4 | Annals of Forest Science

Fig. 4

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

Fig. 4

Mean BAI chronology of a population of silver firs (gray; N = 227), sub-samples with bark beetles (dotted line; N = 12), and sub-samples without bark beetles (black; N = 36) during the last 60 years (1950 to 2010) on a contour line transect on Mont-Ventoux, France. The values of means (mm2/year) ± standard errors were: population = 904 ± 21.8; sub-samples with bark beetles = 731 ± 23.8; sub-samples without bark beetles = 850 ± 25.2

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Annals of Forest Science

ISSN: 1297-966X