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Fig. 2 | Annals of Forest Science

Fig. 2

From: Persisting bark beetle outbreak indicates the unsustainability of secondary Norway spruce forests: case study from Central Europe

Fig. 2

Development of I. typographus outbreak (as indicated by volume of felled infested trees and as represented by the bars) during the outbreak period of 1991–2005 in relation to Ips typographus dispersal (as indicated by the percentage of felled trees in year y within 1,350 m from the centre of compartments with reported felling in year y − 1 relative to the total amount of felling in the region) during the period 1999–2004

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Annals of Forest Science

ISSN: 1297-966X