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Fig. 3 | Annals of Forest Science

Fig. 3

From: Potential spread of the pine processionary moth in France: preliminary results from a simulation model and future challenges

Fig. 3

Distribution of the pine processionary moth in France downscaled to 1-km grid resolution for the model implementation: in 1969–1979 (in black; derived from CTGREF-INRA 1980), in winter 2005–2006 (in dark grey) and in winter 2010–2011 (in light grey). The two later distributions were derived from INRA surveys on a 8 × 8-km grid, with a maximum elevation at 1,400 m. Grey dots represent pioneer colonies discovered between 2003 and 2012 (derived from Robinet et al. 2012 and INRA latest surveys)

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Annals of Forest Science

ISSN: 1297-966X