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Fig. 9 | Annals of Forest Science

Fig. 9

From: Survival of Douglas-fir provenances in Austria: site-specific late and early frost events are more important than provenance origin

Fig. 9

Early and late frost events in Pötsching (47.763°N, 16.359°E) in East of Austria which experiences strong continental conditions. During the inventory period covering 1973 to 1975, the site experiences on late 16th of May 1973 where minimum temperature drops from 12 to − 2.5 °C on a single day and an early frost event on 30 Sep where minimum temperature drops from 8 to − 1.2 °C. Early (May–June) and late frost (July-Sep) are marked in blue and gray boxes, respectively. ★ Represents frost events during spring and autumn

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Annals of Forest Science

ISSN: 1297-966X