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Fig. 2 | Forest Ecosystems

Fig. 2

From: Tapping the tree-ring archive for studying effects of resin extraction on the growth and climate sensitivity of Scots pine

Fig. 2

Raw tree-ring chronologies for resin-tapped (black line) and non-tapped Scots pine stands (gray line) in (a) Kratzeburg and (b) Gollin, displayed from 1900 on. Gray shaded areas indicate 30-year periods before and after resin extraction took place. Growth performance of resin-tapped and non-tapped trees was compared for both periods using t-tests; asterisks denote significant (*P < 0.05) and n.s. non-significant differences

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