Figures & data
Table 1. Overview of harvested trees.
Figure 1. Cross-section of a Norway spruce (group No. 3) were the sapwood was completely blue-stained at the time of felling.
![Figure 1. Cross-section of a Norway spruce (group No. 3) were the sapwood was completely blue-stained at the time of felling.](/cms/asset/ea5b4b97-6c45-4154-ba83-2998491567b2/swoo_a_2226644_f0001_oc.jpg)
Table 2. The number of specimens used for testing the different material properties.
Figure 2. Hyphae of blue-staining fungi (orange arrow) and wood-degrading fungi (blue arrows) in tracheids of bark beetle infested spruce sapwood.
![Figure 2. Hyphae of blue-staining fungi (orange arrow) and wood-degrading fungi (blue arrows) in tracheids of bark beetle infested spruce sapwood.](/cms/asset/041221b4-93b6-4d69-b7e1-adb11a798d39/swoo_a_2226644_f0002_oc.jpg)
Figure 5. Examples of fractured surfaces after impact bending: fibrous, non-brittle (green coloured frame) and brittle (red coloured frame) in the tensile zone.
![Figure 5. Examples of fractured surfaces after impact bending: fibrous, non-brittle (green coloured frame) and brittle (red coloured frame) in the tensile zone.](/cms/asset/e3bdf3d6-33dd-4d87-b57a-08fa038b5b53/swoo_a_2226644_f0005_oc.jpg)
Figure 8. Force-deflection graph; representative example of a ductile (non-brittle) and a brittle fracture behaviour of blue-stained specimen of group No. 3.
![Figure 8. Force-deflection graph; representative example of a ductile (non-brittle) and a brittle fracture behaviour of blue-stained specimen of group No. 3.](/cms/asset/7d4c27ef-dc99-422c-ac67-7225b2ff9d68/swoo_a_2226644_f0008_oc.jpg)
Figure 9. Fracture pattern of blue-stained samples after 3-P-Bending; a) fibrous fracture pattern in the tensile zone, b) plane fracture pattern across the entire fractured surface.
![Figure 9. Fracture pattern of blue-stained samples after 3-P-Bending; a) fibrous fracture pattern in the tensile zone, b) plane fracture pattern across the entire fractured surface.](/cms/asset/b838f1fb-2153-4066-88de-7dfe54497ff3/swoo_a_2226644_f0009_oc.jpg)
Table 3. Mechanical properties of Norway spruce determined at a MC of 12%. Grey shaded cells indicate significantly lower values to the control. Statistical data are given in the Supplementary information Table A1.