Article Figures & Data
Figures
- Figure 1.
Acoustic stress wave being sent by a hammer tap to the sonic tomograph sensor array, later processed by the interface box and sent to a computer. Photograph courtesy of Matthew Sauvarin.
- Figure 2.
(a) An original Picus image using eight sensors for tree #32. Image was solid brown with lighter brown areas. (b) The image after analysis with ImageJ. The red areas of interest were converted to white with Adobe Photoshop CS2 version 9.0.2. White is putative decay.
- Figure 3.
(a) The Resi graph trace for tree #32 with putative decay marked on the trace. (b) Resi method diagram for tree #32. Putative decayed areas are shaded. The trees were renumbered during the study.
- Figure 4.
(a) A cross-section used for estimating the percentage of wood decay in a tree according to the visual method used in this study. (b) The needle probe used as part of the visual method. Tree shown is tree #32, as the trees were renumbered after initial data collection. This tree was calculated as having 0.32% decay using the visual method of decay estimation.
- Figure 5.
(a) The percentage of decay using the Picus system versus the whole tree wood density in kg/m3, excluding tree #24. Tree #24 is an outlying data point in the Picus system data set; therefore, 35 Eucalyptus saligna trees are included in this data set. (b) The percentage of decay using the Picus system versus the whole tree wood density in kg/m3. These data exclude trees less than or equal to 200 mm in diameter at 0.3 m in height, that is trees #17, #19, #24, #25, #31, and #34. Therefore 30 Eucalyptus saligna trees are included in this data set.
- Figure 6.
(a) The percentage of decay using the Resi system versus whole tree wood density in kg/m3. Includes all 36 Eucalyptus saligna trees. Trend line = logarithmic regression, P = 0.0027, r2 = 0.2354. (b) The percentage of decay using the Resi system versus the whole tree wood density in kg/m3. These data exclude the smaller trees #17, #19, #24, #25, #31, and #34; therefore, 30 Eucalyptus saligna trees are included in this data set. Trend line = logarithmic regression, P = 0.0015, r2 = 0.3061.
- Figure 7.
(a) The percentage of decay using the visual method versus the whole tree wood density in kg/m3. Includes all 36 Eucalyptus saligna trees. (b) The percentage of decay using the visual method versus the whole tree wood density in kg/m3. These data exclude smaller trees; trees #17, #19, #24, #25, #31, and #34 are excluded. Therefore, 30 Eucalyptus saligna trees are included in this data set.
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