Article Figures & Data
Figures
- Fig. 1.
Cross-sections through strong-(A) and weak-compartmentalizing (B) red maples; numerals indicate strong Wall 2 and strong Wall 3.
- Fig. 2.
Cross-section of strongly compartmentalized chisel wound in red maple, 3 cm above wound site. Plugged cells interior to the wound (lower uneven border) constitute a strong Wall 2.
- Fig. 3.
Cross-sections of strong-compartmentalizing trees of Tilia americana (A) and Quercus Palustris (B), stained with iodine to illustrate starch depletion (reduced staining) interior to Wall 2.
- Fig. 4.
Cross-sections through re-wounded red maples, stained with iodine. Reduced staining Interior to Wall 2 in strong-compartmentalizing tree (B), but not in weak-compartmentalizing tree (A). Some starch depletion (reduced staining) along Walls 3 In (A). Note that wound-induced wood discoloration from second wounding of weak-compartmentalizing tree (A-lower left) has moved through Wall 4 (see also Fig. 5).
- Fig. 5.
Wood discoloration in red maple following chisel wounding In 1974 (2 wounds) and 1981 (4 wounds). Tree C was a strong compartmentalizer and formed a strong Wall 2 following both woundings. Trees A and B were weak compartmentalizers and discoloration caused by 1981 wounding penetrated through Wall 4 of 1974 wound (A) and completely obliterated the discoloration of one 1974 wound (B).
- Fig. 6.
Wood discoloration and decay in weakcompartmentalizing trees of red maple following chisel wounds in June, 1974 and Increment boring through wound in March, 1983 or 1984. Trees cut December, 1985. Note that width of discoloration In (B) and (D) is more extensive than original wound width. Entire center of section B fell out during sanding. Tree D was bored twice, once through a wound and once through clear wood.
- Fig. 7.
Wood discoloration and decay in strongcompartmentalizing trees of red maple following chisel wounds in June, 1974 and increment boring through wound in March 1983 or 1984. Trees cut December, 1985. Depth of increment core in (A) indicated by black band. Note that width of discoloration caused by increment boring is limited to width of original chisel wounds (1.8 cm). Depth of discoloration in (B) and (C) is limited to depth of increment boring. In (A), where increment boring extended through the pith, discoloration continued out to original (1974) strong Wall 2 on the other side, even though a new, but weak, Wall 2 was built interior to the original Wall 2.
Tables
Clear sapwood Wall 2 Wall 3 Weak 0.58 3.8 4.1 Strong 0.56 13.1 -
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