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. Author manuscript; available in PMC: 2011 Oct 19.
Published in final edited form as: New Phytol. 2006;171(1):105–116. doi: 10.1111/j.1469-8137.2006.01736.x

Fig. 6.

Fig. 6

Mean relative acoustic emission (AE) energy per 10 min (pVs) (a) and relative cumulated AE energy (cumulated AE energy emitted until a defined RWL step related to the total AE energy) (b) at 5% relative water loss steps. Significant differences between juvenile (open symbols, dashed lines; n = 12) and mature (closed symbols, solid lines; n = 12) Norway spruce (Picea abies) beams are marked with * at the corresponding relative water loss if significant at the 0.05 level, with ** if significant at the 0.01 level, and with *** if significant at the 0.001 level. Error bars represent 1 standard error.