Height/age data recorded from tree stem analysis can be biased if the height of the cross-cut is taken as the tree height for a given age, because of the presence of a #x201C;hidden tip#x201D; above the cross-cut. Six published algorithms for estimating the true height within stem-analyzed sections were compared by locating the position of the growing tip in 30 karri regrowth logs. Uncorrected data significantly (P 0.05) underestimated the length of the hidden tip within a stem section by up to 2 metres, whilst methods proposed by Carmean (1972) and Lenhart (1972) produced unbiased, accurate tree heights. Either of these algorithms appear suitable for karri stem analysis data.
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