Estimation of tree ages from growth rings of eucalypts in northern Australia

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Abstract
Stem girth measurements taken monthly for two years on trees of Eucalyptus tetrodonta, E. miniata and E. nesophila growing in open forests of northern Australia, in a tropical monsoon climate, showed that diameter growth in these species was regularly confined to the annual wet season. The stem wood of these trees exhibited growth rings, and, although the identification of the annual growth was not easy, it was concluded that a tentative assessment of approximate tree ages from ring counts is feasible, at least for trees protected from fire.