On Thu, 17 Nov 1994 KSTEIN@smokey.forestry.uga.edu wrote: > The discussion of how very young seedlings perceive competition from > their peers when apparently no physical contact exists among them is > fascinating. Research in this direction may finally shed some light > on another long standing, similar puzzle: Why do seedlings planted as > replacements for first growing season mortality in both hardwood > and pine plantations not catch up with the originals? Here, too, no > physical contact seems possible in the first year or more, yet the > replacements are easily recognized a decade later. In New Zealand, on fertile sites, seedlings that are a year younger never have a chance against their neighbours. Initial growth follows exponential functions, and the "blanked" seedlings have one year less of foliage creation and root growth. Regards, Euan ================================================================== Dr Euan G. Mason Silviculture, Modelling and Lecturer in Silviculture Decision-support systems School of Forestry University of Canterbury New Zealand's professional Christchurch, New Zealand Forestry School ==================================================================
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