Abstract
lected in 74 forest inventory plots. Significant differences were tested by means of the Mann‐Whitney U-test. A partialredundancyanalysiswasconductedtoassesstherelativecontributionofbothenvironmentalandmanagement variables in explaining differences in thecurrent structure of old-growth and managed stands.Additionally, 25 trees of different size (range 25.4‐98 cm) and age (67‐803 years) were cored and dendrochronological methods and bootstrap linear regression were used to study the effects of size and age on tree growth. The oldgrowth stand exhibited a higher density of large trees (diameter at breast height .50 cm) and greater variability intreesizethanmanagedstands,butlowertreedensityand,consequently,similarvaluesofstandbasalareaand volume.Environmentalvariablesaccountedfor5.7percentofthetotalvarianceobservedinstructuralattributes, while the contrasting silvicultural condition (old-growth vs managed) accounted for 10.2 per cent. Growth, measured in units of stand basal area, increased continuously with tree size.
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