Table 1 Trial design for the silviculture and tree breeds trial located at Shellocks Forest Silviculture Seedlot rating Trt.
Strong effects on means for tree-form traits may be associated with amplified expression of genotypic differences (LoE interaction), although there may be extreme combinations of site and silviculture in which tree form is almost uniformly disastrous.
In the northern hardwood forest of northeastern North America, ecological and social perceptions call for forest management systems using reduced-impact silviculture such as single-tree selection cutting and small clearcuts.
A simulation space made up of 500, 20 m × 20 m cells, was created using tree-lists from silviculture systems experiments in north eastern Quebec.
Such information is relevant from a fundamental ecological and an applied silvicultural perspective, given the increased attention for mixed species silviculture and the close linkages between tree architecture and high-quality timber production.
Jean Glavany, the French Minister of Agriculture, whose concern evidently does not extend to silviculture, has just declared that "plane trees lining the roads amount to a public danger," and that they should all be cut down.
The wood of New Zealand-grown coast redwood varies widely in quality, due to the seed source, silviculture, growth and age of the trees, but it can compare favourably with second-growth coast redwood in California (Knowles and Miller [1993]; Cown [2008]; Cown et al. [2013]).
As early as the 1920s, when there was much interest in multi-aged silviculture, scientists recognized that silvicultural systems involving within-stand variation of tree age and size could not be tested effectively on small (<1 ha) plots, and began installing compartment-scale (10 20 ha) trials on many experimental forests throughout the United States.
Next to being ecologically important, e.g., for biodiversity (Moning and Müller 2009), beech is a major economic tree species in European silviculture (Geßler et al. 2007).
Past experience with other needle diseases such as Dothistroma needle blight suggest that such diseases can be managed in the medium-to-long term with tree breeding and appropriate silviculture.
