using silvicultural treatments to control browsing levels of western red cedar on vancouver island (thuja plicata)
abstract
the forest practices code of british columbia act requires forest tree farm
licence (tfl) holders and timber supply area (tsa) to have a sensible silviculture
prescription that ensures licensees to replace harvested trees with the suited tree species,
stocking and specified free growing requirements to create a desired stand (government
of british columbia 2000). high amounts of ungulate browsing cause tfl and tsa
holders to deploy individual tree guards which can result in large costs and stunted
growth. to get seedlings to free to grow status, the ministry of forests, lands & natural
resource operations cowichan lake research station have established a study on
browse resistant western red cedar. this thesis studies the height growth and browse
levels on newly planted, browse resistant western red cedar in the north region of
vancouver island. data collected was analyzed using a two-sample t-test assuming
equal variances to compare the height and browse levels between non-resistant and
resistant treatments. all browse resistant treatments except for one concluded to be
significant. findings from this study highlight how new browse resistant species can
eliminate the high costs and need for individual tree guards
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- undergraduate theses [325]