Publication Date:
1993-01-01
Description:
This study measured the incidence of feeding damage in 1989 and 1990 by black bears (Ursusamericanus Pallas), and possibly by grizzly bears (Ursusarctos L.), within managed and unmanaged second-growth western hemlock (Tsugaheterophylla (Raf.) Sarg.)–western red cedar (Thujaplicata Donn) forest stands near Jennis Bay, 39 km northwest of Port Hardy, British Columbia. Tree mensuration (1989) and damage assessments (1989 and 1990) were conducted in 69 sample plots located in stands that were spaced in 1980 to 1982, when the trees were juvenile, and in 19 plots located in a nearby unspaced (control) stand. Western red cedar, which represented 13.6% of the managed stands, was the most severely damaged species (cumulative attack of 63.8% in 1989, increasing to 69.1% in 1990). Western hemlock, the major tree species, had
Print ISSN:
0045-5067
Electronic ISSN:
1208-6037
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
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