Report on Forest Pest Conditions, Queen Charlotte Islands, British ColumbiaCanadian Forest Service, Pacific Forestry Centre, 2001 - Forest health |
Other editions - View all
Common terms and phrases
50 trees/site 57-B Spaced aerial surveys Alliford Bay sites Bay on Moresby branch samples British Columbia budworm and hemlock caused by blackheaded crown thirds Cumulative mean current defoliation damage appraisal sites dead tops dead trees defoliated by blackheaded Defoliation in 2000 defoliation mapped defoliation occurred defoliation on regenerating defoliation recorded defoliation was recorded egg densities Graham Island grey areas Grey trees Ground surveys hemlock sawfly infested spruce Island sites predicted Juskatla Inlet King Creek Koot light defoliation live crown 100 Louise Island mapped during aerial Marie Lake mean length Moresby Island National Park Reserve/Haida Percent of trees Phantom Cr planted Douglas-fir proportion of live Queen Charlotte City Queen Charlotte Islands regenerating western hemlock Sandspit second consecutive severe defoliation Sitka spruce Skidegate small area spruce adjacent stripped top study plots Tasu Sound Tsuga Turnquist unspaced stands Visible defoliation western blackheaded budworm Western Forest Products Weyerhaeuser and Western whole tree defoliation Whole-tree mortality