Browse Items (13651 total)

Defoliation and mortality in balsam fir. New Brunswick

Spruce budworm damage in balsam fir. New Brunswick

Spruce budworm damage in balsam fir. New Brunswick

Cronartium comptoniae (Sweetfern blister rust) cankers on 50 yr jack pine. Cairo-Flavelle Twp. Engelhart Management Unit.

Cronartium comptoniae (Sweetfern blister rust) cankers on 50 yr jack pine. Cairo-Flavelle Twp. Engelhart Management Unit

Vigorous crown, good form in 60 yr jack pine. N.B. poor form -broken crown to right

Three stages in crown decadence in 140+ yr white pine. Lake Temagami shoreline reserve.

Aerial view of strip clearcut begun in 1962, photo 1970. Joan Peninsula, Lake Temagami.

Aerial view of strip clearcut begun in 1962, photo 1970. Joan Peninsula, Lake Temagami.

Planting tube seedlings of lodgepole pine. Northwest Pulp and Power, Hinton Alberta