Sleigh haul of pulpwood, 1950. NE Ontario

Fire origin black spruce & aspen at 48yrs. Engelhart Management Unit (Plonski Forest)

Fire origin black spruce & aspen at 48yrs. Engelart Management Unit (Plonski Forest).

Fire origin jack pine & black spruce at 48yrs. N.B. crowns. Engelhart Management Unit (Plonski Forest).

Fire origin jack pine on SC #1 site. at 58 yrs. N.B. decadence of crowns

Fire origin jack pine on SC #1 site. at 58 yrs. N.B. decadence of crowns

Salt damage on white pine at road side. Huntsville.

Dead crown from blister rust (Cronartium ribicola). Parry Sound.

Dead crown from blister rust (Cronartium ribicola). Parry Sound.

Plantation of Casuarina equisetifolia at 13yrs to stabilize dunes, Cape Verde, Dakar. Photo Lloyd Burridge