Over-mature black spruce on sphagnum peat. Older trees are 210 yrs N.B. younger age classes in openings. Quetico. Photo Orie Loucks.

Over-mature Douglas fir at highest elevation in Siskiyou Mts. N.B. dead tops and poor crowns.

Over-mature red pine, fire origin. N.B. hardwoods in opening one young red pine in the foreground.

Over-mature red pine with black spruce developing in openings. Quetico. Photo Orie Loucks.

Over mature stand 350+years being harvested at UBC Forest, Haney

Over-mature white spruce killed by the bark beetle. Northwood TFL, Prince George.

Overpass to Keefer Lakehead Terminal.

Buildings and Landscape: Overview of Port Arthur. Donor: P. Voutilainen.

Overwintered container (Leach tube); sown April 1973, photo Aug/74. Fir douglas, 1+0, container. Weyerhaueser.

Overwintered paperpot stock grown at Camp #228. n.b. desiccation in some of the containers. Container, jack pine, 1+0.