The Lucille Mountain study area (53 18' N, 120 14' W) is located on a northwest-facing slope about 5 km southwest of McBride, B.C., in the moist, mild Engelmann-Spruce-Subalpine fir subzone (ESSFmm). The elevation ranges from 1375 to 1600 m, and the slope from 15 to 45%. Soils are predominantly Humo-Ferric Podzols with a silty texture, formed on a blanket of medium to coarse-textured morainal deposits.

The pre-harvest stand at Lucille Mountain was dominated by subalpine fir (Abies lasiocarpa), with a smaller component of Engelmann spruce (Picea engelmannii). The understorey was dominated by the shrubs Rhododendron albiflorum, Vaccinium membranaceum, V. ovalifolium, and Menziesii ferruginea, and herbs such as Rubus pedatus and Streptopus roseus. The bryophyte layer was dominated by the moss Pleurozium schreberi and the liverwort Barbilophozia lycopodioides. The arboreal lichens Bryoria spp. and Alectoria sarmentosa are moderately abundant, and provide winter forage for the mountain caribou that range in the area.

The site was harvested in 1991/92, with treatments that included clearcut, patch cut, irregular shelterwood, group retention, and single-tree selection systems.

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