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This document investigates the six-year growth and survival of noble fir in coastal British Columbia, a region where the species does not occur naturally. By testing 23 different seed sources across 12 diverse locations, the author examines how various environmental conditions and genetic origins influence the tree's performance. The findings indicate that while the species is highly productive and resilient in maritime climates, it remains vulnerable to frost in more continental settings. This document aims to identify ideal planting sites and superior seed sources to guide the successful introduction of noble fir for regional reforestation.

This document evaluates the long-term effectiveness of dispersed tree retention as an alternative to clearcutting in the coast-interior transition zone of British Columbia. By monitoring a Douglas-fir forest near Boston Bar for fifteen years, the study examines how various levels of overstorey shading influence natural regeneration success, stand structure, and biological legacies. The data reveals that while residual trees enhance the micro-climate for new growth, they face significant mortality from windthrow, Douglas-fir bark beetle, and wildfire, leading to a substantial decline in living density over time. This document suggests that while dispersed retention provides valuable biodiversity attributes like snags and woody debris, an aggregated retention pattern might offer greater stability and protection against environmental stressors.