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The proportion of the area burnt in 1988 that is conducive to moderate (Left) and severe (Right) outbreaks of mountain pine beetle (Top) and Douglas-fir beetle (Bottom) as postfire stands develop through time. To isolate the effect of variability in postfire tree regeneration, results based on actual stands (solid red line) are compared with hypothetical trajectories initialized with spatially homogeneous conditions (dashed gray line).
