Table 1.
Mean and range of environmental, habitat, and disturbance variables tested in the 12 disturbance models across the 303 survey clusters
| Predictor variable | Variable type | Prevalence (percentage of occurrence) | Mean | 10th and 90th percentiles |
|---|---|---|---|---|
| TAREA (ha) | environmental | N/A | 206 | 181–237 |
| AGE (yr) | habitat | N/A | 82 | 43–114 |
| SWFB (percentage of area) | habitat | 0.80 | 13.2 | 0–34.5 |
| HDWD (percentage of area) | habitat | 0.96 | 38.6 | 2.7–75 |
| LWLD (percentage of area) | habitat | 0.90 | 17.6 | 0–51.8 |
| CON2 (percentage of area) | habitat | 0.83 | 13.0 | 0–36.9 |
| OPNF (percentage of area) | habitat | 0.85 | 7.1 | 0–17.7 |
| NL (percentage of area) | disturbance | 0.95 | 1.3 | 0.2–2.4 |
| WL (percentage of area) | disturbance | 0.65 | 1.9 | 0–5.1 |
| HU (percentage of area) | disturbance | 0.40 | 5.7 | 0–21.3 |
| WE (percentage of area) | disturbance | 0.61 | 0.9 | 0–1.8 |
| All Disturbance (percentage of area) | disturbance | 0.95 | 10.0 | 0–25.7 |
The prevalence or occurrence of habitat and disturbance classes within survey clusters are calculated using the percentage of occurrence of each variable. Predictor variable definitions: TAREA, total area sampled by each survey cluster; AGE, area‐weighted stand age; SWFB, white spruce/balsam fir; HDWD, hardwood (combined trembling aspen, white birch, balsam poplar); LWLD, black spruce/larch lowlands; CON2, black spruce/pine uplands; OPNF, open non‐forested habitat (shrublands, grasslands, recent burns <20 yr old); NL, narrow, vegetated linear features; WL, wide linear features (pipelines, powerlines, all roads); HU, harvest units with harvest activity <20 yr old; WE, bitumen, oil, and gas wells; All Disturbance, total area of all disturbances.