Inventoried Roadless Areas where this ecosystem is present, identified from LANDFIRE 2024 Existing Vegetation Type spatial analysis. Coverage indicates the proportion of each area occupied by this ecosystem type.
| Area | Forest | Coverage | Hectares |
|---|---|---|---|
| Cougar Bluff | Umpqua National Forest | 53.6% | 1,209.6 |
| Elkhorn | Willamette National Forest | 28.8% | 1,091.25 |
| Mt. Hagen | Willamette National Forest | 28.5% | 738.99 |
| Opal Creek | Willamette National Forest | 25.9% | 567.99 |
| Williams Creek | Umpqua National Forest | 23.7% | 561.69 |
| Last | Umpqua National Forest | 16.1% | 499.68 |
| Limpy Rock | Umpqua National Forest | 5.5% | 152.19 |
| French Pete (a) | Willamette National Forest | 4.0% | 27.18 |
| Bull Of The Woods | Mt. Hood National Forest | 2.5% | 88.47 |
| Canton Creek | Umpqua National Forest | 2.4% | 64.89 |
| Calf - Copeland Creek | Umpqua National Forest | 1.7% | 108.54 |
| Larch | Mt. Hood National Forest | 1.3% | 68.58 |
| Roaring River | Mt. Hood National Forest | 1.1% | 121.05 |
| Eagle | Mt. Hood National Forest | 1.0% | 67.95 |
| Area | Forest | Coverage | Hectares |
|---|---|---|---|
| Gotchen Creek | Gifford Pinchot National Forest | 14.7% | 446.67 |
| Bourbon | Gifford Pinchot National Forest | 9.6% | 176.04 |
| Norse Peak | Mt Baker-Snoqualmie National Forest | 6.8% | 250.65 |
| Siouxon | Gifford Pinchot National Forest | 5.6% | 287.46 |
| Silver Star | Gifford Pinchot National Forest | 5.2% | 162.9 |
| Eagle Rock | Mt Baker-Snoqualmie National Forest | 5.1% | 703.17 |
| Glacier Peak K | Mt Baker-Snoqualmie National Forest | 2.3% | 443.16 |
| White Chuck Mountain | Mt Baker-Snoqualmie National Forest | 1.4% | 32.85 |
| Boulder River | Mt Baker-Snoqualmie National Forest | 1.3% | 168.93 |
| Tumwater | Gifford Pinchot National Forest | 1.3% | 44.55 |
| Glacier Peak B | Mt Baker-Snoqualmie National Forest | 1.2% | 93.51 |
| Glacier Peak L | Mt Baker-Snoqualmie National Forest | 1.1% | 62.73 |
| Mt. Baker Noisy - Diobsud | Mt Baker-Snoqualmie National Forest | 1.0% | 230.94 |
| Pressentin | Mt Baker-Snoqualmie National Forest | 0.9% | 54.54 |
| Mt. Baker West | Mt Baker-Snoqualmie National Forest | 0.5% | 53.46 |
| Dark Divide | Gifford Pinchot National Forest | 0.4% | 79.2 |
Ecosystem classification: Ecosystems are classified using the LANDFIRE 2024 Existing Vegetation Type (EVT) layer, mapped to NatureServe Terrestrial Ecological Systems via a curated crosswalk. Each EVT is linked to the USNVC (U.S. National Vegetation Classification) hierarchy through pixel-level co-occurrence analysis of LANDFIRE EVT and NatureServe IVC Group rasters across all roadless areas.
Vegetation coverage: Coverage percentages and hectares are derived from zonal statistics of the LANDFIRE 2024 EVT raster intersected with roadless area boundaries.
Ecosystem narratives and community species: Sourced from the NatureServe Explorer API, representing professional ecological assessments of vegetation composition, environmental setting, dynamics, threats, and characteristic species assemblages.
IVC hierarchy: The International Vegetation Classification hierarchy is sourced from the USNVC v3.0 Catalog, providing the full classification from Biome through Association levels.
Component associations: Plant community associations listed as components of each NatureServe Ecological System. Association data from the NatureServe Explorer API.
State ranks: Conservation status ranks assigned by NatureServe member programs in each state where the ecosystem occurs.