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 |
|---|---|---|---|
| Mokelumne - Charity | Humboldt-Toiyabe National Forest | 11.2% | 9.18 |
| Black Cinder | Lassen National Forest | 7.1% | 6.93 |
| Tioga Lake | Inyo National Forest | 5.4% | 18.27 |
| Mt. Bidwell | Modoc National Forest | 4.6% | 217.8 |
| South Sierra | Sequoia National Forest | 4.2% | 135.72 |
| Dardanelles | Lake Tahoe Basin Management Unit | 3.6% | 209.07 |
| Trail Lake | Lassen National Forest | 3.1% | 14.31 |
| Hall Natural Area | Inyo National Forest | 2.5% | 52.11 |
| Bear Camp Flat | Modoc National Forest | 2.4% | 24.21 |
| Bell Meadow | Stanislaus National Forest | 1.8% | 59.04 |
| Mokelumne - Hawkins Pk | Humboldt-Toiyabe National Forest | 1.7% | 114.3 |
| Hat Mtn. | Modoc National Forest | 1.1% | 40.59 |
| South Sierra | Inyo National Forest | 0.9% | 152.28 |
| Eagle | Stanislaus National Forest | 0.8% | 50.94 |
| Castle Peak | Tahoe National Forest | 0.7% | 39.42 |
| Jobs Peak (CA) | Humboldt-Toiyabe National Forest | 0.6% | 51.03 |
| Carson - Iceberg | Stanislaus National Forest | 0.4% | 84.24 |
| Area | Forest | Coverage | Hectares |
|---|---|---|---|
| Rose - Davis Mdw. | Humboldt-Toiyabe National Forest | 5.3% | 50.85 |
| Area | Forest | Coverage | Hectares |
|---|---|---|---|
| Olallie | Mt. Hood National Forest | 5.6% | 173.97 |
| Mt. Bidwell | Fremont National Forest | 3.9% | 69.93 |
| Deadhorse Rim | Fremont National Forest | 2.1% | 116.82 |
| Crane Mountain | Fremont National Forest | 1.7% | 162.81 |
| Coleman Rim | Fremont National Forest | 1.5% | 66.69 |
| Charlton | Deschutes National Forest | 1.5% | 42.03 |
| Hanan Trail | Fremont National Forest | 1.3% | 44.01 |
| Area | Forest | Coverage | Hectares |
|---|---|---|---|
| Long Swamp | Okanogan National Forest | 0.3% | 86.49 |
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.