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 |
|---|---|---|---|
| Granite Peak | San Bernardino National Forest | 25.2% | 45.72 |
| Quatal | Los Padres National Forest | 11.9% | 348.21 |
| Sawmill - Badlands | Los Padres National Forest | 8.4% | 1,753.65 |
| Sugarloaf | San Bernardino National Forest | 5.9% | 194.31 |
| Deep Creek | San Bernardino National Forest | 4.4% | 422.01 |
| Sheep Mountain | Angeles National Forest | 4.0% | 341.64 |
| Cucamonga A | Angeles National Forest | 3.5% | 17.91 |
| Cucamonga B | San Bernardino National Forest | 3.5% | 167.76 |
| Pleasant View | Angeles National Forest | 3.3% | 353.61 |
| Camuesa | Los Padres National Forest | 2.8% | 93.78 |
| Mill Peak | San Bernardino National Forest | 2.8% | 87.75 |
| Antimony | Los Padres National Forest | 2.4% | 396.09 |
| Cuyama | Los Padres National Forest | 2.2% | 176.94 |
| Pyramid Peak A | San Bernardino National Forest | 2.1% | 119.16 |
| Raywood Flat B | San Bernardino National Forest | 1.9% | 89.55 |
| Crystal Creek | San Bernardino National Forest | 1.9% | 52.11 |
| Malduce Buckhorn | Los Padres National Forest | 1.8% | 105.3 |
| Arroyo Seco | Angeles National Forest | 1.8% | 33.57 |
| Eagle Peak | Cleveland National Forest | 1.6% | 41.13 |
| Heartbreak Ridge | San Bernardino National Forest | 1.5% | 27.45 |
| Sespe - Frazier | Angeles National Forest | 1.5% | 25.83 |
| Circle Mountain | San Bernardino National Forest | 1.4% | 36.9 |
| Fox Mountain | Los Padres National Forest | 1.4% | 297.63 |
| Sespe - Frazier | Los Padres National Forest | 1.3% | 545.67 |
| Fish Canyon | Angeles National Forest | 1.1% | 136.53 |
| White Ledge | Los Padres National Forest | 1.1% | 79.83 |
| Rouse Hill | San Bernardino National Forest | 1.0% | 52.83 |
| Santa Cruz | Los Padres National Forest | 0.9% | 76.41 |
| Mono | Los Padres National Forest | 0.9% | 97.38 |
| Horse Creek Ridge | San Bernardino National Forest | 0.8% | 30.42 |
| Diable | Los Padres National Forest | 0.6% | 47.07 |
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.