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 |
|---|---|---|---|
| Burnt Lava Flow | Modoc National Forest | 91.9% | 3,119.04 |
| Callahan Flow | Klamath National Forest | 44.3% | 579.33 |
| Prospect | Lassen National Forest | 34.6% | 570.6 |
| Mt. Hoffman | Modoc National Forest | 34.4% | 1,361.61 |
| Devils Garden | Lassen National Forest | 25.6% | 345.15 |
| Timbered Crater | Lassen National Forest | 19.2% | 318.51 |
| Callahan Flow | Modoc National Forest | 16.9% | 452.52 |
| Cypress | Lassen National Forest | 9.9% | 135 |
| Lava | Lassen National Forest | 1.0% | 25.02 |
| Lavas | Modoc National Forest | 1.0% | 106.56 |
| Area | Forest | Coverage | Hectares |
|---|---|---|---|
| Huckleberry | Willamette National Forest | 27.4% | 87.84 |
| Brown Mountain | Rogue River National Forests | 10.9% | 295.11 |
| South Paulina | Deschutes National Forest | 8.2% | 301.14 |
| Brown Mt. | Winema National Forest | 7.0% | 88.02 |
| Badlands | Winema National Forest | 3.9% | 12.87 |
| Sky Lakes B | Winema National Forest | 2.4% | 95.22 |
| North Paulina | Deschutes National Forest | 1.3% | 106.11 |
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.