Roadless Areas
Home/Ecosystems/ Interior Western North American Temperate Ruderal Grassland

Interior Western North American Temperate Ruderal Grassland

EVT 9828
HerbExotic herbaceous
Roadless Areas (58)

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.

California (2)

AreaForestCoverageHectares
LavasModoc National Forest61.7%6,462.18
Dobie FlatModoc National Forest34.9%2,128.14

Montana (4)

AreaForestCoverageHectares
Black ButteCuster National Forest3.3%11.61
Freezeout MountainBeaverhead-Deerlodge National Forest1.0%388.71
West Big HoleBeaverhead-Deerlodge National Forest0.7%375.75
Bear - Marshall - Scapegoat - SwanLewis and Clark National Forest0.5%706.5

New Mexico (2)

AreaForestCoverageHectares
RendijaSanta Fe National Forest2.9%25.38
DatilCibola National Forest1.0%54.99

Oregon (1)

AreaForestCoverageHectares
Metolius BreaksDeschutes National Forest1.0%43.29

Utah (45)

AreaForestCoverageHectares
WellsvilleWasatch-Cache National Forest7.2%49.95
418016Uinta National Forest4.3%619.47
418012Uinta National Forest3.9%406.53
Right Hand Fork LoganWasatch-Cache National Forest3.3%201.06
Public GroveWasatch-Cache National Forest3.0%76.14
418029Uinta National Forest2.8%174.78
Boulder MountainWasatch-Cache National Forest2.7%97.92
418014Uinta National Forest2.6%100.17
Mt. Logan SouthWasatch-Cache National Forest2.5%175.41
Mahogany RangeWasatch-Cache National Forest2.5%116.19
Upper South ForkWasatch-Cache National Forest2.2%146.43
418013Uinta National Forest1.9%113.4
Mt. NaomiWasatch-Cache National Forest1.9%323.64
418025Uinta National Forest1.6%210.78
418028Uinta National Forest1.5%204.12
Cedar KnollManti-Lasal National Forest1.5%133.92
SanpitchManti-Lasal National Forest1.5%171.18
Burch CreekWasatch-Cache National Forest1.4%40.5
PavantFishlake National Forest1.4%234.54
Mt. Logan NorthWasatch-Cache National Forest1.3%103.05
Rock Creek - Green ForkWasatch-Cache National Forest1.2%28.62
Levan PeakManti-Lasal National Forest1.2%105.12
CopleysFishlake National Forest1.2%55.26
East MountainManti-Lasal National Forest1.1%138.42
418024Uinta National Forest1.1%225.09
418027Uinta National Forest1.1%59.76
418021Uinta National Forest1.0%26.1
Gentry MountainManti-Lasal National Forest1.0%25.65
418011Uinta National Forest1.0%52.74
Price RiverManti-Lasal National Forest0.9%87.57
418015Uinta National Forest0.9%61.83
Lewis PeakWasatch-Cache National Forest0.8%39.78
Mt. Um Plateau - Mt TerrillFishlake National Forest0.8%59.31
Bull ValleyFishlake National Forest0.8%35.91
Nuck WoodwardManti-Lasal National Forest0.8%38.97
Twelve Mile CreekManti-Lasal National Forest0.8%32.67
418026Uinta National Forest0.8%44.55
418006Uinta National Forest0.8%36.9
Bennion CreekManti-Lasal National Forest0.8%36.27
Dog ValleyFishlake National Forest0.7%35.19
White MountainFishlake National Forest0.7%69.84
Raft RiverSawtooth National Forest0.7%66.87
Dairy ForkManti-Lasal National Forest0.7%81.45
North PavantFishlake National Forest0.6%137.25
Big Bear CreekManti-Lasal National Forest0.5%57.15

Wyoming (4)

AreaForestCoverageHectares
Little SandstoneMedicine Bow-Routt National Forest2.1%47.52
Bear MountainMedicine Bow-Routt National Forest1.1%42.84
Laramie PeakMedicine Bow-Routt National Forest0.7%83.16
Little BighornBighorn National Forest0.4%211.14
Methodology and Data Sources

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.