Roadless Areas
Home/Ecosystems/ Great Basin & Intermountain Ruderal Shrubland

Great Basin & Intermountain Ruderal Shrubland

EVT 9336
ShrubExotic tree-shrub
Roadless Areas (98)

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 (16)

AreaForestCoverageHectares
Horse Mdw.Inyo National Forest3.9%88.74
Adams PeakPlumas National Forest3.3%71.55
PaiuteInyo National Forest3.0%705.51
Black CanyonInyo National Forest2.5%325.17
TinemahaInyo National Forest2.4%268.11
Independence CreekInyo National Forest1.4%78.3
Andrews Mtn.Inyo National Forest1.4%56.25
Big CanyonModoc National Forest1.4%37.08
Damon ButteModoc National Forest1.4%139.32
Boundary Peak (CA)Inyo National Forest1.0%887.94
Steele SwampModoc National Forest0.9%70.02
Soldier CanyonInyo National Forest0.8%129.24
Wheeler RidgeInyo National Forest0.8%50.04
Jobs Peak (CA)Humboldt-Toiyabe National Forest0.7%63.36
Dobie FlatModoc National Forest0.7%41.58
Glass MountainInyo National Forest0.4%78.03

Nevada (45)

AreaForestCoverageHectares
Pine Grove NorthHumboldt-Toiyabe National Forest16.1%571.32
Grant - Lower ScofieldHumboldt-Toiyabe National Forest11.8%277.38
Currant - Duckwater CHumboldt-Toiyabe National Forest10.5%8.19
Rough CreekHumboldt-Toiyabe National Forest7.7%265.77
Currant - BroomHumboldt-Toiyabe National Forest7.0%4.5
Currant - Duckwater DHumboldt-Toiyabe National Forest6.9%4.23
Petes WellHumboldt-Toiyabe National Forest5.0%30.78
Jobs Peak (NV)Humboldt-Toiyabe National Forest5.0%26.91
Potts - BHumboldt-Toiyabe National Forest4.4%9.81
Arc Dome - North JetHumboldt-Toiyabe National Forest4.0%36.72
Marble FallsHumboldt-Toiyabe National Forest3.9%78.75
Pine Grove SouthHumboldt-Toiyabe National Forest3.9%1,395.09
Arc Dome - South JetHumboldt-Toiyabe National Forest3.6%39.96
Grant - IrwinHumboldt-Toiyabe National Forest3.3%151.47
Grant - TroyHumboldt-Toiyabe National Forest3.0%46.62
Paradise PeakHumboldt-Toiyabe National Forest2.9%216
Grant - ScofieldHumboldt-Toiyabe National Forest2.4%32.22
Mt. EtnaHumboldt-Toiyabe National Forest2.2%179.82
Seyler PeakHumboldt-Toiyabe National Forest2.2%51.75
Toquima CaveHumboldt-Toiyabe National Forest2.0%353.07
Iron SpringHumboldt-Toiyabe National Forest2.0%294.66
Moriah - Hendrys Ck.Humboldt-Toiyabe National Forest1.9%18.45
Arc Dome - CarversHumboldt-Toiyabe National Forest1.8%28.08
Ruby - ThompsonHumboldt-Toiyabe National Forest1.8%38.16
Steven's SpringsHumboldt-Toiyabe National Forest1.6%35.19
Wellington HillsHumboldt-Toiyabe National Forest1.6%138.33
Bunker HillHumboldt-Toiyabe National Forest1.6%180
Bank SpringsHumboldt-Toiyabe National Forest1.5%107.64
Lobdell SummitHumboldt-Toiyabe National Forest1.4%45.45
Hot Springs ButteHumboldt-Toiyabe National Forest1.2%37.17
WilhoitesHumboldt-Toiyabe National Forest1.1%48.96
Ruby - Smith CkHumboldt-Toiyabe National Forest0.9%27.9
White Pine Mtn.Humboldt-Toiyabe National Forest0.9%89.01
Humboldt - SouthHumboldt-Toiyabe National Forest0.8%35.46
Chineese Camp (NV)Humboldt-Toiyabe National Forest0.8%46.62
Butler Mtn.Humboldt-Toiyabe National Forest0.7%73.62
HuntoonHumboldt-Toiyabe National Forest0.7%101.88
Rock CanyonHumboldt-Toiyabe National Forest0.7%87.66
Arc Dome - Secret BsnHumboldt-Toiyabe National Forest0.6%181.17
Four MileHumboldt-Toiyabe National Forest0.6%56.88
Snake - ChokecherryHumboldt-Toiyabe National Forest0.5%63.09
Excelsior Mtns.Humboldt-Toiyabe National Forest0.4%123.21
QuinnHumboldt-Toiyabe National Forest0.4%103.41
Toiyabe RangeHumboldt-Toiyabe National Forest0.3%137.88
Pearl PeakHumboldt-Toiyabe National Forest0.3%86.04

New Mexico (2)

AreaForestCoverageHectares
Bull CanyonCarson National Forest6.0%279.27
Mesa AltaSanta Fe National Forest4.6%35.1

Oregon (6)

AreaForestCoverageHectares
Mountain SheepWallowa-Whitman National Forest16.2%1,278.36
Deschutes / Steelhead CanyonOchoco National Forest13.6%607.32
Snake RiverWallowa-Whitman National Forest4.4%556.2
BuckhornWallowa-Whitman National Forest4.2%293.31
SkookumUmatilla National Forest2.8%85.77
Cook RidgeWallowa-Whitman National Forest0.7%55.62

Utah (26)

AreaForestCoverageHectares
CottonwoodDixie National Forest10.6%290.52
Wayne WonderlandFishlake National Forest7.5%376.11
0401032Ashley National Forest5.0%129.69
Cedar BenchDixie National Forest4.3%155.43
Bull ValleyDixie National Forest4.3%189.45
Flat CanyonFishlake National Forest3.2%113.04
Happy ValleyDixie National Forest2.8%161.1
Red Canyon NorthDixie National Forest2.5%101.52
Moody WashDixie National Forest2.1%269.82
Beehive PeakFishlake National Forest1.9%461.34
Coal HollowManti-Lasal National Forest1.8%44.55
Rock CanyonDixie National Forest1.6%105.66
Cave CanyonDixie National Forest1.5%35.46
Red Canyon SouthDixie National Forest1.5%22.5
Joe LottFishlake National Forest1.5%118.98
Oak CreekFishlake National Forest1.2%255.69
Stansbury MountainsWasatch-Cache National Forest1.1%181.62
Pine Valley MountainsDixie National Forest1.1%256.41
Levan PeakManti-Lasal National Forest1.0%86.13
Headwaters / Pine Park Bench / Pine ParkDixie National Forest1.0%42.12
418022Uinta National Forest0.9%61.74
Long Neck Mesa / Steep Creek / Oak Creek - Steep Creek / OakDixie National Forest0.8%186.57
PyramidsFishlake National Forest0.7%36.45
Steves MountainFishlake National Forest0.6%53.55
418016Uinta National Forest0.4%62.1
Muddy Creek - Nelson Mt.Manti-Lasal National Forest0.3%77.58

Wyoming (3)

AreaForestCoverageHectares
0401036Ashley National Forest7.9%200.52
0401035Ashley National Forest3.8%84.51
0401019Ashley National Forest1.1%28.44
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.