Ecosystems - Roadless Areas Explorer

Ecosystem Directory

344 ecosystems

Name	Life Form	G-Rank	Areas	Hectares
California Subalpine Woodland	Tree	GNR	114	28,796
California Foothill Black Oak and Conifer Forest	Tree	GNR	112	40,951
California Foothill Mixed Oak Woodland	Tree	GNR	112	40,483
Pacific Northwest Dry Douglas-fir Forest	Tree	GNR	111	89,361
Pacific Northwest Mountain Hemlock Forest	Tree	GNR	111	78,626
California Mixed Evergreen Forest	Tree	GNR	110	156,798
Sierra Nevada Lodgepole Pine Forest	Tree	GNR	108	33,454
Pacific Northwest Mountain Shrubland	Shrub	GNR	105	43,335
Open Water	Water		104	15,241
Colorado Plateau Mixed Bedrock Canyon and Tableland	Sparse		102	31,932
Chestnut Oak and Hickory Forest	Tree	G4	101	61,974
Great Basin Semi-Desert Chaparral	Shrub	GNR	101	21,840
Sky Island Pinyon-Juniper Woodland	Tree	GNR	101	246,312
Sierra Nevada Jeffrey Pine Forest	Tree	GNR	100	13,776
Arizona Plateau Chaparral	Shrub	GNR	98	105,152
Great Basin & Intermountain Ruderal Shrubland	Shrub		98	16,436
Rocky Mountain Alpine Bedrock and Scree	Sparse		98	96,141
Northern California Subalpine Woodland	Tree	GNR	96	38,411
California Moist Serpentine Woodland and Chaparral	Shrub	GNR	94	38,751
Northern & Central Native Ruderal Forest	Tree		93	8,235
Pacific Northwest Mountain Cliff and Talus	Sparse	GNR	90	26,445
California Ruderal Grassland and Meadow	Herb		89	24,193
Intermountain Salt Desert Scrub	Shrub	GNR	85	16,756
Great Basin & Intermountain Introduced Annual Grassland	Herb		78	9,752
Rocky Mountain Bigtooth Maple Canyon	Tree	GNR	75	40,422
California Chaparral	Shrub	GNR	72	162,649
Pacific Northwest Moist Douglas-fir Forest	Tree	GNR	72	22,774
Sky Island Oak Woodland	Tree	GNR	70	52,570
Central and Southern California Mixed Evergreen Woodland	Tree	GNR	68	37,231
Northeastern Dry Oak Forest	Tree	GNR	68	71,796
Rocky Mountain Alpine Dwarf-Shrubland	Shrub	GNR	68	27,763
Sky Island Pine-Oak Forest	Tree	GNR	67	41,914
Southern California Oak Woodland and Savanna	Tree	GNR	64	25,048
Mojave Desert Mixed Scrub	Shrub	GNR	62	53,445
Apache-Chihuahuan Desert Grassland	Shrub	GNR	61	65,987
Pacific Northwest Mountain Streamside Forest	Tree	GNR	61	5,474
Great Basin & Intermountain Introduced Perennial Grassland and Forbland	Herb		60	5,441
Columbia Plateau Low Sagebrush Steppe	Shrub	GNR	59	25,105
Interior Western North American Temperate Ruderal Grassland	Herb		58	15,919
Inter-Mountain Basins Cliff and Canyon	Sparse		57	13,746
Mediterranean California Foothill and Lower Montane Riparian Woodland	Tree		55	4,396
Southern Appalachian Ridgetop Pine Forest	Tree	GNR	55	5,120
Central Appalachian Dry Oak-Pine Forest	Tree	GNR	53	14,732
Mediterranean California Alpine Bedrock and Scree	Sparse		53	27,490
Great Lakes Northern Hardwood Forest	Tree	GNR	51	55,611
North American Warm Desert Bedrock Cliff and Outcrop	Sparse		51	28,442
Central Appalachian Dry Oak-Pine Forest	Tree	GNR	50	12,322
Rocky Mountain Alpine Meadow	Herb	GNR	50	15,138
Rocky Mountain Alpine-Montane Wet Meadow	Herb		50	12,678
Southern Rockies Pinyon-Juniper Woodland	Tree	GNR	49	26,144