Area of Ecoregions of interest stratified by IRA and Wilderness
Ecoregion Number	Globally Outstanding	Ecoregion Name	Total Area	Total Area	wilderness	wilderness+total IRA	wilderness+roads allowed IRA	total IRA increase	roads allowed IRA increase
			(ha)	(ha)	(%)	(%)	(%)	(%)	(%)
		Alaska Geographic Division
23	X	Northern Pacific Coast	4,445,830	4,446,000	25	69	42	175	34
104		Icefields and Tundra	4,321,628	4,322,000	21	79	44	267	41
		Eastern Geographic Division
7		Western Great Lakes	4,405,073	4,405,000	11	12	12	12	12
12		New England/Acadia	596,439	596,000	11	28	20	147	44
15		Allegheny Highlands	305,879	306,000	1	2	1	55	8
16	X	Appalachian/Blue Ridge	3,771,602	3,772,000	4	12	8	200	53
17	X	Mixed Mesophytic	1,861,175	1,861,000	2	4	4	78	64
18		Central US Hardwoods	1,940,470	1,940,000	2	3	3	38	32
19		Ozark Mountains	1,423,520	1,424,000	3	6	6	92	64
22	X	Southeast Mixed Forests	1,251,311	1,251,000	+	+	+	49	49
48		Piney Woods	1,164,297	1,164,000	2	2	2	8	8
50		Middle Atlantic Coast	288,310	288,000	6	9	9	48	41
51	X	Southeastern Conifer	799,392	799,000	4	6	5	54	25
52	X	Florida Sand Pine Scrub	102,233	102,000	4	5	5	33	33
59		Northern Tall Grasslands	55,320	55,000	0	34	34	***	***
		Western Geographic Division
30		North Central Rockies	6,952,814	6,953,000	20	47	36	135	52
31		Okanogan Forests	324,648	325,000	0	17	16	***	1420
32		Cascade Mnts. Leeward	1,280,843	1,281,000	37	56	44	50	13
33	X	North Cascades	723,572	724,000	43	65	47	50	7
34	X	Central Pacific Coastal	686,553	687,000	5	12	7	134	18
36		Central/South. Cascades	2,804,313	2,804,000	19	30	23	54	16
37		Eastern Cascades	3,077,305	3,077,000	2	8	6	238	90
38		Blue Mountains	2,725,775	2,726,000	15	28	23	93	42
39	X	Klamath-Siskiyou	2,810,270	2,810,000	20	34	27	74	28
41	X	Sierra Nevada	3,616,425	3,616,000	21	32	27	54	26
42		Great Basin Montane	389,262	389,000	29	80	74	179	132
43		South Central Rockies	11,318,680	11,319,000	24	63	52	159	76
44		Wasatch/Uinta Montane	2,813,020	2,813,000	9	54	48	481	249
45		Colorado Rockies	7,652,336	7,652,000	19	44	38	133	83
46		Arizona Mountains	6,340,487	6,340,000	12	23	18	89	34
47	X	Madrean Sky Islands	607,640	608,000	20	44	20	119	+
53		Palouse Grasslands	170,565	171,000	7	20	19	196	156
57		Montana Valley/Foothill	525,557	526,000	2	33	29	1637	494
58		NW Mixed Grasslands	2,858,039	2,858,000	+	6	5	5050	762
63		West. Short Grasslands	1,274,411	1,274,000	0	+	+	***	+
70	X	C. Cal. Shrub/Savanna	440,612	441,000	9	33	28	277	137
71	X	S. Cal. Woods/Shrub	1,185,016	1,185,000	32	61	51	89	46
72	X	S. Cal. Coastal Scrub	295,179	295,000	14	34	23	151	37
75		Snake/Col. Shrub Steppe	520,176	520,000	1	34	25	2686	244
76		Grt. Basin Shrub Steppe	3,281,664	3,282,000	9	60	56	602	380
77		Wyoming Basin	240,785	241,000	3	38	37	1414	901
78		Colorado Plateau	1,322,912	1,323,000	6	28	26	347	211
79		Mojave Desert	171,846	172,000	23	28	26	20	12
80	X	Sonoran Desert	77,914	78,000	25	35	28	41	10
81	X	Chihuahuan Desert	136,971	137,000	5	30	16	531	56