PERMFILE41090

• Permit No: C1981021
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: APPENDIX B VEGETATION STUDIES
• Media Type: D
• Archive: No

•
Table 6. Affected area. Cover, frequency, and
the big sagebrush community. Based on
deviation (S. D. ). Importance Value (I
species diversity
data from 15 lm2
sunnnaries for herb layer
quadrats. ± values equal
.V.) = Relative Cover + Relative Frequency.
components i
the standard
1980 data.

Mean
Cover
Relative
Cover Range of
Cover
Values
Percent
Frequency
Relative
Frequency

I.V.

Rank
GRASSES Af~D SEDGES
Agropyron smithii 0.6 1.67 0- 4 93.3 10.14 11.81 5
Calamagrostis montanensis <0.1 <0.01 0-<1 33.3 3.62 3.62 13
Carex heliophila 0.8 2.22 0- 5 66.7 7.25 9.47 6
F'estuca idahoensis ~ 10.00 0-10 86.7 9.42 19.42 2
Juncus arcticus ssp. ater <0.1 <0.01 0-<1 6.7 0.73 0.73 24
Xoeloria macrantha 0.6 1.67 0- 2 66.7 7.25 8.92 7
Oryzopsis iiymenoides <0.1 <0.01 0-<1 6.7 0.73 0.73 24
Sitariion Zo~igifolium 0.1 0.28 •• 0- 1 33.3 3.62 3.90 12
Stipa comata 0.56 0- 3 6.7 0.73 1.29 22
Stipa pinetorum ~
1.3 3.61 0- 6 80.0 8.69 12.30 3
FORBS
Antennaria rosea 0.6 1.67 0- 5 26.7 2.90 4.57 11
Arenoria hookeri 0.2 0.56 0- 2 13.3 1.45 2.01 20
AatragaLus pectinatus <0.1 <0.01 0-<1 6.7 0.73 0.73 24
Ez•iogonum umbellatum 0.3 0.83 0- 2 20.0 2.17 3.00 15
Gayophytum ramosissimum <0.1 <0.01 0-<1 33.3 3.62 3.fiZ 13
Linanthus harknessii <0.1 <0.01 0-<1 26.7 2.90 2.:0 16
Plortensia viridis <0.1 <0.01 0-<1 20.0 2.17 2.17 17
Orthocarpus Zuteus- 0.8 2.22 0- 4 -+60.0 6.52 8.74 8
Phlox hnodi.i 0.1 0.28 0- 1 13.3 1.45 1.73 21
Polygortun sawatcliense <0.1 <0.01 0-<1 46.7 5.07 5.07 10
Potentilla sp. <0.1 <0.01 0-<1 20.0 2.17 2.17 17
TrifoZium gymnocaiq~on <0.1 <0.01
~, 0-<1 20.0 2.17 2.17 17
s~hfi~l Z.o S S6