2001-12-11_PERMIT FILE - C1981012A ‎(5)‎

• Permit No: C1981012A
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: EXHIBIT 15 COVER PRODUCTION AND DENSITY OF VEGETATION 10/80
• Media Type: D
• Archive: Yes

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RESULTS AP!D DISCUSSIOP!
Vegetation cover, production and density means are discussed

for each separate reference area and its corresponding vegetation
type. Dominant species are selected for each type based on cover,
production and density means. These dominant species are discussed
in relation to their physical environment.
The P?axwell !4ine, including the grassland and pinyon-juniper
types will be discussed first. Table 1 sho~vs the mean cover values
for the grassland reference area. Bouteloua oracilis had a mean
cover value of 31.3`,x, Artemisia fri ida had a mean cover value of .
7.5`.S, Carex eleocharis had a mean cover value of 3.595, and
Xanthocephalum sarothrae had a mean cover value of 2.7a. The remain-
ing grasses and fortis had mean cover values of 1.8"S and below. Total
mean cover for the grassland site vas 52.3'x. Bare around accounted
for 33.5;5 of sampled areas, litter accounted for 14.09;, and rock
accounted for 0.2`5. (Tables are found in Appendix B.)
Production means for the grassland type are given in Table 2.
Bouteloua gracilis had a mean production value of 23.5 gins/m2.
Artemisia frigida had a mean production value of 8.1 gms/m2,
Astr•agalus missouriensis had a mean production value of 5.9 gms/m2,
Xanthocephalum sarothrae had a mean production value of 4.9 gins/nit,
and Carex eleocharis had a mean production value of 3.7 gms/int. The
remaining species had mean production values of 1.5 gms/m2 and beloo-i. .
Total mean production for the grassland site vas 52.5 gms/m2.
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