2009-04-01_REPORT - C1994082 ‎(6)‎

• Permit No: C1994082
• IBM Index Class Name: REPORT
• Doc Date: 4/1/2009
• Doc Name: 2008 Annual Revegetation Monitoring Report
• From: Seneca Coal Company
• To: DRMS
• Permit Index Doc Type: Reveg Monitoring Report
• Email Name: DTM
• Media Type: D
• Archive: No

native perennial cool season grasses contributing 185.6 Ibs per acre. Introduced perennial forbs
01 were the third lifeform present with less than 2 Ibs per acre.
HAUL ROAD REFERENCE AREA
(Photographs 29-30)
Cover
(Table 13)
Introduced perennial cool season grasses were the.predominant lifeform observed in the Haul
Road Reference Area, contributing 32.3 percent all-hit cover. Within this group, smooth brome
(Bromopsis inermis) was the dominant species contributing 29.1 percent all-hit cover. Native
shrubs was the second most observed lifeform with 9.3 percent all-hit cover with the majority
coming from big sagebrush contributing 9.1 percent all-hit cover. Native perennial cool season
grasses were the third most encountered lifeform with 1.5 percent all-hit cover.
Total average vegetation cover, for first hits, was 43.0 percent. Total average vegetation cover,
for all hits, was 45.6 percent. Standing dead, litter, bare soil, and rock each had 1.9, 34.7, 20.3,
and 0.1 percent cover, respectively (first hits). Average species density was 21.7 species per 100
sq.m.
• Production
(Table 14)
Total average production was 1183.0 Ibs per acre. Introduced perennial cool season grasses
contributed the majority with an average production of 1036.7 Ibs per acre. Five other lifeforms
were present with less than 40 Ibs per acre.
MOUNTAIN BRUSH EXTENDED REFERENCE AREA
(Photographs 31-34)
Cover
(Table 15)
Native shrubs were most abundant, comprising 82.3 percent all-hit cover. Within this group,
Gambel's oak was most abundant contributing 35.7 percent all-hit cover. Mountain snowberry,
Saskatoon serviceberry and chokecherry were common, having 20.0, 15.3, and 9.2 percent all-hit
cover, respectively. Native perennial forbs were the second most abundant lifeform (25.7 percent
all-hit cover), having numerous species with low percent cover values and no dominant species.
Western aniseroot and American vetch (Vicia americana) had the highest percent cover values of
this group (3.8 percent all-hit cover each). Native perennial cool season grasses was the third
most abundant group (21.5 percent all-hit cover), dominated by Agassiz bluegrass (7.7 percent
• all-hit cover) and elk sedge (Carex geyen) (5.2 percent all-hit cover).
13