REP13745

• Permit No: C1982057
• IBM Index Class Name: Report
• Doc Date: 3/29/2004
• Doc Name: 2003 Revegetation Monitoring Report
• From: SCC
• To: DMG
• Permit Index Doc Type: Reveg Monitoring Report
• Media Type: D
• Archive: No

with 7.2% total vegetation cover, followed by mountain brome (5.4%), (oxtail barley (Critesion
jubatum, 3.4%), and green needlegrass (Nassella viridula, 3.2%). Composing 21 percent total
vegetation cover were introduced annual and biennial forbs. Of the 17 species observed in this
area, 12 were quantitatively encountered, and six contributed over 2% to total vegetation cover.
The two most dominant species were twolobe speedwell, 6.1%, and devil's shoestrings
(POlygonum arenastrum), 3.4 percent. Introduced annual grasses accounted for 13.7 percent
total vegetation cover. Japanese brome (Bromus japonicus) was the most prevalent species
within this lifeform with 9.8% total vegetation cover, while cheatgrass composed most of the
balance with 3.7%. Also accounting for a significant portion of total cover were native perennial
forbs, occupying approximately 11 percent total vegetation cover. About half of this total was
from blue flax (Adenolinum IewisiQ, while the only other species with greater than 1 % total
vegetation cover was western yarrow (Achilles lanulosa). Introduced perennial cool season
grasses amounted to 10.1 percent total vegetation cover, orchard grass dominating with close to
8110`"' of the total. Three other lifeforms comprised the remainder of total vegetation cover:
introduced perennial forbs, native annual and biennial forbs, and native shrubs.
Total vegetation cover was 40%. Bare soil, litter, rock, and standing dead each contributed
33.92, 23.6, 1.68, and 0.8 percents, respectively. Total species density was 27 species per 100
sq.m.
PRODUCTION (TABLE 5)
Alfalfa contributed 51.7 pounds per acre in 2003 and all other species composed an average of
2,250 pounds per acre for a total of 2,301 pounds per acre.
WOODY PLANT DENSITY (TABLE 6)
Native shrubs averaged 752.7 stems per acre. Snowberry, big sagebrush, and bitterbrush were
the three most dominant with 331.9, 275.2, and 63.1 stems per acre, respectively. Chokecherry
and tall threetip sagebrush (Seriphidium tripartitum) each averaged between 20 and 30 stems per
acre. Those species with under 20 stems per acre were Woods rose, Saskatoon serviceberry,
and rubber rabbitbrush (Chrysothamnus nauseosus).
Aspen Extended Reference Area
(Photographs 9 through 12)
COVER (TABLE 7)
Native perennial forbs accounted for 31.5 percent of total vegetation cover. Mountain bluebells
(Mertensia ciliata), sweet Cicely (Osmorhiza chilensis), tulles( coneflower (Rudbeckia ampla),
and serrate groundsel (Senecio serra) were the most common species accounting for 8.38%,
5.78%, 4.27%, and 4.11 % of total vegetation cover, respectively. Native shrubs and native trees
were also dominant lifeforms in this area. Native shrubs comprised 28.2 percent of total