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• inermis ssp. pumpellianus), sun ss~ge (Carer. heliophila), and fowl bluegrass (Poe pelustris). <br />Total herbaceous production to the Aspen vegetation type (Table 2) was SG.6 gm/sq.m. (789 <br />lb/acre). Perennial fortis were the largest contributors (49.6 gm/sq.m.), closely followed by <br />perennial greminoids (36.3 gm/sq.m. ). Kentucky bluegrass and bracken fern were the largest <br />individual species contributors. <br />Shrub density in the Aspen type (Table 3) averaged 42.6 stems/50 sq.m. (3448 stems / erre). <br />By far the greatest contributor to this density was mountain snowberry (23.1 stems / 50 <br />sq.m.). Other major contributors were Saskatoon serviceberry (9.5 stems / 50 sq.m. ), Oambel <br />oak (2.8 stems / 50 sq.m. ), and aspen saplings (2.4 stems / 50 sq.m.). <br />Average tree density in the Aspen type (Table 4) of 12.5 ! 250 sq.m. (202 stems !acre) is, of <br />course, misleading since many of the stands had most or ell frees removed by beaver. Of the 15 <br />stands that had any trees at all, the average was 16.6 stems / 250 sq.m. (269 stems /acre). <br />The aspen in the sampled stands where aspen were present averaged I 1 m in height. The largest <br />• trees were typically in the diameter-et-breast-height (dbh) range of 20 to 25 cm, with ages of <br />50 to 65 years. In the abundant 10 to 15 cm dbh size class, ages were in the low 40's. <br />3.1.2 CONIFER <br />The Conifer vegetation type was confined to a single stand on a step north-facing slope in the <br />northeast part of the study area (Map 1, Figure :,). The stand is dominated by a single species, <br />subalpine Tir (Abies lasioceroa), which forms a very dense overstory throughout much of the <br />stand (Figure 4). Cover by suhalpine fir averaged 65.2`8 (Table 5), by far the hulk of the <br />T.2~ total vegetation cover in the stand. Forb and greminoid development was greater in areas <br />where tree overstory was less dense (tee Semple 1 ,Table 5), but overall perennial forb and <br />perennial greminoid cover averaged only 2.4~ each. Perennial forb species present in the scant <br />cover include a vegetative aster (Aster sp.), white-flowered peavine,spreading aniseroot, <br />Fendler meadowrue, end violet. Oraminoids occasionally enwuntered included elk sedge ( r x <br />geyeri), blue wildrye, timothy (Phleum raD tense), and Kentucky bluegrass. <br />Shrubs managed only 2.0~ cover, comprised of Saskatoon serviceberry, Oregon grape, end <br />. mountain snowberry. Mosses and lichens were present in the amount of 0.8~ cover. <br />-9- <br />