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PERMFILE42192
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PERMFILE42192
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Last modified
8/24/2016 10:44:43 PM
Creation date
11/20/2007 11:02:44 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1980005
IBM Index Class Name
Permit File
Doc Date
12/11/2001
Doc Name
BASELINE VEGETATION STUDIES - EAST WADGE EXTENSION AREA
Section_Exhibit Name
TAB 10 ADDENDUM 10-2
Media Type
D
Archive
No
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<br />As might be expected with a dense evergreen overstory, production in the understory (Table 6) <br />was very low with only 16.5 gm / sq.m. (197 ID / acre). Perennial forb production of 9.9 gm <br />/sq. m. was greater than the 6.9 gm / sq.m. contributed by perennial graminoids. <br />Shrub density in the understory of thts forested stand (Table 7) averaoed 18.3 stems / 50 sq.m. <br />(1481 stems /acre). The major portion of this total (14.4 stems / 50 sq.m.) was subalpine <br />fir saplings. The scattering of actual shrubs comprised only 3.9 stems / 50 sq.m. (3I6 stems / <br />acre). Species contributing to this scent total were mountain maple, Saskatoon serviceberry, <br />mountain lover, trumpet gooseberry, Woods rose, and mountain snowberry. <br />Tree density in the Conifer vegetation type (Table 8) averaged 1 1 1.6 slams / 250 sq.m. (1807 <br />stems /acre). Height of the dominant subalpine fir trees was consistently 15 to 16m. In the <br />largest dbh class present (50 -60 cm ),ewes were 90 to 100 years. A somewhat smeller 39 <br />cm dbh fir was 80 years old. In the abundant dbh range of 20 to 25 cm, ages were about 60 <br />years, while in the range of 10 to 15 cm dbh, ages were 29 to 36 years. <br />• <br />3.1.3 MEADOW <br />Throughout the study area, this vegetation type varied from a wetland heavily dominated by <br />sedges to a moist valley bottom dominated by Kentucky bluegrass and redcap (AOrostis elba), as <br />well es locally abundant weedy species such 6v hound's tongue (Gynoalossum officinale), Canada <br />thistle (Cirsium arvense), end f lodman thistle (Cirsium incanum ). As mentioned above, cattle <br />grazing end sediment pond construction had resulted in extensive damage to this vegetation type <br />in the study area, necessitating location of samples intended to represent this type in a protected <br />portion of the type inside the existing Seneca II Mine permit oreo (Figure 5). In this particular <br />location, the meadow was dominated by sedges. Cover was primarily accounted far by perennial <br />graminoids which comprised 77.4 cover out of a total vegetation cover of 80.4% (Table 9). <br />The most plentiful perennial graminoids were Nebraska sedge (Carex nebrascensis, 38.6 ~ <br />cover) and beaked sedge (Carex utriculate, 39.4 cover). Kentucky bluegrass and fowl <br />bluegrass were the only other greminoids to make up as much as 1 ~ or mare cover. Cover by <br />perennial fortis was a scent 2.8~, the only major contributions to which were made by Canada <br />• thistle end cornlily (Veratrum tenuioetalum). Only on a few high spots in the meadow were e <br />few trumpet gooseberry end Bebb willow (Selix cf. bebbiana) shrubs found. <br />-12- <br />
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