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33 <br />Table 8. Percent cover means (x) for the affected area and • <br />reference area of the Willow Carr vegetation type. Allen Mine, <br />CFBI Steel Corporation, July -August, 1981. <br />Affected Reference <br />Species or Area Area <br />Category X X <br />Grasses <br />Bromus ciliatus 0.2 0.2 <br />Carex spp. 4.2 3.2 <br />Juncus spp. 1.5 1.0 <br />r"haZaris arundinacea -- 1.3 <br />Poa pratensis 3.2 -- <br />Poa spp. 1.3 -- <br />Stiva robusta -- 0.5 <br />Forbs <br />Annual Forbs <br />0.3 <br />-- <br />Perennial Forbs <br />-- <br />0.2 <br />AchiZZea miNefoZium <br />0.4 <br />-- <br />Ambrosia trifida <br />2.3 <br />-- <br />Arctium minus <br />2.3 <br />4.3 <br />Artemisia dracunculus <br />-- <br />5.2 <br />Cirsium arvense <br />4.2 <br />4.5 <br />Cirsium f7o6nanii <br />0.3 <br />0.6 <br />CynogZossium officinale <br />2.6 <br />5.4 <br />Ericeron formosissimus <br />0.1 <br />1.3 <br />Geum macrophyZLum <br />1.1 <br />-- <br />Humulus Zupulus <br />1.9 <br />-- <br />Lactuca tatarica <br />-- <br />0.5 <br />Ligusticum porteri <br />1.1 <br />-- <br />Linaria vuLgaris <br />3.9 <br />11.6 <br />hlentha spicata <br />0.5 <br />-- <br />Mertensia spp. <br />5.8 <br />-- <br />Potentilla hippiana <br />0.2 <br />-- <br />Rudbeckia hirta <br />0.5 <br />-- <br />Scrovhular-,a Zanceolata <br />-- <br />-- <br />Smiiacina stellata <br />0.8 <br />-- <br />SoZidaco altissima <br />9.7 <br />1.8 <br />Verbena stricta <br />0.5 <br />0.6 <br />Viguiera muLti.Zora <br />0.2 <br />0.3 <br />Shrubs <br />Rosa woodsii 1.1 0.4 <br />SaZi: exigua 4.9 3.3 <br />------------------------------------ <br />------------------------------_------ <br />X s X s <br />Total Plant Cover <br />Litter and Rock Cover <br />Bare Ground <br />43.1 <br />19.7 <br />58.6 <br />13.6 <br />11.2 <br />16.1 <br />36.8 <br />15.5 <br />67.5 <br />13.1 , <br />12.0 <br />12.7 <br />Plant, Litter and Rock Cover <br />62.9 <br />13.3 <br />52.3 <br />19.3 <br />