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• Shrubs contribute over 80 percent relative vegetation cover. <br />Gambel oak is the overwhelming dominant, with 52.8 percent absolute cover. <br />Common shrubs are mountain snowberry (Symphvaico~pva urteuphi.iual with 3.6 <br />percent, conmon chokecherry (laurwa viag.irtiarto) with 3.1 percent, and squaw- <br />apple IPeaaphyllum zomvei~eimuml with 3.1 percent. Less common species include, <br />in descending order, true mountain mahogany fCencvca2pun mvntaw~l, skunkbush <br />sumac I%Zhu~ LciLvGa#al, cliff fendlerbush Ihertdle~o ~upicvla), myrtle pachistima <br />laachi~t(mo m~irti#eal, big sagebrush IAatemi~io t2idvnto#ol, Colorado barberry <br />ILieabeni~ ,Cendle.u 1 , Oregon-grape IMahurtia aepert.~l , and Woods' rose I%2v4a <br />vvod.~i i I . <br />Perennial graminoids account for 8.5 percent of the vegetation <br />cover. The most common species are Indian ricegrass (Ony~vp~ia hymenvideal <br />and mutton bluegrass l%va ~endlen,iartal with 1.9 percent absolute cover each. <br />Minor species present are, in descending order, Kentucky bluegrass 1%va <br />p~ta#en~ial , smooth brome (lj~~mopai~ ineiuni~l , elk sedge (Caaex geyeni 1 , <br />squirreltail (Si#artivrt ion9i~oliuml, slender wheatgrass (Agicvpynort #nach~cauduml, <br />and littleseed ricegrass IOrty~vp~i~ micnart.thal. <br />Trees are scattered throughout Mountain Shrubland and account for <br />5.1 percent relative cover. Pinyon pine I~irtu~ edu.li~l is prevalent with <br />3.8 percent absolute cover, while Utah juniper l~'un.ipeau~ u~#evape~unal pro- <br />vides only 0.8 percent. <br />Numerous perennial forb species are scattered throughout this <br />• vegetation type, although they account for little cover. The more common <br />species are, in descending order, toadflax penstemon 1lo~#emvn Lirtoaivide~l, <br />starry solomonplume lSmi.lac.lna a#e.l1a#al, showy goldeneye IHe.(ivmenia mu.!#i- <br />~.lvaal, stemless actinea lHymenvxy.~ acau.lial, aspen peavine ILo#hyicua <br />.leucan.thu~ 1, and scar l e t g l obema 1 1 ow l Sphoena.lcea cvcc.inea 1. <br />Annual fortis account for very little cover. The more abundant <br />species include ragleaf Bahia ll3ahio di~~ectol, yellow salsify (%rtogvpvgun <br />duGiu~l, and American false-dragonhead IAIuldavica poavi~lv.xal. <br />Succulent cover is very low, and is comprised entirely of datil <br />yucca lyucca Gacca#ol. Other succulents present are plains pricklypear <br />IOpurt,tia pv.lyoconthol and New Mexican yucca (yucca nevmexicanal. See <br />Table 3 for additional minor plant species. <br />Production <br />Total herbaceous production for the Mountain Shrubland affected <br />area averages 14.6 g/2 m2 or only 65.1 Ibs/acre. The heavy cover by tall <br />shrubs severely limits herbaceous production by shading and root competition. <br />Perennial graminoids account for over Half the production with 8.0 y/2 m2. <br />The major graminoid producer=_ are mutton bluegrass and Indian ricegrass with <br />4.3 and 2.2 g/2 m2, respectively, Perennial fcrb production averages <br />6.0 g/7 m2. Annual forb production is low, native znnuzls produce 0.4 g/2 m2 <br />and introduced annuals produce 0.1 g/2 m2. Broom =_nakeweed, a subshrub, <br />averages 0.1 g/2 m2. See ?able 4. <br />• <br />-9- <br />