Laserfiche WebLink
:,. ~: <br />• • F <br />/gar Page 2 #232 . <br />77` 3. Potential Plant Community (Native Vegetation) <br />a. The plant community is about 60 to 75 percent grass, 10 to 20 <br />percent forbs, and 5 to 15 percent shrubs air-dry weight. <br />The production is predominantly made up of Arizona fescue, <br />mountain muhly, Indian ricegrass, western wheatgrass, blue grama, <br />and needleandthread grass. Dominance, however, varies with <br />aspect. North facing slopes are dominated by Arizona fescue while <br />south faring slopes are dominated by mountain muhly, blue grama, <br />Indian ricegrass, and needleandthread, Depressional areas <br />included within the site are dominated by western wheatgrass. <br />Windswept, droughthy ridge tops are dominated by poor vigor blue <br />grama and slimstem muhly and low growing mat or cushion type forbs <br />such as Nuttall kentrophyta milkvetch, matted nailwort, and <br />germz,nder penstemon. Other forbs that make up the plant community <br />include Parry geranium, sidebells penstemon, Pacific aster, and <br />hairy goldaster. <br />Shrubs that occur on this site are gray horsebrush, fringed sage, <br />small rabbitbrush, small soapweed, and shrubby cinquefoil. Gray <br />horsebrush is dominant over the maJOrity of the site. Fringed <br />sage dominates in the depressional areas which have received <br />recent deposition from erosion, Shrubby cinquefoil occurs at the <br />lower edges of exposed bedrock where it receives additional <br />moisEure from runoff. <br />b. 17elative percentage of total plant community by weight, air- <br />dry: <br />PLANT COMP. <br />SYME30L COMMON NAME SCIENTIFIC NAME 1/ PERCENT <br />a.***+*,t ,r,ta.**,k*~***~* *+tr,F+*a.#k~+r,Fa.~,t~r~ *+~w,k+** <br />GRASS AND GRASSLIKE PLANTS <br />FEAR2 ARIZONA FESCUE FESTUCA ARIZONICA 5 20 <br />ORHY INDIAN RICEGRASS ORYZOPSIS HYMENDIDES S 15 <br />E30GR2 BLUE GRAMA BOUTELOUA GRACILIS S 10 <br />MUMO MOUNT,4IN MUHLY MUHLENBERGIA MONTANA 5 10 <br />STC04 NEEDLE=ANDTHREAD STIPA COMATA 5 10 <br />AGSM WESTERN WHEATGRASS AGROPYRON SMITHII 5 10 <br />KOPY PF!AIRIE JUNEGRASS KOELERIA PYRAMIDATA 2 5 <br />SIHY BOTTLEBRUSH SQUIRRELTAIL SITANION HYSTRIX 2 4 <br />MUFI SL.IMSTEM MUHLY MUHLENBERGIA FILICULMIS 1 2 <br />SPCR SAND DROPSEED SPOROBOLUS CRYPTANDRUS 0 2 <br />ARFE4 FENDLER THREEAWN ARISTIDA FENDLERIANA 0 1 <br />