Laserfiche WebLink
' -3- Gravelly Foothill 1k214 <br />Symbol Common Name Scientific Name Percent <br />• .. ~~ <br />Forbs <br />THFI Colorado greenthread Thelesperma filifolum 0-T <br />LIPU dotted gayfeather Liatris punctata T-2 <br />ASDR3 Drummond milkvetch Astragalus drummondii T-1 <br />ZYPA foothill deathcamas Zi(y)gadenus panicula[us 0-T <br />DEGE2 Geyer larkspur nelphinium geyeri T-3 <br />HEVI4* hairy goldaster Heterotheca villosa 0-T <br />SPGO scarlet globemallow Sphaeralcea coccinea (3) T-1 <br />FSTE3 slimflower scurfpea Psoralea tenuiflora 0-1 <br />HYAC stemless actinea Hymenoxys acaulis (4) 0-T <br />ARDR4 wormwood Artemisia dracunculus 0-1 <br />CALI4 Wyoming paintedcup Castille,ja linariaefolia 0-T <br />Shrubs and Half-Shrubs <br />XASA* broom snakeweed Xanthocephalum sarothrae 0-T <br />ARFR4 fringed sagebrush Artemisia frigida T-2 <br />bPPO plains pricklypear Opuntia polyacantha (4) 0-1 <br />YUGL small soapweed Yucca glauca 0-1 <br />EREF spreading eriogonum Eriogonum effusum T-1 <br />*Symbol not listed in National List of Scientific Plant Names. <br />• ~~ c. If ecological retrogression is cattle-induced,, desirable grasses <br />will decrease. However, if retrogression is sheep-induced, <br />desirable forbs and shrubs may be reduced. Deterioration of <br />this site caused by overgrazing of cattle will decrease the <br />percentage of grasses such as prairie sandreed, little bluestem, <br />needleandthread, sideoats grama, mountain muhly, plains muhly. <br />With the decrease of above mentioned plants blue grama, sand <br />dropseed, red threeawn, sun sedge, western wheatgrass and <br />thickspike wheatgrass will increase initially. Forbs will <br />increase such as dotted gayfeather and wormwood; and shrubs such <br />as fringed sagebrush and spreading eriogonum will also increase. <br />With continued ecological destruction, plants such as <br />sleepygrass, ring muhly, cheatgrass, kochia, and Russian thistle <br />will invade the site. <br />d. Vegetation densitpi~ is approximately 20 percent. , <br />1/ Vegetation density = basal area. This is the area of ground surface <br />covered by the perennial stem or stems. Usually, this is measured one <br />inch (2.54 cm) above the soil in contrast to the full spread of <br />_--- --- ~ perennial foliage. <br />• <br />