Laserfiche WebLink
.~ <br />1, <br />P° <br />x <br />E <br />-3- <br />Symbol Common Name <br />Shrubs <br />Gravel Breaks x/64 <br />Scientific Name percent <br />ARBI3 Bigelow sagebrush Artemisia bigelovii 0-3 <br />XASA* broom snakeweed Xanthocephalum sarothrae 0-1 <br />ATCA2 fourwing saltbush Atriplex canescens 0-T <br />ARFR4 fringed sagebrush Artemisia frigida 0-T <br />CHNAG2* green plume rabbitbrush Echinocerus viridiflorus 0-2 <br />OPPO plains pricklypear Opuntia polyacantha (4) 0-T <br />ATCO shadscale Atriplex confertifolia 0-T <br />RHTR skunkbush sumac Rhus trilobata (4) 0-5 <br />YUGL small soapweed Yucca glauca 0-1 <br />EREF spreading eriogonum Eriogonum effusum 0-1 <br />OPIM* walkingstick cholla Opuntia imbricata 0-T <br />Note: *Symbol not listed in National List of Scientific Plant Names. <br />c. If ecological retrogression is cattle-induced, desirable grasses <br />will decrease. If retrogression is sheep-induced, desirable <br />forbs and shrubs will decrease. Side-oats grama, and little <br />bluestem will decrease while galleta and blue grama increase. <br />Bigelow sagebrush tends to increase as the desirable-grasses are <br />reduced. plains pricklypear, broom snakeweed, green plume <br />rabbitbrush, small soapweed, red threeawn and sand dropseed will <br />dominate the site as retrogression proceeds. <br />d. Vegetation densityl/ 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 contras[ to the full spread of perennial <br />foliage. <br />4. Annual Production <br />If the range is in excellent condition, the approximate total annual <br />production (air-dry) is: <br />favorable years 1,600 pounds/Ac 1,814 Kg/Ha <br />normal years 800 pounds/Ac 907 Kg/Ha <br />unfavorable years 400 pounds/Ac 454 Kg/Ha <br />Of this production 15 percent will likely be unpalatable or out of <br />reach. to gracing animals. <br />.~' <br />