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-3- <br /> <br />MEPk10DS <br />SAMPLE DFSICd4 <br />A field reconnaissance was performed in May, 1979 to determine the boun- <br />daries of all affected areas, determine the number of different vege- <br />tation types which would require sampling and identify reference sites <br />for each vegetation type in areas not to be disturbed by future mining <br />activity. Five vegetation types occur within the study area: these <br />are upland sagebrush, grassland pasture, juniper, riparian and agricul- <br />total (hay meadow). A brief description of each type follows: <br />1. Upland sagebrush - Artartisia tridentata (Basin big sagebrush) dour <br />inated ~mmu~ities occurring on well-drained slopes that because of <br />shallow soils have not been converted to agricultural production. <br />• <br />2. Grassland (pasture) - Areas of abandoned pasture ~~rised largely <br />of wheatgrass (Agropyron sp.), brome (Bromus sp.), fescue (Festuca sp.), <br />plantain (Plantago sp.) and alfalfa (Medicago sativa). <br />3. Agriculatural - Primarily monocultures of alfalfa. <br />4. Juniper - A small cornrnu~.ity of Utah juniper (Juniperus ostecsperma) <br />occurring within the agricultural type. <br />5. Riparian - A small mnzmuiity along an irrigation ditch characterized <br />by comTnn cattail (~ latifolia) and baltic rush (Juncos balticus). <br />Several narrovrleaf ~ttonwood (Populus angustifolia), plains cottonwood <br />(Populus sargentii), Chinese elm (Ulmus parviflora) and saltcedar <br />tamarisk (Tamarix pestandara) trees occurred along this type. <br />• <br />The agricultural hay meadow was rot quantitatively sampled to obtain vege- <br />tative rover and production estimates. Wyoming DEQ re~nmends that in cases <br />where crops are taken each year, quantitative vegetative sartq~ling is unneces- <br />sary since the species composition, mover and production of cultivated <br />areas can be ascertained in other ways such as interview of the farmer, <br />n ~. <br />