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-~ Oresslend <br />Over extensive portions of the north end west parts of the study area, grassland dominated by the <br />above species occurs. In general, locations further upslope (above the agricultural activities of <br />the valley bottom) ere less modified end less likely to be dominated lry Japanese brome or <br />cheatgrass. Some areas of grassland are heavily infested by noseburn (Treaia urticifolie). <br />Wetland <br />These areas have been described in a separate report (AWC 1987). <br />LAND USE UNITS <br />Pasture <br />I n this large area in the west central portion of Dowe Flats the native vegetation has been <br />replaced by inCroduced species for the purpose of improved livestock forage production. The <br />dominant species is Russian wildrye (E1Jmus iunceus); other locally important species are <br />intermediate wheatgrass (Aoroovron intermedium), standard crested wheatgress ( ro ron <br />• desertorum), end smooth brome (Bromoosis inermis). A variety of weedy species including <br />field bindweed (Convolvulus arvensis), fendler threeawn (Aristide fendleriana), end <br />rebbitbrush (Chrvsoihemnus neuseosus) have invaded the pasture which is used by cattle <br />during the growing season. Prairie dogs have established extensive towns in this unit end have <br />caused extensive denudation; field bindweed is especially abundant in the areas of heavy prairie <br />dog residence. <br />Cultivated <br />These lands are used for production of smell grains including wheat end corn. The lends are in e <br />rest -rotation scheme that leaves roughly half 1n fellow condition each year. <br />Smooth Brome Havlend <br />These lends have been planted to smooth brome for the purpose of producing hay. Locally, alfalfa <br />(Mediceao saliva), orcherdgress (Dactvlis alomereta), and timothy (Phleum pretense) <br />supplement smooth brome production. <br /> <br />