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• EXHIBIT .J -VEGETATION INFORMATION <br />The mapped vegetation types of the Dowe Flats permit area are shown on the Exhibit J Map. <br />These were mapped from aerial photos (U.S. Geological Survey NHAP 1983, scale - 1:40,000). <br />Vegetation of the Area to be Disturbed <br />Vegetation of the azea to be disturbed by the mining is comprised of four types: <br />• Improved pasture <br />• Hay pasture <br />• Cultivated land <br />• Grassland along "Limestone Ridge" <br />• Improved Pasture areas were probably once cultivated and were then plan ussian wildrye <br />(Elymus junceus). These areas aze heavily used by cattle and extensive y o1~ccupi~3y <br />black-tailed prairie dogs. Between these animal ergrazin pronounced and, to varying <br />degrees, various other plants of weedy character have invaded these lands. Invaders include <br />snakeweed (Xanthocephalum sazothrae), musk thistle (Cazduus nutans), Canada thistle (Cirsium <br />arvense), common bindweed (Convolvulus arvensis), and the native plains prickly poppy <br />(Argemone pQyanthemos). <br />Hay Pasture is irrigated land that has been planted to such domestic forage grasses as smooth <br />brome (Bromopsis inermis), orchazd grass (Dactylis glomerata), common timothy h(P leum <br />pratense), and/or tall fescue (Festuca arundinacea). These lands aze mowed for hay during the <br />growing season and may later experience grazing after the growing season. <br />Cultivated Land is mostly managed for the production of small grains, especially winter wheat <br />and oats, but occassionally corn. Most of it is handled in a strip rotation pattern; periodically, <br />alfalfa is rotated in to improve soil fertility and tilth. <br /> <br />