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12/9/2019 ESD Printable Report <br /> in minor amounts.Other minor grasses and grass-likes are Indian ricegrass,galleta,littleseed ricegrass,Indiangrass and sun sedge).Trees <br /> such as oneseed juniper and pinyon pine are present in minor amounts. <br /> Recurring seasonal herbivory without adequate recovery periods following each grazing occurrence,will initially cause sideoats grama,little <br /> bluestem,big bluestem,Indiangrass,prairie sandreed,sand bluestem,switchgrass,palatable forbs and shrubs to decrease in frequency and <br /> production.Grasses and grass-like plants such as blue grama,black grama,hairy grama and threadleaf sedge will increase. If adequate <br /> recovery periods between grazing events are not allowed during the growing season,blue grama will begin to dominate the plant community. <br /> Mid and tall grasses can eventually be removed from the plant community.Over the long-term,continuous use without adequate recovery <br /> opportunity between grazing events will cause species such as red threeawn,sand dropseed,small soapweed,broom snakeweed, <br /> wormwood,pricklypear cactus and cheatgrass to increase or invade.Oneseed juniper is usually present in small amounts and can increase <br /> with continuous grazing disturbance and/or lack of fire. <br /> Drier and warmer climatic conditions exist in the central portion of MLRA-69(LRU A).This area includes the eastern half of Pueblo county, <br /> northern Otero,extreme northwestern Bent,western edge of Kiowa,southern edge of Lincoln and all of Crowley County.These conditions are <br /> primarily caused by a rain shadow effect from the southern Rocky Mountains.Evapotranspiration rates(atmospheric demand)will be higher in <br /> LRU A and total annual production will typically be lower. <br /> The reference plant community(description follows the State-and-Transition Diagram)has been determined by study of rangeland relic areas, <br /> areas protected from excessive disturbance,seasonal use pastures,short duration/time controlled grazing and historical accounts. <br /> The following is a diagram that illustrates the common plant communities that can occur on the site and the transition pathways(arrows) <br /> among communities.Bold lines surrounding each plant community or communities represent ecological thresholds.The ecological processes <br /> will be discussed in more detail in the plant community descriptions following the diagram. <br /> State-and-Transition Diagram <br /> https://esis.se.egov.usda.gov/ESDReportlfsReportPrt.aspx?id=R069XY053C0&rptLevel=all&approved=yes&repType=regular&scrns=&comm= 5/19 <br />