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(10)SPRINGFIELD 7 WSW[USC00057866],Baca County CO 81073.Period of record 1981-2010
<br /> (11)LIMON WSMO[USW00093010],Lincoln County CO 80828.Period of record 1981-2010
<br /> Influencing Water Features
<br /> There are no water features of the ecological site or adjacent wetland/riparian regimes that influence the vegetation and/or management of
<br /> the site that make it distinctive from other ecological sites.Many of the map units in this ESD have a 1%to 3%hydric component for swales,
<br /> drainageways,or playas.
<br /> Representative Soil Features
<br /> The soils on this site are very deep,well to somewhat excessively drained soils that formed from eolian sand or alluvium.They typically
<br /> have a moderately rapid to moderately slow permeability class,but range to slow in some soils.The available water capacity is typically low.
<br /> Available water is the portion of water in a soil that can be readily absorbed by plant roots.This is the amount of water released between the
<br /> field capacity and the permanent wilting point.As fineness of texture increases,there is a general increase in available moisture storage
<br /> from sands to Ioams and silt Ioams.The soil moisture regime is typically aridic ustic.The soil temperature regime is mesic.
<br /> The surface layer of the soils in this site are typically sandy loam or fine sandy loam,but may include loamy sand.The surface layer ranges
<br /> from a depth of 4 to 9 inches thick.The subsoil is typically sandy loam,fine sandy loam,or sandy clay loam,but may include loamy sand.
<br /> Soils in this site can have free carbonates below 6 inches.These soils are susceptible to erosion by wind.The potential for wind erosion
<br /> accelerates with a decrease in vegetative cover,clay percentage,and/or particle size.
<br /> Surface soil structure is granular to subangular blocky,and structure below the surface is prismatic or subangular blocky.Soil structure
<br /> describes the manner in which soil particles are aggregated and defines the nature of the system of pores and channels in a soil.Together,
<br /> soil texture and structure help determine the ability of the soil to hold and conduct the water and air necessary for sustaining life.
<br /> Major soil series correlated to this ecological site include:Ascalon(loamy sand or sandy loam),Bijou,Blakeland,Bresser,Gilcrest,Haxtun,
<br /> Julesburg,Manter,Olnest,Otero,Paoli,Truckton,and Vona.
<br /> Other soil series that have been correlated to this site,but may eventually be re-correlated include:Eastonville,Fort Collins(sandy loam),
<br /> Haverson(sandy loam),Nunn(sandy loam),Olney,Platner(sandy loam and fine sandy loam),Stoneham(sandy loam),Sundance(sandy
<br /> loam),and Weld(sandy loam).
<br /> The attributes listed below represent 0-40 inches in depth or to the first restrictive layer.
<br /> Note:Revisions to soil surveys are on-going.For the most recent updates,visit the Web Soil Survey,the official site for soils information:
<br /> http://websoilsurvey.nres.usda.gov/app/WebSoilSurvey.aspx
<br /> Parent materials
<br /> Kind:Eolian sands,Alluvium
<br /> Surface texture:(1)Sandy loam
<br /> (2)Loamy sand
<br /> (3)Fine sandy loam
<br /> Minimum Maximum
<br /> Surface fragments<=3"(%cover): 0 0
<br /> Surface fragments>3"(%cover): 0 0
<br /> Subsurface fragments<=3"(%volume): 0 5
<br /> Subsurface fragments>3"(%volume): 0 0
<br /> Drainage class:Well drained to somewhat excessively drained
<br /> Permeability class:Moderately slow to moderately rapid
<br /> Minimum Maximum
<br /> Depth(inches): 80 80
<br /> Available water capacity(inches): 3.00 6.00
<br /> Electrical conductivity(mmhos/cm): 0 2
<br /> Sodium adsorption ratio: 0 5
<br /> Calcium carbonate equivalent(percent): 0 10
<br /> Soil reaction(1:1 water): 6.6 8.4
<br /> Soil reaction(0.01M CaC/2): 6.0 7.9
<br /> Plant Communities
<br /> Ecological Dynamics of the Site
<br /> The information in this ESD,including the state-and-transition model diagram(STM),was developed using archeological and historical data,
<br /> professional experience,and scientific studies.The information is representative of a dynamic set of plant communities that represent the
<br /> complex interaction of several ecological processes.The plant composition has been determined by study of rangeland relic areas,areas
<br /> protected from excessive disturbance,seasonal use pastures,short duration/time controlled grazing strategies,and historical accounts.
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