Page 228 - Interp Book
P. 228

No.
                                                                                                                                                                                                     No.       Ground
                                                                                                                                                                                                   Original     truth
                                         Mapped Type Name                                        Brief Description                                    Area (HA)       Area (AC)       Percent      Samples    Samples

                                                                This type is mapped in broken landscapes associated with weathering of sedimentary
                                                                rocks where patches or layers of gyp are common in the landscape.  Small (10 sq m to
                                                                200 sq m), open, sparsely vegetated patches or layers of gyp on slopes are common.
                                                                Short and mid-grasses such as sideoats grama, blue grama, hairy grama, little bluestem,
                                                                cane bluestem, sand dropseed, and annual bromes are also common.  Forbs common
                                         Canyon: Gyp            in the modern landscape include broom snakeweed, common broomweed, stiff                 67,378.6       166,495.8       0.372%           32         10
                                         Grassland
                                                                greenthread, Navajo tea, Indian breadroot, stemmy four-nerve daisy, sundrops species,
                                                                and western ragweed.  Important shrubs may include skunkbush sumac, lotebush,
                                                                mesquite (within range), and Mohr shin oak.  Succulents such as soapweed yucca,
                                                                pricklypear, and Christmas cactus may be present.  Pinchot's juniper, or less commonly,
                                                                eastern redcedar may be present.



                                                                This type is mapped in broken landscapes associated with weathering of sedimentary
                                                                rocks where patches or layers of gyp are common in the landscape.  Small (10 sq m to
                                                                200 sq m), open, sparsely vegetated patches or layers of gyp on slopes are common.
                                         Canyon: Gyp Juniper    Pinchot's juniper is the most common dominant, but eastern redcedar may be locally
                                         Shrubland              important.  Other woody species may include sumac species, lotebush, mesquite (within     9,413.6        23,261.4       0.052%            2           5
                                                                range), soapberry, sugar hackberry, gum bumelia, and Siberian elm.  Short and mid-
                                                                grasses such as gramas, little bluestem, cane bluestem, and annual dropseeds are
                                                                important, along with forbs such as broom snakeweed and common broomweed.




                                                                This type is mapped in broken landscapes associated with weathering of sedimentary
                                                                rocks where patches or layers of gyp are common in the landscape.  Small (10 sq m to
                                         Canyon: Gyp            200 sq m), open, sparsely vegetated patches of gyp are common.  This type is often        7,184.6        17,753.6       0.040%            4           2
                                                                mapped low on the landscape at the base of slopes or on canyon bottoms.  Mesquite is
                                         Mesquite Shrubland
                                                                the most common dominant, and species such as lotebush, Pinchot's juniper, eastern
                                                                redcedar, soapberry, and sugar hackberry may be present.  This type may be more or
                                                                less open, with elements of the Canyon: Gyp Grassland common.


                                                                This type is mapped in broken landscapes associated with weathering of sedimentary
                                         Canyon: Gyp            rocks where patches of open gyp with bare rock or bare ground or sparse vegetation          211.0           521.3       0.001%            0           0
                                         Sparsely Vegetated     occur over fairly extensive areas (>1000 sq m).  Herbaceous and shrubby elements of
                                                                other Canyon: Gyp types may be present.












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