Natural Resources
Conservation Service
Ecological site R077BY016NM
Very Shallow
Last updated: 9/11/2023
Accessed: 11/21/2024
General information
Provisional. A provisional ecological site description has undergone quality control and quality assurance review. It contains a working state and transition model and enough information to identify the ecological site.
Figure 1. Mapped extent
Areas shown in blue indicate the maximum mapped extent of this ecological site. Other ecological sites likely occur within the highlighted areas. It is also possible for this ecological site to occur outside of highlighted areas if detailed soil survey has not been completed or recently updated.
MLRA notes
Major Land Resource Area (MLRA): 077B–Southern High Plains, Northwestern Part
MLRA 77B is characterized by nearly level to gently sloping plains with a minimal number of playa depressions and moderately sloping breaks along drainageways. Loamy and sandy soils are generally deep and occur in a mesic soil temperature regime and ustic soil moisture regime bordering on aridic. Current land use is dominantly rangeland with minor cropland.
Classification relationships
This ecological site is correlated to soil components at the Major Land Resource Area (MLRA) level which is further described in USDA Ag Handbook 296.
Ecological site concept
The Very Shallow ecosite occurs over shallow soils on nearly level to moderately sloping narrow ridge tops or on the convex portion on small hills. These soils may be loamy to sandy. The reference vegetation consists of midgrasses and shortgrasses with scattered forbs and shrubs. Abusive grazing practices can lead to a decline in the more palatable species and a shift in the plant community. Without fire or alternative brush management activities, woody species canopy may increase across the site. This site may have up to 35 percent surface gravel present.
Associated sites
R077BY722TX |
High Lime 12-17" PZ Adjacent, downslope or upslope from the Very Shallow site. The soils are sandy to loamy in surface texture and very highly calcareous. Midgrasses dominate but some shortgrasses occur on this site. Production is higher than the Very Shallow site. |
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R077BY021TX |
Sandy Loam 12-17" PZ Adjacent and downslope from the Very Shallow site. The soils are fine sandy loam or sandy loam in surface texture. Midgrasses dominate but some tallgrasses occur on this site. Production is higher than the Very Shallow site. |
R077BY016TX |
Limy Upland 12-17" PZ Adjacent and downslope from the Very Shallow site. The soils are loam to clay loam in surface texture and highly calcareous. Shortgrasses dominate but a good mixture of midgrass occur on this site. Production is higher than the Very Shallow site |
Similar sites
R077AY013TX |
Very Shallow 16-22" PZ Similar to the Very Shallow site is the Very Shallow site in MLRA 77A. Mean annual precipitation is greater (16 to 22 inches). Production is higher than the Very Shallow site in MLRA 77B. |
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R077EY068TX |
Very Shallow 16-24" PZ Similar to the Very Shallow site is the Very Shallow site in MLRA 77E. Mean annual temperature is greater (59 to 63 degrees F). Mean annual precipitation is greater (16 to 24 inches). Production is higher than the Very Shallow site in MLRA 77B. |
Table 1. Dominant plant species
Tree |
Not specified |
---|---|
Shrub |
(1) Krascheninnikovia arborescens |
Herbaceous |
(1) Bouteloua curtipendula |
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