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Shallow sandy, ungrazed BOER, CDRRC

Ecological site R042BB012NM

Sandy, Desert Shrub

Home / Esd catalog / MLRA 042B / Ecological site R042BB012NM
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T1a - State 1 to 2: Mesquite establishment facilitated by seed transport by cattle, bare patches > 50 cm, and relatively wet springs.
T1b - State 1 to 3: Black grama is reduced to ca. 5% foliar cover by heavy grazing in drought.
R1 - State 2 to 1: Shrub removal via herbicide (possibly fire) followed by black grama recovery.
T2a - State 2 to 3: Black grama is reduced below ca. 5% foliar cover by heaving grazing in drought.
T2b - State 2 to 4: At perennial grass cover <5%, wind and storm events trigger deep, spreading soil erosion.
T3a - State 3 to 4: At perennial grass cover <5%, wind and storm events trigger deep, spreading soil erosion.
T3b - State 3 to 5: Invasion and spread of Lehmann lovegrass.
T4a - State 4 to 6: Sequences of wet years lead to colonization of bunchgrasses.
T6a - State 6 to 4: Drought or overgrazing leads to widespread mortality of bunchgrasses.