The Effects of disturbance on The Effects of disturbance on desert soils, vegetation, and community processes with emphasis on off-road vehicles : a critical review effectsofdisturb00rowl Year: 1980 FIGURE AVERAGE DENSITY OF SUMMER ANNUALS in Response to Different Compaction Treatments O Control Treatment SITE 1 Stoddard Valley September 1978 Bouteloua barbata CM E •-o CN o c G <o re - < 0 1 5 7 10 Number of Passes 20

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