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Using the technical guide description, twenty percent of the total
vegetation will be a combination of sideoats grama, plains
bristlegrass, cane bluestem, Arizona cottontop and green sprangletop.
Ten percent will consist of a combination of bush muhly and black
grama. Sand dropseed will contribute to 10% of the total plant
community. The rest of the species contributing to the "climax" plant
community are listed in the table.
Table 2 summarizes the actual range condition of a loamy range site on a hypothetical ranch in west Texas. Sideoats grama, plains bristlegrass and cane bluestem made up 26% of the plant community. No Arizona cottontop or green sprangletop was found. Since only 20% of this combination is present in the "climax" community (Table 1), only 20% can be counted toward the condition score in the far right column (Table 2). A total of 10% of the "climax" plant community can consist of a combination of bush muhly and black grama (Table 1). Only 3% (2% + 1%, respectively) was present, thus only 3% is counted toward the condition score (Table 2).
Authors: Allan McGinty, Larry D. White |