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<br />1 <br />Herbaceous production, when considered by lifeform and species showed some trends <br />' in Test Plot 1 (Tables 4, 6, S, and 10). Bromus japonicas/tectorum showed a decrease <br />in relative production with increasing soil depth to 24" (54.5% 6", 31.4% 12", 19.3% <br />' 24"), while perennial graminoids show a corresponding increase over the same <br />treatment depths (5.3% 6", 64.9% 12", 80.4% 24"). As with cover, annual forts <br />vary in relative production from 19.4% (24") to 40.2% (6"). <br />' Test Plot 2 herbaceous production values (Tables 12, 14, and 16) showed the same <br />general vends found in Test Plot 1. Bromus japonicas/tectorum relative production <br />showed a decrease over soil depth from 69.2% (6") to 31.5% (24"). Perennial grasses, <br />represented primarily by .~gropyron cristatum and Elymus junceus, showed a marked <br />increase with soil depth in the treatment plots from 20.7% relative production (6") to <br />60.1% relative production (24"). Annual forts accounted for between 8.440 and <br />18.6% relative production on Test Plot 2. <br />' The general herbaceous production trends identified in Test Plots 1 and 2 continued in <br />Test Plot 3 (Tables 18, 20, and 22). With the exception of the 12" treatment plot, <br />Bromus japonicas/tectorum relative production decreased with increasing soil depth <br />(50.8% 6", 64.1 % 12", 42.4% 24"). Perennial grass relative herbaceous production <br />increased over soil depth, led by E/ymus junceus which increased from 4.9% relative <br />' production (6") to 13.5% (24"), and ,~gropyron cristatum in the 6" and 12" depths <br />(5.240 to 16.5% relative production). Annual forts contributed significantly to total <br />herbaceous production (17.3% to 38.6% relative herbaceous production) in this Test <br />' Plot. <br />As with cover, the North and South Areas (Tables 24 and 26) were closest in <br />' herbaceous production value to the Test Plot which most closely approximated their <br />aspect. The North Area, with 120.24 g/ sq m was similar in total value to Test Plot 3 <br />(intermediate between the values of the 6" and 12" treatments). The South Area was <br />' very close in value (64.4 g/ sq m) to the Test Plot 2 6" treatment. <br />The Shadscale Shrubland Reference Area was represented by more herbaceous species <br />' in production sampling than cover sampling (Table 28). While Bromus <br />japonicas/tectorum remained the dominant in herbaceous production (88.16 g/sq m and <br />1 89.8% relative production), four perennial grasses accounted for 4.8% relative <br />production. Two species, Aristida purpurea and Sitanion hystrix, were not encountered <br />elsewhere in sampling. Annual forts of the same species present in the Test Plots <br />accounted for a relatively low 5.4% of relative production. <br />1 <br />' S3 <br />