Laserfiche WebLink
Species Diversity <br /> <br /> <br />Four lifeforms were represented on this treatment plot. They included two perennial <br />grasses, one annual grass, two annual forts, and three woody plants. Of these, two <br />perennial grasses, one annual grass, one annual fort, and three woody plants <br />represented species with greater than three percent relative cover. <br />3.4 Test Plot 3 <br />3.4.1 Test Plot 3: 6" <br />Cover <br />Vegetation cover comprised 31.6% in this treatment. Graminoid species accounted for <br />27.2%, annual forts for 3.2%, and woody plants 1.2%. Cryptogams were not present. <br />Litter accounted for 17.2% total cover, rock 3.6%, and bare ground 47.6%. Cover <br />results for this treatment are presented in Table 17. <br />Grass species were dominated by Bromus japonicus/tectorum at 26.4% mean cover <br />(83.1 % relative cover). FJymus junceus represented the only other grass species <br />present with 0.8% mean and 2.5% relative cover. Fort species included the annuals <br />Ceratocepha/a orthoceras and Chorispora tenella comprising 2.4`% mean cover (7.5% <br />relative cover) and 0.8% mean (2.5% relative cover) respectively. The single woody <br />plant represented in cover sampling was Atriplex confertifolia at 1.2% mean wver and <br />4.4% relative wver. <br />Herbaceous Production <br />Total herbaceous production on this treatment plot was 67.9 g/m2 (604.31 ib/ac). <br />Bromus japonicus/tectorum dominated herbaceous production with 34.50 g/m2 or <br />50.8°6 of total production. Agropyron cristatum, FJymus junceus, and a Festuca <br />species accounted for herbaceous production of 7.2 g/mz or 10.6% of total production. <br />The five annual forts produced 23.82 g/m2 or 35.1% of the herbaceous production. <br />Notable was the small Ceratocephala orthoceras, accounting for 16.46 g/m2. Table 18 <br />lists herbaceous production results for this treatment. <br />Woody Plant Density and Dimensions <br />Thirty six woody plants were counted on this plot for a density of 523/acre. Five <br />species were present. Predominant was Atriplex confertilolia, followed by <br />Chrysothamnus nauseosus, Arremesia tridentata, Sarcobatus 4ermiculatus, and Atriplex <br />canescens. The largest woody plant was an Atriplex canescens individual measuring <br />102 cm high and 100 cm in diameter. <br />38 <br />