2017-06-07_PERMIT FILE - C2010089A (2)

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total relative cover found on this area. Noxious weeds contributed 8.18 percent of the total plant cover and 11.57 percent of the total relative cover found on this area. Native shrubs contributed 0.73 percent of the total plant cover and 1.03 percent of the total relative cover found on this area. Annuals and biennials contributed 0.20 percent of the total plant cover and 0.28 percent of the total relative cover found on this site. Alfalfa, a planted introduced perennial forb was the most dominant plant species encountered, contributing 22.87 percent of the total relative plant cover found on this site. The other dominant plants encountered were: Smooth Bromegrass, Tall Fescue, Orchardgrass and Kentucky Bluegrass which contributed 16.21, 13.27, 12.21 and 5.42 percent, respectively, of the total relative cover on this area. The locations of the 40 cover transects sampled in the Irrigated Pasture predisturbance area are shown on Map 2.04.10-1. The sample adequacy calculations in Table 2.04.10-2, document that the number of samples required to describe this site at the 90 percent confidence interval was 2.7 transects. Production The results obtained from the sampling of 69 production transects on this area are summarized in Table 2.04.10- 10. This table shows that the herbaceous forage production equaled 92.18 g/1/4 m2 or 3,285.3 pounds of air dry -dry forage per acre. Perennial grasses contributed 64.98 g/l/4 m2 or 70.49 percent of the herbaceous forage produced. Perennial forbs, contributed 27.20 g/l/4 m2 or 29.51 percent of the herbaceous forage production. The locations of the 69 production transects sampled for this site are shown on Map 2.04.10-1. The sample adequacy calculations in Table 2.04.10-2, document that the number of samples required to describe this site at the 90 percent confidence interval was 41.8 transects. Shrub Density The shrub density counts obtained from the 15 belt transects sampled in this vegetation type are summarized in Table 2.04.10-11. The average shrub density was determined to equal 1.63 shrubs per one hundred square meters or 65.9 shrubs per acre. Sandbar Willow, Nutka Rose, Russian Olive, Rubber Rabbitbrush, Siberian Elm and River Hawthorn were the only shrubs encountered. The locations of the 15 shrub density transects sampled in the Irrigated Pasture predisturbance area are shown on Map 2.04.10-1. Examination of the sample adequacy calculations in Table 2.04.10-2, reveals the number of samples required to describe the shrub density on this area at the 90 percent confidence interval was 679.9 transects. Section 2.04. 10 Page 18 of 36 June 2016 (TR -14)