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from the cattail component. Both the willow and cattail components function primarily as <br />wildlife habitat (see Section 2.04.11, Fish and Wildlife Resources Information). The cover and <br />frequency sampling results for the graminoid component are summarized in Table 2.04.10 -9. <br />The individual plot data, from which the summary is derived, may be found in Attachment <br />2.04.10 -6, formerly Peabody Appendix 10 -2 (Table 2-11). <br />Total vegetation cover was estimated at 60.6 percent (Table 2.04.10 -9). The cover of litter and <br />bare ground was 88.5 and 0.7 percent, respectively. Hydrophytic graminoids comprised most <br />of the vegetal cover (54.4 percent total cover) followed by perennial forbs (2.6 percent total <br />cover), annual forbs (1.9 percent total cover) and shrubs (1.9 percent total cover). The <br />dominant graminoids in terms of both cover and frequency of occurrence included western <br />sedge ( Carex occidentalis threesquare ( Scirlus pungens and common spikerush <br />( Eleocharis macrostachya Other graminoids, such as redtop ( Agrostis alba Parry rush <br />( Juncus parryi and alkali muhly ( Muhlenbergia asperifolia were frequently encountered in the <br />sample, but contributed relatively less to total vegetation cover. A total of 14 species of <br />perennial graminoids were encountered in the sample. Cattail did not occur in any of the <br />randomly located sample plots, although this species occurs in the graminoid component as <br />scattered monotypic stands that range in size from approximately 0.1 to 2 acres. <br />Eight species of perennial forbs occurred in the cover and frequency sample (Table 2.04.10 -9). <br />The dominant perennial forb was white prairie aster ( Aster adscendens This species <br />comprised nearly one -half of the perennial forb cover and occurred in 50 percent of the cover <br />plots. Only three species of annual forbs and one shrub species were represented in the <br />samples. <br />The mean herbaceous production in the graminoid component of the swale /drainage type is <br />presented in Table 2.04.10 -10. Individual plot data used to derive the summary may be found <br />in Attachment 2.04.10 -6, formerly Peabody 10 -2 (Table 2 -12). Table 2.04.10 -10 expresses <br />production on a dry weight basis by morphological class as grams per 0.25m (plot size), <br />pounds per acre and percent composition by weight. The results indicate that perennial <br />graminoids dominated the type component in terms of biomass (97.8 percent of the total <br />above - ground plant biomass). Perennial and annual forbs contributed only minor amounts to <br />(Revised October 2009) 2.04.10-49 <br />