Laserfiche WebLink
. acceptable when the herbaceous production in the rangeland reclaimed areas is not less than <br />90 percent of the herbaceous production of the appropriate reference areas with 90 percent <br />statistical confidence. <br />Species -ive rsity. Species diversity will not be evaluated in the dryland pasture type or <br />the improved pasture (subirri gated/irrigated) type since these communities do not reflect <br />any native plant community, the composition of the mixes are oriented towards utility, and <br />the intended uses for these two types are more agricultural in nature. <br />In rangeland reclaimed areas species diversity will be evaluated as follows, In upland <br />rangeland reclaimed areas five established grasses will each have 50 percent or greater <br />frequency, with three of these grasses contributing greater than 1 percent relative cover <br />each. A minimum of two forbs will be established and each will also have 50 percent or <br />greater frequency of occurrence. At least one shrub will be established with a frequency of <br />1D percent or greater. In lowland rangeland areas, diversity will reflect graminoitl <br />dominated native communities. For this type six established grasses will each have 50 <br />percent or greater frequency with four of the grasses contributing greater than one percent <br />. relative cover each. A minimum of one forb with gxe ater than 50 percent frequency will be <br />present in the lowland rangeland type. <br />Woody Plant Density. Woody Plant density is not proposed for any of the reclaimed plant <br />communities for the following reasons. The dryland pasture and improved pasture types are <br />to be managed for livestock grazing. Forage production of species with a high level of <br />utility for livestock is the primary goal in these areas. In the rangeland reclaimed areas <br />the width of disturbance is generally 200 feet or less, representing a minimal disturbance <br />in relation to the surrounding area. The herbaceous dominated reclaimed areas will <br />diversify habitat in the existing extensive, native woody vegetation and create more edge. <br />The species to be established in the rangeland areas axe palatable and provide utility to a <br />variety of wildlife species and livestock. Additionally, the contributing area of adjacent <br />undisturbed vegetation in relation to the area of reclamation is great. The number of <br />potential propogules from this large native source will reestablish woody vegetation in <br />time. <br />Seasonal variety. Seasonal variety in native communities is heavil y~ biased towards cool <br />season species and Seed Mix No. 3 reflects this. Irt addition, the dryland pasture and <br />improved pasture types are to be managed for livestock grazing, an agriculture based land <br />use. For these reasons, seasonal variety evaluations will not be made. Please note that <br />13 <br />