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-~,_ ,, <br />• Production - Sagebrush/Snowberry vegetation type. Here, very heavy growth of <br />western bracken fern in four of the sample plots caused a lack of comparability to be <br />statistically indicated. Removal of these plots from the calculation resulted in <br />indication of comparability. The area in which Sagebrush/Snowberry stands are <br />infested with bracken is along the toeslope in upper Hubberson Gulch (southeast corner <br />of the permit areal. <br />• Cover - Western Wheatgress/Alkali Sagebrush vegetation type. Here, lack of <br />comparability between the affected and reference areas resulted from the prevalence of <br />heavy grass caused by the late summer rains in the extended reference area. Normally, <br />herbaceous vegetation growth in this vegetation type is curtailed by midsummer, as the <br />clay soils fail to become deeply wetted by thundershowers. In 1997, above average <br />moisture allowed continued herbaceous growth on much of the area, and it is <br />speculated that some areas had become more deeply wetted and supportive of <br />continued plant growth than others. The 11-W South Extension area includes more the <br />ridgetop occurrence of this type, while the reference area includes more long, gentle <br />west-facing slopes, where there may be subtle tendencies in the substrate to receive <br />moisture more effectively. <br /> <br /> <br />63 Revised 9/98 <br />... -.~-.~.w..el~d~::.:~~....e~..u:.'_ia..::~.'.L:,:=~~~-t:w~-~ ...a..~A.o._-:~"fnNisgwiit'a~tYf-c~...-.'_._...._is:~.:_s~,r.~,_.u.~aiL`>Y''-:c ~'!.3k.°='~:.;"- ,aG~dYP--o:~ <br />