Laserfiche WebLink
RESULTS AND DISCUSSION • <br />Results of the revegetation success study are presented and discussed <br />in this .section. The major components of the study included arkilysis <br />of species composition, especially in regard to the presence of noxious <br />weeds and selenium indicators and estimation of vegetation species <br />Dover, frequency, production and shrub heights (for the few shrubs <br />growing on the revegetation plot). General aanpazisons aze made with <br />species composition, cover, frequency, production and shrub height data <br />obtained on adjacent native undisturbed mixed brush type/aspen subtype <br />and upland sagebrush vegetation types. These data are discussed in detail <br />in the Seneca II vegetation baseline report submitted separately. EvaLua- <br />tion of seed mixture success based on the species oca~osition of the seed <br />mixture used at Seneca II revegetation plot is also provided. <br />Weather conditions within a given year, notab:Ly the amount and monthly <br />distribution of precipitation, can have a wnsiderable effect on certain • <br />vegetation pazameters, especially productivity. Therefore, in the interest <br />of qualifying the revegetation success data presented in the report <br />for the 1979 growing season, precipitation da+~ gathered at a nearby <br />weather station are included for the 1979 growing season and for the s.ix <br />months preceeding the 1979 growing season (Table 2). <br />VEGETATIVE MOPPING <br />Delineation of the revegetation plot studied :is depicted on the map in <br />Appendix A. The total area studied was appro:~ia:ately 717.6 acres. Lo=anon <br />of mixed brush type/aspen subtype and upland sagebrush adjacent native <br />areas are provided in Map 1, Appendix A of the Seneca II baseline report. <br />VEGETATION SPECIES COMPO6ITION <br />A listing by life form of all vegetative spec:Les enwuntered en or near • <br />the study azea is presented in Appendix C. A total of 64 species have <br />been encountered; 37 forb, 23 grass and 4 shn>t, species. Three of these <br />species are listed as noxious creeds and one a:; a secondary absorber of <br />-10- <br />