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Tceweitaf npprnaeh <br />~~. <br />the transact, all woody plants will be counted by <br />species. <br />A sample size of 5 to 10 transccts is anticipated for <br />each reference plot. Howcvur, the newel number of <br />transccts conducted will be determined by sample <br />adequacy calculations (described below), If the <br />number of wryotly plant transccts ncedcd exccCJs <br />the number of cover transccts, the additional <br />transccts will be locyted using the methods identi- <br />ficd for cover transccts. <br />Sample Adequacy <br />C't1LRD rcguiatians require sampling in a manner <br />that resuHs in a stab>tiully valiJ estimate of the <br />often is obtained for parameters of interest, such <br />as vc~ct,9tivc to+er, hcrbaccous production, and <br />+voody plant Jcnsity. The Sncdccor-Cochran sam• <br />plc sire adequacy lormula is recommended by the <br />CYILRD as the basis fur adequacy calculations. <br />Conscyucntly, Grclstonc proposes to use this <br />ii~rmula (Equation 2) for all sample size dctcrmi- <br />nations. <br />3 3 <br />Nmm r r s (2) <br />(dx)= <br />Whcrc: <br />required number of trsnsccts or <br />quadrats, <br />= 1.G4 (the t~a~ value for a doubte• <br />tailed t•test with infinite degrees <br />of freedom :tt the 909o confidence <br />Ics•c!), <br />s~ = sample variance, <br />d 0.1 (the Icwcl of precision for <br />estimate of the mean to be within <br />10,^0 of the acKUai mean), and <br />= sample mean. <br />The actual number o(ttansects conducted i» each <br />area will be determined using a two•staged sam- <br />pling procedure. First, means and associated <br />variance values will be calculated using data from <br />the first foe transetts or ]0 production quadrats. <br />This information will then be used in equation 210 <br />determine the actual number of transetts ncedcd. <br />If the calculations indicate the required number of <br />transccts nr quadrats is equal w or Icss than five <br />or ten, respectively, sampling will be tonsidcred <br />adequate. if the rcyuircd number of transccts is <br />greater than five or ten. the additional transccts or <br />quadrats wilt be run. <br />Identification of Revegetation .-- ~. <br />Success Criferia <br />~`~y.. Li <br />f Z.µ 1 <br />M <br />Rcvicectation success criteria nccJ to be estab- <br />lished tar vcgctativc cover, hcrhaccous production. <br />woody plant density, and spccics divcrsily. Yhc <br />resuhs field sun•cys wilt be used t deterthnf, nc ~hc <br />Criteria. The success criteria tnr +'e etative cow, <br />hcrbaccous~rodutiion, and woody plan cnsity <br />well be thCytl~IRp19_mc-tnc r:Qc~~l•tt d Iir tlv from <br />the sam tl le data, Calculation of the spccics divcrsi- <br />ty success criterion is based nn the cover nr pro- <br />duCtion data. <br />Grevstnne will follow CMLRD's recommendation <br />of u simple comparison of spccics composition, <br />life-farm, and seasonality to demonstrate success in <br />establishing a diverse vcgctativc cover. Basiraliy, <br />the nurnber of perennial herbnccous spccics con- <br />tributing greater than 3 percent relative cover or <br />production in the rcfcrcncc plots will Jcsignatc ihC <br />number of spccics, the seasonality, and the life <br />forms o[ the spccics to be established on the test <br />plots. For example, three cool season grasses and <br />one perennial forb arc found Io each contribute <br />between 3 percent and 35 percent relative cover on <br />the northern reference plot. In this case, GrclStone <br />would reCUmmend a SpCCICS dlVersily tfllCriOn 0! <br />three cool season grasses and one percnnialforb <br />exhibiting a relative cover between 3 percent and <br />35 percent. <br />Task 2 - Pirst Test Plvt <br />Assessment <br />The first tcstplot_asscssmeni will occur Burin the <br />1rl9~rowing season. The test plot siscssmcnt will <br />consist of sampling v~etativc cover sod woody <br />plant density. No herbnccous pry titan sampling <br />will be tonductcd during this sun'cy. Vcgctati+'c <br />~I <br />:, <br />~-•- <br />