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For example, for biomass production sampling in the the Pre-1986 Feclamation Area: <br />1-(12/20) 1-(3/70.79) <br />V y = 298.35 + 140.97 = 12.64 <br />12 3 X 12 <br />Using this calculated variance and aone-tailed t-value (t,l, D.1o = 1.363), the minimum number of <br />primary elements required for an adequate sample size was two, Thus, the use of a two-stage <br />sampling design allowed the achievement of sample adequacy with a total of six samples. <br />Twelve primary units or 36 biomass production and shrub density samples were taken in each <br />monitoring unit. The terms used to calculate variance and sample adequacy for biomass <br />production, shrub density, and shrub and subshrub density are summarized in the following table: <br /> Pre-1 98fi Reclam ation 199 5 Reclama tion 199 6 Reclamation Reference Area Protluclion Sam les <br /> ~ = y <br /> g o o a a a` <br /> <br /> <br />c 2 0 2~ <br />" __ a ~ 2 2 <br /> 4 S ` a m <br /> T <br />i o " o a <br />Term a ~ n n <br /> R a M O 41 Y <br />` j N N <br />r <br /> 2 N n a y a u ~ rr <br /> `m m ~ <br />a N <br />= <br />°w <br /> <br />(q <br />N L <br />VI 6 r/l rjl <br />5.~ 298.35 526fi.fi9 447.fi7. 700.73 8529.76 20691.9 359.7 357.56 2564.31 66.37 341.51 47.52 <br />Sa¢ 14D.B] 4238.9 670.14 1701.59 S75Z91 34080.06 894.07 566.5 28205.64 103.17 342.94 116.29 <br />~~ 12.64 276.3] 38.07 89.42 366.7 1618.98 34.92 26.99 1578.15 469 27.33 5.95 <br />~"O <br /> 2 11 8 3 3 3 3 5 3 1 2 2 <br />ZQ <br />