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comparison of the parameter values with the standard to be achieved, either from the <br />reference azea in the case of vegetation cover and herbaceous production, or the <br />• established standard for species composition. <br />Total Vegetation Cover (2001) <br /> Reference Area 1995 Rec. Areas 1997 Rec. Areas 1995 Areas <br />bar 48.80 48.60 38.60 51.00 <br />S 4.73 6.60 8.69 12.12 <br />n 10 10 10 10 <br />Nmin 3 6 17 19 <br />Total Herbaceous Production (2001) <br /> Reference Area 1995 Rec Areas 1997 Rec. Areas 1998 Areas <br />bar 119.71 199.55 242.71 186.33 <br />S 40.29 83.64 85.30 99.82 <br />n 15 15 15 15 <br />Nmin 35 54 38 89 <br />• Species Composition (2001) <br /> Success Osgood 1995 1997 1998 <br /> Standard Sand Ref. Rec. Areas Rec. Areas Areas <br />Total Perennial Species 7 5 10 6 3 <br />(>3% rel. cover) <br />Warm Season Grasses 4 5 4 1 1 <br />Perennial Forbs 1 0 1 1 1 <br />Relative Importance All qualify- 4 of 5 10 of 10 6 of 6 3 of 3 <br />(3%<a<40%) ing species <br />Based on the results of the 2001 quantitative sampling, the 1995 reclamation azeas and the <br />1998 reseeded or interseeded azeas met the revegetation success criterion for vegetation <br />cover. Both these areas mean vegetation cover value was greater than the mean <br />vegetation cover value from the Osgood sand reference azea. The mean from the 1997 <br />reclamation azeas was not statistically equivalent to 90 percent of the mean of the Osgood <br />sand reference area with 90 percent confidence, based on a Student's t statistical test. <br />I• <br />With regard to total herbaceous production, all reclamation areas exceeded the total <br />herbaceous production value from the Osgood sand reference area, therefore meeting the <br />revegetation success criterion for herbaceous production. <br />-15- <br />