GENERAL44042

• Permit No: C1981021
• IBM Index Class Name: General Documents
• Doc Name: BOURG VEGETATION DATA 1997 COVER DATA
• Permit Index Doc Type: vegetation
• Media Type: D
• Archive: No

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Bourg Vegetation Data
1997COVER DATA
1984 Area Vegetation Cover
Transect % Veg. Cover %Litter % Bare
1988 Area Vegetation Cover
Transect % Veg. Co' %Litter % Bare
1 46 34 20 1 30 62 8
2 33 35 32 2 25 48 27
3 18 33 49 3 29 40 31
4 35 44 21 4 36 44 20
5 33 31 36 5 31 59 10
6 31 42 27 6 33 44 23
7 28 51 20 7 35 51 14
8 43 35 22 8 34 44 22
9 29 30 41 9 32 41 27
10 38 42 20 10 32 51 17
11 31 38 31 11 31 53 16
12 25 49 26 12 29 53 17
13 37 43 19 13 30 50 20
14 34 44 22 14 30 48 21
15 28 41 31 15 24 41 35
16 35 40 25
17 33 49 18
18 35 42 23
19 19 52 29
20 29 42 29
Mean x 32.6 Mean x 30.6
Std. Dev. 6.9 Std. Dev. 4.2
Variance s2 48.3 Variance s2 17.5
n=15 n=20
Sample Adequacy t2 s2 8.21 Sample Adequacy 3.30
(d X)X)
1.345 t=1.328
Sample Adeouacv for alpha and beta (Kuooer & Hafnerl
N= (t alpha+ t betal2 (s2) 1.345+.692)^2)'48.3)/((.1'35.145)^2)
(dO)2 16.23 1.328+.688)^2)' 17.5)/((.1'35.145)^2)
5.76
Pooled Vegetation Cover for Reclaimed Areas
Mean - 29/112 x 32.6 + 83/112 x 30.6 31.12
degrees of freedom = (15-1)+(20-1)= 33
Standard Error of Weighted Sample Mean (Sx)
Square root of
Square root=
calculated t= Q-pooled mean
Sx
((29/112)^2'(48.3/15))+((83/112)^2' (17.5/20))
0.696822
0.834759
35.15-31.1. = 4.86
0.83
df=33
t alpha .1 = 1.308