Detailed Calculations for Shannon Wiener Index
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Detailed
Calculations for Simpson's Index
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Avg. plants/m2 |
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UPLAND SITE |
n |
n-1 |
n(n-1) |
n(n-1)/ N(N-1) |
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Greasy Grass |
3 |
2 |
6 |
0.083 |
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Fuzzy Forb |
3 |
2 |
6 |
0.083 |
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Spiney Shrub |
3 |
2 |
6 |
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SUM = N = |
9 |
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0.167 |
= ∑ or sum = λ |
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N(N-1)
= 9 x 8 = 72 |
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= Simpsons Index |
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Avg. plants/m2 |
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LOWLAND SITE |
n |
n-1 |
n(n-1) |
n(n-1)/ N(N-1) |
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Greasy Grass |
7 |
6 |
42 |
0.583 |
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Fuzzy Forb |
2 |
1 |
2 |
0.028 |
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Spiney Shrub |
0 |
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SUM = N = |
9 |
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|
0.611 |
= ∑ or sum = λ |
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N(N-1)
= 9 x 8 = 72 |
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|
= Simpsons Index |
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|