Biodiversity Indices
Scientists use a formula called the biodiversity index to
describe the amount of species diversity in a given area.
Method bio-diversity :"Margalef" "Simpson.Dom" "Simpson.Div" "Berger.Parker"
"McIntosh" "Shannon"
Parameters: Method, size bootstrap for confidence limites
and level
>
library(agricolae)
> data(paracsho)
> # date 22-06-05 and treatment CON = application with insecticide
> specimens <- paracsho[1:10,6]
> index.bio(specimens,method="Simpson.Div",level=95,Boot=200)
Method:
Simpson.Div
The index: 0.82
95 percent confidence interval:
0.8 ; 0.892562
> index.bio(specimens,method="Shannon",level=95,Boot=200)
Method: Shannon
The index: 3.973060
95 percent confidence interval:
3.893749 ; 4.60517
> index.bio(specimens,method="Margalef",level=95,Boot=200)
Method: Margalef
The index: 3.004274
95 percent confidence interval:
2.552206 ; 3.753292
> index.bio(specimens,method="Simpson.Dom",level=95,Boot=200)
Method: Simpson.Dom
The index: 0.18
95 percent confidence interval:
0.1 ; 0.2
> index.bio(specimens,method="Berger.Parker",level=95,Boot=200)
Method: Berger.Parker
The index: 0.3
95 percent confidence interval:
0.1666667 ; 0.4
> index.bio(specimens,method="McIntosh",level=95,Boot=200)
Method: McIntosh
The index: 0.741552
95 percent confidence interval:
0.7225772 ; 1