Biodiversity Index

Source: R/index.bio.R

Scientists use a formula called the biodiversity index to describe the amount of species diversity in a given area.

index.bio(
  data,
  method = c("Margalef", "Simpson.Dom", "Simpson.Div", "Berger.Parker", "McIntosh",
    "Shannon"),
  level = 95,
  nboot = 100,
  console = TRUE
)

Arguments

data

number of specimens
method

Describe method bio-diversity
level

Significant level
nboot

size bootstrap
console

output console TRUE

Value

Index and confidence intervals.

Details

method bio-diversity. "Margalef" "Simpson.Dom" "Simpson.Div" "Berger.Parker" "McIntosh" "Shannon"

References

Magurran, A.E. (1988) Ecological diversity and its measurement. Princeton University Press Efron, B., Tibshirani, R. (1993) An Introduction to the Boostrap. Chapman and Hall/CRC

Examples


library(agricolae)
data(paracsho)
# date 22-06-05 and treatment CON = application with insecticide
specimens <- paracsho[1:10,6]
output1 <- index.bio(specimens,method="Simpson.Div",level=95,nboot=100)
#> 
#> Method: Simpson.Div 
#> 
#> The index: 0.82 
#> 
#> 95 percent confidence interval:
#>  0.8 ; 0.8906336 
#> 
output2 <- index.bio(specimens,method="Shannon",level=95,nboot=100)
#> 
#> Method: Shannon 
#> 
#> The index: 2.865957 
#> 
#> 95 percent confidence interval:
#>  2.790793 ; 3.321928 
#> 
rbind(output1, output2)
#>        method    index confidence      lic       lsc nboot
#> 1 Simpson.Div 0.820000         95 0.800000 0.8906336   100
#> 2     Shannon 2.865957         95 2.790793 3.3219281   100