Simpson Index Calculator
Calculate Simpson's diversity index and related measures of community diversity and dominance.
Input Parameters
Simpson's D: Σ[n(n-1)/N(N-1)]
Diversity (1-D): Probability different species
Reciprocal (1/D): Effective species count
Note: Simpson's D ranges from 0 to 1, where higher values indicate lower diversity (more dominance).
Simpson's Diversity (1-D)
0.8051
Higher = more diverse
Simpson's D
0.1949
Reciprocal (1/D)
5.13
Gini-Simpson
0.7996
Evenness
0.5131
Community Analysis
Species Count10
Total Individuals146
Berger-Parker Index0.3425
Dominant Species50 individuals