Biodiversity Index Calculator
Calculate ecological diversity indices including Shannon-Wiener Index, Shannon Evenness, and Simpson's Index from species distribution data.
Input Parameters
Enter details for calculation.
Shannon-Wiener Index (H')
Shannon Evenness (E)
Simpson's Index of Diversity (1 - D)
Expert Tip
A high Shannon index indicates high species richness and evenness. Simpson's index values near 0 represent high diversity, while values near 1 represent monoculture dominance.
Calculation Methodology & Details
Formula
Shannon index evaluates both species richness and relative abundance. Evenness shows how close in numbers each species is. Simpson's index of diversity represents the probability that two randomly selected individuals belong to different species.
Important Disclaimer
The calculations provided are for educational and general planning guidelines only. They do not replace professional laboratory or environmental analysis or certified scientific advice.
How to calculate Biodiversity Indices
Steps to run biodiversity analysis:
Count Species
Enter individual counts for each species found in the sample area.
Verify Total Count
The calculator sums all individuals (N) and counts unique species (S).
Evaluate Indices
Compare the Shannon index and Simpson index to evaluate ecosystem health.