Biodiversity Calculator
Calculate biodiversity indices including Shannon-Wiener diversity, Simpson's index, and species richness. Enter species abundance data and get instant ecological diversity metrics.
AnalysisBiodiversity Index Calculator
Enter species names and abundance counts to calculate diversity indices.
Species Richness (S)
Number of species present
Shannon-Wiener (H')
Accounts for richness and evenness
Simpson's (1-D)
Probability of interspecific encounter
Evenness (J')
How evenly individuals are distributed
Total individuals: · Dominance:
About these indices
Shannon-Wiener (H'): H' = -Σ pi ln(pi). Higher values indicate more diversity. Typically ranges 1.5-3.5.
Simpson's (1-D): 1 - Σ ni(ni-1) / N(N-1). Ranges 0-1. Higher values mean higher diversity.
Evenness (J'): J' = H' / ln(S). Ranges 0-1. Values near 1 indicate even distribution.
Featured Species
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Hypsugo alaschanicus
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Spermophilus alashanicus
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Chodsigoa sodalis
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Murina fusca
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Niviventer andersoni
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Rhinolophus osgoodi
baiji
Lipotes vexillifer
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Aquilaria sinensis
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Abies beshanzuensis
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Myotis pequinius
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Felis bieti
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Sciurotamias forresti
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Euchoreutes naso
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Chodsigoa hypsibia
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Apodemus latronum
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Ochotona dauurica
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Ailuropoda melanoleuca
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