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
Abbott-Ducker
Cephalophus spadix
Abessinisch Hase
Lepus habessinicus
Ackerrand-Grasbüscheleule
Apamea sordens
Acker-Schmalwand
Arabidopsis thaliana
Addax
Addax nasomaculatus
Aders-Ducker
Cephalophus adersi
Adlerholz
Aquilaria malaccensis
Adlerrochen
Aetobatus narinari
Afghanische Gebirgswühlmaus
Blanfordimys afghanus
Afghanischer Maushamster
Calomyscus mystax
Afrikahabicht
Accipiter tachiro
Afrikanischer Elefant
Loxodonta africana
Afrikanischer Habichtsadler
Aquila spilogaster
Afrikanischer Löwe
Panthera leo
Afrikanischer Quastenstachler
Atherurus africanus
Afrikanischer Savannen Hase
Lepus victoriae
Afrika-Schlangenhalsvogel
Anhinga rufa
Afrika Zibetkatze
Civettictis civetta
Agile Breitfuß-Beutelmaus
Antechinus agilis
Alexandersegler
Apus alexandri