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
10-spot ladybird
Adalia decempunctata
1898)
Allochrocebus preussi
2-spot ladybird
Adalia bipunctata
6 Spotted Longhorn
Anoplodera sexguttata
Abbott's Duiker
Cephalophus spadix
Abert's Squirrel
Sciurus aberti
Abyssinian genet
Genetta abyssinica
Abyssinian Hare
Lepus habessinicus
Acacia
Acacia lysiphloia
Acanthus
Acanthus ebracteatus
Acara Acraea
Acraea acara
Aceramarca Gracile Opossum
Gracilinanus aceramarcae
Achallo
Chinchillula sahamae
Aconite
Aconitum napellus
Adantic White-Sided Dolphin
Lagenorhynchus acutus
Addax
Addax nasomaculatus
Aders' duiker
Cephalophus adersi
Adjarian Angelica
Angelica adzharica
Admirable False Brook Salamander
Aquiloeurycea praecellens
Admiralty Flying Fox
Pteropus admiralitatum