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
abigarrada de la ortiga
Aglais urticae
Acantiza Culirroja
Acanthiza uropygialis
Acantiza Parda
Acanthiza pusilla
Acantiza Reguloide
Acanthiza reguloides
Achichilique pico naranja
Aechmophorus clarkii
acíbar
Aloe arborescens
acibara
Agave americana
acónito común
Aconitum napellus
Actinodura Coroninegra
Actinodura sodangorum
Africano
Carcharodon carcharias
agróstide blanca
Agrostis gigantea
agróstide común
Agrostis capillaris
Aguara Guazu
Chrysocyon brachyurus
Águila cabeza blanca
Haliaeetus leucocephalus
Águila estriada
Aquila spilogaster
Águila real
Aquila chrysaetos
Alamillo
Alnus oblongifolia
Alción de Mindanao
Actenoides hombroni
Alistonia
Alstonia scholaris
almendro
Andira inermis