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
Al-dolpheen
Delphinus delphis
Al Maha
Oryx leucoryx
Anaq al ardh
Caracal caracal
Delfin Azrak wa Abyad
Stenella coeruleoalba
Delfin Kabir
Tursiops truncatus
Dheeb
Canis lupus
Dukhs
Sousa plumbea
Fahad Sayad (الفهد الصياد)
Acinonyx jubatus
Gharabi
Aetobatus narinari
Harmouche
Gazella cuvieri
Idmi
Gazella arabica
Jarjur
Alopias superciliosus
Kalb
Carcharodon carcharias
Kebsh el Gebel
Ammotragus lervia
kharwa'a
Ricinus communis
Kird
Macaca sylvanus
Reem
Gazella marica
Tha’leb Sakhari
Vulpes cana
Thuwar'amir
Aetomylaeus nichofii
Thuwar'amir
Aetomylaeus maculatus