Species Richness Calculator
Analyze species richness with multiple estimation methods and rarefaction.
Species Data
Enter abundance count for each species
Margalef Index
D = (S - 1) / ln(N)
S = species count, N = total individuals
Observed Species Richness
10
from 144 total individuals
Richness Indices
Margalef Index1.811
Menhinick Index0.833
Species Density0.100 /unit area
Estimated True Richness
Chao1 Estimator10.5
Jackknife1 Estimator11.0
ACE Estimator10.2
Sampling Completeness95.2%
Rarefaction
Expected species at n=508.5
Singletons1
Doubletons1