Shannon Wiener H
Compute the Shannon-Wiener diversity index from up to five species proportions.
Description
Compute the Shannon-Wiener diversity index from up to five species proportions.
Shannon Wiener H is a focused biology tool that compute the Shannon-Wiener diversity index from up to five species proportions. It calculates locally from the values you enter and exposes the result without changing the source observations.1
When to use Shannon Wiener H
Use Shannon Wiener H when you need to compute the Shannon-Wiener diversity index from up to five species proportions. Enter Species 1 proportion, Species 2 proportion, Species 3 proportion, Species 4 proportion, and Species 5 proportion using the definitions and units below so the result can be reproduced.
- Species 1 proportion
- A finite measured or assumed value from 0 through 1.
- Species 2 proportion
- A finite measured or assumed value from 0 through 1.
- Species 3 proportion
- A finite measured or assumed value from 0 through 1.
- Species 4 proportion
- A finite measured or assumed value from 0 through 1.
- Species 5 proportion
- A finite measured or assumed value from 0 through 1.
How Shannon Wiener H calculates the result
The published tool contract uses this rule: Compute the Shannon-Wiener diversity index from up to five species proportions.
- Shannon-Wiener index
- The calculated shannon-wiener index.
Limitations of Shannon Wiener H
The calculation does not propagate measurement uncertainty, sampling error, or biological and chemical variability. Species 1 proportion must remain between 0 and 1; Species 2 proportion must remain between 0 and 1.
Alternative or Complementary measurements
Retain the original Species 1 proportion, Species 2 proportion, Species 3 proportion, Species 4 proportion, and Species 5 proportion values and their units alongside the result. Brillouin Index is useful when you instead need to compute the Brillouin diversity index HB = (ln(N!) - sum(ln(ni!))) / N from three species counts using loop-based log factorials for communities up to 10000 individuals. Shannon Evenness provides another view by helping you compute Shannon evenness E = H / ln(S) from the Shannon natural-log diversity index and species count, requiring at least two species.
References
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Diversity index — Wikipedia contributors
Similar or alternative tools
- Brillouin Index
Compute the Brillouin diversity index HB = (ln(N!) - sum(ln(ni!))) / N from three species counts using loop-based log factorials for communities up to 10000 individuals.
- Shannon Evenness
Compute Shannon evenness E = H / ln(S) from the Shannon natural-log diversity index and species count, requiring at least two species.
- Simpson Index D
Compute the Simpson diversity index D for three species counts in a sample.