Hill Number N0
Return the Hill number of order zero, which equals species richness and therefore passes the species count through unchanged.
Description
Return the Hill number of order zero, which equals species richness and therefore passes the species count through unchanged.
Hill Number N0 is a focused biology tool that return the Hill number of order zero, which equals species richness and therefore passes the species count through unchanged. It calculates locally from the values you enter and exposes the result without changing the source observations.1
When to use Hill Number N0
Use Hill Number N0 when you need to return the Hill number of order zero, which equals species richness and therefore passes the species count through unchanged. Enter Species count using the definitions and units below so the result can be reproduced.
- Species count
- An integer count or setting greater than or equal to 0.
How Hill Number N0 calculates the result
The published tool contract uses this rule: Return the Hill number of order zero, which equals species richness and therefore passes the species count through unchanged.1
- Hill number N0
- The calculated hill number n0.
Limitations of Hill Number N0
The calculation does not propagate measurement uncertainty, sampling error, or biological and chemical variability.
Alternative or Complementary measurements
Retain the original Species count values and their units alongside the result. Hill Number N1 is useful when you instead need to convert a natural-log Shannon entropy to the Hill number of order one, the effective number of equally common species, as exp(H). Hill Number N2 provides another view by helping you convert a Simpson concentration to the Hill number of order two as its reciprocal.
References
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Diversity index — Wikipedia contributors
Similar or alternative tools
- Hill Number N1
Convert a natural-log Shannon entropy to the Hill number of order one, the effective number of equally common species, as exp(H).
- Hill Number N2
Convert a Simpson concentration to the Hill number of order two as its reciprocal.
- Harrison Beta
Compute Harrison's normalized beta-2 turnover for two sites as (S₁ + S₂ - 2C) / (S₁ + S₂), where C is shared richness. The result is zero for identical species sets and one for disjoint sets.