Enter the number of individuals in the most abundant species and the number of individuals in the sample into the Calculator. The calculator will evaluate the Berger-Parker Index. 

Berger-Parker Index Formula

BPI = Nm / n

Variables:

  • BPI is the Berger-Parker Index ()
  • Nm is the number of individuals in the most abundant species
  • n is the number of individuals in the sample

To calculate Berger-Parker Index, divide the number of individuals in the most abundant species by the number of individuals in the sample./

How to Calculate Berger-Parker Index?

The following steps outline how to calculate the Berger-Parker Index.

  1. First, determine the number of individuals in the most abundant species. 
  2. Next, determine the number of individuals in the sample. 
  3. Next, gather the formula from above = BPI = Nm / n.
  4. Finally, calculate the Berger-Parker Index.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

number of individuals in the most abundant species = 37

number of individuals in the sample = 30