Sorensen index calculator

The Sorensen index calculator can be used to measure the similarity between two communities based on their species composition.

Input Parameters

Calculation Results

Calculation Formula

Sorensen Index (S) = 2 * (Number of Shared Species) / (Total Number of Species in Community 1 + Total Number of Species in Community 2)

Where:
- Number of Shared Species: Species found in both communities
- Total Number of Species in Community 1: Total species in the first community
- Total Number of Species in Community 2: Total species in the second community

Result

Sorensen Index: 0

Sorensen index calculator Calculator Usage Guide

Learn how to use the Sorensen index calculator and its working principles

How to Use the Sorensen Index Calculator

  1. Enter the total number of species in Community 1.
  2. Enter the total number of species in Community 2.
  3. Enter the number of species shared by both communities.
  4. Click the "Calculate" button to compute the Sorensen index.
  5. The result will be displayed as a value between 0 and 1, where 1 indicates perfect similarity and 0 indicates no similarity.

Understanding the Sorensen Index

The Sorensen index is a measure of ecological similarity that ranges from 0 to 1. A value of 1 indicates that both communities have identical species composition, while a value of 0 indicates that there are no species shared between the communities. This index is widely used in ecological studies to compare the similarity of species composition between different communities.