Measuring the number of co-dominants in ecological communities
Article first published online: 28 JUN 2002
Volume 17, Issue 4, pages 519–525, July 2002
How to Cite
Kikvidze, Z. and Ohsawa, M. (2002), Measuring the number of co-dominants in ecological communities. Ecological Research, 17: 519–525. doi: 10.1046/j.1440-1703.2002.00508.x
- Issue published online: 28 JUN 2002
- Article first published online: 28 JUN 2002
- Received 11 June 2001. Accepted 5 December 2001.
- abundance distribution;
- community structure;
- Simpson’s index
We suggest a concept that allows the objective determination of the number of co-dominants in a community. We define co-dominants as a subset of species that are more abundant and more uniformly distributed than other species in a given sample. We compare the sample with a model community and use Simpson’s diversity index to estimate the apparent number of co-dominants. Dominant species determined in this way are responsible for 70–90% of the total measure of abundance in the sample. The statistical significance of the apparent number of co-dominants may be assessed by a randomization test.