Measuring the number of co-dominants in ecological communities

被引：28

作者：

Kikvidze, Z

Ohsawa, M

机构：

[1] Chiba Univ, Fac Sci, Ecol Lab, Inage Ku, Chiba 2638522, Japan

[2] Univ Tokyo, Inst Environm Studies, Lab Biosphere Funct, Tokyo 1130033, Japan

来源：

ECOLOGICAL RESEARCH | 2002年 / 17卷 / 04期

关键词：

abundance distribution; community structure; diversity; dominance; Simpson's index;

D O I：

10.1046/j.1440-1703.2002.00508.x

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

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.

引用

页码：519 / 525

页数：7