AN IMPROVED MEASURE OF ANGULAR-DISPERSION IN PLANT NEIGHBORHOODS

Authors
PUETTMANN KJ RHODE D MAXWELL BD LINDQUIST J
Citation
Kj. Puettmann et al., AN IMPROVED MEASURE OF ANGULAR-DISPERSION IN PLANT NEIGHBORHOODS, The American midland naturalist, 130(2), 1993, pp. 401-404
Citations number
11
Categorie Soggetti
Ecology
Journal title
The American midland naturalist → ACNP
ISSN journal
00030031
Volume
130
Issue
2
Year of publication
1993
Pages
401 - 404
Database
ISI
SICI code
0003-0031(1993)130:2<401:AIMOAI>2.0.ZU;2-#
Abstract
Spatial distribution is an important factor determining the intensity and outcome of plant competition. The commonly used measure of angular distributions of plants around a target plant (1 - r) is shown to be limited to unimodal distributions. We present a new index which is bas ed on the variance of the differences between the azimuth of neighbori ng plants. The new index is an improvement as it characterizes the ang ular dispersion in both unimodal and multimodal distributions.