Desdevises Yves, Legendre Pierre, Azouzi Lamia, Morand Serge
Laboratoire Arago, Université Pierre et Marie Curie, UMR CNRS 7628, BP 44, 66651 Banyuls-sur-Mer Cedex, France.
Evolution. 2003 Nov;57(11):2647-52. doi: 10.1111/j.0014-3820.2003.tb01508.x.
Comparative analysis methods control for the variation linked to phylogeny before attempting to correlate the remaining variation of a trait to present-day conditions (i.e., ecology and/or environment). A portion of the phylogenetic variation of the trait may be related to ecology, however; this portion is called "phylogenetic niche conservatism." We propose a method of variation partitioning that allows users to quantify this portion of the variation, called the "phylogenetically structured environmental variation." The new method is applied to published data to study, in a phylogenetic framework, the link between body mass and population density in 79 species of mammals. The results suggest that an important part of the variation of mammal body mass is related to the common influence of phylogeny and population density.
比较分析方法在试图将一个性状的剩余变异与当前条件（即生态和/或环境）相关联之前，会控制与系统发育相关的变异。然而，该性状的一部分系统发育变异可能与生态有关；这部分变异被称为“系统发育生态位保守性”。我们提出了一种变异划分方法，该方法允许用户量化这部分变异，即“系统发育结构环境变异”。我们将这种新方法应用于已发表的数据，以便在系统发育框架下研究79种哺乳动物的体重与种群密度之间的联系。结果表明，哺乳动物体重变异的一个重要部分与系统发育和种群密度的共同影响有关。
