Evolutionary isolation scores used in this study.

Let T be a rooted ultrametric phylogenetic tree with a root R and X as a set of species [leaves]. Further, let N be the size of X, and n be the total number of nodes in T.Evolutionary isolation scores used in this study.设T为一棵以R为根节点的有根超度量系统发育树（rooted ultrametric phylogenetic tree），其中X为对应该树叶节点的物种集合。进一步，令N为集合X的元素总数，n为树T的总节点数。本研究所使用的进化隔离得分（Evolutionary isolation scores）。