Arias J Salvador, Szumik Claudia A, Goloboff Pablo A
CONICET, INSUE, Facultad de Ciencias Naturales e Instituto Miguel Lillo, Universidad Nacional de Tucumán, Miguel Lillo 205, S.M. de Tucumán (4000), Tucumán, Argentina.
Cladistics. 2011 Dec;27(6):617-628. doi: 10.1111/j.1096-0031.2011.00353.x. Epub 2011 Apr 26.
Based on Hovenkamp's ideas on historical biogeography, we present a method for analysis of taxon history, spatial analysis of vicariance, which uses observed distributions as data, thus requiring neither predefined areas nor assumptions of hierarchical relations between areas. The method is based on identifying sister nodes with disjunct (allopatric/vicariant) distributions. To do this across the tree, internal nodes are assigned distributions (as the sum of the distributions of the descendant nodes). When distributions are less than ideal, ignoring the distribution of the problematic node(s) when assigning a distribution to their ancestors may allow us to consider additional sister nodes (i.e. those resulting from splits basal to the problematic node) as having disjunct distributions. The optimality criterion seeks to find the best (possibly weighted) compromise between the maximum possible number of disjunct sister nodes and the minimum number of eliminated distributions. The method can also take overlap into account. The methodology presented is implemented in VIP, a computer program available at http://www.zmuc.dk/public/phylogeny/vip. © The Willi Hennig Society 2011.
基于霍温坎普关于历史生物地理学的观点，我们提出了一种用于分析分类单元历史的方法——间断分布的空间分析方法，该方法将观察到的分布作为数据，因此既不需要预先定义区域，也不需要假设区域之间的层次关系。该方法基于识别具有间断（异域/间断分布）分布的姊妹节点。为了在整个树中做到这一点，内部节点被赋予分布（作为后代节点分布的总和）。当分布不理想时，在为其祖先分配分布时忽略有问题节点的分布，可能会使我们将额外的姊妹节点（即那些在有问题节点基部的分裂产生的节点）视为具有间断分布。最优标准旨在找到在最大可能数量的间断姊妹节点和最小数量的排除分布之间的最佳（可能加权的）折衷方案。该方法也可以考虑重叠情况。所提出的方法在VIP中实现，VIP是一个可从http://www.zmuc.dk/public/phylogeny/vip获取的计算机程序。© 威利·亨尼希协会2011年。
