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Abstract：
Recent developments in phylogenetic methods and data acquisition have allowed for the construction of large and comprehensive phylogenetic relationships. Published phylogenies represent an enormous resource that not only facilitates the resolution of questions related to comparative biology, but also provides a resource on which to gauge the development of concordance across the tree of life. From the Open Tree of Life, we gathered 290 avian phylogenies representing all major groups that have been published over the last few decades and analyzed how concordance and conflict develop among these trees through time. Nine large scale phylogenetic hypotheses (including a new synthetic tree from this study) were used for comparisons. We found that conflicts were over-represented both along the backbone (higher-level neoavian relationships) and within the oscine Passeriformes. Importantly, although we have made major strides in the resolution of major clades, recent published comprehensive trees, as well as trees of individual clades, continue to contribute significantly to the resolution of relationships throughout the avian phylogeny. Our analyses highlight the need for continued research into the resolution of avian relationships.
摘要：
系统发育方法和数据获取的最新发展使构建大型而全面的系统发育关系成为可能。已发表的系统发育代表了一个巨大的资源，不仅有助于解决与比较生物学有关的问题，但也提供了一种资源来衡量整个生命树的一致性发展。从开放的生命之树，我们收集了290个代表过去几十年来发表的所有主要群体的鸟类系统发育，并分析了这些树木之间的一致性和冲突是如何随着时间发展的。使用9个大规模的系统发育假设（包括本研究的新合成树）进行比较。我们发现，沿着骨干（更高级别的新鸟类关系）和oscinePasseriformes内的冲突都被过度代表。重要的是,尽管我们在解决主要分支方面取得了重大进展，最近出版的综合树木，以及个别分支的树木，在整个鸟类系统发育过程中，继续为解决关系做出重大贡献。我们的分析强调需要继续研究解决鸟类关系。
