Physical and environmental drivers of Paleozoic tetrapod dispersal across Pangaea
Physical and environmental drivers of Paleozoic tetrapod dispersal across Pangaea
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DOI：
10.1038/s41467-018-07623-x
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发表时间：
2018-12-06
影响因子：
16.6
通讯作者：
Froebisch, Joerg
中科院分区：
文献类型：
--
作者：
Brocklehurst, Neil;Dunne, Emma M.;Froebisch, Joerg
石炭纪和二叠纪是陆地生态系统建立的关键时期，伴随着全球环境和气候的巨大变化，以及盘古大陆的最终组装。这些变化对四足动物生物地理学的影响颇具争议，一些作者认为由于缺乏障碍而形成了世界性动物群，而另一些作者则认为是地方主义。在这里，我们对晚古生代四足动物进行了详细的历史生物地理学分析，以研究其扩散和替代模式。基于可能性的推断祖先区域的方法与随机映射相结合，以评估替代率和分散率。晚石炭世和瓜达卢普世末期的特点是羊膜动物和两栖动物的扩散减少和替代高峰。第一个变化归因于造山活动，第二个变化归因于气候异质性的增加。
The Carboniferous and Permian were crucial intervals in the establishment of terrestrial ecosystems, which occurred alongside substantial environmental and climate changes throughout the globe, as well as the final assembly of the supercontinent of Pangaea. The influence of these changes on tetrapod biogeography is highly contentious, with some authors suggesting a cosmopolitan fauna resulting from a lack of barriers, and some identifying provincialism. Here we carry out a detailed historical biogeographic analysis of late Paleozoic tetrapods to study the patterns of dispersal and vicariance. A likelihood-based approach to infer ancestral areas is combined with stochastic mapping to assess rates of vicariance and dispersal. Both the late Carboniferous and the end-Guadalupian are characterised by a decrease in dispersal and a vicariance peak in amniotes and amphibians. The first of these shifts is attributed to orogenic activity, the second to increasing climate heterogeneity.