Evolutionary legacies in contemporary tetrapod imperilment,Ecology Letters

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Evolutionary legacies in contemporary tetrapod imperilment
Ecology Letters ( IF 7.6 ) Pub Date : 2021-09-12 , DOI: 10.1111/ele.13868
Dan A Greenberg ₁ , R Alexander Pyron ₂ , Liam G W Johnson ₁ , Nathan S Upham _{3,

4,

5} , Walter Jetz _{3,

4} , Arne Ø Mooers ₁

Affiliation

The Tree of Life will be irrevocably reshaped as anthropogenic extinctions continue to unfold. Theory suggests that lineage evolutionary dynamics, such as age since origination, historical extinction filters and speciation rates, have influenced ancient extinction patterns – but whether these factors also contribute to modern extinction risk is largely unknown. We examine evolutionary legacies in contemporary extinction risk for over 4000 genera, representing ~30,000 species, from the major tetrapod groups: amphibians, birds, turtles and crocodiles, squamate reptiles and mammals. We find consistent support for the hypothesis that extinction risk is elevated in lineages with higher recent speciation rates. We subsequently test, and find modest support for, a primary mechanism driving this pattern: that rapidly diversifying clades predominantly comprise range-restricted, and extinction-prone, species. These evolutionary patterns in current imperilment may have important consequences for how we manage the erosion of biological diversity across the Tree of Life.

中文翻译：

当代四足动物危机中的进化遗产

随着人为灭绝的继续展开，生命之树将被不可逆转地重塑。理论表明，谱系进化动态，例如起源以来的年龄、历史灭绝过滤器和物种形成率，影响了古代灭绝模式，但这些因素是否也会导致现代灭绝风险在很大程度上尚不清楚。我们研究了 4000 多个属、约 30,000 个物种的当代灭绝风险的进化遗产，这些属主要四足动物类群：两栖动物、鸟类、海龟和鳄鱼、有鳞爬行动物和哺乳动物。我们发现一致支持以下假设：近期物种形成率较高的谱系的灭绝风险较高。随后，我们测试了驱动这种模式的主要机制，并找到了适度的支持：快速多样化的进化枝主要由范围受限且易于灭绝的物种组成。当前危险中的这些进化模式可能会对我们如何应对生命之树生物多样性的侵蚀产生重要影响。

更新日期：2021-10-08

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