Phylogenetic and functional clustering illustrate the roles of adaptive radiation and dispersal filtering in jointly shaping late-Quaternary mammal assemblages on oceanic islands,Ecology Letters

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Phylogenetic and functional clustering illustrate the roles of adaptive radiation and dispersal filtering in jointly shaping late-Quaternary mammal assemblages on oceanic islands
Ecology Letters ( IF 7.6 ) Pub Date : 2022-03-11 , DOI: 10.1111/ele.13997
Xingfeng Si _{1,

2} , Marc W Cadotte _{3,

4} , T Jonathan Davies ₅ , Alexandre Antonelli _{6,

7,

8,

9} , Ping Ding ₁₀ , Jens-Christian Svenning _{11,

12} , Søren Faurby _{6,

7}

Affiliation

Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, China.
Institute of Eco-Chongming (IEC), Shanghai, China.
Department of Biological Sciences, University of Toronto-Scarborough, Toronto, Ontario, Canada.
Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, Ontario, Canada.
Departments of Botany, and Forest & Conservation Sciences, University of British Columbia, Vancouver, British Columbia, Canada.
Department of Biological & Environmental Sciences, University of Gothenburg, Gothenburg, Sweden.
Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden.
Royal Botanic Gardens, Richmond, Surrey, UK.
Department of Plant Sciences, University of Oxford, Oxford, UK.
MOE Key Laboratory of Biosystems Homeostasis & Protection, College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, China.
Center for Biodiversity Dynamics in a Changing World (BIOCHANGE), Department of Biology, Aarhus University, Aarhus C, Denmark.
Section for Ecoinformatics and Biodiversity, Department of Biology, Aarhus University, Aarhus C, Denmark.

Islands frequently harbour unique assemblages of species, yet their ecological roles and differences are largely ignored in island biogeography studies. Here, we examine eco-evolutionary processes structuring mammal assemblages on oceanic islands worldwide, including all extant and extinct late-Quaternary mammal species. We find island mammal assemblages tend to be phylogenetically clustered (share more recent evolutionary histories), with clustering increasing with island area and isolation. We also observe that mammal assemblages often tend to be functionally clustered (share similar traits), but the strength of clustering is weak and generally independent from island area or isolation. These findings indicate the important roles of in situ speciation and dispersal filtering in shaping island mammal assemblages under pre-anthropogenic conditions, notably through adaptive radiation of a few clades (e.g. bats, with generally high dispersal abilities). Our study demonstrates that considering the functional and phylogenetic axes of diversity can better reveal the eco-evolutionary processes of island community assembly.

中文翻译：

系统发育和功能聚类说明了自适应辐射和扩散过滤在共同塑造海洋岛屿上第四纪晚期哺乳动物组合中的作用

岛屿经常拥有独特的物种组合，但在岛屿生物地理学研究中，它们的生态作用和差异在很大程度上被忽略了。在这里，我们研究了构建全球海洋岛屿上哺乳动物组合的生态进化过程，包括所有现存和灭绝的晚第四纪哺乳动物物种。我们发现岛屿哺乳动物群落倾向于系统发育聚类（分享最近的进化历史），聚类随着岛屿面积和隔离而增加。我们还观察到哺乳动物组合通常倾向于在功能上聚集（具有相似的特征），但聚集的强度很弱，并且通常独立于岛屿区域或隔离。这些发现表明原位物种形成和扩散过滤在前人为条件下塑造岛屿哺乳动物组合中的重要作用，特别是通过一些进化枝的适应性辐射（例如蝙蝠，通常具有很高的分散能力）。我们的研究表明，考虑多样性的功能和系统发育轴可以更好地揭示岛屿群落组装的生态进化过程。

更新日期：2022-03-11

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