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Intermediate dispersal hypothesis of species diversity : New insights

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Title: Intermediate dispersal hypothesis of species diversity : New insights
Authors: Yamaguchi, Ryo Browse this author →KAKEN DB
Keywords: biogeography
intermediate dispersal hypothesis
speciation rate
species diversity
Issue Date: May-2022
Publisher: John Wiley & Sons
Journal Title: Ecological research
Volume: 37
Issue: 3
Start Page: 301
End Page: 315
Publisher DOI: 10.1111/1440-1703.12313
Abstract: The origin and patterns of species diversity are fundamental themes in ecology and evolutionary biology. Insular systems play an important role in biogeography, and the species richness within an insular system has classically been considered as determined by the balance between the rate of speciation plus net migration and the rate of species extinction. A recent wave of studies integrating comprehensive phenotypic, phylogenetic, and environmental data is accumulating additional macroevolutionary insights at unprecedented scales. In this review, I summarize and discuss the hypothesis that intermediate dispersal ability leads to clades with high species diversity by recurrent speciation events (referred to as the intermediate dispersal hypothesis, IDH). Although some recent empirical and theoretical studies have supported the IDH, further integration of other ecological and evolutionary concepts spanning different timescales is needed to resolve long-standing debates about the non-linear relationship between diversification and organismal dispersal ability. This paper presents a framework for future studies that intend to test the IDH; I organize the factors that should be taken into account, including the indices for quantifying dispersal ability and species diversification, and methods of taxon sampling. The IDH requires more attention and could be used to unveil the diversity of extant species and how dispersal ability affects rates of speciation and extinction.
Type: article
Appears in Collections:生命科学院・先端生命科学研究院 (Graduate School of Life Science / Faculty of Advanced Life Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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