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Data from: The importance of migratory drop-off for island colonization in birds

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2024

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Dufour, Paul
Sayol, Ferran
Cooke, Rob
Blackburn, Tim
Gallien, Laure
Steinbauer, Manuel
Faurby, Søren

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Zusammenfassung

Seasonal migration is an underappreciated driver of animal diversification. Changes in migratory behavior may favor the establishment of sedentary founder populations and promote speciation if there is sufficient reproductive isolation between sedentary and migratory populations. From a systematic literature review, we here quantify the role of migratory drop-off – the loss of migratory behavior – in promoting speciation in birds on islands. We identify at least 157 independent colonization events likely initiated by migratory species that led to speciation, including 44 cases among recently extinct species. By comparing, for all islands, the proportion of island endemic species that derived from migratory drop-off with the proportion of migratory species among potential colonizers, we showed that seasonal migration has a larger effect on island endemic richness than direct dispersal. We also found that the role of migration in island colonization increases with the geographic isolation of islands. Furthermore, the success of speciation events depends in part on species biogeographic and ecological factors, here positively associated with greater range size and larger flock sizes. These results highlight the importance of shifts in migratory behavior in speciation process and calls for greater consideration of migratory drop-off in the biogeographic distribution of birds.

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Fachgebiet (DDC)
570 Biowissenschaften, Biologie

Schlagwörter

FOS: Biological sciences, seasonal migration, extinct species, long distance dispersal, Island biogeography, Birds

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The importance of migratory drop-off for island colonization in birds
(2024) Dufour, Paul; Sayol, Ferran; Cooke, Rob; Blackburn, Tim M.; Gallien, Laure; Griesser, Michael; Steinbauer, Manuel J.; Faurby, Søren
Erschienen in: Proceedings of the Royal Society of London, Series B : Biological Sciences. Royal Society of London. 2024, 291(2021), 20232926. ISSN 0962-8452. eISSN 1471-2954. Verfügbar unter: doi: 10.1098/rspb.2023.2926
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ISO 690DUFOUR, Paul, Ferran SAYOL, Rob COOKE, Tim BLACKBURN, Laure GALLIEN, Michael GRIESSER, Manuel STEINBAUER, Søren FAURBY, 2024. Data from: The importance of migratory drop-off for island colonization in birds
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