Island woodiness underpins accelerated disparification in plant radiations

© 2019 The Authors. New Phytologist © 2019 New Phytologist Trust.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 224(2019), 1 vom: 15. Okt., Seite 518-531
1. Verfasser: Nürk, Nicolai M (VerfasserIn)
Weitere Verfasser: Atchison, Guy W, Hughes, Colin E
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2019
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Andes Hawaiian archipelago Macaronesia (including Canary Islands) adaptive radiation disparification ecological opportunity secondary (insular) woodiness tropical alpine sky islands
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500 |a CommentIn: New Phytol. 2019 Oct;224(1):8-10. doi: 10.1111/nph.15961. - PMID 31222772 
500 |a Citation Status MEDLINE 
520 |a © 2019 The Authors. New Phytologist © 2019 New Phytologist Trust. 
520 |a The evolution of secondary (insular) woodiness and the rapid disparification of plant growth forms associated with island radiations show intriguing parallels between oceanic islands and tropical alpine sky islands. However, the evolutionary significance of these phenomena remains poorly understood and the focus of debate. We explore the evolutionary dynamics of species diversification and trait disparification across evolutionary radiations in contrasting island systems compared with their nonisland relatives. We estimate rates of species diversification, growth form evolution and phenotypic space saturation for the classical oceanic island plant radiations - the Hawaiian silverswords and Macaronesian Echium - and the well-studied sky island radiations of Lupinus and Hypericum in the Andes. We show that secondary woodiness is associated with dispersal to islands and with accelerated rates of species diversification, accelerated disparification of plant growth forms and occupancy of greater phenotypic trait space for island clades than their nonisland relatives, on both oceanic and sky islands. We conclude that secondary woodiness is a prerequisite that could act as a key innovation, manifest as the potential to occupy greater trait space, for plant radiations on island systems in general, further emphasizing the importance of combinations of clade-specific traits and ecological opportunities in driving adaptive radiations 
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650 4 |a Research Support, Non-U.S. Gov't 
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650 4 |a Macaronesia (including Canary Islands) 
650 4 |a adaptive radiation 
650 4 |a disparification 
650 4 |a ecological opportunity 
650 4 |a secondary (insular) woodiness 
650 4 |a tropical alpine sky islands 
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700 1 |a Hughes, Colin E  |e verfasserin  |4 aut 
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