ArticleEvolution; international journal of organic evolution2015
A comparative analysis of island floras challenges taxonomy-based biogeographical models of speciation.
Article in Evolution; international journal of organic evolution, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- The extension of the taxon cycle model to island plants: insights from the Canarian vascular flora.Biological reviews of the Cambridge Philosophical Society · 2026Article
- Taking the common into account: phylogeographical patterns of native, non-endemic plant species of the Canary Islands.AoB PLANTS · 2026Article
- Island biogeography of the megadiverse plant family Asteraceae.Nature communications · 2024Article
- Genomics of plant speciation.Plant communications · 2023Review
- Intraspecific niche partition without speciation: individual level web polymorphism within a single island spider population.Proceedings. Biological sciences · 2021Article
- Within-island diversification in a passerine bird.Proceedings. Biological sciences · 2020Article
- Searching for Sympatric Speciation in the Genomic Era.BioEssays : news and reviews in molecular, cellular and developmental biology · 2019Review
- Article
- Union of phylogeography and landscape genetics.Proceedings of the National Academy of Sciences of the United States of America · 2016Article
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Authors and funding
4 authors.
Funding
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Abstract
Speciation on islands, and particularly the divergence of species in situ, has long been debated. Here, we present one of the first, complete assessments of the geographic modes of speciation for the flora of a small oceanic island. Cocos Island (Costa Rica) is pristine; it is located 550 km off the Pacific coast of Central America. It harbors 189 native plant species, 33 of which are endemic. Using phylogenetic data from insular and mainland congeneric species, we show that all of the endemic species are derived from independent colonization events rather than in situ speciation. This is in sharp contrast to the results of a study carried out in a comparable system, Lord Howe Island (Australia), where as much as 8.2% of the plant species were the product of sympatric speciation. Differences in physiography and age between the islands may be responsible for the contrasting patterns of speciation observed. Importantly, comparing phylogenetic assessments of the modes of speciation with taxonomy-based measures shows that widely used island biogeography approaches overestimate rates of in situ speciation.
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