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Phylogenetic analysis of niche divergence reveals distinct evolutionary histories and climate change implications for tropical carnivorous pitcher plants
Nat Biodivers Ctr, Darwinweg 2, NL-2333 CR Leiden, Netherlands..
Nat Biodivers Ctr, Darwinweg 2, NL-2333 CR Leiden, Netherlands..
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Organismal Biology, Systematic Biology. Nat Biodivers Ctr, Darwinweg 2, NL-2333 CR Leiden, Netherlands.;Univ Oslo, Nat Hist Museum, POB 1172, NO-0318 Oslo, Norway..
Nat Biodivers Ctr, Darwinweg 2, NL-2333 CR Leiden, Netherlands..
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2016 (English)In: Diversity & distributions: A journal of biological invasions and biodiversity, ISSN 1366-9516, E-ISSN 1472-4642, Vol. 22, no 1, 97-110 p.Article in journal (Refereed) PublishedText
Abstract [en]

AimTo analyse the underpinnings of historical drivers of diversity and their contributions to current distributions and future roles in a changing climate, we studied the relationship between ecological niche divergence and phylogenetic signal in tropical carnivorous pitcher plants. LocationSoutheast Asia. MethodsEstimates of realized ecological niches were reconstructed and plotted along a newly created multilocus molecular phylogeny. Phylogenetic signal was analysed by comparisons of calculated phylogenetic relatedness with ecological niche divergence. Current and projected future potentially suitable habitats were mapped for several species of plants with variable evolutionary histories and distributions. ResultsHighland and lowland species had distinct phylogenetic signals. Higher altitude species had significantly lower molecular divergence as compared with the lowland species, yet ecological niches with less overlap. When projected onto a future climate scenario, highland species lose a greater amount of potentially suitable habitat compared to lower altitude species, and the majority ofstudied higher altitude species will face an overall loss of future suitable habitat. Main conclusionWe conclude that distinct phylogenetic signals not only unravel differing evolutionary histories but also show that the implications of species' tolerances to future changing climate vary. Over the past million years, historical climate change shaped the differing evolution and ecological niches of highland and lowland tropical pitcher plant species. Rapid, recent radiations of the higher altitude species are reflected in limited molecular divergence, which is in sharp contrast with the more gradually evolved and genetically distinct lower altitude species in our study. Our projections for future potentially suitable habitats show that on-going climate shifts will have detrimental effects on especially the higher altitude species due to a narrower niche tolerance and dramatic loss of potentially suitable habitat.

Place, publisher, year, edition, pages
2016. Vol. 22, no 1, 97-110 p.
Keyword [en]
climate change, ecological niche modelling, molecular divergence, Nepenthes, niche divergence, phylogenetic signal
National Category
Botany Ecology
URN: urn:nbn:se:uu:diva-280094DOI: 10.1111/ddi.12382ISI: 000369066200009OAI: oai:DiVA.org:uu-280094DiVA: diva2:910132
Available from: 2016-03-08 Created: 2016-03-08 Last updated: 2016-03-08Bibliographically approved

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de Boer, Hugo J.
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