ArticleBMC evolutionary biology2020
Last Glacial Maximum led to community-wide population expansion in a montane songbird radiation in highland Papua New Guinea.
Article in BMC evolutionary biology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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10 citing papers in PubMed.
- Differential Demographic Trajectories and Polygenic Adaptation to Monsoon Seasonality in Sky Island Hercules Beetle Populations of the American Southwest.Molecular ecology · 2026Article
- Evolution and Climate Adaptation in Eurasian Gyrfalcon Populations.Ecology and evolution · 2026Article
- Museomics unravels cryptic diversity in an endemic group of New Guinean songbirds.Biology letters · 2025Article
- The formation of the Indo-Pacific montane avifauna.Nature communications · 2023Article
- Population genomics of the island thrush elucidates one of earth's great archipelagic radiations.Evolution letters · 2023Article
- The formation of avian montane diversity across barriers and along elevational gradients.Nature communications · 2022Article
- Island Biogeography Revisited: Museomics Reveals Affinities of Shelf Island Birds Determined by Bathymetry and Paleo-Rivers, Not by Distance to Mainland.Molecular biology and evolution · 2022Article
- Molecular Phylogeography and Intraspecific Divergences in Siberian Wildrye (Frontiers in plant science · 2022Article
- Impact of model assumptions on demographic inferences: the case study of two sympatric mouse lemurs in northwestern Madagascar.BMC ecology and evolution · 2021Article
- Past environmental changes affected lemur population dynamics prior to human impact in Madagascar.Communications biology · 2021Article
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5 authors.
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Abstract
backgroundQuaternary climate fluctuations are an engine of biotic diversification. Global cooling cycles, such as the Last Glacial Maximum (LGM), are known to have fragmented the ranges of higher-latitude fauna and flora into smaller refugia, dramatically reducing species ranges. However, relatively less is known about the effects of cooling cycles on tropical biota.
resultsWe analyzed thousands of genome-wide DNA markers across an assemblage of three closely related understorey-inhabiting scrubwrens (Sericornis and Aethomyias; Aves) from montane forest along an elevational gradient on Mt. Wilhelm, the highest mountain of Papua New Guinea. Despite species-specific differences in elevational preference, we found limited differentiation within each scrubwren species, but detected a strong genomic signature of simultaneous population expansions at 27-29 ka, coinciding with the onset of the LGM.
conclusionThe remarkable synchronous timing of population expansions of all three species demonstrates the importance of global cooling cycles in expanding highland habitat. Global cooling cycles have likely had strongly different impacts on tropical montane areas versus boreal and temperate latitudes, leading to population expansions in the former and serious fragmentation in the latter.
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