ArticleProceedings. Biological sciences2015
Deep and wide valleys drive nested phylogeographic patterns across a montane bird community.
Article in Proceedings. Biological sciences, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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17 citing papers in PubMed.
- Spatial Patterns of Diversity in Forest Birds of Peninsular India.Ecology and evolution · 2025Article
- Speciation in the Peninsular Indian Flying Lizard (Draco dussumieri) Follows Climatic Transition and Not Physical Barriers.Molecular ecology · 2025Article
- Spatial patterns of phylogenetic diversity and endemism in the Western Ghats, India: A case study using ancient predatory arthropods.Ecology and evolution · 2021Article
- Gene Flow in Volant Vertebrates: Species Biology, Ecology and Climate Change.Journal of the Indian Institute of Science · 2021Review
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- Host phylogeny matters: Examining sources of variation in infection risk by blood parasites across a tropical montane bird community in India.Parasites & vectors · 2020Article
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- Determining levels of cryptic diversity within the endemic frog genera, Indirana and Walkerana, of the Western Ghats, India.PloS one · 2020Article
- Genetic delimitation ofPhytoKeys · 2020Article
- Geographical and host species barriers differentially affect generalist and specialist parasite community structure in a tropical sky-island archipelago.Proceedings. Biological sciences · 2019Article
- Palghat gap reveals presence of two diverged populations of Nilgiri tahr (Mitochondrial DNA. Part B, Resources · 2018Article
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- Two new genera of songbirds represent endemic radiations from the Shola Sky Islands of the Western Ghats, India.BMC evolutionary biology · 2017Article
- Sky island bird populations isolated by ancient genetic barriers are characterized by different song traits than those isolated by recent deforestation.Ecology and evolution · 2016Article
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4 authors.
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Abstract
Montane species distributions interrupted by valleys can lead to range fragmentation, differentiation and ultimately speciation. Paleoclimatic fluctuations may accentuate or reduce such diversification by temporally altering the extent of montane habitat and may affect species differentially. We examined how an entire montane bird community of the Western Ghats--a linear, coastal tropical mountain range--responds to topographic valleys that host different habitats. Using genetic data from 23 species (356 individuals) collected across nine locations, we examined if different species in the community reveal spatial concordance in population differentiation, and whether the timing of these divergences correlate with climatic events. Our results reveal a nested effect of valleys, with several species (10 of 23) demonstrating the oldest divergences associated with the widest and deepest valley in the mountain range, the Palghat Gap. Further, a subset of these 10 species revealed younger divergences across shallower, narrower valleys. We recovered discordant divergence times for all valley-affected montane birds, mostly in the Pleistocene, supporting the Pliestocene-pump hypotheses and highlighting the role of climatic fluctuations during this period in driving species evolution. A majority of species remain unaffected by valleys, perhaps owing to geneflow or extinction-recolonization dynamics. Studying almost the entire community allowed us to uncover a range of species' responses, including some generalizable and other unpredicted patterns.
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