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Aim
Regional disjunction in mountainous regions is ubiquitous and is closely associated with the evolution of mountain biodiversity. However, the mechanisms of maintaining regional disjunction are often ignored, especially regarding the role of ecological barriers. The aim of this study is to test whether an ecological barrier maintains the regional disjunction of Roscoea between the Himalayas (HIM)...
AimEcological differentiation of closely related species has attracted wide attention to explore its evolutionary significance in speciation. In particular, the prevalence of ecological speciation of sister species driven by Quaternary climate changes is debated. Here, we used two parapatric sister species, Roscoea humeana and R. cautleoides, to test whether ecological speciation was associated with...
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