4 Works

Data from: Ecological limits on diversification of the Himalayan core Corvoidea

Jonathan David Kennedy, Jason T. Weir, Daniel Marc Hooper, D. Thomas Tietze, Jochen Martens & Trevor Douglas Price
Within regions, differences in the number of species among clades must be explained by clade age, net diversification rate, or immigration. We examine these alternatives by assessing historical causes of the low diversity of a bird parvorder in the Himalayas (the core Corvoidea, 57 species present) relative to its more species rich sister clade. The core Corvoidea contain ecologically diverse species spanning a large range of body sizes and elevations. Despite this diversity, on the...

Data from: Phylogeography of a Tertiary relict plant, Meconopsis cambrica (Papaveraceae), implies the existence of northern refugia for a temperate herb

Francisco J. Valtueña, Christopher D. Preston & Joachim W. Kadereit
The perennial herb Meconopsis cambrica, a western European endemic, is the only European species of the otherwise Himalayan genus Meconopsis and has been interpreted as a Tertiary relict species. Using rbcL and ITS sequence variation, we date the split between M. cambrica and its sister clade Papaver s.str. to the Middle to Upper Miocene (12.8 My, 6.4-19.2 My HPD). Within M. cambrica, cpDNA sequence variation reveals the existence of two groups of populations with a...

Data from: Intraspecific haplotype diversity in Cherleria sedoides L. (Caryophyllaceae) is best explained by chloroplast capture from an extinct species

Abigail J. Moore, Francisco J. Valtueña, Markus S. Dillenberger, Joachim W. Kadereit & Chris D. Preston
Cherleria sedoides, a plant species widespread in alpine areas of the major European mountain ranges and in Scotland, contains two highly divergent chloroplast haplotype groups, one widespread (WH) and one present only in some populations in the Alps (AH). We investigated whether this haplotype diversity is the result of (1) intraspecific differentiation, (2) retention of an ancestral polymorphism or (3) hybridisation. For this purpose, 106 matK sequences from throughout the Caryophyllaceae and 80 trnQ-rps16 and...

Data from: Evolutionary significance of the invasion of introduced populations into the native range of Meconopsis cambrica

Francisco J Valtueña, Christopher D Preston & Joachim W Kadereit
The long history of the deliberate or accidental, human-mediated dispersal of flowering plants has led to the introduction of foreign genotypes of many species into areas of Europe hitherto occupied by potentially distinct native populations. Studies of the genetic and evolutionary consequences of such changes are handicapped by the difficulty of identifying the surviving native populations of many species in the absence of clear morphological differences. We investigated the relationship between putative native and introduced...

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