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Identifying Populations for Conservation on the Basis of Genetic Markers
The methods proposed to identify prior- ity areas for conservation of the genetic resources of the argan tree are compared to those sometimes advo- cated in the case of reserve design, where one of the goals is to maximize species richness.
Measuring and testing genetic differentiation with ordered versus unordered alleles.
Two measures of differentiation can be compared for a single data set: one (GST) that makes use only of the allelic frequencies and the other (NST) for which similarities between the haplotypes are taken into account in addition.
Glacial Refugia: Hotspots But Not Melting Pots of Genetic Diversity
European trees and shrubs studied had genetically divergent populations in Mediterranean regions, but the genetically most diverse populations were not located in the south but at intermediate latitudes, a likely consequence of the admixture of divergent lineages colonizing the continent from separate refugia.
Conserving biodiversity under climate change: the rear edge matters.
It is illustrated that rear edge populations are often disproportionately important for the survival and evolution of biota, and some commonly recommended conservation practices might therefore be of little use or even counterproductive for Rear edge populations.
Genetic Consequences of Range Expansions
Interestingly, most of these patterns had been previously attributed to distinct selective processes, showing that taking into account the dynamic nature of a species range can lead to a paradigm shift in the authors' perception of evolutionary processes.
The Hidden Side of Invasions: Massive Introgression by Local Genes
- M. Currat, M. Ruedi, R. Petit, L. Excoffier
- Environmental ScienceEvolution; international journal of organic…
- 1 August 2008
It is shown by spatially explicit simulations that massive introgression of neutral genes takes place during the invasion of an occupied territory if interbreeding is not severely prevented between the invading and the local species.
A new scenario for the quaternary history of European beech populations: palaeobotanical evidence and genetic consequences.
- D. Magri, G. Vendramin, J. de Beaulieu
- Environmental Science, GeographyThe New phytologist
- 1 July 2006
The largely complementary palaeobotanical and genetic data indicate that beech survived the last glacial period in multiple refuge areas and the modern genetic diversity was shaped over multiple glacial-interglacial cycles.
Phylogeographic structure of white oaks throughout the European continent.
The mapped distribution of the haplotypes indicates the probable routes of postglacial recolonization followed by oak populations that had persisted in southern refugia, especially in the Iberian peninsula, Italy and the Balkans.
Spatial Scales of Pollen and Seed-Mediated Gene Flow in Tropical Rain Forest Trees
- C. Dick, O. Hardy, F. A. Jones, R. Petit
- Environmental ScienceTropical Plant Biology
- 26 February 2008
Reviewing studies of gene flow and population genetic structure in tropical rain forest trees and places them in ecological and biogeographic context finds significantly higher genetic differentiation in tropical trees.
Estimation, variance and optimal sampling of gene diversity
It is shown that, at a given locus, there is a unique sample size per population which yields the smallest variance of GST, regardless of the number of populations studied, and the optimal sampling strategy for measuring GST is considered.