Genetic data often exhibit patterns broadly consistent with 'isolation by distance'-a phenomenon where genetic similarity decays with geographic distance. In a heterogeneous habitat, this may occur more quickly in some regions than in others: for example, barriers to gene flow can accelerate differentiation between neighboring groups. We use the concept of 'effective migration' to model the relationship between genetics and geography. In this paradigm, effective migration is low in regions where genetic similarity decays quickly. We present a method to visualize variation in effective migration across a habitat from geographically indexed genetic data. Our approach uses a population genetic model to relate effective migration rates to expected genetic dissimilarities. We illustrate its potential and limitations using simulations and data from elephant, human and Arabidopsis thaliana populations. The resulting visualizations highlight important spatial features of population structure that are difficult to discern using existing methods for summarizing genetic variation.
A multi-dimensional coalescent process applied to multi-allelic selection models and migration models
Maximum likelihood estimation of a migration matrix and effective population sizes in n subpopulations by using a coalescent approach
Geographic patterns of (genetic, morphologic, linguistic) variation: how barriers can be detected by using Monmonier's algorithm
A new individual-based spatial approach for identifying genetic discontinuities in natural populations
The Population Reference Sample, POPRES: a resource for population, disease, and pharmacological genetics research.
Toward a more uniform sampling of human genetic diversity: a survey of worldwide populations by high-density genotyping.
Evidence from Cameroon reveals differences in the genetic structure and histories of chimpanzee populations
Genome-wide patterns of genetic variation in worldwide Arabidopsis thaliana accessions from the RegMap panel.
A quantitative comparison of the similarity between genes and geography in worldwide human populations.
Geographic sampling scheme as a determinant of the major axis of genetic variation in principal components analysis.
Nonstationary patterns of isolation-by-distance: inferring measures of local genetic differentiation with Bayesian kriging
CONSERVATION. Genetic assignment of large seizures of elephant ivory reveals Africa's major poaching hotspots
A longitudinal cline characterizes the genetic structure of human populations in the Tibetan plateau
Persistence of historical population structure in an endangered species despite near-complete biome conversion in California's San Joaquin Desert
Genetic diversity of Atlantic Bluefin tuna in the Mediterranean Sea: insights from genome-wide SNPs and microsatellites
Genome diversity in the Neolithic Globular Amphorae culture and the spread of Indo-European languages
Geographical features are the predominant driver of molecular diversification in widely distributed North American whipsnakes
Environmental extremes drive population structure at the northern range limit of Atlantic salmon in North America
Vanishing refuge? Testing the forest refuge hypothesis in coastal East Africa using genome-wide sequence data for seven amphibians
Long-distance pollen dispersal during recent colonization favors a rapid but partial recovery of genetic diversity in Picea sitchensis
Genome-Wide Characterization of Arabian Peninsula Populations: Shedding Light on the History of a Fundamental Bridge between Continents
A missense variant in FTCD is associated with arsenic metabolism and toxicity phenotypes in Bangladesh
Long-term genetic stability and a high-altitude East Asian origin for the peoples of the high valleys of the Himalayan arc
Genetic Affinities among Southern Africa Hunter-Gatherers and the Impact of Admixing Farmer and Herder Populations
Environmental heterogeneity and not vicariant biogeographic barriers generate community-wide population structure in desert-adapted snakes
Robust Estimation of Recent Effective Population Size from Number of Independent Origins in Soft Sweeps
When are populations not connected like a circuit? Identifying biases in gene flow from coalescent times
Climate drives community-wide divergence within species over a limited spatial scale: evidence from an oceanic island
Along the Indian Ocean Coast: Genomic Variation in Mozambique Provides New Insights into the Bantu Expansion
Population structure of modern-day Italians reveals patterns of ancient and archaic ancestries in Southern Europe
A spatial genomic approach identifies time lags and historical barriers to gene flow in a rapidly fragmenting Appalachian landscape
Altitudinal gradients, biogeographic history and microhabitat adaptation affect fine-scale spatial genetic structure in African and Neotropical populations of an ancient tropical tree species
Using demographic model selection to untangle allopatric divergence and diversification mechanisms in the Rheum palmatum complex in the Eastern Asiatic Region.
Detecting geospatial patterns of Plasmodium falciparum parasite migration in Cambodia using optimized estimated effective migration surfaces.
The extent and meaning of hybridization and introgression between Siberian spruce (Picea obovata) and Norway spruce (Picea abies): cryptic refugia as stepping stones to the west?
Convergent evolution of seasonal camouflage in response to reduced snow cover across the snowshoe hare range.
Asymmetrical gene flow in five co-distributed syngnathids explained by ocean currents and rafting propensity.
Landscape does matter: Disentangling founder effects from natural and human-aided post-introduction dispersal during an ongoing biological invasion.
Divergence, gene flow, and the origin of leapfrog geographic distributions: The history of colour pattern variation in Phyllobates poison-dart frogs.
Cell migration is involved in a variety of physiological and pathological processes such as embryonic development, cancer metastasis, blood vessel formation and remoulding, tissue regeneration, immune surveillance and inflammation. Here is the latest research.