Isolation by distance, web service
TLDR
Isolation by Distance Web Service (IBDWS) is a user-friendly web interface for determining patterns of isolation by distance and population genetics analysis software is hosted at http://phage.net/projects/ibdws/.Abstract:
The population genetic pattern known as "isolation by distance" results from spatially limited gene flow and is a commonly observed phenomenon in natural populations. However, few software programs exist for estimating the degree of isolation by distance among populations, and they tend not to be user-friendly. We have created Isolation by Distance Web Service (IBDWS) a user-friendly web interface for determining patterns of isolation by distance. Using this site, population geneticists can perform a variety of powerful statistical tests including Mantel tests, Reduced Major Axis (RMA) regression analysis, as well as calculate F
ST
between all pairs of populations and perform basic summary statistics (e.g., heterozygosity). All statistical results, including publication-quality scatter plots in Postscript format, are returned rapidly to the user and can be easily downloaded. IBDWS population genetics analysis software is hosted at http://phage.sdsu.edu/~jensen/
and documentation is available at http://www.bio.sdsu.edu/pub/andy/IBD.html
. The source code has been made available on Source Forge at http://sourceforge.net/projects/ibdws/
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Citations
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The marine viromes of four oceanic regions
Florent E. Angly,Ben Felts,Mya Breitbart,Peter Salamon,Robert Edwards,Craig H. Carlson,Amy M. Chan,Matthew Haynes,Scott D Kelley,Hong-Hong Liu,Joseph M. Mahaffy,Jennifer E Mueller,Jim Nulton,Robert Olson,Rachel Parsons,Steve Rayhawk,Curtis A. Suttle,Forest Rohwer +17 more
TL;DR: The results support the idea that viruses are widely dispersed and that local environmental conditions enrich for certain viral types through selective pressure.
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Ocean currents help explain population genetic structure
Crow White,Kimberly A. Selkoe,James T Watson,David A. Siegel,Danielle C. Zacherl,Robert J. Toonen +5 more
TL;DR: This study advances the ability to interpret population structure from complex genetic data characteristic of high gene flow species, validates recent advances in oceanographic approaches for assessing larval dispersal and represents a novel approach to characterize population connectivity at small spatial scales germane to conservation and fisheries management.
Journal ArticleDOI
Statistical methods in spatial genetics.
TL;DR: The statistical toolbox available to analyse population genetic data in a spatially explicit framework is reviewed, highlighting not only the potential of various approaches but also methodological pitfalls.
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Identification of genetically and oceanographically distinct blooms of jellyfish
Patricia L. M. Lee,Patricia L. M. Lee,Michael N Dawson,Simon P. Neill,Peter E. Robins,Jonathan D. R. Houghton,Thomas K. Doyle,Graeme C. Hays,Graeme C. Hays +8 more
TL;DR: In this article, the authors used landscape genetics and Lagrangian modelling of oceanographic dispersal to explore patterns of connectivity in the scyphozoan jellyfish Rhizostoma octopus, which occurs en masse at locations in the Irish Sea and northeastern Atlantic.
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Genetic effects of chronic habitat fragmentation in a wind-pollinated tree
Alistair S. Jump,Josep Peñuelas +1 more
TL;DR: The identification of significant effects of forest fragmentation in beech demonstrates that trees are not at reduced risk from environmental change, and should be accounted for in the management of remaining natural and seminatural forest throughout the world.
References
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Journal ArticleDOI
Genetic Differentiation and Estimation of Gene Flow from F -Statistics Under Isolation by Distance
TL;DR: In this paper, the use of isolation by distance models as a basis for the estimation of demographic parameters from measures of population subdivision was re-examined, and the results for values of F-statistics in one-dimensional models and coalescence times in 2D models were provided.
Book
Multivariate Statistical Methods : A Primer
TL;DR: In this article, the problem of displaying many variables in two dimensions is discussed, and the authors propose a method to display and test multivariate data in a multivariate manner using a mixture of multiple regressions.
Journal ArticleDOI
Isolation by distance in equilibrium and non-equilibrium populations.
TL;DR: Analytical theory shows that there is a simple relationship between M̂ and geographic distance in both equilibrium and non‐equilibrium populations and that this relationship is approximately independent of mutation rate when the mutation rate is small.
Journal ArticleDOI
Correlation of pairwise genetic and geographic distance measures: inferring the relative influences of gene flow and drift on the distribution of genetic variability
TL;DR: The model provides a prerequisite for and an alternative to regional FST analyses, which often simply assume regional equilibrium, thus potentially leading to erroneous and misleading inferences regarding regional population structure.
Journal ArticleDOI
IBD (Isolation by Distance): A Program for Analyses of Isolation by Distance
TL;DR: Isolation by distance analyses may help separate the effects of population history from ongoing gene flow, and test the explanatory power of alternative dispersal pathways (Slatkin 1994), as well as assess whether more distant population pairs are more different genetically.