gene flow

Jane Remfert, Doctoral Candidate

Jane Remfert has successfully completed the necessary steps to proceed to Doctoral Candidate by completing her written and oral defense and submitting her research proposal. Thank you to Drs. Eckert, Gough, Johnson, and Keyghobadi for their insightful comments and expertise in helping to shape a dynamic and exciting research project. Now, you just have to do it!

Talk at Temple!

Giving a talk up at Temple University, last seminar of the year but one I’ve been looking forward to giving for a while.

Model Comparison for Abiotic versus Biotic Pollen Dispersal

An agent-based model with a correlated random walk is used to explore pollination within a forest. For abiotic dispersal, say via the wind, we use a purely random walk where there is no correlation between consecutive steps and for biotic dispersal, …

Applied Population Genetics Textbook Release

I will be posting portions of all 10 chapters of my upcoming textbook, Applied Population Genetics, as early draft chapters to this website over the spring semester.

RVA Urban Dogwood

Here is a map of the dogwood we’ve sampled in the Fan region of Richmond Virginia.

Compiling the GSL Library for OSX

I’ve been working on integrating the Swift language into my analysis workflow but much of what I do involves the GNU Scientific Libraries for matrix analysis and other tools. Here is a quick tutorial on how to install the GSL library on a clean OSX platform. It is easiest if you have XCode installed. You can get this from the App Store for free. Go download it and install it.

Dyer RJ. 2015 Is there such a thing as landscape genetics? Molecular Ecology.

For a scientific discipline to be interdisciplinary it must satisfy two conditions; it must consist of contributions from at least two existing disciplines and it must be able to provide insights, through this interaction, that neither progenitor discipline could address. In this paper, I examine the complete body of peer-reviewed literature self-identified as landscape genetics using the statistical approaches of text mining and natural language processing. The goal here is to quantify the kinds of questions being addressed in landscape genetic studies, the ways in which questions are evaluated mechanistically, and how they are differentiated from the progenitor disciplines of landscape ecology and population genetics.

GStudio: An R Package for Spatial Analysis of Marker Data

This is the main package that provides data types and routines for spatial analysis of genetic marker data. The previous version is currently available on CRAN and you can install it rom within your R environtment by invoking the command install.packages(“gstudio”) If you want to keep up with the latest developments of this package, you can use the version found on GitHub. Install it from within R as: require(devtools) install_github(“dyerlab/gstudio”)

The gravity of pollination: integrating at-site features into spatial analysis of contemporary pollen movement

Pollen-mediated gene flow is a major driver of spatial genetic structure in plant populations. Both individual plant characteristics and site-specific features of the landscape can modify the perceived attractiveness of plants to their pollinators …

Pollination graphs: quantifying pollen pool covariance networks and the influence of intervening landscape on genetic connectivity in the North American understory tree, Cornus florida L.

The manner by which pollinators move across a landscape and their resulting preferences and/or avoidances of travel through particular habitat types can have a significant impact on plant population genetic structure and population-level …