I am a geneticist in Amy Vandergast's lab with the USGS Western Ecological Research Center in San Diego. I am generally interested in conservation, specifically in utilizing genetic techniques to facilitate the preservation of species diversity. In the past, this interest has led to my involvement in work with a range of organisms, from endangered songbirds to fisheries species. I aspire to continue broadening my exposure to new systems and problems in the future, with the overarching goal of reducing our human footprint on the planet. Some brief descriptions of the projects I'm working on at the moment are below.
- Vandergast et al. (2013) Evolutionary hotspots in the Mojave Desert. Diversity 5: 293-319.
- Richmond et al. (2013) Evolutionary dynamics of a rapidly receding southern range boundary in the threatened Califronia Red-Legged Frog (Rana draytonii). Evolutionary Applications
- Wood et al. (2012) Comparative phylogeography reveals deep lineages and regional evolutionary hotspots in the Mojave and Sonoran Deserts. Diversity and Distributions
- G Athrey et al. (2012) Birds in space and time: genetic changes accompanying anthropogenic habitat fragmentation in the endangered black-capped vireo (Vireo atricapilla). Evolutionary Applications
- KR Barr et al. (2011) Missing the forest for the gene trees: conservation genetics is more than the identification of distinct population segments. The Auk 128, 792-794.
- PL Leberg et al. (2010) Implications of landscape alteration for the conservation of genetic diversity of endangered species. IN Molecular Approaches in Natural Resource Conservation and Management (eds J.A. DeWoody et al.). 212-238.
- KR Barr et al. (2008) Population structure in an endangered songbird: maintenance of genetic differentiation despite high vagility and significant population recovery. Molecular Ecology 17, 3628-3639.
- DL Lindsay et al. (2008) Habitat fragmentation and genetic diversity of an endangered, migratory songbird, the Golden-cheeked warbler (Dendroica chrysoparia). Molecular Ecology 17, 2122-2133.
- PB Marko & KR Barr (2007) Basin-scale patterns of mtDNA differentiation and gene flow in the bay scallop, Argopectens irradians concentricus. Marine Ecology Progress Series 349, 139-150.
- KR Barr et al. (2007) Novel microsatellite loci for the study of the black-capped vireo (Vireo atricapillus). Molecular Ecology Notes 7, 1067-1069.
- R Collin, MJ Wonham, KR Barr (2006) Crepidula convexa Say, 1822 (Caenogastropoda: Calyptraeidae) in Washington State, USA. American Malacological Bulletin 21, 113-116.
Monday, March 26, 2012
The California Gnatcher is protected by the federal government as a threatened species. Habitat loss from fire, urbanization, and agriculture has severely reduced populations throughout the bird's range in southern California. We are studying genetic diversity and population differentiation in the songbird to facility future management efforts.
The Coastal Cactus Wren, a putative subspecies with a range from Orange County south to just across the Mexican border, is protected by the state of California as a species of special concern. Habitat loss from fire, urbanization, and agriculture have sharply reduced populations throughout its narrow range. We are studying genetic diversity and population differentiation in the species in hopes of facilitating future management efforts.
The Southwest Willow Flycatcher is a federally protected subspecies, with a breeding range limited to the extreme southwestern portion of the US, from southern California to far west Texas. Habitat loss along waterways have decimated bird populations throughout this range. In San Diego, only a few dozen birds return from their wintering grounds each year. We are studying the effects of extreme low population size on genetic diversity over an extended period of time.
The California redlegged frog is a threatened species, receiving status protection by the state of California. Its populations have been severely reduced in southern California, the product of introduced species (eg, bullfrogs), habitat loss, and fire. We are studying genetic diversity and population differentiation in the species in hopes of facilitating future management efforts.