A5032689117- Genetic diversity and population structure
- Wildlife Ecology and Conservation
- Species Distribution and Climate Change
- Avian ecology and behavior
- Genetic and phenotypic traits in livestock
- Rangeland and Wildlife Management
- Healthcare innovation and challenges
- Ecology and Vegetation Dynamics Studies
- Environmental DNA in Biodiversity Studies
- Plant and animal studies
- Forensic and Genetic Research
- Marine Ecology and Invasive Species
- European Monetary and Fiscal Policies
- Quality and Safety in Healthcare
- Aquatic Invertebrate Ecology and Behavior
- Fire effects on ecosystems
- Irish and British Studies
- Marine animal studies overview
- Aquaculture disease management and microbiota
- Wildlife-Road Interactions and Conservation
- Electronic Health Records Systems
- Ethics in Clinical Research
- Participatory Visual Research Methods
- Healthcare Quality and Management
- Interprofessional Education and Collaboration
University of California, Los Angeles
2017-2023
United States Geological Survey
2012-2019
Western Ecological Research Center
2012-2019
Stanford University
2015-2017
Pacific University
2017
Vancouver Coastal Health
2015
University of Louisiana at Lafayette
2007-2012
Abstract Landscape genetic approaches offer the promise of increasing our understanding influence habitat features on structure. We assessed diversity endangered golden‐cheeked warbler ( Dendroica chrysoparia ) across their breeding range in central Texas and evaluated role loss fragmentation shaping population structure species. determined genotypes nine microsatellite loci 109 individuals from seven sites representing major concentrations No evidence a recent bottleneck was found....
How fast animals move is critical to understanding their energetic requirements, locomotor capacity, and foraging performance, yet current methods for measuring speed via animal-attached devices are not universally applicable. Here we present evaluate a new method that relates forward the stochastic motion of biologging since tag jiggle, amplitude vibrations as measured by high sample rate accelerometers, increases exponentially with increasing speed. We successfully tested this in flow tank...
Abstract Aim We explored lineage diversification within desert‐dwelling fauna. Our goals were (1) to determine whether phylogenetic lineages and population expansions consistent with younger P leistocene climate fluctuation hypotheses or much older events predicted by pre‐ vicariance hypotheses, (2) assess concordance in spatial patterns of genetic divergence diversity among species (3) identify regional evolutionary hotspots their conservation status. Location Mojave, C olorado, S onoran D...
Abstract Achieving long‐term persistence of species in urbanized landscapes requires characterizing population genetic structure to understand and manage the effects anthropogenic disturbance on connectivity. Urbanization over past century coastal southern C alifornia has caused both precipitous loss sage scrub habitat declines populations cactus wren ( ampylorhynchus brunneicapillus ). Using 22 microsatellite loci, we found that remnant aggregations comprised 20 based strict exact tests for...
Habitat loss and fragmentation are primary threats to biodiversity worldwide. We studied the impacts of habitat on genetic connectivity diversity among local aggregations California gnatcatcher (Polioptila californica californica) across its U.S. range. With a dataset 268 individuals genotyped at 19 microsatellite loci, we analyzed structure range using clustering analyses, exact tests for population differentiation, pedigree analysis examine spatial distribution first-order relatives...
Black-capped vireos (Vireo atricapilla), an endangered, migratory species dependent upon early successional habitat, have experienced significant recovery since its protection. In light of vagility and known increase in population size range, limited genetic differentiation would be expected the species. Using 15 microsatellite loci extensive sampling regime, we detected overall (F(ST) = 0.021) high interpopulation compared to other birds. Although proximate sites (separated by < 20 km)...
Genetic diversity within species provides the raw material for adaptation and evolution. Just as regions of high are conservation targets, identifying containing genetic divergence among populations may be important to protect future evolutionary potential. When multiple co-distributed show spatial overlap in divergence, these can considered hotspots. We mapped population structure 17 animal across Mojave Desert, USA. analyzed concurrence located 10 diversity, or both species. These were...
Abstract Anthropogenic alterations in the natural environment can be a potent evolutionary force. For species that have specific habitat requirements, loss result substantial genetic effects, potentially impeding future adaptability and evolution. The endangered black‐capped vireo ( Vireo atricapilla ) suffered contraction of breeding population size during much 20th century. In previous study, we reported significant differentiation between remnant populations, but failed to recover strong...
Populations forming the edge of a species range are often imperiled by isolation and low genetic diversity, with proximity to human population centers being major determinant stability in modern landscapes. Since 1960s, California red-legged frog (Rana draytonii) has undergone extensive declines heavily urbanized southern California, where rapidly contracted northward while shifting its cardinal orientation an east-west trending axis. We studied structure diversity these frontline...
Many utility scale renewable energy projects are currently proposed across the Mojave Ecoregion. Agencies that manage biological resources throughout this region need to understand potential impacts of these and their associated infrastructure (for example, transmission corridors, substations, access roads, etc.) on species movement, genetic exchange among populations, species’ abilities adapt changing environmental conditions. Understanding factors will help managers’ select appropriate...
The authors discuss a qualitative and observational evaluation of patient identification practices in their organization that uncovered serious concern - 90% (n = 55) verification occurrences not matching current organizational policies. These discrepancies provided focus to reassess standardize workflow methods.
Abstract We identified 14 novel polymorphic microsatellite loci in the black‐capped vireo ( Vireo atricapillus ). also attempted to amplify and genotype these other species, including white‐eyed griseus ), red‐eyed olivaceus blue‐headed solitarius In 33 genotyped vireos from two locations, total alleles ranged six 20, with observed heterozygosity ranging 0.58 0.91 expected 0.65 0.93. Two had detectable levels of null alleles. Many were able be amplified related species.
The Pleistocene was characterized by worldwide shifts in community compositions. Some of these were a result changes fire regimes, which influenced the distribution species belonging to fire-dependent communities. We studied an endangered juniper-oak shrubland specialist, black-capped vireo (Vireo atricapilla). This locally extirpated parts Texas and Oklahoma end 1980s as habitat change loss, predation, brood parasitism, anthropogenic suppression. sequenced multiple nuclear loci used...
Migration is driven by a combination of environmental and genetic factors, but many questions remain about those drivers. Potential interactions between variants associated with different migratory phenotypes are rarely the focus study. We pair low coverage whole genome resequencing de novo assembly to examine population structure, inbreeding, factors differentiation resident breeding in species conservation concern, western burrowing owl (
Habitat loss and alteration has driven many species into decline, often to the point of requiring protection intervention avert extinction. Genomic data provide opportunity inform conservation recovery efforts with details about vital evolutionary processes a resolution far beyond that traditional genetic approaches. The tricolored blackbird (
The tricolored blackbird, Agelaius tricolor, is a gregarious species that forms enormous breeding and foraging colonies in wetland agricultural habitats, primarily California, USA. Once extremely abundant, numbers have declined dramatically the past century, largely due to losses of habitats. Tricolored blackbirds are currently listed as Endangered by IUCN, Threatened under California Species Act. Increased genetic information needed detail evolutionary consequences species-wide bottleneck...