A5055026747- Genetic diversity and population structure
- Rangeland and Wildlife Management
- Plant Water Relations and Carbon Dynamics
- Marine and coastal plant biology
- Ruminant Nutrition and Digestive Physiology
- Ecology and Vegetation Dynamics Studies
- Botany, Ecology, and Taxonomy Studies
- Species Distribution and Climate Change
- Forest ecology and management
- Wheat and Barley Genetics and Pathology
- Insect Pheromone Research and Control
- Bioenergy crop production and management
- Insect Pest Control Strategies
- Tree-ring climate responses
- Plant and Fungal Interactions Research
- Insect behavior and control techniques
- Plant Parasitism and Resistance
- Genetic Mapping and Diversity in Plants and Animals
- Plant Virus Research Studies
- Coastal wetland ecosystem dynamics
- Genetics and Plant Breeding
- Biofuel production and bioconversion
- Plant and animal studies
- Plant Physiology and Cultivation Studies
- Pasture and Agricultural Systems
US Forest Service
2024
United States Geological Survey
2020-2024
Rocky Mountain Research Station
2023-2024
Western Ecological Research Center
2020-2024
Rocky Mountain Research (United States)
2023
United States Department of Agriculture
2023
The University of Texas at Austin
2016-2018
Abstract The evolution of locally adapted ecotypes is a common phenomenon that generates diversity within plant species. However, we know surprisingly little about the genetic mechanisms underlying traits involved in ecotype formation. architecture dictates how an organism will respond to environmental selection pressures, and has major implications for evolutionary ecology, conservation, crop breeding. To understand divergence switchgrass (Panicum virgatum) ecotypes, constructed mapping...
Predicted increases in extreme droughts will likely cause major shifts carbon sequestration and forest composition. Although growth declines during drought are widely documented, an increasing number of studies have reported both positive negative responses to the same drought. These divergent patterns may reflect thresholds (i.e., nonlinear responses) promoted by changes dominant climatic constraints on tree growth. Here we tested whether stemwood exhibited linear or temperature...
Introduction There is growing recognition that restoring species diversity crucial to maintaining ecological functions and services. Increasing the of used in restoration programs has placed greater emphasis on determining seed transfer needs for a wider array plants. However, many plants, outside commercial forestry, lack information would provide guidance current or future climates. Generalized approaches use climate partitioning approximate adaptive differentiation among populations an...
Whitebark pine (
Biofuels derived from lignocellulosic plant material are an important component of current renewable energy strategies. Improvement efforts in biofuel feedstock crops have been primarily focused on increasing biomass yield with less consideration for tissue quality or composition. Four primary components found the cell wall contribute to overall and conversion characteristics, cellulose hemicellulose polysaccharides targets fuel conversion, while lignin ash provide structure defense. We...
Plant-pollinator interactions are thought to be major drivers of floral trait diversity. However, the relative importance divergent pollinator-mediated selection vs. neutral processes in character evolution has rarely been explored. We tested for adaptive by comparing differentiation at genetic loci quantitative traits a putative Ipomopsis aggregata hybrid zone. Typical I. subsp. candida displays slender white tubular flowers that typical pollinated hawkmoths, and collina robust red...
Understanding genetic structure and diversity within species can uncover associations with environmental geographic attributes that highlight adaptive potential inform conservation management. The California gnatcatcher,
Abstract Increasingly, genomic data are being used to supplement field-based ecological studies help evaluate recovery status and trends in endangered species. We collected address 2 related questions regarding the Least Bell’s Vireo (Vireo bellii), an migratory songbird restricted southern California riparian habitat for breeding. First, we sought delineate range limits potential overlap between its sister subspecies, Arizona Vireo, by analyzing samples from deserts of eastern California,...
Current and past climatic changes can shift plant niches, which may cause spatial overlap or separation between related taxa. The former often leads to hybridization introgression, generate novel variation influence the adaptive capacity of plants. An additional mechanism facilitating adaptations environments an important evolutionary driver in plants is polyploidy as result whole genome duplication. Artemisia tridentata (big sagebrush) a landscape-dominating foundational shrub western...
First posted November 19, 2018 For additional information, contact: Director,Western Ecological Research CenterU.S. Geological Survey3020 State University Drive EastSacramento, California 95819 San Diego County is a hotspot of biodiversity, situated at the intersection Baja peninsula, floristic province, and desert southwest. This characterized by high number rare endemic species, which persist alongside major urban epicenter. has implemented strategic management plan that identifies based...