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Articles 1 - 16 of 16
Full-Text Articles in Life Sciences
Soil-Grapevine Interactions: Insight From Verdicchio In The Marche Wine Region, Italy, Megan Luna Barlow
Soil-Grapevine Interactions: Insight From Verdicchio In The Marche Wine Region, Italy, Megan Luna Barlow
Theses and Dissertations
Verdicchio is a white grape varietal notably grown in the Marche wine region of east-central Italy within two Denominazione Origine Controllata (DOCs); Castelli di Jesi and Matelica, located less than 50 km apart. Jesi lies in the Apennine foothills near the coast of the Adriatic Sea and produces a smooth wine noted with apple-pear undertones and crisp, clean acidity. Conversely, Matelica is located in a synclinal valley of a fold-and-thrust belt and produces stronger wine with penetrating floral aromas and bold acidity. While macro-climatic variations do exist between DOCs, this research focuses on geological variations, specifically variations in soil composition, …
Human-Bear Interactions Among Black Bears In Bryce Canyon National Park, Utah, And Polar Bears On Alaska's North Slope, Wesley G. Larson
Human-Bear Interactions Among Black Bears In Bryce Canyon National Park, Utah, And Polar Bears On Alaska's North Slope, Wesley G. Larson
Theses and Dissertations
Human-bear interactions are an important consideration of bear biology, as interactions can lead to destruction of property as well as injury or death for both human and bear. Successful analysis of why these interactions occur can lead to appropriate preventative measures and mitigation of further conflict. Bryce Canyon National Park (BRCA) is comprised of relatively poor bear habitat, but a black bear population exists on the Paunsaugunt Plateau, on which the park occupies the eastern edge. Park managers expressed interest in learning more about bear movements and, specifically, bear use of anthropogenic features following a number of human-bear incidents located …
Using Remote Cameras To Estimate The Abundance Of Ungulates, Jace C. Taylor
Using Remote Cameras To Estimate The Abundance Of Ungulates, Jace C. Taylor
Theses and Dissertations
Many wildlife populations globally are experiencing unprecedented declines, and without accurate and precise estimates of abundance, we will not be able to conserve these vulnerable species. Remote cameras have rapidly advanced as wildlife monitoring tools and may provide accurate and precise estimates of abundance that improve upon traditional methods. Using remote cameras to estimate abundance may be less expensive, less intrusive, less dangerous, and less time consuming than other methods. While it is apparent that remote cameras have a place in the future of wildlife monitoring, research, and management, many questions remain concerning the proper use of these tools. In …
Assembly, Annotation And Optical Mapping Of The A Subgenome Of Avena, Rebekah Ann Lee
Assembly, Annotation And Optical Mapping Of The A Subgenome Of Avena, Rebekah Ann Lee
Theses and Dissertations
Common oat (Avena) has held a significant place within the global crop community for centuries; although its cultivation has decreased over the past century, its nutritional benefits have recently garnered increased interest for human consumption. No published reference sequences are available for any of the three oat subgenomes. Here we report a quality sequence assembly, annotation and hybrid optical map of the A-genome diploid Avena atlantica Baum and Fedak. The assembly is composed of a total of 3,417 contigs with an N50 of 11.86 Mb and an estimated completeness of 97.6%. This genome sequence will be a valuable research tool …
Assembly, Annotation And Optical Mapping Of The A Subgenome Of Avena, Rebekah Ann Lee
Assembly, Annotation And Optical Mapping Of The A Subgenome Of Avena, Rebekah Ann Lee
Theses and Dissertations
Common oat (Avena) has held a significant place within the global crop community for centuries; although its cultivation has decreased over the past century, its nutritional benefits have recently garnered increased interest for human consumption. No published reference sequences are available for any of the three oat subgenomes. Here we report a quality sequence assembly, annotation and hybrid optical map of the A-genome diploid Avena atlantica Baum and Fedak. The assembly is composed of a total of 3,417 contigs with an N50 of 11.86 Mb and an estimated completeness of 97.6%. This genome sequence will be a valuable research tool …
Impacts Of A Mixed Ungulate Community On Aspen Forests: From Landscape To Leaf, Aaron C. Rhodes
Impacts Of A Mixed Ungulate Community On Aspen Forests: From Landscape To Leaf, Aaron C. Rhodes
Theses and Dissertations
This dissertation explores the differential effects of an ungulate community (cattle, mule deer, and American elk) on aspen (Populus tremuloides) regeneration pre- and post-fire disturbance. It's first chapter examines the differential effects of cattle, mule deer, and American elk on aspen regeneration across variable topography, climate and forest type; aspen dominant to conifer dominant subalpine forests. We found that each ungulate species, if sufficiently numerous, can cause aspen regeneration failure. Also, high elevation, southern aspect and high winter snow pack increase resilience to ungulate herbivory. Chapter two compares the efficacy of four methods of estimating ungulate impact on …
Optimizing Monitoring Efforts Of Kit Fox (Vulpes Macrotis) In Utah, Kelsey Alina Richards
Optimizing Monitoring Efforts Of Kit Fox (Vulpes Macrotis) In Utah, Kelsey Alina Richards
Theses and Dissertations
The kit fox (Vulpes macrotis) is a species of conservation concern in western North America. Recent methods for monitoring populations of kit fox include using lures and remote cameras in an occupancy-modeling framework and habitat modeling to predict areas of occupancy. In chapter one, we tested the optimal lure and movement procedure for scent stations to maximize visits and detection of foxes, thereby improving estimates of occupancy. Between May 2015 and October 2016, we placed remote cameras at 522 random locations throughout nine study areas in the Colorado Plateau, Great Basin Desert, and Mojave Desert. Each location was …
Physiological Effects Of Pathogen And Herbivore Risks Encountered By Quaking Aspen, Anson Clark Call
Physiological Effects Of Pathogen And Herbivore Risks Encountered By Quaking Aspen, Anson Clark Call
Theses and Dissertations
Quaking aspen (Populus tremuloides) is the most widely distributed tree in North America (Lindroth and St Clair 2013), and a keystone species in our western montane forests (Worrall et al. 2015). Aspen has become a model organism for studies of genetics and physiology in woody plants (Bradshaw et al. 2000, Taylor 2002). Aspen is also economicallyimportant (Worrall et al. 2015) – wood is harvested for various uses, its scenic beauty helps sustain the tourism economy in many areas, and it has recently been studied as a possible source of biofuel (Sannigrahi et al. 2010). Aspen is also a …
Space Use, Resource Selection, And Survival Of Reintroduced Bighorn Sheep, Rusty Wade Robinson
Space Use, Resource Selection, And Survival Of Reintroduced Bighorn Sheep, Rusty Wade Robinson
Theses and Dissertations
Successful management of bighorn sheep depends on understanding the mechanisms responsible for population growth or decline, habitat selection, and utilization distribution after translocations. We studied a declining population of desert bighorn sheep in the North San Rafael Swell, Utah to determine birthdates of neonates, demographics, limiting factors, population size, probable cause of death, production, and survival. We documented 19 mortalities attributed to a variety of causes including cougar predation (n = 10, 53%), bluetongue virus (n = 2, 11%), reproductive complications (n = 2, 11%), hunter harvest (n = 1, 5%), and unknown (n = 4, 21%). Annual survival of …
The Relationship Between Microbiota, Diet, And Energy Production In The Alpaca, Courtney Carroll
The Relationship Between Microbiota, Diet, And Energy Production In The Alpaca, Courtney Carroll
Theses and Dissertations
The alpaca is a small South American camelid (SAC) that is an important production animal in Peru, especially among the highly impoverished communities of the high Andes, and raised for its fiber and meat. Alpacas are highly reliant on the microbes within their digestive tracts to digest the plant material they consume; volatile fatty acids (VFAs) are released as a byproduct of this microbial fermentation and used as a major source of energy by the alpaca. To explore optimal parameters for alpaca microbiome analysis, performed 16S rRNA gene surveys on alpaca C1 and fecal samples that had been extracted using …
Assessing Phosphorus Sources With A Gis-Based Phosphorus Risk Index In A Mixed-Use, Montane Watershed, Josiah A. Johns
Assessing Phosphorus Sources With A Gis-Based Phosphorus Risk Index In A Mixed-Use, Montane Watershed, Josiah A. Johns
Theses and Dissertations
Elevated phosphorus (P) loading of freshwater lakes and reservoirs often results in poor water quality and negative ecological effects. Critical source areas (CSA) of P in the watershed can be difficult to identify and control. A useful concept for identification of a CSA is the P risk index (P Index) that evaluates the P risk associated with distinct source and transport pathways. The objectives of this study were to create a GIS model that adapts the Minnesota (MN) P Index for use at the watershed scale in a mixed-use, mountain environment, and to evaluate its effectiveness relative to field-based assessment. …
Assessing Phosphorus Sources With Synoptic Sampling In The Surface Waters Of A Mixed-Use, Montane Watershed, Austin Willis Pearce
Assessing Phosphorus Sources With Synoptic Sampling In The Surface Waters Of A Mixed-Use, Montane Watershed, Austin Willis Pearce
Theses and Dissertations
Few elements in surface waters are monitored as closely as phosphorus (P) due to its role in the eutrophication and degradation of surface waters. Limiting P mobilization from source areas is, therefore, a central goal of water quality protection plans. But the work of locating sources in mixed-use watersheds is challenged by the spatial and temporal variability of critical source areas (CSAs) of P. Synoptic sampling is a proven method for capturing the spatial variation of water quality parameters in surface waters, though it's not often used to track temporal dynamics across the same study area. Phosphorus fractionation is an …
Nutrient Loading Reduction In A Tile Drained Agricultural Watershed Through Watershed-Scale Cover Cropping: A High Resolution Analysis, Benjamin Gerald Bruening
Nutrient Loading Reduction In A Tile Drained Agricultural Watershed Through Watershed-Scale Cover Cropping: A High Resolution Analysis, Benjamin Gerald Bruening
Theses and Dissertations
Nutrient pollution originating from agricultural regions in the Midwest is a serious issue, leading to pollution of drinking water sources as well as large hypoxic zones in the Gulf of Mexico. The source of much of this contamination has been shown to be runoff from agricultural fields in the Upper Mississippi River Basin. One method that has been shown to reduce this pollution from the Upper Mississippi River Basin is the planting of winter cover crops. Winter cover crops such as rye and tillage radish have been shown to significantly reduce nitrate exported from agricultural fields, even in tile-drained watersheds …
Determining The Effects Of Sulfur Fertility Levels On Edamame Soybean [ Glycine Max ( L. ) Merrill ] Protein Components, Theoneste Nzaranyimana
Determining The Effects Of Sulfur Fertility Levels On Edamame Soybean [ Glycine Max ( L. ) Merrill ] Protein Components, Theoneste Nzaranyimana
Theses and Dissertations
Edamame [Glycine max (L.) Merr.] a vegetable type soybean is harvested and consumed before reaching its maturity stage (R6). Its health properties drew attention to U.S. consumers because of its high protein content. Proteins are the major structural component of all cells in the living organisms. They are made of essential and non-essential amino acids which play a big role in growth and development and are source of energy. Proteins act as enzymes, antibodies, and hormones and blood protein. Sulfur (S) is a component of the amino acids cysteine (Cys) and methionine (Met) which are the building blocks for proteins. …
Ecological And Genetic Variation Among Populations Of Boechera Caeruleamontana Sp. Nov. (Brassicaceae) From Blue Mountain And Dinosaur National Monumentin Eastern Utah And Western Colorado, Melissa Snyder
Theses and Dissertations
Boechera is a large genus of flowering plants whose taxa are found primarily in North America. Boechera vivariensis (S.L. Welsh) W.A. Weber (the Park rockcress) is restricted to the Uintah Basin on Weber sandstone substrates in the vicinity of Dinosaur National Monument and Blue Mountain. The nomenclature of Park rockcress is significantly impacted by the discovery that the type collections of the taxon represent a rare, apomictic diploid resulting from the hybridization between B. thompsonii and an undescribed sexual diploid (to be called Boechera caeruleamontana sp. nov. Allphin and Windham). As a result, greater information is needed regarding how B. …
Short-Term Effects Of Nutrients On A Barrier Island Grassland Community, Ashley Moulton
Short-Term Effects Of Nutrients On A Barrier Island Grassland Community, Ashley Moulton
Theses and Dissertations
Increased nutrient availability globally has the potential to affect community functional composition of plants in nutrient limited environments, such as coastal grassland systems. Stability of these systems are threatened worldwide by urbanization, as well as effects of sea level rise and increased frequency and intensity of storms, and atmospheric N deposition, associated with climate change. Annual net primary productivity (ANPP), species composition, and functional traits (community weighted specific leaf area (CWSLA), leaf area index (LAI), growth form and photosynthetic pathway) were measured across four treatments to assess multiple resource limitation of nitrogen (N) and phosphorus (P) and functional community response …