WyoScholar Institutional Repository
If you're looking to submit a dataset, please visit the Wyoming Data Repository and follow the User Guide instructions:
https://dataverse.arcc.uwyo.edu/
Recent Submissions
Item Identifying interstate alignment in Species of Greatest Conservation Need(University of Wyoming Libraries, 2025-05-13)State Wildlife Action Plans (SWAPs) shape conservation of wildlife within each state. Every SWAP includes a list of species of greatest conservation need (SGCN), and this list reflects the concerns, priorities, and conservation needs for each state. Because priorities vary between states, a species listed as an SGCN in one state may not be listed in an adjacent state. In many cases, however, conservation efforts could be bolstered by multiple, adjacent states working towards similar goals. To support the conservation of SGCNs, we seek to identify instances where there is interstate alignment between species listed as SGCN in Wyoming and the surrounding states. We will determine whether SGCN listed on Wyoming’s 2017 SWAP are also listed as SGCN in the SWAPs for South Dakota, Nebraska, Colorado, Utah, Idaho, and Montana. By identifying instances of interstate alignment, we hope to identify opportunities for Wyoming and surrounding states to work together towards mutual conservation goals.Item Assessing Vein Density of Fossilized and Modern Ferns at the Cretaceous-Paleogene (K-Pg) Boundry(University of Wyoming Libraries, 2025-05-13)Vein density in ferns can serve as a valuable proxy for past environmental conditions, offering insights into climatic shifts and hydrologic cycling across geological time periods. The vein densities of ferns in a simulated greenhouse experiment replicating the events of the K-Pg mass extinction were analyzed. Each taxon (Athyrium, Dicksonia, and Polystichum) had a significant difference (p < 0.003) in vein densities between the simulated high CO2 state of the Cretaceous and the simulated recovery phase of the Paleocene. This study also examines vein density in ferns from the late Cretaceous and early Paleocene to better understand their role as a disaster taxon during the Cretaceous-Paleogene (K-Pg) mass extinction event. A total of 173 specimens from 28 localities were analyzed using ImageJ to measure vein density, with statistical comparisons conducted through t-tests in R. Two prominent morphotypes that persisted through the K-Pg mass extinction were assessed, comparing their vein densities in the late Cretaceous and early Paleocene. Preliminary results indicate a mixed significant difference across the boundary, with Allantodiopsis erosa (Lesquereux) Knowlton showing a near-significant difference (p = 0.05247), while Woodwardia arctica (Heer) Brown (p = 0.996) showed no notable change (Peppe et al., 2011). These findings contribute to our understanding of fern morphology and their response to ancient climate transitions. Further research needs to be conducted with additional specimens to understand patterns across other morphotypes and sitesItem Streptococcus mutans mechanisms of resistance against phage(University of Wyoming Libraries, 2025-05-13)Streptococcus mutans is a major cause of dental caries worldwide. Targeted therapeutic strategies to eradicate S. mutans include oral phage rinses. In this study, we investigated how phage resistance develops in S. mutans. As a model phage, we used ɸAPCM01, which is known to infect a serotype e strain. We isolated and sequenced the genomes of 15 spontaneous resistant mutants and found that 10 had acquired novel CRISPR spacers targeting the phage, with a total of 18 new spacers identified. Additionally, eight strains contained mutations in rhamnose-glucose polysaccharide (RGP) biosynthetic genes, three of which also acquired spacers. Only the rgp mutants exhibited defects in phage absorption, supporting the role of these cell surface glycans as the phage receptor. Mutations in rgpF and the newly identified gene rgpX led to severe cell division defects and impaired biofilm formation, the latter of which shared by the rgpD mutant. Thus, rgp mutations confer phage resistance but impose severe fitness costs, limiting pathogenic potential. Surprisingly, we found that ɸAPCM01 was capable of binding to and injecting its genome into UA159, a model serotype c strain. However, UA159 was resistant to infection due to an unknown post-entry defense mechanism. Consequently, ɸAPCM01 has the potential to infect both major serotypes associated with dental caries.Item Geologic map of the Red Desert Basin 30' x 60' quadrangle, Sweetwater County, Wyoming(University of Wyoming Libraries, 2025-05-16)This publication features a 1 : 100,000 scale geological map of the Red Desert Basin's 30' x 60' quadrangle in Sweetwater County, Wyoming. The map is a comprehensive update of the area's bedrock geology, combining existing studies with new data from aerial imagery, lidar, and fieldwork. It highlights various geological features, including the eastern edge of the Rock Springs Uplift and the Leucite Hills. The rock layers, dating from the Upper Cretaceous to the Quaternary periods, reveal a complex geological history, with rocks ranging from marine shales and deltaic sandstones to river and lake deposits, as well as rare volcanic rocks called lamproites.Item Geologic map of the Rawlins 30' x 60' quadrangle, Carbon and Sweetwater counties, Wyoming(University of Wyoming Libraries, 2025-05-16)This publication features a 1 : 100,000-scale geologic map of the Rawlins 30' x 60' quadrangle, in Carbon and Sweetwater counties, Wyoming. The map offers a comprehensive update of the area's bedrock geology, combining existing studies with new information from aerial photos, lidar, and fieldwork. It highlights various geological features, such as the Rawlins Uplift, Haystack Mountains, the eastern edge of the Great Divide and Washakie basins, and Miller Hill. The rock layers, ranging from the Precambrian (Mesoarchean) to the Quaternary, illustrate a complex geological history, with a wide range of rock formations found in Wyoming represented within the map area.
Communities in WyoScholar
Select a community to browse its collections.