Digital Commons Network^™

The Effects Of Plastic Mulch And Irrigation On Hemp Chemistry And Leaf Endophytes, Allison Rietman, Connor Morozumi, Robert C. Pearce, Natalie Christian

Journal of Agricultural Hemp Research

As an emerging crop, cultivation techniques for industrial hemp (Cannabis sativa L.) are still being developed and optimized. For example, irrigation and plastic mulching are some management practices that have been touted for their benefits in improving crop quality. Both techniques ensure ample water availability, which has often been attributed to improving hemp cannabinoid and terpene composition. In this study, we examined how supplemental irrigation implemented in a plastic mulch system influenced the cannabinoid and terpene profiles of one cultivar of CBD hemp, Lifter. We grew industrial hemp in field with plastic mulch and applied regular irrigation to one group …

Pathlength, Altitude And Angle Of Incidence Dependence Of Remote Water Raman Scattering, Whitney E. Schuler, Paige K. Williams, Zechariah B. Kitzhaber, Caitlyn M. English, Tammi L. Richardson, Nikos Vitzilaios, Michael L. Myrick

Faculty Publications

A small remote Raman sensor was used to measure the Raman scattering signal from clear, still water as a function of water depth (12 cm and 396 cm depth), sensor distance above the water surface (20–300 cm), and angle of incidence (0–80°) to the normal of the water surface. Under thick- and thin-sample conditions, the signal depends on either the inverse, or the inverse square, of sensor distance from the water surface, respectively. A model is derived that fits data for different sensor distances, water depths, and angles of incidence. Fits to the measured data are consistent with the known …

Impact Of Irrigation And Micronutrient Treatments On Insect Herbivore Population Dynamics In Soybean, Rahul Debnath, Justin George, Ammar B. Bhandari, Rupesh Kariyat, Gadi V.P. Reddy, James P. Glover, Tulsi P. Kharel, Krishna N. Reddy

Entomology and Plant Pathology Faculty Publications and Presentations

Soybean production is substantially affected by insect pests, necessitating the implementation of appropriate management strategies. Effective irrigation and fertilizer regimes have been found to affect pest populations in agroecosystems. However, their interactive effects on herbivore incidence are less understood. This study reports the abundance and diversity of insect pests, especially hemipteran, lepidopteran, and stink bug species complexes, encountered on soybeans throughout their vegetative and reproductive growth stages under varying irrigation and micronutrient treatments. First, we compared total and major insect pest population densities in irrigated and rainfed conditions. Afterwards, we evaluated how the frequency of insect pests on soybean was …

Notes On Reproduction, Seasonality, And Roost Sites For Silver-Haired Bats (Lasionycteris Noctivagans) In Western Nebraska, Joseph W. Paysen, Dawson V. Kosmicki, Keith Geluso

Transactions of the Nebraska Academy of Sciences and Affiliated Societies

Silver-haired Bats (Lasionycteris noctivagans) are a migratory species found throughout the United States, southern Canada, and northern Mexico. Throughout their range, Silver-haired Bats roost in various tree species, generally within decaying features like cavities and exfoliated bark. Herein we report on additional reproductive and seasonal data as well as the first data on trees used as roost sites by Silver-haired Bats in Nebraska. We captured individuals along a small tributary of the North Platte River at Ash Hollow State Historical Park, Garden County, Nebraska, and tracked bats to their roosts. At this location, we documented lactation on 17 …

A Needed Nomenclature For Nucleosomes, Michael-Christopher Keogh, Genevieve Almouzni, Andrew J Andrews, Karim-Jean Armache, Cheryl H Arrowsmith, Sung Hee Baek, Mark T Bedford, Emily Bernstein, Jacques Côté, Yael David, John M Denu, Beat Fierz, Benjamin A Garcia, Karen C Glass, Or Gozani, Kristian Helin, Steven Henikoff, Ole N Jensen, Steven Z Josefowicz, Neil L Kelleher, Tatiana G Kutateladze, Herbert H Lindner, Chao Lu, Karolin Luger, Parag Mallick, Catherine A Musselman, Tom W Muir, Ljiljana Paša-Tolić, Robert Schneider, Xiaobing Shi, Yang Shi, Simone Sidoli, Lloyd M Smith, Jessica K Tyler, Cynthia Wolberger, Jerry L Workman, Brian D Strahl, Nicolas L Young

Faculty, Staff and Student Publications

Histone post-translational modifications (PTMs) are crucial to eukaryotic genome regulation, with a range of reported functions and mechanisms of action. Though often studied individually, it has long been recognized that the modifications function by combinatorial synergy or antagonism. Interplay may involve PTMs on the same histone, within the same nucleosome (containing a histone octamer), or between nucleosomes in higher-order chromatin. Given this, the field must distinguish ever greater complexity, and the context in which it is studied, with brevity and precision. The proteoform was introduced to define individual forms of a protein by sequence and PTMs, followed by the nucleoform …

Attributes Of Artificial Wetlands Colonized By Ambystoma Maculatum On A Virginia Surface Mine, Hunter Hill, Garrett Stiltner, Walter H. Smith

Virginia Journal of Science

Landscapes impacted by surface mineral extraction present a range of artificial wetland habitats potentially useable by pool-breeding amphibians, although little information exists in the literature detailing which attributes influence breeding site selection by wetland amphibian specialists in post-mined landscapes. We compared attributes of artificial wetlands consistently used and unused as oviposition sites by Spotted Salamanders (Ambystoma maculatum) over a six-year period on a 120-ha former surface mine in Wise County, Virginia, USA. Salamanders non-randomly selected wetlands as oviposition sites, with one-third of available wetlands within the study area showing evidence of ovipositioning. Wetlands used as breeding sites were …

Attitudes Toward The Continued Protection Of Gray Wolves Under The Endangered Species Act, John A. Vucetich, Jeremy T. Bruskotter

Michigan Tech Publications

In February 2024, the U.S. Fish & Wildlife Service announced their intention to develop – for the first time – a National Recovery Plan under the Endangered Species Act (ESA) for gray wolves in the lower 48 states. In August 2025, a federal judge vacated the U.S. Fish and Wildlife Service's (FWS) decision denying ESA protections for gray wolves in the Western U.S.

Those events represent key context for this report, which describes the results of a web-based survey implemented in July and August of 2025 and designed to assess the attitudes of residents of the contiguous United States, as …

The Effects Of Dietary Protein Source On Spine Regeneration In The Sea Urchin Lytechinus Variegatus, Joseph Cortez, Jami De Jesus, Raven A. Edwards, Jeri L. Brandom, Stephen A. Watts

Expo Student Presentations

2025 Fall Expo Poster Presentation

• Biological & Life Sciences

Endocrine Gene Divergence Reflects Precipitation-Driven Adaptation In Sonoran Desert Rattlesnakes, Makinley Ross Kendrick, Austin Biddy, Greer Dolby

Expo Student Presentations

2025 Fall Expo Poster Presentation

• Biological & Life Sciences

Recruitment Progress And Participant Characteristics In The Glo Study, Andre Odom

Expo Student Presentations

2025 Fall Expo Online Oral Presentation

• Biological & Life Sciences

Aav-Progranulin Gene Therapy Corrects Phenotypes Associated With Progranulin Deficiency Up To One-Year Post Injection In Mouse Model Of Frontotemporal Dementia, Hesham Shiekhtholth, Stephanie Fox, Mary Bullock, Erik Roberson

Expo Student Presentations

2025 Fall Expo Oral Presentation

• Biological & Life Sciences

Fisheries Research Report No. 354: Recreational Fishing For Abalone In Western Australia In 2024/2025 - Estimates Of Participation, Effort And Catch, Claire B. Smallwood, Karina L. Ryan, Lachlan W. Strain

Fisheries Research Reports

The Western Australian Recreational Abalone Fishery (RAF) operates in shallow coastal waters as a hand collection fishery while wading or diving. Three species of abalone are allowed to be caught. Roe’s abalone (Haliotis roei) are generally collected while wading from the shore in accessible nearshore reef complexes along the West and South Coast Bioregions. Greenlip abalone (H. laevigata) and Brownlip abalone (H. conicopora) are collected while wading (including snorkelling and freediving) and diving (using compressed air) predominantly along the South Coast Bioregion.

Recreational fishing for the three abalone species is licensed and highly regulated, especially in the Western Zone (which …

Search, The Jackson Laboratory

Search Magazine

No abstract provided.

Course Syllabus For Entomology: Introduction To Acarology, Andrew Prescott

Department of Entomology: Distance Master of Science Projects

Includes an outline and syllabus for an introductory college-level class on acarology, covering both ticks and mites.

The Adventures Of Pip! The Culex Pipiens: An Educational Mosquito Comic Book For Kids, Victoria Garziano

Department of Entomology: Distance Master of Science Projects

“The Adventures of Pip! The Culex pipiens” is an educational comic book series designed to engage a younger audience (4th grade – 5th grade) while introducing them to key topics related to mosquitoes. Although mosquitoes are often viewed solely as a nuisance, they are also fascinating creatures. A better understanding of their life cycle and behavior can improve our ability to manage them effectively. Early education on these topics can raise long-term awareness and behaviors that continue into adulthood. This comic book series offers an accessible and enjoyable format for a science lesson and can be effectively integrated into a …

Save The Bees And The Land: A Framework To Connect The Wildfires In Portugal To The Change In Bee Populations, Lacy Creswell

Portugal: Sustainability and Environmental Justice

Wildfire is an ecological process that is important to ecosystems around the world. Fire is naturally occurring and is also used as a forest management technique to promote biodiversity. While previous studies have analyzed how wildfires affect insects, none of the studies have been based in Portugal about native bees or insects. Additionally, previous studies have addressed the impact wildfire has on land and forests; however, the gap in knowledge is how wildfire directly influences native bee species’ populations. This study assesses how wildfires in Portugal impact the native bee populations and how the lack of pollen and nectar post-fire, …

From Deforestation To Regeneration: Modeling The Potential Of Chakra Agroforestry To Restore Edaphic Invertebrates And Soil Health In The Ecuadorian Amazon, Annika Vikstrom

Ecuador: Comparative Ecology and Conservation

Tropical edaphic invertebrates lie at the intersection of three historically understudied domains: tropical habitats, soil ecosystems, and terrestrial invertebrate biodiversity (Boyle et al. 2024; Lugo et al., 2024). Approximately 80% of tropical invertebrates remain undescribed, leaving major gaps in the understanding of how land-use change and climate change may affect their diversity and ecological function. The Amazon Basin, one of the world’s most biologically and culturally diverse regions, is increasingly threatened by land use change and deforestation. While agriculture is the second main driver of forest conversion in the basin, Indigenous Agroforestry systems such as Kichwa Chakras in the Ecuadorian …

Size Matters: Linkage Between Bromeliad Traits And The Spider Communities They Host In A Disturbed Habitat, Alesandra Fairchild

Ecuador: Comparative Ecology and Conservation

Bromeliads are a plant group that have been praised for their ability to create unique microhabitats, hosting an abundant and diverse faunal community due to their unique structural characteristics. Unfortunately, as deforestation rates rise, this plant group is at risk of decreasing in both abundance and diversity, which puts their associated organisms at risk of losing essential habitat (e.g. spiders). In this study, the effect of bromeliad structural characteristics and forest disturbance was assessed in a mature and secondary forest by classifying bromeliad abundance by forest type, characterizing forest structure, and by analyzing spider abundance and diversity based on these …

The Price Of Gold: Macroinvertebrate Responses To Mining In The Upper Jatunyacu River, Clara Chae

Ecuador: Comparative Ecology and Conservation

Gold mining is rapidly expanding in the upper Jatunyacu River basin of the Ecuadorian Amazon, an ecologically and culturally important region where Indigenous Kichwa communities depend on streams for drinking water, agriculture, and fisheries. This study assessed the ecological condition of five tributary streams across a variety of land uses: primary forest, chakra agroforestry, a stream recovering from historical mining, and a stream downstream of active small-scale gold mining. Benthic macroinvertebrates were collected and identified to morphospecies, and hydromorphological parameters, biodiversity indices, beta diversity metrics, and two biotic indices (AAMBI and BMWP/Col) were used to evaluate ecological integrity. Results showed …

What Do Rural Caregivers Need? Implications Of Formal Service Usage And The Role Of Cooperative Extension Systems, Naomi R. Meinertz, Jeong Eun Lee, Erin L. Martinez, Leacey Brown, Chelsey Byers, Sara Richie, Kathy Tutt

Journal of Human Sciences and Extension

The well-being of caregivers in the U.S. is a public health crisis. Caregivers experience greater rates of depression, chronic disease, and social isolation; however, the context of rural and urban living experiences creates different caregiving realities. Using two representative datasets of caregivers in the North Central and Northeast regions of the U.S., this paper examined the experiences of rural and urban caregivers in using formal support services. Rurality was negatively related to formal support service usage. Results from a multiple regression revealed a positive association between formal service utilization and caregiver well-being. These findings suggested that formal services can play …

A Comprehensive Nutrition Education Program Promotes Behavior Change And Perception Of Food Access Across The Older Adult Age Span, Sarah Misyak, Camille Mcguire, Victor Olayemi, Maria Denunzio, Paige Harrigan, Elena Serrano

Journal of Human Sciences and Extension

Strategies to promote healthy behaviors among older adults are needed to mitigate vulnerabilities to negative health outcomes, especially for those with low income. Healthy Eating and Staying Active as We Age (HESA), a nine-lesson educational series for Supplemental Nutrition Assistance Program-eligible older adults, was created to promote health among aging audiences. The purpose of this study was to evaluate the behavior change of older adults following participation in HESA, which covers food resource management, nutrition, food safety, and physical activity behaviors, as well as perceived food affordability and accessibility, and to determine if HESA is appropriate across the age span …

Mhc Gene Analysis And Immune Variation In Lepidodactylus Lugubris (The Mourning Gecko), Helen T. Vu

2025 Fall Honors Capstones Projects - Archive

The major histocompatibility complex (MHC) plays a central role in vertebrate immune defense by enabling pathogen recognition and initiating adaptive immune responses. While MHC diversity has been extensively studied in sexually reproducing species, comparatively little is known about its evolution in asexual lineages. The parthenogenetic gecko Lepidodactylus lugubris provides a unique opportunity to investigate how clonality and hybrid origins influence immune gene diversity. By leveraging whole-genome data, this study overcomes the limitations of previous transcriptome-based analyses and provides a more comprehensive view of MHC diversity in a clonal vertebrate. As the first step towards understanding MHC evolution in parthenogenetic lizards, …

Dna Methylation Correlates With Transcriptional Noise In Response To Elevated Pco2 In The Eastern Oyster (Crassostrea Virginica), Yaamini R. Venkataraman, Ariana S. Huffmyer, Samuel J. White, Alan Downey-Wall, Jill Ashey, Danielle M. Becker, Zachary Bengtsson, Hollie M. Putnam, Emma Strand, Javier A. Rodríguez-Casariego, Shelly A. Wanamaker, Katie E. Lotterhos, Steven B. Roberts

Biology

Ocean acidification significantly affects marine calcifiers like oysters, warranting the study of molecular mechanisms like DNA methylation that contribute to adaptive plasticity in response to environmental change. However, a consensus has not been reached on the extent to which methylation modules gene expression, and in turn plasticity, in marine invertebrates. In this study, we investigated the impact of pCO₂ on gene expression and DNA methylation in the eastern oyster, Crassostrea virginica. After a 30-day exposure to control (572 ppm) or elevated pCO₂ (2827 ppm), whole-genome bisulfite sequencing (WGBS) and RNA-seq data were generated from adult female gonad tissue …

Investigation Of Metals And Incidental Nanomaterials In Wildland-Urban Interface Fire Ashes And Their Impacts On Marine Phytoplankton, Talal Abdullah Alshehri

Theses and Dissertations

Wildfires are natural processes that have played a vital role in ecosystems for millions of years. However, with increasing anthropogenic activities and climate change, wildfires' frequency and intensity have increased. A wildfire is an uncontrolled fire that burns forests, grasses, and savannas. In addition to vegetation combustible materials, wildfire burn structure items such as homes, stores, and storage sheds in areas where the transition zone between urban and wildland is defined as the wildland-urban interface (WUI). Moreover, wildfires in WUI can burn vehicles, including automobiles, tractors, and boats on trails. Recently, there have been concerns regarding the metals, metalloids, and …

U-Shaped Relationship Between White Blood Cell Counts And Incident Hypertension In Military Young Adults: The Chief Study, 2014–2020, Kun-Zhe Tsai, Chia-Wei Hong, Yun-Chen Chang, Wei-Chun Huang, Xuemei Sui, Carl J. Lavie, Gen-Min Lin

Faculty Publications

Background

Systemic low-grade inflammation, which is characterized by increased counts of blood leukocytes (white blood cells, WBCs), can lead to hypertension, while reduced WBC counts caused by the use of some substances, e.g., alcohol, can also lead to hypertension. However, there have been no studies on the association between WBC counts and the risk of hypertension in young adults.

Methods

This cohort study conducted in Taiwan included a total of 2351 military personnel who were aged 18–39 years, were free of baseline hypertension and were followed up for incident hypertension from 2014 to the end of 2020. Resting blood pressure …

Bioinformatic Analysis Of Pogz Variants In Relation To White Sutton Syndrome, Hannah Rollins

Theses

White-Sutton syndrome (WHSUS) is a rare neurodevelopmental disorder caused by mutations in the Pogo Transposable Element with ZNF Domain (POGZ) gene, which encodes pogo-transposable element with ZNF domain, a chromatin regulator essential for proper mitotic progression and DNA repair. This study uses a bioinformatic framework to evaluate the structural and functional impact of missense mutations in the conserved amino acid region (positions 500–800) of the POGZ protein. Protein modeling, variant effect prediction, conservation analysis, and molecular dynamics simulations were employed to gain an understanding of the effects of POGZ missense mutations on protein structure and movement with specific emphasis on …

Genetic Entropy: A Critical Examination, Sarah Hunter

Science, Faith, and Origins

Genetic entropy is a hypothesis proposing that genomes deteriorate over time due to the gradual accumulation of slightly harmful mutations that natural selection cannot effectively remove. This paper explores the scientific debate surrounding this claim by examining differing perspectives on the theory of genetic entropy. Proponents of genetic entropy, such as John Sanford, argue that most mutations are deleterious and fall within a “near-neutral” range, allowing them to accumulate since their effects are too small for natural selection to detect. Evidence to support this claim includes Robert Carter and John Sanford’s research on the deterioration of the H1N1 viral genome …

Science, Sand, And Faith: Exploring Competing Explanations Of Coconino Sandstone, Emily Schneider

Science, Faith, and Origins

The Coconino Sandstone, a Permian rock layer found in the western United States, is a topic of debate among standard geologists and flood geologists. The conventional geological interpretation claims the sandstone is an eolian deposit, meaning the sediments were deposited by wind (McKee, 1979; Selley, 1968). In their view, key elements of the sandstone, like the cross-stratified beds, high degree of frosting, and the animal trackways, confirm the Coconino’s similarity to modern eolian dunes (McKee, 1979). As this rock layer is sandwiched between layers typically interpreted by flood geologists as being deposited during the flood, the idea that the Coconino …

A Guide To Cicada Wings Of The United States Of America, George Keller

Department of Entomology: Distance Master of Science Projects

This guide was created for people who find cicada wings after a predator has eaten the body. It is nice to know what species of cicada was eaten. This guide will show some of the common species around the United States of America.

The template for the guide will be: Species, range, time of year, wing color, front/hind, wing length, and wing width.

All photos in the guide were taken by the author. The left wings of the cicadas are shown for easy comparison. If the specimen is too damaged then both wings will be shown.

Colony Collapse Disorder And How To Mitigate Losses, Axl Taylor

Department of Entomology: Distance Master of Science Projects

What is Colony Collapse Disorder?

The Role of Varroa destructor in CCD

Viruses and Their Role in CCD

Effects of Nosema in CCD

Habitat Destruction/Nutrition and Its Effect on CCD

Pesticides and their effect on CCD

Mitigating Causes of CCD

Colony Behavior, Social Resilience, and Monitoring

Integrated Management Approaches

Conclusion