Digital Commons Network^™

Nitrates In Nebraska Groundwater, Kjersten Hyberger, Adam Carlson, Grace Kollars, Rachael Herpel

Environmental Engagement in the Community (ENVR 319): Student Projects

Environmental Engagement in the Community projects, fall 2022

Slides of a presentation titled Nitrates in Nebraska Groundwater, created in collaboration with Rachael Herpel of the Daugherty Water for Food Global Institute.

Fellow Travelers: Taking Stock Of Faculty Fellows Programs In The Age Of Organizational Development, Susan A. Colby, Laura Cruz, Danielle Cordaro, Clare Cruz

To Improve the Academy: A Journal of Educational Development

Faculty fellows have long served as a staple of centers for teaching and learning (CTLs), but to date little to no evidence has been gathered regarding their broader impact. The current study provides a snapshot of U.S.-based faculty fellows programs today, based on a comprehensive review of CTL websites. We categorize faculty fellows programs across five modalities that reflect decades of evolution and adaptation in the field of educational development. Our findings are intended to provide the foundation for new pathways of research, practice, and inquiry regarding the implementation of CTL fellowship programs.

Project Energy: South Sioux City, City Hall Emissions Reduction, Alayna Cowan, Michael Smilko, Spencer Rahl

Environmental Engagement in the Community (ENVR 319): Student Projects

Environmental Engagement in the Community projects, fall 2022

Video titled Project Energy: South Sioux City, City Hall Emissions Reduction with client South Sioux City, Iowa; Conservation Nebraska; and ICLEI.

Intestinal Parasite Prevalence In Fecal Samples In Nebraska Dog Parks, Kristianna Muller

Honors Program: Senior Projects (Public)

From February to April 2022, fecal samples were collected from eight dog parks in the Omaha and Lincoln, NE areas. A total of 160 samples were collected and assessed for the presence of intestinal parasites. The zinc sulfate double centrifugal flotation technique was used to determine infection. Out of the 160 samples, ten were positive for parasite contamination (6.25% prevalence). The most observed parasites were hookworms, found in 3.75% of all samples (6/160). Cystoisospora, Giardia, Toxocara canis, and Toxascaris leonina were all found only once, for a prevalence of 0.625% each. Compared to other studies, our infection …

Variation In Morpho‑Physiological And Metabolic Responses To Low Nitrogen Stress Across The Sorghum Association Panel, Marcin Grzybowski, Mackenzie Zwiener, Mackenzie Zwiener, Hongyu Jin, Nuwan K. Wijewardane, Abbas Atefi, Michael J. Naldrett, Sophie Alvarez, Yufeng Ge, James C. Schnable

Center for Plant Science Innovation: Faculty Publications

Background: Access to biologically available nitrogen is a key constraint on plant growth in both natural and agricultural settings. Variation in tolerance to nitrogen deficit stress and productivity in nitrogen limited conditions exists both within and between plant species. However, our understanding of changes in different phenotypes under long term low nitrogen stress and their impact on important agronomic traits, such as yield, is still limited.

Results: Here we quantified variation in the metabolic, physiological, and morphological responses of a sorghum association panel assembled to represent global genetic diversity to long term, nitrogen deficit stress and the relationship …

Permafrost Landscape History Shapes Fluvial Chemistry, Ecosystem Carbon Balance, And Potential Trajectories Of Future Change, Scott Zolkos, Suzanne E. Tank, Steven V. Kokelj, Robert G. Striegl, Sarah Shakil, Carolina Voigt, Oliver Sonnentag, William L. Quinton, Edward A.G. Schuur, Donatella Zona, Peter M. Lafleur, Ryan C. Sullivan, Masahito Ueyama, David Billesbach, David Cook, Elyn R. Humphreys, Philip Marsh

Daugherty Water for Food Global Institute: Faculty Publications

Intensifying permafrost thaw alters carbon cycling by mobilizing large amounts of terrestrial substrate into aquatic ecosystems. Yet, few studies have measured aquatic carbon fluxes and constrained drivers of ecosystem carbon balance across heterogeneous Arctic landscapes. Here, we characterized hydrochemical and landscape controls on fluvial carbon cycling, quantified fluvial carbon fluxes, and estimated fluvial contributions to ecosystem carbon balance across 33 watersheds in four ecoregions in the continuous permafrost zone of the western Canadian Arctic: unglaciated uplands, ice-rich moraine, and organic-rich lowlands and till plains. Major ions, stable isotopes, and carbon speciation and fluxes revealed patterns in carbon cycling across ecoregions …

Permafrost Landscape History Shapes Fluvial Chemistry, Ecosystem Carbon Balance, And Potential Trajectories Of Future Change, Scott Zolkos, Suzanne E. Tank, Steven V. Kokelj, Robert G. Striegl, Sarah Shakil, Carolina Voigt, Oliver Sonnentag, William L. Quinton, Edward A. G. Schuur, Donatella Zona, Peter M. Lafleur, Ryan C. Sullivan, Masahito Ueyama, David P. Billesbach, David Cook, Elyn R. Humphreys, Philip Marsh

Department of Agricultural and Biological Systems Engineering: Faculty Publications

Intensifying permafrost thaw alters carbon cycling by mobilizing large amounts of terrestrial substrate into aquatic ecosystems. Yet, few studies have measured aquatic carbon fluxes and constrained drivers of ecosystem carbon balance across heterogeneous Arctic landscapes. Here, we characterized hydrochemical and landscape controls on fluvial carbon cycling, quantified fluvial carbon fluxes, and estimated fluvial contributions to ecosystem carbon balance across 33 watersheds in four ecoregions in the continuous permafrost zone of the western Canadian Arctic: unglaciated uplands, ice-rich moraine, and organic-rich lowlands and till plains. Major ions, stable isotopes, and carbon speciation and fluxes revealed patterns in carbon cycling across ecoregions …

Low Levels Of Hybridization Between Sympatric Cold-Water-Adapted Arctic Cod And Polar Cod In The Beaufort Sea Confirm Genetic Distinctiveness, Robert E. Wilson, Sarah A. Sonsthagen, Philip Lavretsky, Andrew Majewski, Einar Árnason, Katrín Halldórsdóttir, Axel W. Einarsson, Kate Wedemeyer, Sandra L. Talbot

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

As marine ecosystems respond to climate change and other stressors, it is necessary to evaluate current and past hybridization events to gain insight on the outcomes and drivers of such events. Ancestral introgression within the gadids has been suggested to allow cod to inhabit a variety of habitats. Little attention has been given to contemporary hybridization, especially within cold-water-adapted cod (Boreogadus saida Lepechin, 1774 and Arctogadus glacialis Peters, 1872). We used whole-genome, restriction-site associated, and mitochondrial sequence data to explore the degree and direction of hybridization between these species where previous hybridization had not been reported. Although nearly identical …

The Future Of Synbiotics: Rational Formulation And Design, David Fabian Gomez Gomez, Car Reen Kok, Robert Hutkins

Department of Food Science and Technology: Faculty Publications

Synbiotics, mixtures of live microbes and substrates selectively utilized by host organisms, are of considerable interest due to their ability to improve gastrointestinal health. However, formulating synbiotics remains challenging, due in part, to the absence of rational strategies to assess these products for synbiotic activities prior to clinical trials. Currently, synbiotics are formulated as either complementary or synergistic. Complementary synbiotics are made by combining probiotics and prebiotics, with each component acting independently and with the combination shown to provide a clinical health benefit. Most commercial synbiotics as well as those used in clinical trials have been of the complementary type. …

Gamma Sigma Delta, Nebraska Chapter Newsletter, Issue #61 Fall Break 2022

Gamma Sigma Delta, Nebraska Chapter: Newsletters

President’s Message

Award of Merit Recipients: Dr. Richard B. Ferguson & Dr. Janos Zempleni

Teaching Award Recipient: Dr. Renee McFee

Research Award Recipient: Dr. Patricio Grassini

Extension Award Recipient: Dr. Justin McMechan

Outstanding Graduate Student: Gabriela Inveninato Carmona

Outstanding Senior Award: Callie McCright

Outstanding Undergraduate Student: Elizabeth Karnopp

New Members Inducted

When Someone Tells You They’ve Received An Invitation to GSD Membership… How do you respond?

Gamma Sigma Delta Committees

In Memoriam: James Henry Williams Jr., 100; Howard Lyle Wiegers, 105; Terry J. Klopfenstein, 82; William (Bill) Robert Raun, 64; Don Joseph Kubik, 85; Mary Rosalind Morris, 101; Roy L. …

Our Past Creates Our Present: A Brief Overview Of Racism And Colonialism In Western Paleontology, Pedro M. Monarrez, Joshua B. Zimmt, Annaka M. Clement, William Gearty, John J. Jacisin, Kelsey M. Jenkins, Kristopher M. Kusnerik, Ashley W. Poust, Selina V. Robson, Judith A. Sclafani, Kelsey T. Stilson, Shamindri D. Tennakoon, Carmi Milagros Thompson

School of Biological Sciences: Faculty Publications

As practitioners of a historical science, paleontologists and geoscientists are well versed in the idea that the ability to understand and to anticipate the future relies upon our collective knowledge of the past. Despite this understanding, the fundamental role that the history of paleontology and the geosciences plays in shaping the structure and culture of our disciplines is seldom recognized and therefore not acted upon sufficiently. Here, we present a brief review of the history of paleontology and geology in Western countries, with a particular focus on North America since the 1800s. Western paleontology and geology are intertwined with systematic …

Greenhouse Gas Emissions During The Usage Phase Of Electric Vehicles In The United States, Now And In The Future, Zach Roza

Department of Environmental Studies: Undergraduate Student Theses

This is a systematic literature review and a discussion of future trends on the greenhouse gas emissions produced during the usage phase of electric vehicles in the United States now and in the future. The objective of this study was to determine the amount of greenhouse gas emissions produced during the usage phase of an electric vehicle in the US currently and what it is expected to be in the year 2050. The reason that the study was conducted was due to the harmful effects caused by global warming and how large of a role the transportation industry in the …

The Impact Of Interactions Among Native Grassland Species: A Study Of Interactions Between Two Invasive Species (Bromus Tectorum And Setaria Faberi) And Two Native Species (Helianthus Annuus And Rudbeckia Hirta), Nash Leef

Department of Environmental Studies: Undergraduate Student Theses

Allelopathy is a description of an interaction between two plant species, usually negative, that impacts their growth or germination. There has been ample data published regarding the impact of allelopathic species in agricultural settings, but little attention has been given to the potential interactions between invasive and native species. Two culprits that have employed allelopathy to great effect in agricultural settings are cheatgrass (Bromus tectorum) and giant foxtail (Setaria faberi). This study posits that allelopathic interactions, similar to those found in agriculture, are occurring between native and invasive species on the Great Plains.

A set of greenhouse trials was established …

Public Health Impacts Of The Clothing Industry, Schafer Flowerday

Department of Environmental Studies: Undergraduate Student Theses

The clothing industry is worth $1.5 trillion dollars and rapidly expanding (Statista, 2021). The industry is dominated by fast fashion, which accounts for clothing that is quickly and cheaply produced, based on ever-changing trends. 90% of textiles produced are made in low-income countries, predominantly in South Asia (Seigel, 2011). This systematic literature review looks into the impact this industry has on these vulnerable populations which are working and living in areas where clothing is produced. Environmental and Occupational health hazards and impacts were researched. Environmental impacts occur at each step of the process. Polyester is the most common textile, and …

Noise Pollution And Its Effects On Human Mental And Physical Health, Seth Anderson

Department of Environmental Studies: Undergraduate Student Theses

Noise pollution is defined as unwanted sound, capable of causing both mental and physical harm. In order to see if there was a correlation between increasing noise pollution (dB) and (a) increasing Negative Affect Score (NAS), (b) decreasing Positive Affect Score (PAS), and (c) increasing Resting Heart Rate (RHR), research was conducted. Participants were taken to four different testing locations, each with a corresponding dB level, and asked to (a) have their Resting Heart Rate (RHR) taken and (b) fill out a questionnaire based on the Positive and Negative Affect Schedule (PANAS) psychological measure. At the conclusion of this study, …

Supercritical Water Gasification And Pyrolysis: Cleaning Up The Great Pacific Garbage Patch, Kelly L. Emery

Department of Environmental Studies: Undergraduate Student Theses

This research paper is a comparative meta-analysis of gasification of hydrocarbons in supercritical water, specifically concerning the great pacific garbage patch (GPGP). The research explores two ways to clean up the GPGP while also harnessing the waste as biofuel. This research compares the environmental and economic outcomes between supercritical water gasification and pyrolysis. I will be comparing which thermochemical process of converting hydro-pollution into usable, methane-rich gas is most economically beneficial and environmentally sustainable. The relevance of this use of plastic refuse is that it would not just be diverted to a different landfill or back right where it started …

The Accessibility And Sustainability Of Local Foods: A Snapshot From The Food Hubs Of Lincoln, Nebraska, Tess Foxall

Department of Environmental Studies: Undergraduate Student Theses

The current state of agriculture in the United States utilizes industrial practices that pose a myriad of risks to both human and environmental health. By focusing on smaller farms and local food systems that utilize more sustainable agriculture practices, communities can benefit in terms of economic, environmental, and social health. Food hubs can play a key role in local food systems to connect local producers with consumers and increase access to local food. The goal of the research was to analyze the accessibility and sustainability of local food from food hubs in Lincoln, Nebraska to find the key barriers to …

E-Waste Impact On The Health Of Guiyu, China Citizens: A Comparison Pre And Post China’S Prohibition Of Foreign Garbage Imports, Oliva Hultman

Department of Environmental Studies: Undergraduate Student Theses

Electronic Waste (E-waste) is an inevitable product in our society. At the end of a technological products lifespan, this waste is commonly exported from the Western World to places like Guiyu, China. There the waste has been recycled by melting and dissection of devices. However, these devices contain harmful materials like Lead (Pb) and other heavy metals. These components of the technology process, when not properly dealt with, leach into the citizens’ lives. In 2017, China issued a Prohibition on Foreign Garbage Imports where, while focusing on plastics, limited the waste being brought into the country. This study will compare …

Apparent Temperature And Relative Humidity In Nebraska: A Comparative Analysis On Wet Bulb Globe Temperature (Wbgt) Tools, Rachel T. Hines

Department of Environmental Studies: Undergraduate Student Theses

Heat waves can lead to illness and death, particularly among older adults, the very young, and other vulnerable populations. More frequent severe heat waves are expected to impact Nebraska. Looking specifically into Lincoln, NE for future climate trends, over the next 100 years, “the number of hot days would increase by 13-22 days during a given summer (depending upon the scenario), and the number of warm nights would increase by 20-35 nights each summer” Bathke et al. (2014). These higher summer temperatures will “increase electricity use, causing higher summer peak loads” as well as “pose physical and mental health challenges…outdoor …

The Effects Of Human Activity On Reintroduced Bighorn Sheep (Ovis Canadensis) Populations, Justine Cherovsky

Department of Environmental Studies: Undergraduate Student Theses

Since the decimation of North America’s bighorn sheep (Ovis canadensis) populations due to human impacts, translocations have been the primary conservation strategy to repopulate the native habitat. Following the extirpation of the species in Nebraska, bighorns were reintroduced with the hope to establish a stable population, but nearly four decades of management has resulted in large-scale die-offs and unstable herds. Ongoing human impacts have created similar results across the country as reintroductions struggle to establish independent bighorn herds. A systematic literature review was conducted to analyze current human related effects, evaluate the effectiveness of management practices, and compare these findings …

University Of Nebraska Sustainability Recommendations, Kat Woerner

Department of Environmental Studies: Undergraduate Student Theses

In August 2020, the University of Nebraska (NU) system published a 5-year strategic plan with a point to “set and achieve University-wide sustainability goals.” Sustainability efforts at the University of Nebraska are well established as each campus has developed a Sustainability Master Plan (SMP) over the course of the last six years. With limited resources, a system-wide, coordinated effort is critical and requires a hierarchy of actions that are based on: clear goals and metrics that support the university mission, effective tracking systems, policies, strategies, actions, practices that support the goals, and organizational structure to oversee and support implementation.

The …

How Can Stakeholders In Food Sovereignty Achieve More Political Power?, Micah Dierks

Department of Environmental Studies: Undergraduate Student Theses

Food sovereignty (FSv) is a peasant-driven, transnational movement that emerged in response to land-grabbing and the consolidation of power in food production. It advocates for the rights of people to define their own food practices and systems. To provide targeted feedback for movement reflexivity, 21 ecological conflicts referencing food sovereignty were sampled from the Global Atlas of Environmental Justice (the EJAtlas). Involved groups of actors and their forms of mobilization were correlated with interpretations of success from the EJAtlas. I recommend that stakeholders in food sovereignty pursue the acquisition of greater political power through improving messaging, leveraging or disrupting existing …

Reconceptualizing Conservation, S. J. Cooke, Sarah Michaels, E. A. Nyboer, L. Schiller, D. B. R. Littlechild, D. E. L. Hanna, C. D. Robichaud, A. Murdoch, D. Roche, P. Soroye, J. C. Vermaire, V. M. Nguyen, University Of Ottawa,, J. F. Provencher, P. A. Smith, G. W. Mitchell, S. Avery-Gomm, C. M. Davy, R. T. Buxton, T. Rytwinski, L. Fahrig, J. R. Bennett, G. Auld

Department of Political Science: Faculty Publications

Early definitions of conservation focused largely on the end goals of protection or restoration of nature, and the various disciplinary domains that contribute to these ends. Conservation science and practice has evolved beyond being focused on just issues of scarcity and biodiversity decline. To better recognize the inherent links between human behaviour and conservation, “success” in conservation is now being defined in terms that include human rights and needs. We also know that who engages in conservation, and how, dictates the likelihood that conservation science will be embraced and applied to yield conservation gains. Here we present ideas for reconceptualizing …

Land-Use And Potential Effects On The Western Tiger Salamander (Ambystoma Mavortium), Emily Zappia

Department of Environmental Studies: Undergraduate Student Theses

Humans have altered 40% of land across the globefor cropland, rangeland, and pastureland, which, in turn, affects amphibious species like the western tiger salamander (Ambystoma mavortium; WTS)and their viable habitats.Since intensive agriculture increased throughout eastern Nebraska in the 1980’s, the distribution ofA. mavortiumhas declined and the species can no longer be found in the southeast corner of the state, while populations are thriving in the pastures of the Sandhills region. Here we explorethe potential factors contributing to the decline ofA. mavortiumthrough the analysis of climaticand soil characteristic data across the geographic distribution of WTS. Data indicated that precipitation rates, soil …

Reintroduction Of The Grey Wolf, Cody Willers

Department of Environmental Studies: Undergraduate Student Theses

A comprehensive literature review of the topic of the reintroduction of the grey wolf (Canis lupus) into the lower 48 states has been conducted to determine the viability of the grey wolf as a method for managing the overgrowth of medium to large ungulate populations. Due to the overgrowth of medium to large ungulate populations without the presence of the grey wolf, detrimental environmental impacts were being seen on many ecosystems such as Yellowstone in North America. Through predation and the fear of predation, the presence of the grey wolf in these ecosystems can provide a solution to the negative …

Wildfires And Prescribed Fires: Do They Impact Soil Quality?, Kate Nelson

Department of Environmental Studies: Undergraduate Student Theses

Globally, climate change has had an adverse effect on natural phenomena and ecosystem trends, including drastically increasing the number of wildfires that occur annually. As a result, the number of wildfires in the western United States have doubled since 1984. More specifically, ideal wildfire conditions have also prolonged the wildfire season in California. The objectives of this study were to determine if wildfires had an effect on soil quality and determine if wildfires and prescribed fires had different impacts on soil quality in northern California. A literature review was conducted to address the knowledge gaps and understand the perceived changes …

Outdoor Play In Preschool Children: Parent Attitudes And Loose Part Play In Urban Settings, Ann Spilker

School of Natural Resources: Dissertations, Theses, and Student Research

Outdoor play is an important aspect of young children’s health social-cognitive development. However, play in natural environments is declining due to urbanization and various safety concerns. Many urban preschools have outdoor play spaces that lack natural elements that stimulate children’s autonomy, creativity, and imaginative play. Furthermore, parents who find outdoor environments intimidating and fraught with danger limit young children’s outdoor experiences that inhibit their motor fitness, socialization with peers, and ecological awareness. Two qualitative case studies examined preschool children’s outdoor play. Study one focused on preschool children’s loose parts play in urban settings while study two examined parent’s attitudes towards …

New Multimedia Resources For Ecological Resilience Education In Modern University Classrooms, Katharine F. E. Hogan, Julie A. Fowler, Conor D. Barnes, Alison K. Ludwig, Dominic J. Cristiano, Daniel Morales, Rubi Quiñones, Dirac L. Twidwell Jr, Jenny Dauer

School of Natural Resources: Faculty Publications

Solutions to global problems such as climate change and biodiversity loss require educational frameworks and accompanying teaching resources that are theory-based, interdisciplinary, and accessible to broad undergraduate and graduate student audiences. Ecological resilience theory (ERT) is a framework with established interdisciplinary application to complex global problems, but despite an emphasis on the utility of resilience in national higher education frameworks, we found that many current ecology textbooks incorporate multiple definitions and highly variable amounts of discussion on core resilience concepts. To facilitate the use of innovative teaching resources in ERT in universities, this paper describes four free multimedia tools and …

Can We Use Antipredator Behavior Theory To Predict Wildlife Responses To High-Speed Vehicles?, Ryan B. Lunn, Bradley Blackwell, Travis L. Devault, Esteban Fernández-Juricic

United States Department of Agriculture Wildlife Services: Staff Publications

Animals seem to rely on antipredator behavior to avoid vehicle collisions. There is an extensive body of antipredator behavior theory that have been used to predict the distance/time animals should escape from predators. These models have also been used to guide empirical research on escape behavior from vehicles. However, little is known as to whether antipredator behavior models are appropriate to apply to an approaching high-speed vehicle scenario. We addressed this gap by (a) providing an overview of the main hypotheses and predictions of different antipredator behavior models via a literature review, (b) exploring whether these models can generate quantitative …

Preserving The Monarchs, Martin Brannaman, Abby Schroeder, Stephany Pinzon Perez

Environmental Engagement in the Community (ENVR 319): Student Projects

Environmental Engagement in the Community projects, spring 2022

Poster titled Preserving the Monarchs with client Lincoln Electric System.