Digital Commons Network^™

Examining The Effects Of Uv On Latex And Nitrile Glove Degradation, Dana Christine Handke

Department of Environmental Studies: Undergraduate Student Theses

Medical gloves, both nitrile and latex, are used as a protective barrier to limit the spread of disease. Gloves are a single use product and their demand is set to increase by 9 to10 percent each year. In 2008, it was estimated that 100 billion gloves were used globally each year (Scott, 2008). This study is exploratory in nature, to determine if Ultra Violet light (UV) exposure can cause an acceleration in the breakdown of latex and nitrile gloves. It was hypothesized that the tensile strength and length to breakage for both glove types, latex and nitrile, would decrease after …

Comparisons Of Drought Institutions Between The U.S. And Korea, Sungbyung Chae

Department of Environmental Studies: Undergraduate Student Theses

Drought occurs in basically dry area around the area of less precipitation but it affects all around the world that can occur anywhere there is a deficit of rainfall from expected levels. This happened by the extreme climate event over land lower precipitation over a period of months to years. This could affect agricultural systems around the world, within food, ecologically atmosphere condition and also the habitation food security. From the developing in the modern technology, since the environment of nature is the basic element of living creature, human would be facing the challenging of agriculture, forestry, fisheries and food …

Proposal To Build A Green Roof On Top Of Hardin Hall On Unl's East Campus, Abbie Andersen

Department of Environmental Studies: Undergraduate Student Theses

The purpose of this study is to research the feasibility of implementing more green roofs around The University of Nebraska-Lincoln’s campuses. To do this investigation a systematic literature review process was used gathering multiple relevant, peer reviewed articles from UNL’s “Encore” search engine. The data was then organized into categories that described the necessary considerations that needed to be made to retrofit green roofs, information on their many benefits, and finally the potential energy cost savings that can be obtained through use of a green roof. From here a proposal for a model green roof on top of UNL’s Hardin …

Changes In Plant Phenology In The Central United States In Response To Climate Change, Sarah Fagras

Department of Environmental Studies: Undergraduate Student Theses

Plant phenophases are highly sensitive to changes in temperature, precipitation, and photoperiod and have recently been identified as an indicator of climate change. Flowering time in particular appears to be sensitive to changes in temperature and plants around the world have already been observed flowering earlier than previously recorded. To determine how plants in the Midwest and Great Plains have reacted to climate change from the 1880s to present, 1,926 plant specimens made up of 10 species were examined to determine their phenophase and date of collection for each specimen was recorded. Analysis of these specimens shows that flowering time …

A Comparison Of Modern Power: Environmental Impacts, Seth Adams

Department of Environmental Studies: Undergraduate Student Theses

There are many aspects of environmental influences that must be considered when evaluating power production methods. Over the course of a six-month literature review this study covered the environmental impact and sustainability of four different power production methods: coal, solar, wind, and nuclear. This study then used the information gathered to create a set of criteria by which each would be evaluated. The goal of this study was to determine the power production method that would deliver the most energy with the least amount of environmental impact. Further, the scope of this study is limited to the midwestern states of …

What Are The Prospects For -Omics-Based Molecular Technologies In Cancer Diagnostics And Treatment, Katya Eriksen

Department of Environmental Studies: Undergraduate Student Theses

Cancer remains one of the leading causes of death in the United States, following the heart disease. New technologies are needed to fight and eventually to eradicate cancer. Omic technologies is a new emerging field of cancer research that may offer cancer patients long awaited opportunities to get faster, more precise personalized medical care, while letting doctors do their job more effectively. The rapid development of omic technologies and large datasets promise a new type of health care system when the patients can be treated according to their own individualized molecular characteristics.

The Impact Of Urbanization And Land-Use Change In Lincoln, Nebraska, Andrew Rose

Department of Environmental Studies: Undergraduate Student Theses

This study will take place in Lincoln Nebraska to investigate population density and urban encroachment onto agricultural lands. With urbanization on the rise we will inevitably face land use issues in the future. This research will investigate one strategy on how to build the city of Lincoln while using agriculture as a focal point. Keeping land sparing techniques in mind as we build will be an important component to saving enough land to grow food, shelter, and clothing for a growing population. One important question that will be looked at in this research is how urban expansion has consumed agricultural …

Climate Action Plan Framework For University Of Nebraska–Lincoln, Lila Peterson

Department of Environmental Studies: Undergraduate Student Theses

No abstract provided.

Activity Patterns Of Nebraskan Wildlife On A Prairie Landscape, Dillon Hanson

Department of Environmental Studies: Undergraduate Student Theses

Avoiding a particular species temporally can be an effective way to live amongst predator and competing species when spatial avoidance is not available. If a predator and prey species overlap temporally there is potential for high predation of the prey species by the predator, while if two predators overlap temporally there is high potential for competition and a loss of opportunities and resources for each species. I assessed if native mammalian species on a natural prairie landscape showed signs of avoidance through their activity patterns. I used photographic sampling to quantify the temporal activity patterns of species at Spring Creek …

Nitrate Contamination And Nitrogen Isotope Compositions In The Bazile Groundwater Management Area: A Water Quality Study. Creighton, Ne, Sydney Corcoran

Department of Environmental Studies: Undergraduate Student Theses

Surface water nitrogen contamination is a pervasive issue in Nebraska, and agricultural practices are the main source of nitrogen input to streams (Spalding and Exner, 1993). Nitrate can come from inorganic fertilizers such as anhydrous ammonia, or animal waste. Studies have been conducted on nitrates dating back to 1947 (Addleman, 1985). The Bazile Groundwater Management Area (BGMA) located in northeast Nebraska has historically had high nitrate contamination. This qualitative study assesses the seasonal sources of nitrogen to stream water. It is predicted that the source of input is from commercial synthetic fertilizers. By using nitrogen- oxygen isotope methods, the source …

A Data-Driven Approach For Detecting Stress In Plants Using Hyperspectral Imagery, Suraj Gampa

School of Computing: Dissertations, Theses, and Student Research

A phenotype is an observable characteristic of an individual and is a function of its genotype and its growth environment. Individuals with different genotypes are impacted differently by exposure to the same environment. Therefore, phenotypes are often used to understand morphological and physiological changes in plants as a function of genotype and biotic and abiotic stress conditions. Phenotypes that measure the level of stress can help mitigate the adverse impacts on the growth cycle of the plant. Image-based plant phenotyping has the potential for early stress detection by means of computing responsive phenotypes in a non-intrusive manner. A large number …

How Are University's Handling Dining Hall Food Waste: Unl Study, Macrae Zappala

Department of Environmental Studies: Undergraduate Student Theses

One of the biggest challenges with the American food system is that 30-40% of our food is wasted every year (EPA, 2018). There are many reasons why food is being wasted around Universities campuses, and there are many ways to divert that wasted material from the landfill. In 2016, a zero-food waste event was held in Harper dining hall, and they found around 70 pounds a night just from a dinner rush. The main objective is aimed to find out how the University of Nebraska Lincoln (UNL) handles their dining hall food waste. This study will look at what Big …

Food Insecurity Among University Of Nebraska–Lincoln Students, Lindsey Bremer

Department of Environmental Studies: Undergraduate Student Theses

A survey of 38 University of Nebraska-Lincoln students was conducted to determine the food insecurity levels of respondents. Food insecurity is defined as limited or uncertain availability of nutritionally adequate and safe foods or limited or uncertain ability to acquire acceptable foods in socially acceptable ways (Bickel et al, 2000). A systematic review of 8 food security studies on college and university students found an average food insecurity level of 43.5%, (Nazmi et al, 2018) while the national level is 11.8% (Coleman-Jensen et al, 2017). The research was driven by the question, What is the food insecurity rate among University …

Student Perception Of Industrial Agriculture: Effects On Migrant Workers And The Environment, Brigitta Bogue, Emma Sorensen

Department of Environmental Studies: Undergraduate Student Theses

Companies such as Tyson Foods and Costco are creating problems through their use of industrial farming practices in Nebraska, such as concentrated animal feeding operations (CAFOs) and monocropping, to generate profit at the cost of humans and the environment. Those most affected are migrant farmworkers from Mexico. The environment is threatened because CAFOs generate greenhouse gases, and pollute nearby waterways with nitrogen. This paper addresses the following research questions: Are students’ perceptions of industrial agricultural companies, such as Costco and Tyson, positive or negative? Are students aware of these issues? How do these perceptions affect issues of sustainability and environmental …

Exploring How Animals Are Viewed In Society Over The Past 150 Years Within Classic Children's Literary Works, Ambrosia Keefe

Department of Environmental Studies: Undergraduate Student Theses

No abstract provided.

How Do Non-Formal Environmental Education Experiences Shape Pro-Environmental Behavior, Megan Petsch

Department of Environmental Studies: Undergraduate Student Theses

This paper attempts to define what behaviors are, what motivates behavior, and how environmental education programs can shape pro-environmental behavior using three factors: social interaction, program structure, and various teaching methods. Data was gathered using a systematic literature review that looked at the purpose and objectives of the paper, methods used for collecting data such as demographics (age, race, gender, location, etc.), the papers focused areas of research, and results. A thematic analysis was also used to code collected data into the themes. The themes that emerged while analyzing the data include social interactions, program structure, and teaching methods. Results …

Barriers Influencing The Success Of Green Teams, Jessica Van Buskirk

Department of Environmental Studies: Undergraduate Student Theses

This paper summarizes the barriers Green Teams in a variety of settings may face. A survey was sent to members of a Green Team project at the University of Nebraska-Lincoln (UNL) to obtain information on barriers faced in order to compare these barriers to other organizations and businesses barriers. This comparison was done by conducting a thematic analysis, which grouped barriers into themes. The themes were compiled and recommendations on how to overcome those barriers were made. Green Teams have many benefits including waste reduction, increased employee satisfaction, and saving the planet from further damage. This study tries to maximize …

Consumer Response To Sustainable Practices Within The Fashion Industry, Gage Mruz

Department of Environmental Studies: Undergraduate Student Theses

This study was conducted online through an environmental company called Greenstain, a registered LLC who provides environmentally sustainable solutions and plants a tree for every item they sell. The purpose of the study is to analyze consumer response to the eco-friendly apparel and other sustainable solutions offered by Greenstain after educating consumers on the extent to which the fashion industry is impacting the natural environment and the practices they can utilize to reduce these negative impacts. The sample size included any person with access to Google, Facebook, and Instagram. Scientists in the world have reached an overwhelming consensus that climate …

The Role Of Dendrology In Analyzing Past Climatic And Historical, Anna Sonnenfeld

Department of Environmental Studies: Undergraduate Student Theses

The study of dendroclimatology uses tree growth responses to climate variables to reconstruct regional, national, and global chronologies from tree-rings (Speer, 2010). The species of focus was Q. macrocarpa (bur oak) located in Spring Creek Prairie because of its potential to hold a chronological history of environmental limitations and management practices in the area. The objective of this research is to: 1) determine the impact of available soil moisture on the annual growth of Q. macrocarpa in Wachiska Woods, 2) determine the effect of management practices on Q. macrocarpa annual growth in Wachiska Woods. Eight Q. macrocarpa specimens were identified; …

Age Structures And Growth Patterns Of Aplodinotus Grunniens In The Red River Of The North, Manitoba, Canada, Kaitlyn Elder

Department of Environmental Studies: Undergraduate Student Theses

A fishery and its components are an integral part of society and contribute not only economically, but also socially and physically to the health and well-being of many countries. There are approximately 12.5 million people who are employed in fishery-related careers, and according to the Wildlife and Sport Fish Restoration, there were over 33.1 million people who fished recreationally. To successfully manage a fish population, one must have a well-rounded knowledge about the species and the environment it inhabits. There is very little previous research done on the growth of Aplodinotus grunniens, otherwise known as freshwater drum (FWD), making it …

Protocol Implementation Plan For Cave Water Quality Monitoring In The Northern Great Plains Network, Narrative Version 1.0, Isabel W. Ashton, Justin S. Mills, Marc Ohms, Daniel Austin, Michael Wiles, Kara Paintner-Green

United States National Park Service: Publications

Executive Summary

The Northern Great Plains Inventory and Monitoring Network includes thirteen park units located in five northern Great Plains states across six ecoregions. Two park units, Jewel Cave National Monument (JECA) and Wind Cave National Park (WICA), protect significant cave resources. These two caves are among the longest caves in the world and have an assortment of underground water resources ranging from drip sites to cave lakes. Subsurface water quantity and quality in the caves is a concern due to groundwater depletion and groundwater contamination from pesticides (aboveground applications), hydrocarbons (vehicle use and related activities), and wastewater effluent (sewage …

Redescription Of Anaschisma (Temnospondyli: Metoposauridae) From The Late Triassic Of Wyoming And The Phylogeny Of The Metoposauridae, Bryan M. Gee, William G. Parker, Adam D. Marsh

United States National Park Service: Publications

Metoposaurids are non-marine temnospondyls that are among the most common constituents of Late Triassic deposits, but despite their abundance, the evolutionary relationships of the group are poorly resolved and have not been fully addressed with modern phylogenetic methods. The genus Anaschisma is one of a number of poorly resolved metoposaurid taxa and was erected to describe two species from the Popo Agie Formation (Carnian) in Wyoming: Anaschisma browni and Anaschisma brachygnatha. Since being named, the genus has been repeatedly synonymized and separated with other taxa in the context of broader revisions of the Metoposauridae. At present, Anaschisma is considered …

Using Artificial Neural Networks To Predict Future Dryland Responses To Human And Climate Disturbances, C.E. Buckland, R.M. Bailey, D.S.G. Thomas

Department of Earth and Atmospheric Sciences: Faculty Publications

Land degradation and sediment remobilisation in dryland environments is considered to be a significant global environmental problem. Given the potential for currently stabilised dune systems to reactivate under climate change and increased anthropogenic pressures, identifying the role of external disturbances in driving geomorphic response is vitally important. We developed a novel approach, using artificial neural networks (ANNs) applied to time series of historical reactivation-deposition events from the Nebraska Sandhills, to determine the relationship between historic periods of sand deposition in semi-arid grasslands and external climatic conditions, land use pressures and wildfire occurrence. We show that both vegetation growth and sediment …

Plant Community Composition And Structure Monitoring At Scotts Bluff National Monument, 2018 Data Report, Isabel W. Ashton

United States National Park Service: Publications

Abstract

This report presents the results of vegetation monitoring efforts in 2018 at Scotts Bluff National Monument (SCBL) by the Northern Great Plains Inventory and Monitoring Network (NGPN) and Fire Ecology Program (NGPFire). This was the eighth year of combined monitoring efforts.

Crew members from NGPN visited eight long-term monitoring plots to collect data on the plant communities at SCBL. This work is part of a long-term monitoring effort designed to provide a better understanding of the condition of the vegetation community and how it changes over time. NGPN staff measured species richness, herb-layer height, native and non-native species abundance, …

Multivariate Analysis Of Hydrochemical Data For Jewel Cave, Wind Cave, And Surrounding Areas, Andrew J. Long, James B. Paces, William G. Eldridge

United States National Park Service: Publications

Abstract

Jewel Cave National Monument and Wind Cave National Park in South Dakota contain two of the six longest caves worldwide. These caves contain subterranean lakes that are important points of intersection between the water table of the Madison aquifer and the caves. During 2015 to 2017, several subterranean lakes were discovered in Jewel Cave, which previously was thought to be above the regional water table. The objectives of this study were to better understand the hydrology of the recently discovered subterranean lakes in Jewel Cave and to evaluate their relation or possible connection to similar lakes in Wind Cave. …

Carbon Dioxide (Co2) And Methane (Ch4) Fluxes From Agricultural Drainage Canals At The Timberlake Observatory For Wetland Restoration In North Carolina’S Coastal Plain, Hannah V. Schleupner, Katherine L. Juarez, Mary J. Carmichael

RURALS: Review of Undergraduate Research in Agricultural and Life Sciences

Wetlands play an integral role in the global biogeochemical cycling of carbon (C). Historically, research on carbon dynamics in wetlands has focused on large-scale wetlands that are easily recognized on the landscape. However, cryptic wetlands- wetlands that may be small-scale, seasonally inundated, and/or otherwise difficult to identify or characterize on a landscape- occur throughout the Earth’s surface. Agricultural drainage canals represent one type of cryptic wetland environment. Even though they are individually small, the collective imprint of drainage canals across a landscape, especially in low-lying regions where land use is dominated by agriculture, may be large. Herein, we measure CO …

Bird Monitoring At Effigy Mounds National Monument, Iowa, Status Report 2009–2017, David G. Peitz, Lloyd W. Morrison, Kristen L. Mecke

United States National Park Service: Publications

Executive Summary

In 2009, the Heartland Inventory and Monitoring (I&M) Network) initiated breeding bird surveys on Effigy Mounds National Monument (NM), Iowa, to address two objectives: (1) to monitor changes in bird community composition and abundance, and (2) to improve our understanding of relationships between breeding birds and habitat and the effects of management actions on such relationships. This report evaluates trends in the park’s breeding bird populations in the context of trends observed within the North American Bird Conservation Initiative’s (NABCI) Prairie Hardwood Transition Bird Conservation Region, the bird conservation region in which the park is located. By doing …

Plant Community Composition And Structure Monitoring At Agate Fossil Beds National Monument, 2018 Data Report, Ryan M. Manuel

United States National Park Service: Publications

Abstract

This report presents the results of vegetation monitoring efforts in 2018 at Agate Fossil Beds National Monument (AGFO) by the Northern Great Plains Inventory and Monitoring Network (NGPN) and the Northern Great Plains Fire Effects Program (NGPFire). This was the eighth year of field work conducted by NGPN at AGFO.

In 2018, crew members from NGPN visited six long-term plant community monitoring (PCM) plots, four legacy plant community monitoring (LPCM) plots, and NGPFire visited one additional PCM plot to collect data on plant communities at AGFO. This collaborative effort is part of a long-term monitoring program established to better …

Soil Moisture Monitoring Using Remote Sensing Data And A Stepwise-Cluster Prediction Model: The Case Of Upper Blue Nile Basin, Ethiopia, Getachew Ayehu, Tsegaye Tadesse, Berhan Gessesse, Yibeltal Yigrem

National Drought Mitigation Center: Faculty Publications

In this study, a residual soil moisture prediction model was developed using the stepwise cluster analysis (SCA) and model prediction approach in the Upper Blue Nile basin. The SCA has the advantage of capturing the nonlinear relationships between remote sensing variables and volumetric soil moisture. The principle of SCA is to generate a set of prediction cluster trees based on a series of cutting and merging process according to a given statistical criterion. The proposed model incorporates the combinations of dual-polarized Sentinel-1 SAR data, normalized difference vegetation index (NDVI), and digital elevation model as input parameters. In this regard, two …

Twenty-Three Unsolved Problems In Hydrology (Uph) – A Community Perspective, Günter Blöschl, Christopher M. U. Neale, A Cast Of Thousands

Daugherty Water for Food Global Institute: Faculty Publications

This paper is the outcome of a community initiative to identify major unsolved scientific problems in hydrology motivated by a need for stronger harmonisation of research efforts. The procedure involved a public consultation through online media, followed by two workshops through which a large number of potential science questions were collated, prioritised, and synthesised. In spite of the diversity of the participants (230 scientists in total), the process revealed much about community priorities and the state of our science: a preference for continuity in research questions rather than radical departures or redirections from past and current work. Questions remain focused …