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Articles 361 - 390 of 967
Full-Text Articles in Entire DC Network
Tyler Clevenger: Advancing Climate Policy At Home And Abroad, Christina Nunez
Tyler Clevenger: Advancing Climate Policy At Home And Abroad, Christina Nunez
Colby Magazine
"I appreciated pretty early on that [climate] would represent my generation's defining challenge, it would take the best that we as people have to offer." -Tyler Clevenger '18
Sandy Buck '78: Seeing Light Amidst The Gloom, Gerry Boyle
Sandy Buck '78: Seeing Light Amidst The Gloom, Gerry Boyle
Colby Magazine
"If you look at the macro you could come to a grinding halt and throw your hand up. But when you look at the local, and even state and regional levels, there are reasons for hope." -Sandy Buck '78
The Impact Of Extreme Heat On Environmental Justice Communities In California: Assessing Equity In Climate Action Plans, Karishma S. Becha
The Impact Of Extreme Heat On Environmental Justice Communities In California: Assessing Equity In Climate Action Plans, Karishma S. Becha
Master's Projects and Capstones
Climate change projections suggest extreme heat events will be more frequent over the next few decades. Extreme heat has both negative environmental and social impacts as it affects energy security, public health by increasing the risk of heat-related illnesses and stresses food and crop supply through prolonged droughts. The impacts of extreme heat will also disproportionately affect communities of low economic status. Because of this, there is a need for better climate action plans that can adapt to and mitigate the impacts brought upon by extreme heat that does not disproportionately impact vulnerable communities. This research analyzed local government Climate …
The Research And Analysis Of Potential Gray Wolf (Canis Lupus) Habitats And Gray Wolf Management In The U.S., Youhan Mei
The Research And Analysis Of Potential Gray Wolf (Canis Lupus) Habitats And Gray Wolf Management In The U.S., Youhan Mei
Department of Environmental Studies: Undergraduate Student Theses
The Gray Wolf (Canis lupus) is a keystone species that have significant impacts on the ecosystem where they belong. They used to have a wide range of habitat across the whole of North America. In 1960, the wolves were treated as threats to the safety of humans and livestock. They were wiped out by the government of the day and only had few populations left in Minnesota and Michigan. Today, there are identified in the “Red List) of International Union for Conservation of Nature as endangered species all around the U.S. This shows the urgent need for conservation, …
Tree Removal Analysis Of The 2018-2019 Gambles Mill Eco-Corridor Restoration, Zach Harrell
Tree Removal Analysis Of The 2018-2019 Gambles Mill Eco-Corridor Restoration, Zach Harrell
Environmental Studies Senior Seminar Projects
Trees have been extensively researched, and it has been concluded that they are useful not only useful tools in enhancing biofiltration, as well as managing stormwater and retaining sediment, but they also benefit the health of the ecosystem as a whole. But as the University of Richmond’s Gambles Mill Eco-corridor was restored between 2018 and 2019 in order limit to the amount of phosphorus, nitrogen, and other sediment flowing into the Little Westham Creek; many of the trees that combat these problems were removed. The following research intends to analyze the number of trees actually removed throughout the restoration, as …
Step Pools: Examining The Flow Resistance And Stability Of Artificial Step Pools In Comparison With Their Natural Counterparts, Quinn Kirkpatrick
Step Pools: Examining The Flow Resistance And Stability Of Artificial Step Pools In Comparison With Their Natural Counterparts, Quinn Kirkpatrick
Environmental Studies Senior Seminar Projects
This study looked at step pool stream studies, reports, and field data in five catchment areas. The areas of interest include the Rio Cordon catchment area in Italy, the Cascade Mountain Range in Washington, the Siuslaw National Forest in Oregon, various areas in California, the University of Richmond in Virginia, and the Arkansas River Basin in Colorado. The purpose of this study was to compare the flow resistance and stability after large flooding events of artificial and natural step pool sequences to potentially provide information to improve monitoring of newly installed step pools and the design of future step pool …
Stream Restoration As A Method Of Improving Local Water Quality, Emily George
Stream Restoration As A Method Of Improving Local Water Quality, Emily George
Environmental Studies Senior Seminar Projects
Projects of stream restoration are a known Best Management Practice (BMP) to approach stormwater management, and have been adopted globally as a means of improving local hydrology. Urbanization has led to an increase in impervious surfaces, resulting in deteriorated streams, many of which are subject to stream restoration. Stormwater control measures (SCM), such as stream restoration, are considered to be a subset of green infrastructure as a method to reconnect streams with surrounding riparian areas, revitalize original hydrology, and support the local ecosystems. This paper looks into the viability of stream restoration as a way of improving water quality, focusing …
Exploring Options For Mussel Restoration, Henry Hurt
Exploring Options For Mussel Restoration, Henry Hurt
Environmental Studies Senior Seminar Projects
This paper seeks to explore the feasibility and possible procedures of restoring freshwater mussels to the Little Westham Creek (LWC) as a way to reduce excess organic pollutants such as nitrogen and phosphorus coming from upstream. To this end, the use of mussels in bioremediation and restoration procedures found in scientific literature were reviewed with the goal of creating a guideline of how such a project would be carried out at the Gambles Mill Eco- Corridor. Based on the results of past literature, water data collected by students in this seminar, and data from RES, it was estimated that a …
Cost Benefit Analysis And Beyond: Stream Restoration In Richmond, Virginia, Claire Powell
Cost Benefit Analysis And Beyond: Stream Restoration In Richmond, Virginia, Claire Powell
Environmental Studies Senior Seminar Projects
This research assessed the costs and benefits of six recent stream restoration projects in Richmond, Virginia within the context of the Chesapeake Bay Total Maximum Daily Load (CB TMDL) pollutant reduction requirements. In order to meet these requirements, state and local governments promoted stream restoration as an important way to reduce Bay-wide inputs of nitrogen, phosphorus, and total suspended solids. The overall intention of this paper was to holistically evaluate the risks and positive impacts associated with stream restoration, with a focus on Little Westham Creek, a stream restoration project located on the University of Richmond campus. I hypothesized that …
Is Niagara Falls Fake?, Daniel Macfarlane
Is Niagara Falls Fake?, Daniel Macfarlane
Faculty Research and Creative Activities Award (FRACAA)
Niagara Falls became a type of machine blending the organic and mechanical, a hybrid envirotechnical infrastructure that is as much artificial as natural.
Statistical Analysis Of Nutrient Loads From The Mississippi-Atchafalaya River Basin (Marb) To The Gulf Of Mexico, Phyllis Okwan, Yi Zhen, Huan Feng, Shinjae Yoo, Murty S. Kambhampati, Abreione Walker, Shayne Boykin, Joe Omojola, Noel Blackburn
Statistical Analysis Of Nutrient Loads From The Mississippi-Atchafalaya River Basin (Marb) To The Gulf Of Mexico, Phyllis Okwan, Yi Zhen, Huan Feng, Shinjae Yoo, Murty S. Kambhampati, Abreione Walker, Shayne Boykin, Joe Omojola, Noel Blackburn
Department of Earth and Environmental Studies Faculty Scholarship and Creative Works
This study investigated the annual and seasonal variations in nutrient loads (NO2− + NO3− and orthophosphate) delivered to the Gulf of Mexico from the Mississippi-Atchafalaya River Basin (MARB) and examined the water quality variations. The results indicate that (1) annually, the mean NO2− + NO3− and orthophosphate loads showed a steady increase during 1996–1999, a persistent level during 2000–2007, and a moderate increase during 2008–2016; (2) seasonally, NO2− + NO3− and orthophosphate in MARB in spring and summer were higher than those in autumn and winter. Analysis of …
The Interplay Between Economic Growth And The Environment: The Case Of China, Christian D. Carpio-Thomas
The Interplay Between Economic Growth And The Environment: The Case Of China, Christian D. Carpio-Thomas
Electronic Theses and Dissertations
Historically, economic development has come at the cost of environmental degradation. Since the 1980s, neoliberalism rooted in neoclassical theory has dominated mainstream economic thought. The result has been a dramatic increase in environmental degradation in favor of economic growth. The neoliberal recommendations toward development are encapsulated in the Washington and post-Washington Consensuses which promote the liberalization of trade and foreign investment as well as a reliance on market mechanisms. Ultimately, the goal of neoliberalism is to generate growth regardless of the impact that it places on the environment. The case of China presents an example of an economy which pursued …
Abatement Of Per- And Polyfluoroalkyl Substances With Electrochemical Oxidation, Elise Webb
Abatement Of Per- And Polyfluoroalkyl Substances With Electrochemical Oxidation, Elise Webb
Department of Environmental Studies: Undergraduate Student Theses
Throughout the United States, there is a growing concern for contamination of groundwater with harmful per- and polyfluoroalkyl substances (PFAS). These forever chemicals have no natural degradation pathways and the science community has not had any significant breakthroughs to remediate contaminated sites. Electrochemical oxidation using a boron-doped diamond (BDD) electrode shows excellent potential for becoming an effective therapy for such PFAS contaminated sites. The objective of this research is to provide proof-of-concept that electrochemical oxidation can degrade PFAS, ensure analysis is accurate, and controls of experimental design are optimal. Electrochemical oxidation degraded 10 mg/L perfluorooctanoic acid (PFOA) under a series …
Environmental Factors On The Arctic Food Chain, Sydney Hansen
Environmental Factors On The Arctic Food Chain, Sydney Hansen
Department of Environmental Studies: Undergraduate Student Theses
As the Arctic is encountering many environmental changes, a multi-species meta-analysis was conducted from peer-reviewed scientific data gathered from the University of Nebraska-Lincoln (UNL) library’s bibliographic databases to determine 1) the main polar warming impacts on species of the Arctic food web such as polar bears, ringed seals, Arctic cod, copepods, and primary producers, 2) determine climatic impacts by looking at population sizes and migratory patterns over several years, and 3) discover impacts of a top-down cascade and look into conservation efforts. In the Arctic, species within its’ ecosystem are experiencing more dramatic impacts from climatic warming because of the …
Nutritional Value Of Crops Affected By Elevated Carbon Dioxide Concentrations In Atmospheric Conditions, Alex Joseph Cusimano
Nutritional Value Of Crops Affected By Elevated Carbon Dioxide Concentrations In Atmospheric Conditions, Alex Joseph Cusimano
Department of Environmental Studies: Undergraduate Student Theses
This research was conducted to evaluate the effects of rising atmospheric carbon dioxide concentrations, and the nutritional quality of crops. Using Free Air CO2 Enrichment (FACE) and Decision Support System for Agrotechnology Transfer (DSSAT) to simulate elevated carbon dioxide levels, more review of previous literature was studied. Studies found that although there is a negative loss of nutrient availability, there are major signs that nutrient deficiencies. Nitrogen(protein), Iron, and Zinc are the most impacted with elevated atmospheric CO2 conditions. Further research and experiments regarding long term plant growth should be considered moving forward. With only limted situations and different CO2 …
Analysis Of Trees Damaged From Flooding And Ice In Columbus, Nebraska, Alaina Kapla
Analysis Of Trees Damaged From Flooding And Ice In Columbus, Nebraska, Alaina Kapla
Department of Environmental Studies: Undergraduate Student Theses
In the spring of 2019, an intense storm system came through eastern Nebraska resulting in a historic flooding event. This flood caused many trees throughout the state to be uprooted, broken, or scarred. This study looks at trees on the Quail Run golf course in Columbus, Nebraska to determine the extent of damage on trees caused by flooding and recommend tree care solutions to ensure safety. The cottonwood trees endured the most damage compared to other species on the property. All of the trees showed wound wood meaning that the trees were recovering from their injuries. Dead and broken branches …
Observing Spectral Response Differences In Freshwater Lakes Using Remote Sensing Technology, Brady Cooper
Observing Spectral Response Differences In Freshwater Lakes Using Remote Sensing Technology, Brady Cooper
Department of Environmental Studies: Undergraduate Student Theses
Nutrient pollution is a growing issue around the world. The excess nutrients going into aquatic ecosystems allows phytoplankton to thrive and form algal blooms. Algal blooms can be hazardous to humans, wildlife, and destroy aquatic ecosystems. They also are costly to monitor and control. This study uses remote sensing to observe the spectral differences in lakes, specifically one that experienced an algal bloom, Lake St. Clair. It was also compared to a lake with exceptional water quality, Lake Tahoe. The objective was to see how the two differed spectrally and determine if remote sensing is a viable option for monitoring …
The Role Of University Of Nebraska–Lincoln’S Biodigester On Sustainable Food Waste Reduction Within Selleck Dining Center, Jennifer Gilbert
The Role Of University Of Nebraska–Lincoln’S Biodigester On Sustainable Food Waste Reduction Within Selleck Dining Center, Jennifer Gilbert
Department of Environmental Studies: Undergraduate Student Theses
The University of Nebraska-Lincoln took a major step toward sustainability this past fall when Dining Services installed their first ever biodigester on November 8, 2019 within Selleck Dining Center. The impact this biodigester has had, thus far, is observable in the form of quantitative data collected in the amount of food waste digested by this technology. This study focuses on analyzing collected data from the LFC Cloud database, while also searching for trends and patterns that could further suggest substantial impact and efficiency of the biodigester on food waste reduction and sustainability initiatives within UNL Dining Services. Data Tables and …
Incorporating Tallgrass Prairie Into Urban Environments, Daniel Hauschild
Incorporating Tallgrass Prairie Into Urban Environments, Daniel Hauschild
Department of Environmental Studies: Undergraduate Student Theses
As an agricultural state with a population poised to shift to primarily urban based, Nebraska is in the unique position of being able to decide how people live in modern cities. While the benefits of including green spaces in urban areas are well documented, evidence also suggests that increased biodiversity in these areas compounds those benefits. As such, incorporating elements of functioning natural ecosystems within urban areas can potentially create pockets of sustainable landscapes. Nebraska’s two largest population centers are located on land that was historically tallgrass prairie, an iconic landscape in American history and now almost entirely absent from …
Ecological Perspectives Of The Eastern Saline Wetlands Differ Between Visitors And Non-Visitors, Peter Janda
Ecological Perspectives Of The Eastern Saline Wetlands Differ Between Visitors And Non-Visitors, Peter Janda
Department of Environmental Studies: Undergraduate Student Theses
The Eastern Saline Wetlands of Nebraska can be found in both Lancaster and Saunders counties in Eastern Nebraska. Due to the wetlands’ important services in the areas of recreation, wildlife habitat, and flood control, it is necessary to know the extent to which these services are valued and used by residents of Lincoln . Past research completed in 2015 by the Lower Platte South NRD observed public opinions toward wetland restoration and preservation, finding that 46% of the public strongly support it, 35% mildly support it and 16% do not support it (Saline Wetlands Conservation Partnership, 2006). This past study …
Fungal Mycelium: The Key To A Sustainable Future, Sawyer Krivanek
Fungal Mycelium: The Key To A Sustainable Future, Sawyer Krivanek
Department of Environmental Studies: Undergraduate Student Theses
This study focuses on fungal mycelium-based packaging as a biodegradable replacement of polystyrene packaging. In this thesis project, there will be a thorough study of the characteristics of fungal mycelium and how it can be combined with other products to create biodegradable packaging. Polystyrene packaging is unsustainable and poses threats to human health and our natural environments. It is pivotal that alternative packaging options for polystyrene are researched and tested to prove reliability as packaging systems develop. Research questions answered in this thesis include: Can fungal mycelium be a biodegradable replacement for plastic/polystyrene packaging at a large scale? What is …
Effect Of Urban Green Space On Urban Populations., Jack Mensinger
Effect Of Urban Green Space On Urban Populations., Jack Mensinger
Department of Environmental Studies: Undergraduate Student Theses
As the world's population continues to urbanize, population density increases and people endure the ever-increasing speed of the urban environment. The need to focus on mental and physical health becomes ever more critical as daily routines may not fulfill urban residents' basic needs. The bulk of work studying the relationship between green space, mental, and physical wellness, have had a narrow scope in their assessment of the benefits of green space. Previous studies focused either on the human interaction or the spaces utilities as a corridor and a habitat for flora and fauna. We utilized a systematic literature review to …
Diet Composition And Analysis Of Fish Species Consumed By The Eurasian Otter In A Marine/Costal Environment, Alexandrea Otto
Diet Composition And Analysis Of Fish Species Consumed By The Eurasian Otter In A Marine/Costal Environment, Alexandrea Otto
Department of Environmental Studies: Undergraduate Student Theses
Understanding prey preference in Eurasian otters, Lutra lutra, is important to provide greater insight into aquatic predator-prey relationships which will inform conservation efforts. Identifying the composition of an organism’s diet is one of the primary steps in understanding an organism and developing effective conservation strategies. This study expands upon basic identification of consumed items to estimate size of fish eaten by Eurasian otters to provide information on the diet of these important aquatic predators. Many studies on the Eurasian otter have considered diet from river systems, yet less is known of their diet in marine systems. The goal of my …
The Effect Of Pictorial Signs On Recycling Rates, Christopher A. Sukstorf
The Effect Of Pictorial Signs On Recycling Rates, Christopher A. Sukstorf
Department of Environmental Studies: Undergraduate Student Theses
Recycling is a core way that college students can act altruistically. Many studies have been conducted to study how to increase the participation of recycling on college campuses, office buildings, and the like. This study focuses on the University Lutheran Chapel, a Christian church adjacent to the University of Nebraska – Lincoln. While the University of Nebraska – Lincoln has drastically improved recycling participation in recent years, the University Lutheran Chapel lags behind. Pictorial signs were used in an experiment to determine whether they improved recycling rates at The Chapel. Recycling rates at the University Lutheran Chapel were measured by …
The Effects Of Street Tree Site Planting Width On Canopy Width And Ability To Provide Ecosystem Services, Ryan Kendall
The Effects Of Street Tree Site Planting Width On Canopy Width And Ability To Provide Ecosystem Services, Ryan Kendall
Department of Environmental Studies: Undergraduate Student Theses
In a time where pests such as emerald ash borer are reducing urban forests, it is important to gain a return on investment for new trees planted. Since trees cost money, the value of the ecosystem services that they provide over the course of their lives should outweigh their costs. Due to the need for a return on investment, it is important to know whether newly planted street trees are being planted in a space that does not inhibit their growth or ability to provide benefits. This study, in Lincoln, NE looks to determine the relationship between a street tree’s …
What Are The Impacts Of Plastic Pollution On Sea Turtles And How Can We Prevent Them?, Stacey Safarik
What Are The Impacts Of Plastic Pollution On Sea Turtles And How Can We Prevent Them?, Stacey Safarik
Department of Environmental Studies: Undergraduate Student Theses
This paper will address the impacts of plastic pollution on sea turtles and how humans can combat the issue. Sea turtles are often harmed due to human activities because the ocean is used as a dumping ground for trash, and humans need to take it upon themselves to change this. The purpose of this project was to learn how plastic can impact the lives of sea turtles, and to find out if there are prevention efforts in place. A thematic literature review was conducted in order to find all of the data. Once all of the data was compiled, it …
Planning Urban Forests In A Changing Climate, Ethan Dudden
Planning Urban Forests In A Changing Climate, Ethan Dudden
Department of Environmental Studies: Undergraduate Student Theses
As the effects of negative effects of climate change are realized, urban forests a means to reduce the potential damage and adverse conditions in urban areas (Wolf, et al., 2020) (Livesley, McPherson, & Calfapietra, 2016) (Xiao & McPherson, 2002). Preserving these resources is becoming more difficult however, as the trees that make up urban landscapes become less adapted to current conditions with every passing year (Aitken, Yeaman, Holliday, Wang, & Sierra, 2008). Changes in climate and world systems also point to invasive pests becoming greater threats to urban forest resources with time (Tubby & Webber, 2010) (Amberger et al., 2017). …
Future Implications Of Extreme Heat On Public Health For Those Living In Lincoln, Nebraska, Mandy Koehler
Future Implications Of Extreme Heat On Public Health For Those Living In Lincoln, Nebraska, Mandy Koehler
Department of Environmental Studies: Undergraduate Student Theses
Increasing temperatures are expected as the climate crisis progresses. This crisis is fueled by the increasing amount of greenhouse gas emissions being released into the atmosphere, which trap heat in the environment. With rising temperatures, more extreme heat events threaten multiple sectors of society including public health. To gain insight into future climate issues related to warming temperatures and public health for people living in Lincoln, Nebraska, this research will evaluate the predicted extent of extreme heat for this area and consider what other relevant regions do to deal with these problems. This study identifies the scope of future extreme …
Lincoln, Ne Composting In Restaurants, Brodie Baum
Lincoln, Ne Composting In Restaurants, Brodie Baum
Department of Environmental Studies: Undergraduate Student Theses
This study aimed to investigate restaurants across the city of Lincoln, Nebraska that compost as a way to reduce food waste. Food waste is a growing environmental concern because it leads to climate change, eutrophication and acidification of bodies of water, pollutes the air and more. This study utilized a software program to distribute a survey that restaurants owners/personnel would take. The survey asked a variety of questions that provided information about the restaurants and who runs it. This information allowed us to draw important conclusions. Based on the results of the survey we can begin to speculate about possible …
Microdialysis: A Method For Quantifying In Situ Nitrogen Fluxes In Soil Microsites, Srusti Maddala, Mary C. Savin, Julie A. Stenken, Lisa S. Wood
Microdialysis: A Method For Quantifying In Situ Nitrogen Fluxes In Soil Microsites, Srusti Maddala, Mary C. Savin, Julie A. Stenken, Lisa S. Wood
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
Microdialysis, a diffusion-based sampling technique commonly used in biomedical research, has recently been recognized as a candidate for monitoring chemical changes in the rhizosphere. The information it provides about nutrient diffusion may improve nitrogen use efficiency, leading to enhanced management and success of restoration projects. The objective of this study was to determine the efficacy of microdialysis sampling to quantify the relative recoveries (RR%) of nitrate-N and ammonium-N, the two inorganic nitrogen compounds typically found in soil. The effects of microdialysis flow rate, sample medium concentration, and the presence of both analytes in solution on the relative recoveries obtained from …