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Potential Contamination Risk In Tennessee Aquifers From Oil And Gas Drilling, Emma Reed 2019 University of Tennessee

Potential Contamination Risk In Tennessee Aquifers From Oil And Gas Drilling, Emma Reed

University of Tennessee Honors Thesis Projects

No abstract provided.


The Contribution Of Local And Transport Processes To Phytoplankton Biomass Variability Over Different Timescales In The Upper James River, Virginia, Qubin Qin, Jian Shen 2018 Virginia Institute of Marine Science

The Contribution Of Local And Transport Processes To Phytoplankton Biomass Variability Over Different Timescales In The Upper James River, Virginia, Qubin Qin, Jian Shen

Articles

Although both local processes (photosynthesis, respiration, grazing, and settling), and transport processes (advective transport and diffusive transport) significantly affect local phytoplankton dynamics, it is difficult to separate their contributions and to investigate the relative importance of each process to the local variability of phytoplankton biomass over different timescales. A method of using the transport rate is introduced to quantify the contribution of transport processes. By combining the time-varying transport rate and high-frequency observed chlorophyll a data, we can explicitly examine the impact of local and transport processes on phytoplankton biomass over a range of timescales from hourly to annually. For ...


Exploring Multiple Operating Scenarios To Identify Low-Cost, High Nitrate Removal Strategies For Electrically-Stimulated Woodchip Bioreactors, Ji-Yeow Law, Michelle L. Soupir, D. Raj Raman, Thomas Moorman 2018 Iowa State University

Exploring Multiple Operating Scenarios To Identify Low-Cost, High Nitrate Removal Strategies For Electrically-Stimulated Woodchip Bioreactors, Ji-Yeow Law, Michelle L. Soupir, D. Raj Raman, Thomas Moorman

Agricultural and Biosystems Engineering Publications

Woodchip bioreactors are recognized as an effective best management practice in the Iowa Nutrient Reduction Strategy. This edge-of-field practice intercepts and removes NO3-N, thereby reducing the NO3-N concentration in tile drainage before being discharged into surface water. Actual NO3-N load reductions realized by woodchip bioreactors are impacted by bioreactor size, hydraulic retention time (HRT), and denitrification efficiency. A typical woodchip bioreactor in Iowa may have 0.07% bioreactor area with respect to treatment area, 4–8 h HRT, and 43% mean denitrification efficiency. Here, we explored the potential of using electrically stimulated woodchip bioreactors to achieve greater NO3-N removal, and ...


Evaluation Of Blight Resistance In Chestnut F2 Half-Sibling And Full-Sibling Families Via Small Stem Assay, Kevin Gentner 2018 University of Tennessee at Chattanooga

Evaluation Of Blight Resistance In Chestnut F2 Half-Sibling And Full-Sibling Families Via Small Stem Assay, Kevin Gentner

Honors Theses

In 1904, Cryphonectria parasitica, the causal agent for chestnut blight, was imported into North America on chestnut nursery stock from China. Fifty-five years later, nearly all full-grown wild American chestnut trees (Castanea dentata) were dead. A century of work has been put into restoring the American chestnut to its rightful place among the forest canopy. Since the 1980s, The American Chestnut Foundation has pursued backcross breeding to introgress blight resistance into C. dentata from the resistant Chinese species (C. mollissima), and has used progeny testing to make predictions about parental resistance in B3F2 chestnuts. We performed a small stem assay ...


Why Do They Do That? Understanding Factors Influencing Visitor Spatial Behavior In Parks And Protected Areas, Abigail M. Sisneros-Kidd 2018 Utah State University

Why Do They Do That? Understanding Factors Influencing Visitor Spatial Behavior In Parks And Protected Areas, Abigail M. Sisneros-Kidd

All Graduate Theses and Dissertations

Visitors to parks and protected areas within the United States and worldwide often visit these areas with a particular destination in mind, such as seeing Old Faithful erupt in Yellowstone National Park or standing on the rim of the Grand Canyon in Grand Canyon National Park. These visitor use destinations, and the pathways leading to them, such as trails and roadways, see high levels of use, and as a result, impacts to soil, vegetation, air, water, soundscapes, and night skies that result from this use. The field of recreation ecology studies these impacts to park and protected area resources resulting ...


Humans As Sensors: The Influence Of Extreme Heat Vulnerability Factors On Risk Perceptions Across The Contiguous United States, Forrest Scott Schoessow 2018 Utah State University

Humans As Sensors: The Influence Of Extreme Heat Vulnerability Factors On Risk Perceptions Across The Contiguous United States, Forrest Scott Schoessow

All Graduate Theses and Dissertations

Extreme heat events are the deadliest natural hazard in the United States and will continue to get worse in the coming years due to the effects of climate change. As a result, more people will experience deadly heat conditions. This highlights the need for decision-makers to develop better strategies for preventing future losses. How badly individuals are affected by extreme heat depends on many circumstances, such as how high temperatures actually are, weather conditions, and location. For example, a dry 90 °F day in Phoenix is probably more tolerable than a humid 90 °F day in New Orleans for most ...


The Perception Of Utah Division Of Wildlife Resource’S Law Enforcement By Local, County And Municipal Law Enforcement Agencies, Wyatt Bubak 2018 Utah State University

The Perception Of Utah Division Of Wildlife Resource’S Law Enforcement By Local, County And Municipal Law Enforcement Agencies, Wyatt Bubak

All Graduate Plan B and other Reports

Like most states throughout the nation, Utah’s population has continually grown since settlement. In 2014 Utah’s population was estimated at 2.95 million and between 2015-2016 Utah had the highest percentage growth rate of any state in the nation. This profound amount of growth can be attributed to many factors that are unique to Utah; two of which are the aesthetic and recreational opportunities available to Utah residents.

Due to population growth and urban sprawl, areas commonly patrolled by Utah Division of Wildlife Resources (UDWR) conservation officers are now located closer to urban populations. Previously rural or backcountry ...


A Framework For Assessing Natural Lands And Finding Common Ground In The Bear River Range, Scott McComb 2018 Utah State University

A Framework For Assessing Natural Lands And Finding Common Ground In The Bear River Range, Scott Mccomb

All Graduate Plan B and other Reports

Forests, wetlands, grasslands, lakes and deserts make up the natural lands that humans and nature rely on. In the Bear River Range, these lands are becoming smaller and more disconnected due to residential and commercial development, agriculture, energy production and transportation corridors. In addition, natural lands are owned and managed by a variety of groups representing different values, priorities and traditions. For large-scale conservation to be successful, it needs to incorporate multiple priorities. The purpose of this study was to provide a process for identifying the remaining network of natural lands within the Bear River Range that indicate high ecological ...


Forewarned Is Forearmed: Review Of Curbing Catastrophe: Natural Hazards And Risk Reduction In The Modern World By Timothy H. Dixon (2017), Jason Makansi 2018 Pearl Street Inc

Forewarned Is Forearmed: Review Of Curbing Catastrophe: Natural Hazards And Risk Reduction In The Modern World By Timothy H. Dixon (2017), Jason Makansi

Numeracy

Timothy H. Dixon. 2017. Curbing Catastrophe: Natural Hazards and Risk Reduction in the Modern World. (New York, NY: Cambridge University Press) 300 pp. ISBN 978-1108113663.

Curbing Catastrophe for the most part lives up to what is claimed in the foreword: “…a compelling account of recent and historical disasters, both natural and human-caused, drawing on common themes and providing a holistic understanding of hazards, disasters, and mitigation for anyone interested in this important and topical subject.” This is a pretty thorough treatment of an extraordinarily complex subject, and the gaps identified in this review should be considered explications more than criticisms.


Review Of Curbing Catastrophe: Natural Hazards And Risk Reduction In The Modern World, Kira H. Hamman 2018 Pennsylvania State University, Mont Alto

Review Of Curbing Catastrophe: Natural Hazards And Risk Reduction In The Modern World, Kira H. Hamman

Numeracy

Timothy H. Dixon. 2017. Curbing Catastrophe: Natural Hazards and Risk Reduction in the Modern World. (New York, NY: Cambridge University Press) 300 pp. ISBN 978-1108113663.

In Curbing Catastrophe, Timothy H. Dixon explores commonalities among natural disasters like Hurricane Katrina, the 2010 earthquake in Haiti, and the meltdown at Fukushima. He identifies communication failure between scientists and policy makers as a major culprit in the devastation that results from such events and offers strategies for improving that communication. He includes optional in-depth scientific and quantitative examinations of the events and the resulting devastation, making the book appropriate for use in teaching ...


Perils Of The Fungal Kingdom: Mycotoxins In Food And Feed, Adrianna Isobel Pribil 2018 Louisiana State University

Perils Of The Fungal Kingdom: Mycotoxins In Food And Feed, Adrianna Isobel Pribil

LSU Master's Theses

Humans and fungi have a complex relationship, especially in regards to the many fungal secondary metabolites that can be produced. When secondary metabolites are toxic to animals and humans they are defined as mycotoxins. Fungi can grow on crops pre-harvest and post-harvest, and have the potential to produce mycotoxins which occur regularly in animal feed and food for human consumption. In high doses, mycotoxins cause variety of problems that result in economic losses and extreme health issues. However, multiple mycotoxins will co-occur in nature and commonly occur in low doses. Thus chronic low daily doses of multiple mycotoxins overtime may ...


Exploring The Amphibian Exposome In An Agricultural Landscape Using Telemetry And Passive Sampling, Jennifer E. Swanson, Erin Muths, Clay L. Pierce, Stephen J. Dinsmore, Mark W. Vandever, Michelle L. Hladik, Kelly L. Smalling 2018 Iowa State University

Exploring The Amphibian Exposome In An Agricultural Landscape Using Telemetry And Passive Sampling, Jennifer E. Swanson, Erin Muths, Clay L. Pierce, Stephen J. Dinsmore, Mark W. Vandever, Michelle L. Hladik, Kelly L. Smalling

Natural Resource Ecology and Management Publications

This is the first field study of its kind to combine radio telemetry, passive samplers, and pesticide accumulation in tissues to characterize the amphibian exposome as it relates to pesticides. Understanding how habitat drives exposure in individuals (i.e., their exposome), and how that relates to individual health is critical to managing species in an agricultural landscape where pesticide exposure is likely. We followed 72 northern leopard frogs (Lithobates pipiens) in two agricultural wetlands for insight into where and when individuals are at high risk of pesticide exposure. Novel passive sampling devices (PSDs) were deployed at sites where telemetered frogs ...


Vegetation Land Cover/Use Dynamics And Their Effects In Mbulu And Karatu Districts In The North-Eastern Highlands Of Tanzania, Leonia John Raphael 2018 University of Dar es Salaam

Vegetation Land Cover/Use Dynamics And Their Effects In Mbulu And Karatu Districts In The North-Eastern Highlands Of Tanzania, Leonia John Raphael

International Journal of Geospatial and Environmental Research

Vegetation Land Cover/Land Use dynamics (VLC/LU) are the result of complex and compound interactions between the human (cultural, socioeconomic, and political) and the physical environment at different spatial scales. The present study assesses the spatial distribution of VLC/LU dynamics from 1987 to 2015 in the North-Eastern highlands of Tanzania using both qualitative (in-depth interviews and focus group discussions) and quantitative techniques (spatio-temporal analysis through GIS). The qualitative approach was used to elicit information on the main drivers of VLC/LU changes by land users as transitions occurred with time. The spatio-temporal analysis was used to assess the ...


Analysis Of Oncorhynchus Mykiss Tissue To Determine Lead Ion Concentration, Ciaran Edwards, Bailey Hoplight, Justin Pavan 2018 Lewiston-Porter High School

Analysis Of Oncorhynchus Mykiss Tissue To Determine Lead Ion Concentration, Ciaran Edwards, Bailey Hoplight, Justin Pavan

The International Student Science Fair 2018

The variation in potential lead ion (Pb +2) concentration in various tissue samples of Oncorhynchus Mykiss (steelhead) trout caught in the Niagara River was investigated. This was used to develop a kinetic model of trace element bioaccumulation of lead in various tissues. By employing experimentally determined trace element influx and efflux from environmental food and water exposures, lead ion concentrations were determined using atomic absorption spectroscopy on homogenized fillet, liver, and gonad tissues collected from steelhead trout caught in the Niagara River. Lead ion concentrations were also determined from water samples collected at a GPS noted catch site. All sample ...


Optimising A Plant (Red Flame Ivy) Microbial Fuel Cell, Ashley Chng 2018 National Junior College

Optimising A Plant (Red Flame Ivy) Microbial Fuel Cell, Ashley Chng

The International Student Science Fair 2018

This project is targeted at bettering the quality of life of people in the rural areas who do not have easy access to electricity by creating a sustainable Plant Microbial Fuel Cell (PMFC). The concept of a PMFC is fairy new and holds a lot of potential to be explored. By referencing previous research papers, optimum operating conditions were selected, including the concentration of chemicals used and the temperature the setup was placed such that all elements of a MFC were present, with room for a plant. In order to produce a self-sustainable PMFC, the plant had to be able ...


De-Icers: What Is Safe For The Environment And Is Effective?, Dylan Walker 2018 Fort Richmond Collegiate

De-Icers: What Is Safe For The Environment And Is Effective?, Dylan Walker

The International Student Science Fair 2018

De-icers are a common chemical product that cities and homeowners across the world use to melt ice on the roads and around their home. The purpose of this experiment was to determine the effect of various de-icers on grass health and compare it to the efficiency from which these de-icers actually melt ice. This was done through placing pots of soil into separate containers each filled with a little bit of a different de-icer solution to test its effect on grass by measuring the percentage of green grass is left in each pot. The efficiency was tested by filling different ...


A Wave From Einstein, 2018 DePaul University

A Wave From Einstein

DePaul Magazine

The discovery in 2015 of gravitational waves 100 years after Albert Einstein predicted their existence gave scientists a new way of understanding the universe. This discovery, made possible by decades of work and the collaborative efforts of astrophysicists around the world offers a window into how science advances. The concept of science as a way of knowing is discussed.


The Missing Benefits Of Clean Water And The Role Of Mismeasured Pollution, David A. Keiser 2018 Iowa State University

The Missing Benefits Of Clean Water And The Role Of Mismeasured Pollution, David A. Keiser

Economics Working Papers

Although the U.S. spends billions of dollars a year controlling water pollution, there is little empirical evidence of comparable benefits. This study argues that measurement error in pollution data causes benefits to be underestimated. Using upstream concentrations as instrumental variables for local concentrations, the study finds substantial benefits from reducing nutrient pollution. Instrumental variable estimates of the effects of phosphorus on recreational use are an order of magnitude larger than conventional estimates. The study uses a long-term pollution dataset from Iowa to show that this difference is consistent with estimates of measurement error in several U.S. water pollution ...


De-Icers: What Is Safe For The Environment And Is Effective?, Dylan Walker 2018 Fort Richmond Collegiate

De-Icers: What Is Safe For The Environment And Is Effective?, Dylan Walker

The International Student Science Fair 2018

The purpose of this experiment was to determine the affect that various de-icers (both organic and inorganic based) had on the health of grass, as well as determine the efficiency of the de-icer in melting ice to then compare and contrast the data to find the best overall de-icer in terms of effectiveness and environmental impact.


An Investigation Of The Tissue Distribution Of Lead In Steelhead Trout, Ciaran Edwards, Bailey Hoplight, Justin Pavan 2018 Lewiston-Porter High School

An Investigation Of The Tissue Distribution Of Lead In Steelhead Trout, Ciaran Edwards, Bailey Hoplight, Justin Pavan

The International Student Science Fair 2018

Lead is a metal that interferes with a variety of body processes and is toxic to many organs in humans and other animals. There is a legacy of lead pollution in the waterways of Western New York (WNY). Fish consumption advisories in WNY are partially based on the danger of lead contamination. However, it is not always clear if tissues of the fish that are commonly consumed are as highly contaminated as less commonly consumed tissues. In collaboration with a research team from D’Youville College, we investigated the lead concentration in different tissues of nine steelhead trout caught in ...


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