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Factors Influencing Fish Mercury Concentrations In Iowa Rivers, Nathan Mills, Michael J. Weber, Clay L. Pierce, Darcy Cashatt 2019 Iowa State University

Factors Influencing Fish Mercury Concentrations In Iowa Rivers, Nathan Mills, Michael J. Weber, Clay L. Pierce, Darcy Cashatt

Natural Resource Ecology and Management Publications

Fish mercury concentrations have received considerable attention due to human health implications. Fish mercury concentrations are variable within and among systems due to a suite of biotic and abiotic influences that vary among regions and are difficult to predict. Understanding factors associated with variability in fish mercury concentrations would help guide consumption advisories. Mercury concentrations in channel catfish (Ictalurus punctatus, n = 205), flathead catfish (Pylodictis olivaris, n = 123), northern pike (Esox lucius, n = 60), smallmouth bass (Micropterus dolomieu, n = 176), and walleye (Sander vitreus, n = 176) were assessed in ten Iowa rivers and relationships with land use, water chemistry, and ...


Coral Reef Restoration Using Mass Coral Larval Enhancement, Dexter W. dela Cruz 2019 Southern Cross University

Coral Reef Restoration Using Mass Coral Larval Enhancement, Dexter W. Dela Cruz

Theses

Coral reef communities are rapidly declining worldwide due to increasing direct anthropogenic disturbances, including global climate change. Active management approaches are needed for effectively slowing and reversing coral loss on degraded reef systems to promote recovery. Research presented in this thesis includes fertilization experiments to optimize embryo and larval culture and testing three tiles types to determine suitable larval recruitment surfaces. Two successful coral restoration experiments, using many thousands of ex situ cultured larvae of two Acropora species, resulted in increased coral settlement and recruitment and re-establishing breeding corals on degraded reef sites in the northern Philippines.

Spawned eggs and ...


Geostatistical And Hydrochemical Trends In The Upper Passaic River Basin : Impact Of Road Deicing Application, Connor Evan Firor 2019 Montclair State University

Geostatistical And Hydrochemical Trends In The Upper Passaic River Basin : Impact Of Road Deicing Application, Connor Evan Firor

Theses, Dissertations and Culminating Projects

Sodium chloride deicing salts have been used to remove snow and ice from roadways in the Northern United States since the early 1900s. Road deicing reduces accident rates, road delays, and improve road accessibility. While it is known that the use of road deicers is beneficial, road salts have also been shown to affect surface water and groundwater quality. This study conducted major ion concentration analyses on groundwater samples collected by the United States Geological Survey (USGS) for the Upper Passaic River Basin (UPRB). Results show that the contribution of chloride to total dissolved solids increased significantly by 2010. Trend ...


The Impact Of Deicing Materials On The Middle And Lower Passaic River Basins, New Jersey : A Geostatistical And Hydrochemical Analysis, Peter Joseph Soriano 2019 Montclair State University

The Impact Of Deicing Materials On The Middle And Lower Passaic River Basins, New Jersey : A Geostatistical And Hydrochemical Analysis, Peter Joseph Soriano

Theses, Dissertations and Culminating Projects

Regression analyses of major ion concentration, and specific conductance were compared on a decadal basis from field data of the 1960s, 1980s, 1990s, 2000s, and 2010s to find if there is a statistically significant increase in calcium, chloride, and sodium compared to other major groundwater ions in the Middle and Lower Passaic River Basins. Time series graphical analyses, bivariate coefficient relationships, statistical prediction interval evaluations, and multivariate analyses were used to determine the significance of the individual ion concentration trends. Through ArcGIS, bedrock geochemistry was examined in correlation with well locations, ion concentrations, and road placements. GIS was used to ...


Shizen Nōhō: Restoring The Relationship Between Food, Nature, And People In Japan, Katharine Graham 2019 Claremont Colleges

Shizen Nōhō: Restoring The Relationship Between Food, Nature, And People In Japan, Katharine Graham

Scripps Senior Theses

In Japan’s postwar era, agriculture has become highly industrialized, involving heavy machinery, chemical fertilizers, and pesticides, all in the name of “progress.” Through employing such practices, humans have attempted to improve upon nature’s way of doing things, and in turn have degraded the soil’s fertility, natural ecosystems, and human health. In response to this, Shizen Nōhō has emerged in Japan as an alternative way of cultivating food. Shizen Nōhō practitioners challenge the notion that we need chemical fertilizers, pesticides, and machinery to farm successfully. Rather, they advocate for a way of growing food that functions seamlessly with ...


Environmental Policy Assessment In The Ghanaian Gold Mining Industry: Insights From Stakeholders, Francis Tuokuu 2019 Antioch University

Environmental Policy Assessment In The Ghanaian Gold Mining Industry: Insights From Stakeholders, Francis Tuokuu

Dissertations & Theses

Environmental policy assessment has been recognized by critical stakeholders (e.g., governments, local communities, academics, environmental advocacy groups, and mining companies) as an effective way of identifying and dealing with the myriad of environmental problems confronting humanity, particularly those caused by mining activities. While the gold mining sector has contributed to the economies of countries in Sub-Saharan Africa since the introduction of structural adjustment programs (SAPs) in the 1980s by the Bretton Woods institutions (the World Bank and the International Monetary Fund; IMF), the sector has also contributed to environmental degradation including water pollution, land contaminations, and generally, human health ...


Temporal And Spatial Variability Of Carbonate Chemistry In A Tillamook Bay Tributary: Tracing Acidification From The River To The Bay, Abigail Ernest-Beck 2019 Western Washington University

Temporal And Spatial Variability Of Carbonate Chemistry In A Tillamook Bay Tributary: Tracing Acidification From The River To The Bay, Abigail Ernest-Beck

WWU Honors Program Senior Projects

Coastal acidification from rising atmospheric carbon dioxide can be exacerbated by local factors such as land inputs of inorganic carbon and nutrients. In Tillamook Bay, OR, the possibility of local factors enhancing acidification and impacting oyster aquaculture in the bay is a concern due to extensive agriculture in the watershed. The US EPA has been monitoring water conditions in Tillamook Bay tributaries since the summer of 2016, and preliminary findings showed increased dissolved inorganic carbon (DIC) downstream of agricultural areas. To determine the causes of elevated DIC, changes attributed to land-based inputs must be distinguished from natural temporal variability and ...


A Multivariate Analysis Of The Relationship Between The Water Quality Conditions And Algal Species Composition Of Six Mountain Lakes In The North Cascades, Wa, Usa, Michael P. Lawlor 2019 Western Washington University

A Multivariate Analysis Of The Relationship Between The Water Quality Conditions And Algal Species Composition Of Six Mountain Lakes In The North Cascades, Wa, Usa, Michael P. Lawlor

WWU Graduate School Collection

The objective of my study was to characterize the water quality conditions and algal species composition of six mountain lakes in the North Cascades of Washington, USA. Exploratory data analysis examined water quality conditions and algal species composition separately, then determined if they were related. The lakes exhibited median temperatures from 13.3 °C to 20.8 °C, had nitrate and soluble reactive phosphate concentrations below 100 µg/L and 6 µg/L, respectively, were slightly acidic (pH 5.1-6.9), and had median dissolved oxygen concentrations ranging from 6.7 mg/L to 10.6 mg/L. Over 340 ...


Everyone Can Grow! Winter Programming Using An Indoor Horticulture Environmental Education Program To Benefit Military Veterans, Rachel Elam 2019 Western Washington University

Everyone Can Grow! Winter Programming Using An Indoor Horticulture Environmental Education Program To Benefit Military Veterans, Rachel Elam

WWU Graduate School Collection

Working with plants has numerous physical, mental health and well-being benefits for people, and military veteran farming programs have been started to provide these benefits. However, these programs lack activities outside of the Washington State growing season which is approximately May to October. Since these programs are largely meant as ways for veterans to engage in community and peer support, the gap over winter is unacceptable for the purposes of supporting mental health. This project produced a winter environmental education curriculum for military vets, titled Everyone can Grow! (ECG!), and is designed to provide peer support and psychological benefit from ...


Population Viability And Connectivity Of The Federally Threatened Eastern Indigo Snake In Central Peninsular Florida, Javan Bauder 2019 University of Massachusetts Amherst

Population Viability And Connectivity Of The Federally Threatened Eastern Indigo Snake In Central Peninsular Florida, Javan Bauder

Doctoral Dissertations

Understanding the factors influencing the likelihood of persistence of real-world populations requires both an accurate understanding of the traits and behaviors of individuals within those populations (e.g., movement, habitat selection, survival, fecundity, dispersal) but also an understanding of how those traits and behaviors are influenced by landscape features. The federally threatened eastern indigo snake (EIS, Drymarchon couperi) has declined throughout its range primarily due to anthropogenically-induced habitat loss and fragmentation making spatially-explicit assessments of population viability and connectivity essential for understanding its current status and directing future conservation efforts.

The primary goal of my dissertation was to understand how ...


Large-Scale Performance Testing Of Temporary Sediment Basin Treatments And High-Rate Lamella Settlers, Michael A. Perez, Wesley C. Zech, Jose C. Vasconcelos, Xing Fang 2019 Iowa State University

Large-Scale Performance Testing Of Temporary Sediment Basin Treatments And High-Rate Lamella Settlers, Michael A. Perez, Wesley C. Zech, Jose C. Vasconcelos, Xing Fang

Civil, Construction and Environmental Engineering Publications

Sediment basins are temporary practices commonly used to detain stormwater runoff and capture suspended sediment on construction sites. A 79.0 m3 (2790 ft3) sediment basin testing apparatus at the Auburn University—Erosion and Sediment Control Testing Facility was used to provide a series of controlled and repeatable, large-scale tests to understand the performance of sediment basins and provide improvements. This research evaluated five sediment basin configurations over the course of 27 individual tests, including: (1) a standard configuration, (2) the addition of an excavated sump upstream of a ditch check, (3) the modification of the first baffle, (4) a ...


Call For Abstracts - Resrb 2019, July 8-9, Wrocław, Poland, Wojciech M. Budzianowski 2018 Wojciech Budzianowski Consulting Services

Call For Abstracts - Resrb 2019, July 8-9, Wrocław, Poland, Wojciech M. Budzianowski

Wojciech Budzianowski

No abstract provided.


Stream Dynamics In The Headwaters Of Post-Glacial Watershed Systems, Brett Gerard 2018 University of Maine

Stream Dynamics In The Headwaters Of Post-Glacial Watershed Systems, Brett Gerard

Electronic Theses and Dissertations

This dissertation summarizes research examining watershed processes across Northern New England, with an emphasis on the Central and Coastal regions of Maine. The research presented here focuses on the linkages between watershed geomorphic conditions, climate, and surface flow regimes driving stream channel hydraulic conditions and bed dynamics governing channel geometry. The geologic and human history of the landscape provides the context in which earth surface processes are examined within the dominant physiographic settings in Maine to describe vulnerabilities to climate change. Results are summarized to support the development of sustainability solutions for forecasted watershed management problems by natural resource management ...


Lift On E15 Ban: Should Nebraskan Farmers Be Cheering?, Samantha Wattier 2018 University of Nebraska-Lincoln

Lift On E15 Ban: Should Nebraskan Farmers Be Cheering?, Samantha Wattier

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

The common gasoline-ethanol mixture available at gas station pumps is 10% ethanol (E10). The Environmental Protection Agency had a ban on 15% ethanol (E15) during summer months. The news has been covering the talks of President Trump to lifting this summer ban and supporters in Iowa are excited.

Should Nebraska shout Hoorah, too? It is common knowledge Nebraska is better than Iowa. We should be excited, too, right?! NO.

Iowa has been tracking Fuel Revenue sales including those from ethanol blends and has been pushing for the E15 ban lift. Considering Iowa produces MORE corn and MORE ethanol than Nebraska ...


Looking At The True Costs Of Environmental Degradation, Zachery Sehnert 2018 University of Nebraska-Lincoln

Looking At The True Costs Of Environmental Degradation, Zachery Sehnert

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

Progress is why we change, and innovation drives that progress. It is already very clear to scientists around the globe that our current framework for living is not sustainable. 97 percent of climate scientists are in consensus that there is a major threat to our ecosystem and action needs to be taken. Overpopulation, pollution, water scarcity, natural disasters, overfishing, deforestation are all issues that must be reevaluated with sustainability in mind. However only 49 percent of the general population share this belief, and even less, only 29 percent of CEOs are actively addressing climate change. The shortcoming for the general ...


“Renewable Energy Implementation”, William Newcomb 2018 University of Nebraska - Lincoln

“Renewable Energy Implementation”, William Newcomb

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

Finding and providing ways to produce energy in an environmentally clean way is becoming a major push for countries all around the world today. Renewable energy provides a clean way to produce energy efficiently without using our planets non-renewable resources. Renewable energy has been growing substantially in the United States in the last decade and is making its way towards becoming a major energy production method. So, what is stopping the United States from implementing renewable energy production into our country at a mass scale?

There are many barriers that are keeping renewable energy from becoming a main source of ...


Nebraska’S Public Power Is Proof That Renewables Are (Literally) In The Public’S Best Interest, Jacob Monti 2018 University of Nebraska - Lincoln

Nebraska’S Public Power Is Proof That Renewables Are (Literally) In The Public’S Best Interest, Jacob Monti

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

Nebraska is the only state that has every electric utility publicly owned. This gives Nebraska a unique advantage of serving its customers rather than out-of-state shareholders. Since the goal is cheap power instead of profit margins and keeping shareholders happy, Nebraska rates are 16.8% below the national average. (EIA.gov)

So what does that mean for Renewable sources of electricity if cheap power is the main focus? Does cheap but dirty coal reign supreme?

Some might think that’d be a death blow for Renewables. Renewables (wind, solar, and hydro-electric power) are expensive and not profitable, right? WRONG.

Renewables ...


Wave Energy In America, Chris Sukstorf 2018 University of Nebraska - Lincoln

Wave Energy In America, Chris Sukstorf

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

The United States has an untapped energy goldmine: our shores. According to the National Oceanic and Atmospheric Administration (NOAA), the United States his home to over 95,000 miles of shoreline. This shoreline is home to beaches, homes, and wildlife, but it could be home to more: wave energy.

Wave energy comes in many forms: some use the bobbing up and down motion of waves to generate energy in a similar motion of a piston; others store water during high tide and then release it during low tide like a dam. All said and done, the United States has the ...


Why Lincoln Needs To Get Ahead Of The Emerald Ash Borer Outbreak, Bryce Meyer 2018 University of Nebraska-Lincoln

Why Lincoln Needs To Get Ahead Of The Emerald Ash Borer Outbreak, Bryce Meyer

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

The emerald ash borer was recently sighted in Lincoln, Nebraska this August. This was to be expected as they were also located in Douglas and Cass county. The emerald ash borer has been making its way west from Michigan and has also been detected in 61 counties in Iowa.

The emerald ash borer is a metallic green colored beetle that feeds on green ash, black ash, blue ash, and white ash trees. The insect can kill up to 99% of the ash trees that they come in contact with. The beetle is native to north-eastern Asia and is considered an ...


“On-Bill Financing: A Bright Idea For Nebraska”, Lauren Taylor 2018 University of Nebraska-Lincoln

“On-Bill Financing: A Bright Idea For Nebraska”, Lauren Taylor

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

In over 29 states, a program called On-Bill Financing (OBF) is being utilized to improve the energy efficiency of homes and livelihoods of the people living in them. These programs have been implemented all over the country for many years, in states like Colorado, Hawaii, Iowa, and Michigan. According to the Environmental and Energy Study Institute (EESI), OBF has been wildly successful, reducing energy inefficiency, cutting energy bills, and improving the comfort of homes across the country with no upfront costs.

But what exactly is this mysterious money-saving program, and why hasn’t Nebraska tapped into it yet?

The Department ...


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