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Organic Matter Spatial And Temporal Patterns In Coastal Sands Of Long Bay, South Carolina, Kayla B. Christofferson 2021 Coastal Carolina University

Organic Matter Spatial And Temporal Patterns In Coastal Sands Of Long Bay, South Carolina, Kayla B. Christofferson

Honors Theses

Sandy coastlines serve crucial functions to coastal economies and coastal ecology alike. In the past, organic-poor sands were considered of lower importance than organic-rich muds. Recent studies showed that sands’ low organic matter concentrations are due to high biogeochemical cycling rates, driven by rapid physical exchange, but remain infrequently studied. I present time-series of sand mass-loss-on-ignition (LOI, an organic matter proxy) profiles from February 2017 onwards at multiple sites along Long Bay, South Carolina. LOI profiles exhibit subsurface maximum values, unlike the typical decrease with depth in muddy sediments. I hypothesize that organic matter distribution with depth is affected by ...


Epa Applications To Identify Headwater Watershed Changes And Best Management Practices In The San Bernardino National Forest, Sandra Ukaru 2021 California State University, San Bernardino

Epa Applications To Identify Headwater Watershed Changes And Best Management Practices In The San Bernardino National Forest, Sandra Ukaru

Electronic Theses, Projects, and Dissertations

The human-environmental landscape influences water quality across highly variable spatiotemporal scales. One such example is the human-environmental landscape in California, which has changed dramatically over the past several decades leading to a multitude of environmental issues including the reduction and impairment of water resources. This study compares surface water quality at four headwater streams in the San Bernardino National Forests using multiple assessment tools including in situ data, the Environmental Protection Agency (EPAs) Model My Watershed Tool and multiple databases within a GIS framework. These collective efforts enabled headwater watershed landscape changes and the extent of impacts to soil erosion ...


Three Centuries Of Vegetation Change In The William & Mary College Woods Reconstructed Using Phytoliths, Timothy Terlizzi 2021 William & Mary

Three Centuries Of Vegetation Change In The William & Mary College Woods Reconstructed Using Phytoliths, Timothy Terlizzi

Undergraduate Honors Theses

The College Woods, west of William & Mary’s campus, consists of ~900 acres of protected southern mixed hardwood forest. The woods surround Lake Matoaka, a former millpond established in ~1700. Despite the rich history of the area, little is known about how the dominant vegetative landcover has shifted over the last 300 years. This study set out to quantify the modern vegetation within the College Woods via the phytolith assemblages within the soil and identify shifts in the assemblages since the creation of Lake Matoaka and whether these changes are distinct from the vegetation that existed in the area before the lake. To accomplish this, I studied the composition and preservation of phytoliths – silica bodies generated within and between plant cells. The study focused on the two questions: do the modern phytolith assemblages in the soil of the College Woods reflect the vegetation present and can phytoliths within the sediments of Lake Matoaka be used to identify the dominant vegetative communities over the last ~300 years? I addressed these questions with three approaches: 1) Identify the primary phytolith producing taxa within the College Woods; 2) Identify the modern phytolith assemblages within the soil of the College Woods; 3) Identify the differences between phytolith assemblages from the lake sediment core samples. I found the following: 1) The production of phytoliths varies heavily between and within different common taxa of the College Woods, with species of oaks (Quercus spp.) unpredictably producing phytoliths and beeches (Fagus grandifolia) likely contributing the majority of dicot phytoliths; 2) The modern phytolith assemblages of the College Woods reflect a low phytolith producing environment, and the vegetative homogeneity is reflected in the phytolith record; 3) The ...


Formation Of Oil-Particle-Aggregates: Numerical Model Formulation And Calibration, Linlin Cui, Courtney K. Harris, Danielle R.N. Tarpley 2021 Virginia Institute of Marine Science

Formation Of Oil-Particle-Aggregates: Numerical Model Formulation And Calibration, Linlin Cui, Courtney K. Harris, Danielle R.N. Tarpley

VIMS Articles

When oil spills occur in turbid waters, the oil droplets and mineral grains can combine to form oil-particle aggregates (OPAs). The formation of OPAs impacts the vertical transport of both the oil and the mineral grains; especially increasing deposition of oil to the seabed. Though the coastal oceans can be very turbid, to date, few numerical ocean models have accounted for aggregation processes that form OPAs. However, interactions between oil and mineral aggregates may be represented using techniques developed to account for sediment aggregation. As part of Consortium for Simulation of Oil Microbial Interactions in the Ocean (CSOMIO), we modified ...


“Garden-Magic”: Conceptions Of Nature In Edith Wharton’S Fiction, Jonathan Malks 2021 William & Mary

“Garden-Magic”: Conceptions Of Nature In Edith Wharton’S Fiction, Jonathan Malks

Undergraduate Honors Theses

I situate Edith Wharton’s guiding idea of “garden-magic” at the center of my thesis because Wharton’s fiction shows how a garden space could naturalize otherwise inadmissible behaviors within upper-class society while helping a character tie such behavior to a greater possibility for escape. To this end, Wharton situates gardens as idealized touchstones within the built environment of New York City, spaces where characters believe they can reach self-actualization within a version of nature that is man-made. Actualization, in this sense, stems from a character’s imaginative escape that is enabled by a perception of the garden as a ...


Contentious Vulnerability: Infrastructure, Assemblages, And Environmental Justice Communities, Mads Emmett 2021 William & Mary

Contentious Vulnerability: Infrastructure, Assemblages, And Environmental Justice Communities, Mads Emmett

Undergraduate Honors Theses

Charles City County, Virginia has been the target of several large developmental proposals in recent years. Two of these proposed projects, the C4GT and Chickahominy natural gas power stations, have faced opposition from residents of Charles City County and people across the state who are concerned about the environmental impacts and health risks associated with fossil fuel infrastructure. These proposed power plants are part of an extensive assemblage of infrastructure: an uneven built network of physical and affective relationships brought together through contingencies which involves human and non-human parts and facilitates the distribution of resources and people around the world ...


Consumer Food Waste Behaviors In Relation To Open Date Label Misinterpretation, Daniel Hutchings, Elisabeth Seliga, Anya O'Meara, Anna Blank 2021 University of Southern Maine

Consumer Food Waste Behaviors In Relation To Open Date Label Misinterpretation, Daniel Hutchings, Elisabeth Seliga, Anya O'Meara, Anna Blank

Thinking Matters Symposium

In the United States, the legal framework for product date labeling is minimal and varies across states. Manufacturers have the discretion to use any date label that they deem appropriate, and this lack of uniformity leaves room for misinterpretation by both retailers and consumers. Previous studies have examined consumer misinterpretation of date labels and how this lack of knowledge correlates to food waste behaviors. This study was aimed at understanding how consumers apply their knowledge about date labels to make decisions about purchasing and discarding food. The research was conducted via an intercept survey outside of a grocery store to ...


Media Analysis Of Coverage Of Environmental Issues In The Midst Of A Pandemic, Alexandria N. Miller, Lucia A. Bolles 2021 University of Southern Maine

Media Analysis Of Coverage Of Environmental Issues In The Midst Of A Pandemic, Alexandria N. Miller, Lucia A. Bolles

Thinking Matters Symposium

This research aimed to answer the question “has the coronavirus impacted the print media’s coverage of important environmental issues?” The research analyzed 2 different print newspapers - The New York Times and the Wall Street Journal - to determine if there was a change in coverage of environmental news as the coronavirus spread in the US. Data for stories published in the first four days of every month from March through September was compiled for 2019 and 2020. Our findings showed a 78.85% decrease in coverage of environmental issues between 2019 and 2020 when stories related to the coronavirus pandemic ...


The Power Of Information: Information, Leak Notices, And Water Conservation In Edina, Mn, Federico Chung 2021 Macalester College

The Power Of Information: Information, Leak Notices, And Water Conservation In Edina, Mn, Federico Chung

Economics Honors Projects

This paper provides evidence on the effects of information provision on households’ water use. I use quarterly household consumption data from a utility in Minnesota to test the effect of a new residential water billing system on households’ water consumption. The updated billing format was possible as the utility transitioned to an automated meter reading (AMR) system. I also study impacts of another source of improved information provision from AMR adoption, faster high-water consumption notices. I find mixed evidence of the impact of personalized information on households’ water use. Households respond to high-consumption notices by significantly reducing consumption, even relative ...


Fish Disease Outreach Messages: Testing Of Gain And Loss Frames, Erin L. Pavloski, Heather A. Triezenberg 2021 Michigan State University

Fish Disease Outreach Messages: Testing Of Gain And Loss Frames, Erin L. Pavloski, Heather A. Triezenberg

Journal of Extension

Gain and loss framing has been used as a technique in risk communication to shape individuals’ behaviors in many fields. Our community-engaged research, conducted in partnership with the Michigan Department of Natural Resources (MDNR), experimentally tested five message frames to determine efficacy for outreach programs. We found: a) to increase risk perceptions of fish disease use a loss frame in a management context, b) to decrease risk perceptions of fish disease management use a gain frame in a disease context, and c) to motivate behavioral intentions for prevention and risk reduction use a gain frame in a disease context.


How Upstream Tributaries Affect Downstream Sediment Chemistry, Forrest Callahan 2021 Susquehanna University

How Upstream Tributaries Affect Downstream Sediment Chemistry, Forrest Callahan

Senior Scholars Day

Suspended sediment samples were collected at various locations along the North Branch of the Susquehanna River. Each sample was collected at the stream mouth where the flowing water enters the Susquehanna River. Each sample was filtered to analyze fine (clay-size) particles. The samples were analyzed using X-Ray Diffraction (XRD) and X-Ray Fluorescence (XRF). This research was an attempt to identify trends in sediment mineralogy and chemistry along the North Branch of the Susquehanna River. Each of the sediment samples contained minerals illite, quartz, and kaolinite. Samples collected from streams flowing over Devonian age bedrock contained one unidentified additional mineral. From ...


Examination Of Wastewater For Microplastics, Heather Sanchez 2021 Susquehanna University

Examination Of Wastewater For Microplastics, Heather Sanchez

Senior Scholars Day

No abstract provided.


Groundwater-Ephemeral Stream Interaction Before And After Storm Events, Jennifer Sabbak 2021 Susquehanna University

Groundwater-Ephemeral Stream Interaction Before And After Storm Events, Jennifer Sabbak

Senior Scholars Day

Almost 60 percent of stream miles in the continental United States only flow seasonally or after storms according to a study done by the EPA in 2013. Although these streams make up a vast majority of stream miles throughout the United States, seasonal and ephemeral stream channels are not often regularly monitored. This study will focus on analyzing the hydrology of an unnamed, underrepresented ephemeral stream within Snyder County, Pennsylvania. This stream runs through Susquehanna University’s CEER site and drains into Penn Creek. The objective of this study is to accurately represent the stream’s groundwater recharge rate by ...


Greenhouse Gas Inventory And Climate Action Plan For Monessen, Pennsylvania, Caitlyn Miller 2021 Susquehanna University

Greenhouse Gas Inventory And Climate Action Plan For Monessen, Pennsylvania, Caitlyn Miller

Senior Scholars Day

No abstract provided.


Pollution Gone Viral: The Effects Of The Covid-19 Lockdown On Microplastic Pollution In Our Waterways, Samantha Chillis 2021 Susquehanna University

Pollution Gone Viral: The Effects Of The Covid-19 Lockdown On Microplastic Pollution In Our Waterways, Samantha Chillis

Senior Scholars Day

No abstract provided.


041— Fiber Decomposition And Pretreatment Analysis Of Cannabis Sativa L.: Hemp, Dina Bu, Jessica Roggie, Sarah Schmidlin, Barnabas Gikonyo 2021 SUNY Geneseo

041— Fiber Decomposition And Pretreatment Analysis Of Cannabis Sativa L.: Hemp, Dina Bu, Jessica Roggie, Sarah Schmidlin, Barnabas Gikonyo

GREAT Day

Hemp is a subspecies of Cannabis sativa L. along with marijuana, yet the two differ in chemical constituent levels of delta-9-tetrahydrocannabinol (THC) and cannabidiol (CBD). Hemp contains 0.3% THC, compared to marijuana 17.1%, allowing it to be a safe and compelling biomass for investigation. The refined products of hemp are vast due to its fast-growing properties; therefore various commercial industries have included refined hemp in biofuels, biodegradable plastics, textiles, dietary supplements, paper, clothing, and much more. Construction and manufacturing applications have also been seen to include hemp to strengthen their composite products. The high-yielding, sustainable, and environmentally friendly ...


200— Chemical Analysis Of Slag From Standish, Ny, Maria Leonard, Dori Farthing 2021 SUNY Geneseo

200— Chemical Analysis Of Slag From Standish, Ny, Maria Leonard, Dori Farthing

GREAT Day

From 1883 to 1907, magnetite was smelted in Standish, NY. During this time, a large amount of slag, a byproduct of smelting, was created. The slag is now in a pile that covers ~13 acres in the northeastern region of the Adirondacks. The slag at the site has been classified into 6 broad types based on their physical properties. Exemplars of select types were crushed and analyzed by X-ray fluorescence spectroscopy (XRF). Both major elements and trace element data was collected for these samples. The XRF results indicate that all Standish slag is dominated by SiO2, CaO, and Fe2O3(t ...


219— Using Dendrochronology For Place-Based K-12 Paleoclimate Lessons, Grace Raffa 2021 SUNY Geneseo

219— Using Dendrochronology For Place-Based K-12 Paleoclimate Lessons, Grace Raffa

GREAT Day

Dendrochronology focuses on using trees as archives of past climatic changes for a given region. This project focuses on creating a paleoclimate-centered accessible learning experience for K-12 teachers that integrates local climate proxies in the classroom creating place-based experiences connecting students to the effects of climate change. Four tree species: Beech, Sugar Maple, Black Locust, and Hop Hornbeam, were collected from a local glacially-formed hill (from the Last Glacial Maximum) in Geneseo, NY. These trees died and were removed in August 2020, dried for 6+ months, and sanded (40-800 grit) until rings were visible. Annual growth rings were counted from ...


006— Pretreatment And Fiber Content Analysis Of Cannabis Sativa, Dina Bu, Jessica Roggie, Sarah Schmidlin, Barnabas Gikonyo 2021 SUNY Geneseo

006— Pretreatment And Fiber Content Analysis Of Cannabis Sativa, Dina Bu, Jessica Roggie, Sarah Schmidlin, Barnabas Gikonyo

GREAT Day

Cannabis sativa commonly known as hemp is one of the fastest-growing plants whose refined products have immense commercial value. Various products include refined hemp such as: biofuels, biodegradable plastics, textiles, dietary supplements, paper, clothing, and much more. Hemp fibers are also used in construction and manufacturing applications by strengthening their composite products. Hemp is a high yielding, sustainable, and environmentally friendly crop due to its various qualities, and has the potential to yield valuable raw materials for a great number of applications. Our research evaluates the pretreatment of hemp as well as the comparative analysis of the fiber content thereof ...


A Multiperiod Consensus-Based Transactive Energy System For Unbalanced Distribution Networks, Rui Cheng, Leigh Tesfatsion, Zhaoyu Wang 2021 Iowa State University

A Multiperiod Consensus-Based Transactive Energy System For Unbalanced Distribution Networks, Rui Cheng, Leigh Tesfatsion, Zhaoyu Wang

Economics Working Papers

This study develops a consensus-based transactive energy system design managed by an independent distribution system operator (DSO) for an unbalanced radial distribution network. The network is populated by welfare-maximizing customers with price-sensitive and fixed (non-price-sensitive) demands who make multiple successive power decisions during each real-time operating period OP. The DSO and customers engage in an iterative negotiation process in advance of each OP to determine retail price-to-go sequences for OP that align customer power decisions with network reliability constraints in a manner that respects customer privacy. The convergence properties of a dual decomposition algorithm developed to implement this negotiation process ...


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