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Modeling The Release And Spreading Of Permanganate From Aerated Slow-Release Oxidants In A Laboratory Flow Tank, Ann Kambhu, Yusong Li, Troy E. Gilmore, Steve D. Comfort 2021 University of Nebraska-Lincoln

Modeling The Release And Spreading Of Permanganate From Aerated Slow-Release Oxidants In A Laboratory Flow Tank, Ann Kambhu, Yusong Li, Troy E. Gilmore, Steve D. Comfort

Papers in Natural Resources

Aerated, slow-release oxidants are a relatively new technology for treating contaminated aquifers. A critical need for advancing this technology is developing a reliable method for predicting the radius of influence (ROI) around each drive point. In this work, we report a series of laboratory flow tank experiments and numerical modeling efforts designed to predict the release and spreading of permanganate from aerated oxidant candles (oxidant-wax composites). To mimic the design of the oxidant delivery system used in the field, a double screen was used in a series of flow tank experiments where the oxidant was placed inside the inner screen ...


Corn And Soybean Response To Wastewater-Recycled Phosphorus Fertilizers, Shane Ylagan 2020 University of Arkansas, Fayetteville

Corn And Soybean Response To Wastewater-Recycled Phosphorus Fertilizers, Shane Ylagan

Crop, Soil and Environmental Sciences Undergraduate Honors Theses

The ability to recycle phosphorus (P) from wastewaters could provide a sustainable, continuous source of P that might also help protect surface water quality from P enrichment. The mineral struvite (MgNH4PO4·6H2O) is an understudied material that can be created from Pcontaining wastewater and has been shown to have agricultural fertilizer value. The objective of this study was to evaluate the effects of electrochemically precipitated struvite (ECST), chemically precipitated struvite (Crystal Green; CG), diammonium phosphate (DAP), monoammonium phosphate (MAP), rock phosphate (RP), and triple super phosphate (TSP) on corn (Zea mays) and soybean (Glycine max) response in a 79-day greenhouse ...


Deep Neural Network For Complex Open-Water Wetland Mapping Using High-Resolution Worldview-3 And Airborne Lidar Data, Vitor S. Martins, Amy L. Kaleita, Brian K. Gelder, Gustavo W. Nagel, Daniel A. Maciel 2020 Iowa State University

Deep Neural Network For Complex Open-Water Wetland Mapping Using High-Resolution Worldview-3 And Airborne Lidar Data, Vitor S. Martins, Amy L. Kaleita, Brian K. Gelder, Gustavo W. Nagel, Daniel A. Maciel

Agricultural and Biosystems Engineering Publications

Wetland inventory maps are essential information for the conservation and management of natural wetland areas. The classification framework is crucial for successful mapping of complex wetlands, including the model selection, input variables and training procedures. In this context, deep neural network (DNN) is a powerful technique for remote sensing image classification, but this model application for wetland mapping has not been discussed in the previous literature, especially using commercial WorldView-3 data. This study developed a new framework for wetland mapping using DNN algorithm and WorldView-3 image in the Millrace Flats Wildlife Management Area, Iowa, USA. The study area has several ...


Water, Fish, And Fire: Interdisciplinary Research On Ecosystem Services And Climate Adaptation, Liana Prudencio 2020 Utah State University

Water, Fish, And Fire: Interdisciplinary Research On Ecosystem Services And Climate Adaptation, Liana Prudencio

All Graduate Theses and Dissertations

Ecosystem services, or benefits from the environment, are plentiful and vary from place to place. Human activities and climate change have impacted these services in every region of the world. This dissertation explores multiple ecosystem services, from water quality improvement to provisioning of fish and habitat, in multiple and international contexts. The first chapter synthesizes the literature on stormwater management and ecosystem services, finding that research at this intersection has provided many parcel-level studies and frameworks for implementing green infrastructure. The second chapter extends the stormwater management literature by quantifying the impacts of green infrastructure on water quantity and quality ...


Environmental Controls On Didymosphenia Geminata Bloom Formation, Lindsay Capito 2020 Utah State University

Environmental Controls On Didymosphenia Geminata Bloom Formation, Lindsay Capito

All Graduate Theses and Dissertations

Climate change is causing rapid glacial recession and earlier snowmelt, which alter the physical and chemical properties of rivers. As a result, organisms at the base of the food web are responding in unforeseen ways. We use the nuisance algae D. geminata (Didymo) as a case study for how climate induced shifts in the timing of glacial and snowmelt runoff are affecting river ecosystems. We evaluated how shifts in the timing of nutrient concentrations and light availability affect nuisance blooms of Didymo in three complementary ways. These are, field studies across streams in various stages of glacial recession, weekly measurements ...


Application Of Excitation-Emission Matrices To Fluorescent Dye Tracing Of Groundwater Flow, Cayla M. Baughn 2020 Western Kentucky University

Application Of Excitation-Emission Matrices To Fluorescent Dye Tracing Of Groundwater Flow, Cayla M. Baughn

Masters Theses & Specialist Projects

Fluorescent dye tracing of groundwater is a technique employed particularly in carbonate rock karst regions to examine karst hydrology by mapping underground flow paths. It is important to understand the hydrology of karst environments because solutionally-enlarged conduits may allow the rapid influx of contaminants into the groundwater system. Fluorescent dye tracing involves the injection of a fluorescent dye into an appropriate injection site (sinking streams, sinkholes, or even through soil flushed with water) and is followed by sampling at sites where the dye may be recovered (typically springs). Various methods exist by which sampling may occur, but all methods ultimately ...


Gender And Presence Of Children: Examining Media Uses, Informational Needs, And Source Preferences During The Flint, Michigan Water Crisis, Ashleigh M. Day, Sydney O'Shay-Wallace, Matthew W. Seeger, Shawn P. McElmurry 2020 The University of Texas at Tyler

Gender And Presence Of Children: Examining Media Uses, Informational Needs, And Source Preferences During The Flint, Michigan Water Crisis, Ashleigh M. Day, Sydney O'Shay-Wallace, Matthew W. Seeger, Shawn P. Mcelmurry

Journal of International Crisis and Risk Communication Research

In 2014, a water crisis emerged in Flint, Michigan. Using uses and gratifications theory as the guiding framework, this study examines if crisis-related media uses, informational needs, and source preferences are related to respondents’ gender and/or whether or not respondents had children. A random sample of 208 Flint residents yielded results that are largely consistent with extant research, although minor nuances were found. Media uses, preferred informational sources, and desire to receive future crisis-related health information varied between women and men. Women reported significantly higher use of Facebook and Instagram. However, there were not significant differences between genders or ...


Un Sdg 4: When Access To Education Is *Not* Enough, Christine M. Chiarelli-Helminiak 2020 West Chester University of Pennsylvania

Un Sdg 4: When Access To Education Is *Not* Enough, Christine M. Chiarelli-Helminiak

Sustainability Research & Practice Seminar Presentations

No abstract provided.


Investigating The Significance Of Aerosols In Determining The Coronavirus Fatality Rate Among Three European Countries, Wenzhao Li, Rejoice Thomas, Hesham el-Askary, Thomas Piechota, Daniele Struppa, Khaled A. Abdel Ghaffar 2020 Chapman University

Investigating The Significance Of Aerosols In Determining The Coronavirus Fatality Rate Among Three European Countries, Wenzhao Li, Rejoice Thomas, Hesham El-Askary, Thomas Piechota, Daniele Struppa, Khaled A. Abdel Ghaffar

Mathematics, Physics, and Computer Science Faculty Articles and Research

The coronavirus pandemic has not only gripped the scientific community in the search for a vaccine or a cure but also in attempts using statistics and association analysis—to identify environmental factors that increase its potency. A study by Ogen (Sci Total Environ 726:138605, 2020a) explored the possible correlation between coronavirus fatality and high nitrogen dioxide exposure in four European countries—France, Germany, Italy and Spain. Meanwhile, another study showed the importance of nitrogen dioxide along with population density in determining the coronavirus pandemic rate in England. In this follow-up study, Aerosol Optical Depth (AOD) was introduced in conjunction ...


Instability Of Glucocorticoid Metabolites In Coyote Scats: Implications For Field Sampling, Erika T. Stevenson, Eric M. Gese, Lorin A. Neuman-Lee, Susannah S. French 2020 US Department of Agriculture

Instability Of Glucocorticoid Metabolites In Coyote Scats: Implications For Field Sampling, Erika T. Stevenson, Eric M. Gese, Lorin A. Neuman-Lee, Susannah S. French

Human–Wildlife Interactions

Studying physiologic stress responses can assist in understanding the welfare of animals. One method of measuring the physiologic stress response is evaluating concentrations of glucocorticoid metabolites in feces. Previously, using an adrenocorticotropic hormone challenge, we found fecal glucocorticoid metabolite levels were a reliable indicator of physiologic stress response in coyotes (Canis latrans). We determine whether glucocorticoid metabolite concentrations remain stable when collecting feces over a 2-week period, a timeframe commonly used in scat surveys for wild canids. We collected feces from 6 captive coyotes maintained at the U.S. Department of Agriculture, Wildlife Services, National Wildlife Research Center, Predator Research ...


Water Quality Assessment In The Occurrence Of Acanthaster Spp. (Crown-Of-Thorns Starfish, Cots) On Coral Reefs In Menjangan Island, Bali, Indonesia, Novia Arinda Pradisty, Eghbert Elvan Ampou, Rizki Hanintyo 2020 Institute for Marine Research and Observation, Ministry of Marine Affairs and Fisheries, Bali 82251, Indonesia

Water Quality Assessment In The Occurrence Of Acanthaster Spp. (Crown-Of-Thorns Starfish, Cots) On Coral Reefs In Menjangan Island, Bali, Indonesia, Novia Arinda Pradisty, Eghbert Elvan Ampou, Rizki Hanintyo

Makara Journal of Science

Aquatic stressors are known to cause biological impairment that can result in biodiversity loss in several Marine Protected Areas (MPA), including in Menjangan Island, West Bali National Park. The objectives of this study were to correlate the changes in water quality parameters with the biological effect of Crown-of-Thorns starfish (CoTS) population dynamics and to assess the most applicable parameters for continuous environmental monitoring. Field observations and surveys were conducted three times in 2017, during the wet season, dry season and season transition, in order to assess the effect of seasonal variability. Redundancy Analysis (RDA) was performed to determine the relationship ...


Second-Best Prioritization Of Environmental Cleanups, Jacob LaRiviere, Matthew J. McMahon, Justin Roush 2020 Microsoft, University of Washington, University of Tennessee

Second-Best Prioritization Of Environmental Cleanups, Jacob Lariviere, Matthew J. Mcmahon, Justin Roush

Sustainability Research & Practice Seminar Presentations

No abstract provided.


The Concept Of Natureculture Document: A Conceptual Exploration Of Seeds, Embodied Information, And Unconventional Records, Marc Kosciejew 2020 University of Malta

The Concept Of Natureculture Document: A Conceptual Exploration Of Seeds, Embodied Information, And Unconventional Records, Marc Kosciejew

Journal of Contemporary Archival Studies

Seedbanks, or so-called archival arks of the apocalypse, are addressing accelerating anthropocentric alterations to the environment by collecting, storing, and preserving seeds. These are specialized archival repositories that approach, frame, and use seeds as documents for agricultural and scientific research, classification and preservation work, and various other archival and administrative purposes. Seedbanks indeed are archives of unconventional records.

This article introduces the concept of natureculture document as a framing device in which to help analyze the documentary status of objects that are not necessarily or usually considered as documents or having documentary characteristics. This concept, coupled with its interdisciplinary theoretical ...


Factors Influencing Apparent Nest Success In Eastern Bluebirds, Katelynn Gierlinger 2020 State University of New York College at Brockport

Factors Influencing Apparent Nest Success In Eastern Bluebirds, Katelynn Gierlinger

Senior Honors Theses

Collection of basic breeding biology data and analysis of factors that can impact the apparent nest success of passerines is critical in tracking population dynamics and making decisions concerning conservation. The Eastern Bluebird (Sialis sialis) is one species of concern whose declines in abundances fueled the common practice of establishing artificial nest boxes. I carried out my study in 2019 on the SUNY Brockport campus using 20 Audubon and 20 Peterson nest boxes to investigate what variables may impact fledgling success, including egg and nestling traits as well as site characteristics. Egg mass and volume tended to be larger in ...


Pollinator Communities On Public Lands: Creating New Opportunities For Management, Jacob Kearney 2020 State University of New York College at Brockport

Pollinator Communities On Public Lands: Creating New Opportunities For Management, Jacob Kearney

Senior Honors Theses

Because butterfly species such as monarchs (Danaus plexippus) are declining, they have received renewed public and scientific interest. Butterflies provide important ecological services, such as pollination. Understanding their ecology is vital for proper conservation and management, with targeted management on public lands increasing in the last few decades. To determine useful management strategies for butterfly populations on public lands, I investigated butterfly use in two “non-traditional” sites utilized by butterflies at Montezuma National Wildlife Refuge (MNWR): a marsh in full drawdown phase (MP) and a marsh in partial drawdown phase (SF). I also investigated butterfly use at an upland field ...


Algal Biomarkers As A Proxy For Pco2: Constraints From Late Quaternary Sapropels In The Eastern Mediterranean, Caitlyn R. Witkowski, Marcel T.J. van der Meer, Brian Blais, Jaap S. Sinninghe Damsté, Stefan Schouten 2020 Royal Netherlands Institute for Sea Research

Algal Biomarkers As A Proxy For Pco2: Constraints From Late Quaternary Sapropels In The Eastern Mediterranean, Caitlyn R. Witkowski, Marcel T.J. Van Der Meer, Brian Blais, Jaap S. Sinninghe Damsté, Stefan Schouten

Science and Technology Faculty Journal Articles

Records of carbon dioxide concentrations (partial pressure expressed as pCO2) over Earth’s history provide trends that are critical to understand our changing world. To better constrain pCO2 estimations, here we test organic pCO2 proxies against the direct measurements of pCO2 recorded in ice cores. Based on the concept of stable carbon isotopic fractionation due to photosynthetic CO2 fixation (Ɛp), we use the stable carbon isotopic composition (δ13C) of the recently proposed biomarker phytol (from all photoautotrophs), as well as the conventionally used alkenone biomarkers (from specific species) for comparison, to reconstruct pCO2 over several ...


Examining How The Presence Of Invasive Swallow-Wort (Vincetoxicum Sp.) Affects The Abundance Of Earthworms, Samantha Dube 2020 State University of New York College at Brockport

Examining How The Presence Of Invasive Swallow-Wort (Vincetoxicum Sp.) Affects The Abundance Of Earthworms, Samantha Dube

Senior Honors Theses

Swallow-wort (Vincetoxicum sp.), an invasive plant in Western New York, outcompetes native species such as common milkweed (Asclepias syriaca). Swallow-wort may release allelochemicals that change the composition of the soil to benefit its own growth. Earthworms are also an invasive species in our area. In excess, they can till the soil too much, drying it out and making it difficult for any plants to grow. While overturning the soil has its benefits, too many worms can cause the soil horizons to merge, displacing minerals and loosening up the foundation for most plants. Because no one had ever studied the relationship ...


Listening To Young People: Philadelphia Youth Organizers' Perspectives On 2020 And Sustaining The Movement(S) Beyond, Hannah Ashley, Ananiya Jones, Lilah Saber, Mayana Ashley-Carner 2020 West Chester University of Pennsylvania

Listening To Young People: Philadelphia Youth Organizers' Perspectives On 2020 And Sustaining The Movement(S) Beyond, Hannah Ashley, Ananiya Jones, Lilah Saber, Mayana Ashley-Carner

Sustainability Research & Practice Seminar Presentations

No abstract provided.


A Neighborhood-Level Perspective Of Real Estate Determinants In Three U.S. Cities, Mikhail Samarin, Madhuri Sharma 2020 University of Tennessee

A Neighborhood-Level Perspective Of Real Estate Determinants In Three U.S. Cities, Mikhail Samarin, Madhuri Sharma

International Journal of Geospatial and Environmental Research

This study examines the relationships between commonly available socio-economic and environmental determinants of real estate (crime, quality of schools, racial/ethnic diversity, and built environment) and real estate values in socially and politically recognized units in the three largest cities of the U.S.—New York, Los Angeles, and Chicago. Utilizing a variety of data sources used by potential real estate buyers, we conduct correlations, mapping, and multiple regression analyses to identify the degrees and strengths of associations between select determinants and real estate values at these politically recognized units. Results suggest that the cities exhibit similar patterns for crime-related ...


Mapping The Immediate And Prolonged Impacts Of, And Adaptations To, Fire In The Kenai River Fishery, Jordan Smith 2020 Utah State University

Mapping The Immediate And Prolonged Impacts Of, And Adaptations To, Fire In The Kenai River Fishery, Jordan Smith

Funded Research Records

No abstract provided.


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