Digital Commons Network^™

Water Quality Monitoring Protocol For Wadeable Streams And Rivers In The Northern Great Plains Network, Narrative Version 1.0, Marcia H. Wilson, Barbara L. Rowe, Robert A. Gitzen, Stephen K. Wilson, Kara J. Paintner-Green

United States National Park Service: Publications

Executive Summary

Preserving the national parks unimpaired for the enjoyment of future generations is a fundamental purpose of the National Park Service (NPS). To address growing concerns regarding the overall physical, chemical, and biological elements and processes of park ecosystems, the NPS implemented science-based management through “Vital Signs” monitoring in 270 national parks (NPS 2007). The Northern Great Plains Network (NGPN) is among the 32 National Park Service Networks participating in this monitoring effort. The NGPN will develop protocols over the next several years to determine the overall health or condition of resources within 13 parks located in Nebraska, North …

Hyperspectral Measurements Of Wet, Dry And Saline Soils From The Mcmurdo Dry Valleys: Soil Moisture Properties From Remote Sensing, Joseph S. Levy, Anne Nolin, Andrew G. Fountain, James W. Head

Geology Faculty Publications and Presentations

Soil moisture is a spatially heterogeneous quantity in the McMurdo Dry Valleys of Antarctica that exerts a large influence on the biological community and on the thermal state of Dry Valleys permafrost. The goal of this project was to determine whether hyperspectral remote sensing techniques could be used to determine soil moisture conditions in the Dry Valleys. We measured the spectral reflectance factors of wetted soil samples from the Dry Valleys under natural light conditions and related diagnostic spectral features to surface layer soil moisture content. Diagnostic water absorption features in the spectra at 1.4 mu m and 1.9 mu …

The Barriers To Adopting Composting Toilets Into Use In Urban And Suburban Locations In The United States, Julia Branstrator

Open Access Theses

The amount of fresh water available in the world is a finite resource. Large quantities of the fresh water are located in remote locations, while more accessible sources of fresh water are disproportionately distributed around the world. Some populations lack reliable access to clean water for daily life, making the routine use of potable water in toilets of upper-income countries a questionable practice in terms of resource responsibility, energy use, and sustainable infrastructure. The innovative nature of composting toilets offers potential solutions to the downfalls of conventional, waterborne toilets. However, the path to adoption of composting toilets has encountered barriers …

Nitrate Removal From Subsurface Drainage By Denitrifying Bioreactor, Erin Chichlowski

Open Access Theses

Denitrifying bioreactors are an edge-of-field best management practice that reduce nitrate in runoff and subsurface drainage waters with minimum surface foot print and management requirements. The objectives of this study included evaluating a 173 m3 wood chip bioreactor for nitrate reduction and removal rates, the effects on phosphorus, and the impacts of the bioreactor's physical characteristics on effective nitrate reduction During periods of flow, weekly water samples were collected for lab analysis of nitrate+nitrite (nitrate-N), total nitrogen (TN), soluble reactive phosphorus (SRP), and total phosphorus (TP) and measurements were made of water temperature, dissolved oxygen, pH, oxidation reduction potential, temperature, …

Profit-Maximizing Responses To Climate Change In Commodity Agriculture: Does Adaptation Matter?, Sajeev Erangu Purath Mohankumar

Open Access Theses

Accumulation of greenhouse gases in the atmosphere has led to rising temperatures, and is expected to lead to a change in climate. Crop yields are vulnerable to these changes. Adaptation is expected to be key to combating climate change impacts, but the effectiveness of adaptation strategies is not well understood. Hence, there is a need to assess the impacts of climate change on agriculture and devise profitable adaptation strategies to combat its effects. This study uses historical and three projected climate data sets to simulate yields using the crop model Daycent, empirical relationships between weather and agronomic variables that influence …

Watershed Delineation In The Field: A New Approach For Mobile Applications Using Lidar Elevation Data, Samuel Adam Noel

Open Access Theses

With the advancement of mobile devices, opportunities to take watershed management tasks out of the office and into the field can be realized. In turn, field workers can utilize these technologies to expedite the decision-making process so that they may focus on meeting with clients and addressing agricultural watershed management issues. High-resolution (∼1.5 m postspacing) elevation data gathered by light detection and ranging (LiDAR) provides the topographic detail necessary to model hydrology at the field-scale (∼1 km2).

Non-artifactual surface depressions lead to erroneous surface flow patterns when using existing algorithms. So a sequential depression-filling algorithm (SDFA) has been developed to …

Energy Production, Distribution, And Pollution Controls: Combining Engineering And Economic Analysis To Enhance Efficiency And Policy Design, David F. Perkis

Open Access Dissertations

Three published articles are presented which focus on enhancing various aspects of the energy supply chain. While each paper adopts a different methodology, all three combine engineering data and/or techniques with economic analysis to improve efficiency or policy design within energy markets. ^ The first paper combines a chemical engineering plant design model with an economic assessment of product enhancements within an ethanol production facility. While a new chemical process is shown to achieve greater ethanol yields, the animal feed by-products are denatured and decrease in value due to the degradation of a key nutritional amino acid. Overall, yield increases …

Migratory Ecology Of Sea Turtles, Nathan Jack Robinson

Open Access Dissertations

Establishing the movement patterns of free-ranging animals is imperative to understanding their behavior and ecology, and is often necessary for designing effective conservation-strategies. This is especially true for migratory species, such as sea turtles, whose long-distance movements form a major component of their life history. In this thesis, I investigated which factors are driving the migratory behavior of the leatherback turtleDermochelys coriacea. Firstly, I examined whether the timing of the nesting season (nesting phenology) is influenced by oceanographic conditions along the pre-nesting migratory route or by variation in population structure. The discovery that nesting phenology appears more influenced by …

Irrigation With Treated Wastewater: Potential And Limitations, Anne Dare

Open Access Dissertations

As the world population increases and resources become more coveted, water emerges as a key component to global food security. The Middle East and North Africa (MENA) is among the driest regions in the world: containing just one percent of the world's freshwater resources. An increasing population creates greater quantities of wastewater and demands greater quantities of food, so an obvious connection arises. However logical wastewater reuse may be for bridging the irrigation supply-demand gap in this arid region, significant limitations prevent widespread adoption. The overall goal of this research is to take a holistic view of the limitations facing …

Water Quality Monitoring Protocol For Wadeable Streams And Rivers In The Northern Great Plains Network, Standard Operating Procedures Version 1.0, Marcia H. Wilson, Stephen K. Wilson

United States National Park Service: Publications

Executive Summary

The Water Quality Monitoring Protocol includes two parts: a Narrative and the Standard Operating Procedures (SOPs). The Water Quality Monitoring Protocol Narrative Version 1.0 describes a general overview of the status of water resources throughout the parks in the National Park Service’s Northern Great Plains Network (NGPN), the objectives, the field methods, and the sampling design selected for this long-term monitoring program. This report includes the detailed SOPs for the NGPN’s Water Quality Monitoring Protocol. All water quality monitoring is conducted by the United States Geological Survey (USGS) through Interagency Agreements. The USGS North Dakota Water Science Center …

Water Current, Volume 46, No. 4, Fall 2014

Water Current Newsletter

Nebraska Water Center Symposium and Water Law Conference

June Water Tour Heads to Republican River Basin

From The Director

Meet the Faculty

WRAP Hears Slate of Good News at September Meeting

Kuzelka Receives Kremer Award

Nance Joins DWFI as Director of Communications

New Staff Join Daugherty Water for Food

Researchers Probe Climate's Impact on Groundwater

Dating Drought in Nebraska's Sandhills

Water Center Advances Programming

Water Quality Related Extension Publications

UNL Report Outlines Impact of Climate Change

News Briefs

Spring Seminars Began in January

Franz Engages Students with New Cosmic-Ray

Chemistry meets Biology in Kazakhstan

Current Status And Long-Term Trends In Water Quality And Living Resources In The Virginia Tributaries And Chesapeake Bay Mainstem From 1985 Through 2013, Daniel M. Dauer, Todd A. Egerton, John R. Donat, Michael F. Lane, Suzanne C. Doughten, Cindy Johnson, Monika Arora

Status and Trends for Virginia Chesapeake Bay

The period prior to the implementation of the Chesapeake Bay Monitoring Program was characterized by a marked decline in the water quality of the Chesapeake Bay. The disappearance of submerged aquatic vegetation in certain regions of the Bay, declines in the abundance of some commercially and recreationally important species, increases in the incidence of low dissolved oxygen events, changes in the Bay's food web, and other ecological problems have been related to the deteriorating water quality (e.g. USEPA, 1982,1983;Officer et al.,1984; Orth and Moore, 1984). The results of concentrated research efforts in the late 1970s and early 1980s stimulated the …

Carbon And Nitrogen Dynamics From Slow Pools Of Soil Organic Matter In A Temperate Forest: Pyrogenic Organic Matter And And Root Litter, Fernanda Dos Santos

Dissertations, Theses, and Capstone Projects

Soil organic matter (SOM) is the dominant reservoir of organic carbon (OC) in terrestrial ecosystems, storing approximately three times the size of the C pool in the atmosphere. In temperate forests, a major fraction of the SOM consists of slowly decaying soil organic C (SOC) pools. While slowly cycling C pools constitute a large reservoir of stable C in soils, the dominant environmental factors controlling this C pool remain unresolved. This research investigates two significant, but poorly characterized slowly decaying C pools: fine root litter (< 2mm) and thermally altered plant biomass (pyrogenic organic matter, PyOM). Specifically, I used compound-specific stable isotope analysis (¹³C and ¹⁵N) as my main methodological approach to examine the (1) …

Love, Creation, Virtue As Models For Environmental Education, Jeff Ploegstra

Faculty Work Comprehensive List

A look at how love, creation, and virtue should shape our conversations about the environment and environmental education.

The Effects Of Altitude And Micro-Spatial Habitats On The Physiognomic Characteristics Of Syzygium Guineense In Mazumbai Forest Reserve, Erin Brynn Zalmanek

Independent Study Project (ISP) Collection

In order to examine the affects that altitude and micro-spatial habitat have on the physiognomy of Syzygium Guineense; buttress sphere size, number of buttresses, relative size of the buttresses, DBH, and height were measured in three different altitudinal bands (1400 - 1500 m, 1500 - 1600 m, and 1600 - 1700 m) and three different habits portraying concave, convex, and intermediate landscapes. Micro-spatial habits showed to have weak to no effect on all measured physiognomic variables giving insignificant p-values according to ANOVA. However, correlation tests against leaf litter depth and slope showed to have some relation to the size and …

The Optimal Foraging Of Equus Burchelli At Enashiva Nature Refuge, Edward Haubenreiser

Independent Study Project (ISP) Collection

Within the country of Tanzania lies a vast ecosystem known as the Serengeti. This unique landscape, primarily of grasslands and woodlands, shapes the seasonal feeding habits of the abundant wildlife that call the area home. While these feeding habits on a large spatial scale are well understood, such behavior within a specie’s specific environment remains of interest. With the theory of optimal foraging in mind, which considers how animals should look for and select food (Green, 1990), I studied the foraging habits of resident Burchell’s zebra (Equus burchelli) by observing if they move and forage among distinct resource …

Sharks Aren’T The Only Fish To Be Afraid Of… A Survey Of Serranidae Species Of Genus Aethaloperca, Anyperodon, Cephalopholis, Epinephelus, And Plectropomus On Chumbe Island, Zanzibar, Tanzania, Kimberly D. Nesbitt

Independent Study Project (ISP) Collection

A census as well as behavioral analysis of six grouper (Serranidae) species was conducted on Chumbe Island off the coast of Unguja, Zanzibar, Tanzania during October and November 2014. The six species were counted, divided into size classes, and behavioral notes were taken on the individuals observed on both the western drop-off of Chumbe Island’s reef as well as the back, shallower reef. Results showed that larger individuals, as well as species that grow larger, inhabit the deeper waters of the drop-off, while smaller species and juveniles inhabit the shallower back reef. The Brown Marbled (Epinephelus fuscoguttatus) and …

A Crude Awakening: The Relationship Between Petroleum Exploration And Environmental Conservation In Western Uganda, Kristina Ericson

Independent Study Project (ISP) Collection

In this study the researcher aims to explore the emerging oil and natural gas processes in the Republic of Uganda and the potential impacts that such exploration will generate upon Uganda’s biodiversity and local livelihoods. The researcher will approach this topic through extensive research on emerging and current legal frameworks pertaining to Uganda’s natural environment, and through practicum-based research via leading non-profit organizations in Uganda.

During the research process the researcher worked as a Student Research Intern with International Alert. International Alert is an international Non-Governmental Organization (NGO) that works to promote peace building and conflict resolution in over thirty …

Environmental Education In Amman, Sara Lyrnn Green

Independent Study Project (ISP) Collection

This research addresses environmental education in public and private schools in Amman, Jordan and what is being done to expand environmental awareness by both schools and the government. This study’s methodology is comprised of interviews with teachers and government employees as well as analysis of material culture. The research finds that environmental education is priority for schools and the government, but that more can be done in expanding environmental awareness. This study points out barriers to environmental education in schools with the hope that these will be addressed and improved.

Noise Pollution? What's The Solution?: Understanding Traffic Noise Pollution In Gettysburg, Pennsylvania, Andrew F. Kapp, Joseph M. Passmore, Anika H. Schneider

Student Publications

Noise pollution can be damaging to a community by impacting its atmosphere as well as the health of its residents, local quality of life, and local economy. Our study sought to gain insight into the level of noise pollution in Gettysburg, both in-town and on the Gettysburg College campus, and how noise pollution may be affecting the local residents and students. We selected 9 sampling sites, 6 in-town and 3 on the college campus, and measured the noise pollution in dBA with portable sound meters three days a week and three times a day over a three week period. Our …

Application Of Satellite Data To Model Storm Runoff Into Rosamond Dry Lake, Mridul Oli

LMU Theses and Dissertations

Antelope Valley is situated in Southern California and is bounded by the Tehachapi and the San Gabriel Mountains. It stretches over 2,200 mi2 and encompasses Rosamond Dry Lake and the 1,200 mi2 watershed draining into it. The cities of Lancaster and Palmdale are the two major urban centers that lie in the watershed draining into Rosamond Dry Lake. The lake lies within the vicinity of the Edwards Air Force Base and provides an important site for aviation research and test operations in addition to ecosystem services. Hence, it is necessary to balance the need to remove water from the lake …

The Effects Of Simulated Spermophilus Franklinii Burrowing On Prairie Soil Invertebrate Communities, Nicholas G. Brown

All Student Theses and Dissertations

Burrowing of subterranean mammals can have ecological effects on overlying vegetation, invertebrate communities, and surrounding soil characteristics. Franklin’s ground squirrel (Spermophilus franklinii) is a declining, tunneling mammal species previously found throughout Central Illinois. Preference for natural tallgrass prairie habitat with loose soil marks Illinois as the southern extreme of their range. Through urbanization and agricultural practices this species’ population numbers have declined dramatically in southern and central Illinois. This study looks at the effects simulated Franklin’s ground squirrel burrows have on soil invertebrate composition, abundance, and diversity by comparing effects of the presence/exclusion of burrows, animals, and their …

Plant Species And Soil Type Effects On Root Characteristics, Microbiota And Plant-Soil Feedback Responses In Four Prairie Species, Charles J. Impastato

All Student Theses and Dissertations

Arbuscular mycorrhizal fungi (AMF) form a relationship with a multitude of host plants that is estimated to include 70-90% of terrestrial plant species over a wide range of environments. AMF and other microbiota, as well as abiotic factors are an important component of plant-soil feedback systems. The effects of plant species and soil type on root characteristics, plant-soil feedback and influence on microbiota and arbuscular mycorrhizal colonization were assessed through a manipulative laboratory study. Aster laevis, Parthenium integrifolium, Aster novae-angliae and Andropogon gerardii were grown in sterilized control soil and soil collected from beneath monocultures of A. laevis, P. integrifolium, …

Science Identity Transformations Through Place-Based Teaching And Learning In The Natural World, Amy Defelice

Dissertations, Theses, and Capstone Projects

This dissertation includes three main components related through a sociocultural lens of identity transformation. The first component describes the Field Studies program for ninth grade students at Brooklyn Academy of Science and the Environment (BASE High School), and explores how outdoor settings and place-based pedagogies can be used to enhance urban students' science identities. Student researchers took digital photographs of their Field Studies experiences and met in cogenerative dialogues with me, their teacher, where we shared our reflections. The second component explains students' experiences and reactions to a week-long place-based geoscience program held over spring break at Prospect Park. This …

First Record Of The Tropical House Gecko Hemidactylus Mabouia (Moreau De Jonnès, 1818) In Texas, Alejandro Fierro-Cabo, August Rentfro

School of Earth, Environmental, & Marine Sciences Faculty Publications

Invasions of the tropical house gecko Hemidactylus mabouia (Moreau de Jonnes, 1818) in the tropical Americas are well documented. While this gecko has been reported as well established and expanding its range in Florida, here we document the first record in the United States outside of this state. We detected a small reproducing population in Cameron County, Brownsville, Texas. We expect a rapid colonization of buildings by this species in southern Texas. We consider that this potential invasion poses novel obstacles to the continued presence of the earlier invasive Mediterranean gecko Hemidactylus turcicus (Linnaeus, 1758) across Texas

Predictors Patterns And Processes Of Extinction Risk In Porgies And Seabreams (Family: Sparidae), Mia Theresa B. Conteros

Biological Sciences Theses & Dissertations

A variety of human-induced changes are having profound impacts on the marine environment, and no area on the planet remains unaffected by the detrimental effects of our activities. These stressors can potentially lead to synergistic effects, causing accelerated biodiversity loss and diminished ecosystem functioning. Identification and understanding of the factors that drive species to heightened risk of extinction are important goals in conservation.

The Sparidae are commercially important and ecologically complex marine fishes; global extinction risk assessments using the IUCN Red List of Threatened Species methodology show that 9% (13 species) have increased vulnerability to population declines from intense fishing …

Learning From Conservation Planning For The U.S. National Wildlife Refuges, Robert L. Fischman, Vicky J. Meretsky

Articles by Maurer Faculty

The U.S. National Wildlife Refuge System has nearly completed its first round of unit-level, comprehensive conservation plans (CCPs) and will soon begin required revisions. Laws and policies governing refuge planning emphasize ecological integrity, landscape-scale conservation, and adaptive management. We evaluated 185 CCPs completed during 2005–2011, which cover 324 of 555 national wildlife refuges. We reviewed CCP prescriptions addressing 5 common conservation issues (habitat and game, nongame, imperiled, and invasive species) and 3 specialized topics (landscape-scale conservation, climate change, and environmental quality). Common conservation issues received prescriptions in >90% of CCPs. Specialized topics received more variable treatment. Prescriptions for aquatic connectivity, …

The Interaction Between Arsenic And Struvite During Coprecipitation And Adsorption Processes, Ning Ma

Dissertations, Theses, and Capstone Projects

The formation of struvite, MgNH4PO4*6H2O (MAP), from wastes is one of the methods that can be used to recover P from wastes efficiently. However, since there are usually toxic components in the wastes, like arsenic (As), the possibility of having toxic contaminants in MAP is a big concern. So, the interaction between As and MAP during coprecipitation (CPT) and adsorption (ADS) processes were studied at pH 8-11. MAP precipitated without As at pH 8-11 was also characterized.

During CPT process, the MAP was precipitated from a MgCl2-(NH4)2HPO4-NaCl-H2O system spiked with As at an initial pH (pHi) of 8-11. The batch …

Warming, Competition, And Bromus Tectorum Population Growth Across An Elevation Gradient, Aldo Compagnoni, Peter B. Adler

Green Canyon Environmental Research Area, Logan Utah

Cheatgrass (Bromus tectorum) is one of the most problematic invasive plant species in North America and climate change threatens to exacerbate its impacts. We conducted a two‐year field experiment to test the effect of warming, competition, and seed source on cheatgrass performance across an elevation gradient in northern Utah. We hypothesized that warming would increase cheatgrass performance, but that warming effects would be limited by competing vegetation and by local adaptation of cheatgrass seed sources. The warming treatment relied on open top chambers, we removed vegetation to assess the effect of competition from neighboring vegetation, and we reciprocally …

The Status Of Fishes In The Missouri River, Nebraska: Shovelnose Sturgeon (Scaphirhynchus Platorynchus), Kirk D. Steffensen, Sam Stukel, Dane A. Shuman

Transactions of the Nebraska Academy of Sciences and Affiliated Societies

The Shovelnose Sturgeon Scaphirhynchus platorynchus remains the most abundant riverine sturgeon species in North American despite the anthropogenic modifications that have occurred throughout their historic range; however, their populations have declined throughout Nebraska since the construction of Fort Randall and Gavins Point Dams. Therefore, the objective of this study was to present the current status of Shovelnose Sturgeon in the Missouri River along Nebraska’s border. Data was acquired from 2003 to 2012 from all reaches of the Missouri River along Nebraska’s eastern border. Catch rates of Shovelnose Sturgeon increased in a downstream trend and were highest in the reach below …