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Articles 121 - 150 of 6848
Full-Text Articles in Physical Sciences and Mathematics
Report On And Recommendations Arising From The Visit Of Dr Michael Warne (University Of Queensland) And Robert Sluggett To Kununurra, Michael Warne Dr, Rob Sluggett
Report On And Recommendations Arising From The Visit Of Dr Michael Warne (University Of Queensland) And Robert Sluggett To Kununurra, Michael Warne Dr, Rob Sluggett
Natural resources commissioned reports
Dr Michael Warne of the Reef Catchments Science Partnership and Robert Sluggett of Farmacist Pty Ltd were invited by Richard George of Department of Primary Industries and Regional Development (DPIRD) to visit Kununurra, Western Australia.
The project was financially supported by the National Water Grid Authority project “Managing water quality to enable future irrigation development in the Kimberley Region”. The aim of the visit was for Dr Warne and Rob Sluggett to engage with farmers, key stakeholders and staff from DPIRD in order to understand the agriculture and water quality in the Ord and Keep river region; and to share …
Spatial And Temporal Activity Patterns Among Sympatric Tree-Roosting Bat Species In An Agriculturally Dominated Great Plains Landscape, Christopher Fill, Craig R. Allen, John F. Benson, Dirac Twidwell
Spatial And Temporal Activity Patterns Among Sympatric Tree-Roosting Bat Species In An Agriculturally Dominated Great Plains Landscape, Christopher Fill, Craig R. Allen, John F. Benson, Dirac Twidwell
Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications
In agroecosystems, bats can provide a critical ecosystem service by consuming night-flying insect pests. However, many bats also face intense population pressures from human landscape modification, global change and novel diseases. To better understand the behavioral activity of different bat species with respect to space, time, habitat, and other bat species in this environment, we investigated species correlations in space and time over row crop agricultural fields. We used acoustic grids to document spatial and temporal co-occurrence or avoidance between bats and recorded eight species across the 10 field sites we sampled. All species significantly overlapped in two-dimensional space and …
Planning For A Gnarly Future: Reimagining Planning To Empower Your Community, Elizabeth Sodja
Planning For A Gnarly Future: Reimagining Planning To Empower Your Community, Elizabeth Sodja
All Current Publications
The purpose of this document is to summarize key takeaways and resources from our 5-part online learning series featuring planning solutions to challenges facing Gateway and Natural Amenity Region (GNAR) communities in the west.
Can Upscaling Ground Nadir Sif To Eddy Covariance Footprint Improve The Relationship Between Sif And Gpp In Croplands?, Genghong Wu, Kaiyu Guan, Chongya Jiang, Hyungsuk Kimm, Guofang Miao, Xi Yang, Carl J. Bernacchi, Xiangmin Sun, Andrew E. Suyker, Caitlin E. Moore
Can Upscaling Ground Nadir Sif To Eddy Covariance Footprint Improve The Relationship Between Sif And Gpp In Croplands?, Genghong Wu, Kaiyu Guan, Chongya Jiang, Hyungsuk Kimm, Guofang Miao, Xi Yang, Carl J. Bernacchi, Xiangmin Sun, Andrew E. Suyker, Caitlin E. Moore
School of Natural Resources: Faculty Publications
Ground solar-induced chlorophyll fluorescence (SIF) is important for the mechanistic understanding of the dynamics of vegetation gross primary production (GPP) at fine spatiotemporal scales. However, eddy covariance (EC) observations generally cover larger footprint areas than ground SIF observations (a bare fiber with nadir), and this footprint mismatch between nadir SIF and GPP could complicate the canopy SIF-GPP relationships. Here, we upscaled nadir SIF observations to EC footprint and investigated the change in SIF-GPP relationships after the upscaling in cropland. We included 13 site-years data in our study, with seven site-years corn, four siteyears soybeans, and two site-years miscanthus, all located …
Global Projections Of Flash Drought Show Increased Risk In A Warming Climate, Jordan I. Christian, Elinor R. Martin, Jeffrey B. Basara, Jason C. Furtado, Jason A. Otkin, Lauren E. L. Lowman, Eric D. Hunt, Vimal Mishra, Xiangming Xiao
Global Projections Of Flash Drought Show Increased Risk In A Warming Climate, Jordan I. Christian, Elinor R. Martin, Jeffrey B. Basara, Jason C. Furtado, Jason A. Otkin, Lauren E. L. Lowman, Eric D. Hunt, Vimal Mishra, Xiangming Xiao
School of Natural Resources: Faculty Publications
Flash drought, characterized by unusually rapid drying, can have substantial impact on many socioeconomic sectors, particularly agriculture. However, potential changes to flash drought risk in a warming climate remain unknown. In this study, projected changes in flash drought frequency and cropland risk from flash drought are quantified using global climate model simulations. We find that flash drought occurrence is expected to increase globally among all scenarios, with the sharpest increases seen in scenarios with higher radiative forcing and greater fossil fuel usage. Flash drought risk over cropland is expected to increase globally, with the largest increases projected across North America …
Feral Swine As Indirect Indicators Of Environmental Anthrax Contamination And Potential Mechanical Vectors Of Infectious Spores, Rachel M. Maison, Maggie R. Priore, Vienna R. Brown, Michael Bodenchuk, Bradley R. Borlee, Richard Bowen, Angela M. Bosco-Lauth
Feral Swine As Indirect Indicators Of Environmental Anthrax Contamination And Potential Mechanical Vectors Of Infectious Spores, Rachel M. Maison, Maggie R. Priore, Vienna R. Brown, Michael Bodenchuk, Bradley R. Borlee, Richard Bowen, Angela M. Bosco-Lauth
USDA Wildlife Services: Staff Publications
U.S. government work
Willow Abundance And Condition Mapping In Rocky Mountain National Park, Eric M. Nielsen
Willow Abundance And Condition Mapping In Rocky Mountain National Park, Eric M. Nielsen
Institute for Natural Resources Publications
Riparian and wetland willow species have undergone serious declines in Rocky Mountain National Park as a consequence of a variety of environmental changes and, most recently, damage resulting from moose overpopulation. To address concerns about the long-term status of willows in the park, we developed remote sensing-based raster maps of riparian and wetland willow species presence, canopy cover percentage, canopy height, and leaf area index. All outputs were produced at 3-meter resolution, and represent willows as they existed in 2021. The mapping was performed via random forests classification and regression models trained on several hundred vegetation plots from a variety …
Revisiting The Definition Of Field Capacity As A Functional Parameter In A Layered Agronomic Soil Profile Beneath Irrigated Maize, Paolo Nasta, Trenton E. Franz, Justin P. Gibson, Nunzio Romano
Revisiting The Definition Of Field Capacity As A Functional Parameter In A Layered Agronomic Soil Profile Beneath Irrigated Maize, Paolo Nasta, Trenton E. Franz, Justin P. Gibson, Nunzio Romano
School of Natural Resources: Faculty Publications
The soil water content at the condition of field capacity (θFC) is a key parameter in irrigation scheduling and has been suggested to be determined by running a synthetic drainage experiment until the flux rate (q) at the bottom of the soil profile achieves a predefined negligible value (qFC). We question the impact of qFC on the assessment of field capacity. Moreover, calculating θFC as the integral mean of the water content profile when q is equal to qFC is strictly valid only for uniform soil profiles. By contrast, …
Trade-Offs Between Temperature And Fitness In Euschistus Heros (Fabricius) (Hemiptera: Pentatomidae): Implications For Mass Rearing And Field Management, Ana Paula Frugeri Barrufaldi, Rafael Hayashida, William Wyatt Hoback, Leon G. Higley, Jose Romario De Carvalho, Regiane Cristina De Oliveira
Trade-Offs Between Temperature And Fitness In Euschistus Heros (Fabricius) (Hemiptera: Pentatomidae): Implications For Mass Rearing And Field Management, Ana Paula Frugeri Barrufaldi, Rafael Hayashida, William Wyatt Hoback, Leon G. Higley, Jose Romario De Carvalho, Regiane Cristina De Oliveira
School of Natural Resources: Faculty Publications
The brown stink bug, Euschistus heros (Fabricius, 1798) (Hemiptera: Pentatomidae), is one of the most abundant soybean stink bug pests in Brazil. Temperature is a key factor that affects its development and reproduction, and fluctuating temperatures may impact the development and reproduction of E. heros differently from those under constant temperatures. The objective of this study was to evaluate the influence of constant and fluctuating temperature on the biological characteristics of E. heros in three successive generations. Treatments consisted of six constant temperatures (19oC, 22oC, 25oC, 28oC, 31oC and 34 …
Downstream Hydrochemistry And Irrigation Water Quality Of The Syr Darya, Aral Sea Basin, South Kazakhstan, Bagdat Satybaldiyev, Baimurat Ismailov, Nurbek Nurpeisov, Kairat Kenges, Daniel D. Snow, Arindam Malakar, Omirzhan Taukebayev, Bolat Uralbekov
Downstream Hydrochemistry And Irrigation Water Quality Of The Syr Darya, Aral Sea Basin, South Kazakhstan, Bagdat Satybaldiyev, Baimurat Ismailov, Nurbek Nurpeisov, Kairat Kenges, Daniel D. Snow, Arindam Malakar, Omirzhan Taukebayev, Bolat Uralbekov
Daugherty Water for Food Global Institute: Faculty Publications
New hydrochemical measurements from the Syr Darya provide insights into factors affecting the composition and quality of a major freshwater source replenishing the Aral Sea. This river is heavily used for power and irrigation and crosses territories of four Central Asia republics. It is intensely managed, draining several major tributaries, many reservoirs, and numerous irrigation distribution systems and canals. Analysis of seasonal changes in dissolved ion concentrations using geochemical diagrams, elemental ratios, statistical correlation, and equilibrium modeling allowed the characterization of mineral formation processes that control the dissolved chemical composition. Measured water hydrochemistry and composition type differs substantially from previous …
Application Of Screening In Rangeland Monitoring: Quantifying Early-Warning Signals Of State Transitions In Nebraska, Daniel S. Bauloye
Application Of Screening In Rangeland Monitoring: Quantifying Early-Warning Signals Of State Transitions In Nebraska, Daniel S. Bauloye
School of Natural Resources: Dissertations, Theses, and Student Research
Woody encroachment, desertification, and exotic annual grass invasion are regime shifts (i.e., state-transitions) with detrimental effects on ecosystem health and services in grasslands of the North American Great Plains. Traditional approaches to rangeland monitoring are capable of detecting regime shifts after they have already occurred (i.e., diagnosing them); however, proactive management requires earlier warning. Regime shift screening is a new approach to rangeland monitoring capable of providing earlier warning of regime shifts. Regime shift screening proposes assessing the presence, persistence, and non-stationarity of regime shift signals; however, no studies have systematically evaluated these characteristics in real-world landscapes. In this thesis, …
Physiological Distancing Affects Climate Change Through Spatial Differences, Janette Williams
Physiological Distancing Affects Climate Change Through Spatial Differences, Janette Williams
Department of Environmental Studies: Undergraduate Student Theses
Psychological distancing is best described as the human ability to separate ourselves socially, temporally, and spatial and use it to manipulate our perspectives. It is the belief that in order to perceive or understand the information, you have to be within a spatial range(Harvard Business Review,2015). Psychological distancing has been linked to climate change perspectives based on spatial differences. People who are closely affected by climate change and experience more are going to have more ideas and be proactive. The reduced distance by spatial differences correlated with perceptions of climate change. People who are farther from the coast and experience …
The Role Of Gender And Curiosity On Transformational Leadership: A Mixed-Methods Study, Brooke Colleen Mott
The Role Of Gender And Curiosity On Transformational Leadership: A Mixed-Methods Study, Brooke Colleen Mott
School of Natural Resources: Dissertations, Theses, and Student Research
Environmental leaders are tasked with finding innovative solutions to dynamic environmental challenges. Leaders must gain and use new knowledge and experiences that motivate resolving gaps in one’s knowledge (i.e., curiosity) and thereby find forward-thinking solutions. Although curiosity is an integral part of human existence, it may be experienced in various ways. Studies have shown that men and women may possess different leadership styles. Nevertheless, the influence of curiosity on leadership between genders has not been as readily explored. Women exhibit unique characteristics for successful leadership in many contexts, but they are often underrepresented in natural resource management overall. Characteristics of …
The Last Drought Frontier: Building A Drought Index For The State Of Alaska, Olivia Campbell
The Last Drought Frontier: Building A Drought Index For The State Of Alaska, Olivia Campbell
School of Natural Resources: Dissertations, Theses, and Student Research
Drought is characterized by periods of below average precipitation. There are five major types of drought recognized in the literature: meteorological, hydrological, agricultural, socioeconomic, and ecological. A relatively new concept in the drought literature is “snow drought.” A key part of the definition of drought is that it is not always accompanied by extreme heat. This means drought can occur even in cold climates, cold seasons, and higher latitudes and altitudes, like Alaska. Drought is a natural part of climate variability, but Alaska’s climate is changing faster than any other state in the United States. Alaska is no stranger to …
Optimal R&D Investment In The Management Of Invasive Species, William Haden Chomphosy, Dale T. Manning, Stephanie A. Shwiff, Stephan Weiler
Optimal R&D Investment In The Management Of Invasive Species, William Haden Chomphosy, Dale T. Manning, Stephanie A. Shwiff, Stephan Weiler
USDA Wildlife Services: Staff Publications
Invasive alien species (IAS) threaten world biodiversity, ecosystem services, and economic welfare. While existing literature has characterized the optimal control of an established IAS, it has not considered how research and development (R&D) into new removal methods or technologies can affect management decisions and costs over time. R&D can lower the costs of control in a management plan and creates an intertemporal trade-off between quick but costly control and gradual but cheaper removal over time. In this paper, we develop and solve a continuous time dynamic optimization model to study how investment in R&D influences the optimal control of an …
Correlation Between Fire And Preservation In The Pacific Northwest & Most Cost-Efficient Mitigationtactics, Liam Doherty-Herwitz
Correlation Between Fire And Preservation In The Pacific Northwest & Most Cost-Efficient Mitigationtactics, Liam Doherty-Herwitz
Department of Environmental Studies: Undergraduate Student Theses
This study was conducted entirely online with occasional help from advisors and editors on zoom meetings. I completed the research in Lincoln, Nebraska. A meta analysis of online data has been conducted to form the answers to my hypotheses and research questions. I used specific keywords and phrases in research databases, and search engines such as google scholar to point me towards the answers I was looking for. The keywords and phrases were split up into four different categories which are mitigation techniques, ecosystems, fire severity: PNW, and fire season: PNW. The reason the topics land preservation and fire science …
An Analysis Of Factors Affecting Municipal Biochar Implementation In Voluntary Carbon Markets, Jadon Basilevac
An Analysis Of Factors Affecting Municipal Biochar Implementation In Voluntary Carbon Markets, Jadon Basilevac
Department of Environmental Studies: Undergraduate Student Theses
This paper serves as a review article and incorporates elements of survey research in order to identify and address factors inhibiting biochar availability from municipal sequestration projects in voluntary carbon marketplaces. In determining which barriers exist, and devising strategies for solving them, this study can help to expand the role of biochar in mitigating emissions contributing to climate change, and encourage project developers to support municipal biochar projects that provide various co-benefits. To do so, this study addresses how the pyrolysis production process might be made more efficient, economically viable, and see improved public image, the various urban sectors to …
Observing Wildlife In Different Urban Environments, Colleen Ballinger
Observing Wildlife In Different Urban Environments, Colleen Ballinger
Department of Environmental Studies: Undergraduate Student Theses
My project was about comparing ecological communities in different locations. As many of us Natural Resource studiers know, urbanization has become a prime factor in ecosystems and landscapes of the modern world. Numerous studies from the Urban Ecology field have shown us that urbanization is on an unstable trajectory for the future (Wu 2014). My research will be to find out where and what species of wildlife live in varying levels of urbanization. This topic is important to me because of how impactful habitat loss is to wildlife. Habitat loss is the number one cause of wildlife death here in …
Recycling Attitudes And Behaviors Toward Single-Use Plastics At The University Of Nebraska-Lincoln, Jadyn Chasek
Recycling Attitudes And Behaviors Toward Single-Use Plastics At The University Of Nebraska-Lincoln, Jadyn Chasek
Department of Environmental Studies: Undergraduate Student Theses
Today, single-use plastics pose an issue in the world with pollution from improper disposal as well as from the manufacturing of single-use plastic products. There is a need for change, plastic products have begun to consume the planet and harm life on Earth. Many people look to college universities for an opportunity to change issues such as the overconsumption of single-use plastics. A college campus is the perfect environment to study what changes can be made to fix an issue as well as how to implement those changes. This study was conducted at the University of Nebraska-Lincoln, where the undergraduate …
Spatiotemporal Activity Patterns Of Red Foxes And Coyotes In Wilderness Park, Lincoln, Nebraska., Adam Carlson
Spatiotemporal Activity Patterns Of Red Foxes And Coyotes In Wilderness Park, Lincoln, Nebraska., Adam Carlson
Department of Environmental Studies: Undergraduate Student Theses
Wildlife species that share a landscape may vary their use of time, space, and resources, thereby enabling sympatry between species. Interspecific relationships among sympatric canids are often inferred through temporal and spatial activity patterns. Body size is an important influence on interspecific relationships, as it affects competition, access to prey, resources, and vulnerability to predation. Coyotes and red foxes are canids that differ in body size and occur sympatrically in Wilderness Park, which suggests that they interact and could imply competition. In and around Lincoln, the number of coyote sightings has increased in recent years, Although the ecology of both …
Perception Of Nature Based On Childhood Experiences, Kaitlyn Richards
Perception Of Nature Based On Childhood Experiences, Kaitlyn Richards
Department of Environmental Studies: Undergraduate Student Theses
It is essential that humans view themselves as a part of nature rather than viewing themselves as separate from it. Especially with issues on the rise such as climate change, habitat destruction, and the degradation of natural resources. Childhood experiences with nature are critical in developing pro-environmental behaviors (Duzenli, 2019). Pro-environmental behaviors are defined as attitudes and actions that focus on the improvement of environmental conditions, while also being vigilant of ways to reduce negative impacts on the environment (Tian, 2022).
State Of Utah Et Al. V Walsh Et Al., Ethan Halman Gonzalez
State Of Utah Et Al. V Walsh Et Al., Ethan Halman Gonzalez
Department of Environmental Studies: Undergraduate Student Theses
To expand upon that, the State of Utah et al. wants to show the Department of Labor’s “Prudence and Loyalty in Selecting Plan Investments and Exercising Shareholder Rights” Rule proposed in December 2022, is arbitrary and capricious under the Administrative Procedure Act (APA) and Employment Retirement Income Security Act of 1974 (ERISA). The suit argues that the Department of Labor (DOL) oversteps the APA—as under the APA, the Court “shall… hold unlawful and set aside agency action, findings, and conclusions” that are “in excess of statutory jurisdiction, authority, or limitations,” or “arbitrary capricious, an abuse of discretion, or otherwise not …
Student Perspectives Of Sustainable Transportation Use On A College Campus, Brynn Fuelberth
Student Perspectives Of Sustainable Transportation Use On A College Campus, Brynn Fuelberth
Department of Environmental Studies: Undergraduate Student Theses
As climate change grows in relevance in society, attention has often been turned to large universities to look at what solutions can help minimize the impacts contributing to the devastation. Sustainable transportation is an alternative that can help combat these issues. This study specifically focuses on what sustainable transportation looks like at the University of Nebraska-Lincoln (UNL), and what barriers and motivations are present in the undergraduate students’ eyes. This was investigated through an open-ended qualitative survey administered to the undergraduate population of the UNL. This study asks how students make their mode decisions in relation to sustainable transportation methods, …
Analyzing Sea Level Rise Adaptation & Mitigation Strategies In Louisiana And The Netherlands, Jonah Mcdowell
Analyzing Sea Level Rise Adaptation & Mitigation Strategies In Louisiana And The Netherlands, Jonah Mcdowell
Department of Environmental Studies: Undergraduate Student Theses
Sea level rise is an increasingly dangerous threat. As a byproduct of climate change, this is an issue that has the potential to impact countless people, animals, and ecosystems across the globe. As sea level rise continues to worsen, it is imperative that coastal communities develop their own strategies and plans to combat this problem. This study focuses on two areas, the state of Louisiana and the country of the Netherlands, and studies how they have responded to this problem. These locations were chosen because sea level rise is proportionally more severe at these two locations compared to other areas …
Analyzing The Effects Of Cold Frontal Passage On The Feeding Habits Of Micropterus Salmoides (Largemouth Bass), Ethan Lang
Department of Environmental Studies: Undergraduate Student Theses
For many decades, it has been theorized as to what happens to the feeding habits of largemouth bass (Micropterus Salmoides) when a significant short term weather change occurs. Here in the midwest and all throughout the United States cold front boundaries are a weather phenomenon that occur on a regular basis. They can occur on a very large or small scale and have a rapid effect on the weather locally. These cold front systems have been looked at as one of the main drivers to having an effect on the feeding habits of largemouth. However, up until this point, any …
Roots Of Passion In Environmental Unl Students, Shane Vrbicky
Roots Of Passion In Environmental Unl Students, Shane Vrbicky
Department of Environmental Studies: Undergraduate Student Theses
“Passion” is an elusive idea - a simple word invented by man - able to depict vastly different realities and meanings dependent entirely on the user. Highly influential in nature, the simple thought of a passion within human beings can evoke a wide spectrum of strong emotions from pure joy and satisfaction to utter desperation and dread. Sometimes people have never known a life without their passion, guided by a headstrong feeling towards a path they have always dreamed of. Sometimes people can never seem to find passion, not knowing where to look and yet constantly chasing after it. Sometimes …
The Decline Of Upland Birds In Nebraska: Maximizing Limited Habitat, Hunter Tesarek
The Decline Of Upland Birds In Nebraska: Maximizing Limited Habitat, Hunter Tesarek
Department of Environmental Studies: Undergraduate Student Theses
Ring-necked Pheasants were introduced into the United States around 150 years ago and since then have become an important species both culturally and economically. There population health is of growing concern as upland bird populations in much of the United States have been declining rapidly throughout the latter half of the last century. In Nebraska millions of acres have been transformed from habitat that benefits upland birds into row crop agriculture, mostly in the form of corn and soybeans. Rural Mail Carrier Surveys conducted for pheasants from 1960 through 2020 in comparison to change in acres harvested depict the relationship …
Place-Based Pedagogies In Post-Secondary Science Education: A Scoping Literature Review, Megan Swain
Place-Based Pedagogies In Post-Secondary Science Education: A Scoping Literature Review, Megan Swain
Department of Environmental Studies: Undergraduate Student Theses
How do we connect students to a class and how do educational professionals create those connections? What makes an educational experience memorable? How do we cultivate students who are passionate and engaged? These are all important questions in educational fields and ones that have increasing importance in a world of growing virtual education. This thesis aims to look deeper into one method, place-based education that attempts to answer some of these questions.
Place-based education (PBE) is a pedagogy that utilizes the local physical environment and community as an educational tool. Educators focus lessons on places, people, and things surrounding their …
Identifying A Consumer-Producer Agricultural Knowledge Gap, Aspen Rittgarn
Identifying A Consumer-Producer Agricultural Knowledge Gap, Aspen Rittgarn
Department of Environmental Studies: Undergraduate Student Theses
The purpose of this paper and online survey was to see if an agricultural knowledge gap between consumers and producers be found. Low agricultural literacy rates can lead to misconceptions of the agriculture industry, unhealthy food choices, environmentally unfriendly product choices, food waste, etc. The hypothesis for this thesis is that those born in the mid1960s to early 1980s (Generation X) will be the start of an increased knowledge gap. The survey was compiled of both qualitative and quantitative questions and questions were inspired by American Farm Bureau’s AITC Benchmarks. Responses were analyzed and the results revealed that my participants …
Evaluating Ecosystem Health Of The Salt Creek Basin Through Two-Eyed Seeing, Shelby Serritella
Evaluating Ecosystem Health Of The Salt Creek Basin Through Two-Eyed Seeing, Shelby Serritella
Department of Environmental Studies: Undergraduate Student Theses
Few instances of prior research into socio-ecological health have brought together both Indigenous Knowledge Systems and Western science, especially in Nebraska. This study attempts to fill this gap in Lancaster County, Nebraska by using “Two-Eyed Seeing”. This equitably combines both Indigenous Knowledge Systems (qualitative data), obtained through oral interviews with Indigenous community members, and Western science (quantitative data), obtained through USGS, UNL, and U.S. Drought Monitor databases, to assess ecosystem health. Changes to the Salt Creek Basin were collected and analyzed through this Two-Eyed Seeing framework. Results found that there are high levels of consensus between both knowledge systems regarding …