Physical Sciences and Mathematics Commons^™

Scientists And Activists Work To Save The Planet, Myriam G. Vidal Valero

Capstones

Climate change and human intervention in nature are affecting people, ecosystems and ways of living all over the world. This portfolio of environmental pieces showcases the dire consequences of not addressing these issues, how solutions can be reached and the challenges facing those who try to change things.

Eat Your Invasives: A Practical And Historical Analysis Of Foraging For Invasive Foods, Grace Hartman

Honors Projects

This paper discusses both the historical and modern role of foraging and why people may decide to forage, as well as barriers new foragers may face and how they can be overcome. Furthermore, the paper discusses how foraging for invasive species can be used as a method of conservation and how simple foraging can be encouraged for this reason.

A Long-Term Vision For An Ecologically Sound Platte River, Andrew J. Caven, Melissa M. Mosier, Kristal Stoner, Bill Taddicken, Brice Krohn, Ashley Gramza, Craig R. Allen, Mike Carter, Michelle Koch, Kirk D. Schroeder, Sarah Bailey, Rich Walters, Brian C. Chaffin, Erica Gnuse, Amy Jones, Kate Bird

Zea E-Books Collection

The Platte River extends about 310 mi (499 km) from North Platte, Nebraska, to its terminus at the Missouri River confluence near Plattsmouth, Nebraska. The Platte River Valley is a continentally significant ecosystem that serves as a major stopover for migratory waterbirds in the Central Flyway including the endangered Whooping Crane (Grus americana) and >1 million Sandhill Cranes (Antigone canadensis) at the peak of spring migration. However, the Platte River Valley also supports a great diversity of avifauna including grassland breeding birds, native stream fish, vascular plants, herpetofauna, mammals, pollinators, and aquatic macroinvertebrates. Despite ongoing conservation …

Understanding Conservation Specialists’ Role In The Adoption Of Precision Agriculture In Nebraska, Morgan L. Register

School of Natural Resources: Dissertations, Theses, and Student Research

There is a complex issue by the need for strategic development of agricultural lands to ensure we can feed a growing world, while simultaneously reducing impacts on our natural resources such as water pollution from runoff, soil degradation, and habitat fragmentation. To address these growing concerns, researchers are looking for ways to optimize both agricultural production and natural resource conservation. Precision conservation was developed to ensure sustainable ecosystems for future generations. Our research evaluates conservation specialists’ ability to clearly articulate how precision conservation can help agricultural producers feed a growing world while simultaneously reducing impacts on our natural resources, I …

Rock Climbing And Conservation In Land Management: Can They Coexist?, Marissa Heller

Geography ETDs

As participation in outdoor recreation is growing in the U.S., a dilemma is presented for conservation planners and land area managers who must manage the increasing demand for recreation while simultaneously working to protect species. Rock climbers and other outdoor recreationalists have asserted that a relationship exists between recreation and the conservation of public lands. However, mounting evidence suggests that rock climbing continues to cause a multitude of negative impacts to ecosystems. Here, I investigate the extent to which land management practices allow for rock climbing and conservation to coexist, and how it is that well developed plans protect ecologically …

Defining The Current Distribution Of The Imperiled Black-Spotted Newt Across South Texas, Usa, Padraic S. Robinson, Drew R. Davis, Sean M. Collins, Richard J. Kline

School of Earth, Environmental, and Marine Sciences Faculty Publications and Presentations

The Black-spotted Newt (Notophthalmus meridionalis) is a chronically understudied salamander species, with many aspects of its natural history, ecology, and distribution poorly known. Previous studies using traditional methodologies have had limited success documenting N. meridionalis on the landscape, detecting individuals at 6% (7 of 114) and 1% (2 of 221) of sites surveyed. A novel environmental DNA (eDNA) assay was designed and implemented with the goals of assessing the current distribution of N. meridionalis across south Texas, USA, and better understanding the conditions for positive eDNA detections. We conducted eDNA sampling and traditional surveys at 80 sites throughout …

Monitoring Whitebark Pine Stand Health In The Central Washington Cascades, Nancy H. Parra, Teresa J. Lorenz, Taza D. Schaming, Alison Scoville

Student Published Works

Whitebark pine (Pinus albicaulis) plays a vital role in colonizing newly disturbed areas, providing shade for other tree species to germinate, and supplying food for a variety of birds and mammals, such as Clark’s Nutcrackers (Nucifraga columbiana) and grizzly bears (Ursus arctos horribilis). Decline of whitebark pine populations has been attributed to several factors, including white pine blister rust (Cronartium ribicola), mountain pine beetle (Dendroctonus ponderosae) outbreaks, and fire exclusion. In 2009, the U.S. Forest Service began to install permanent plots in whitebark pine stands in Washington and Oregon as …

The Importance Of Understanding And Developing Identification Techniques In Wildlife Crime, Savannah Nguyen

D.U.Quark

Wildlife crime continues to grow annually and globally, impacting several species and ecosystems. New advancements of technologies and techniques can track criminals and aid the affected victims. Highlighting the complexity of conservation and the development of identification techniques helps tackle this widespread dilemma. New developing techniques in wildlife forensics can differentiate an animal between wild and poached to pave the way for further advancement in understanding wildlife crimes. Hence, though the wildlife forensics field is still new, emphasizing the need for intricate identification techniques can help save threatened species.

Results Of The 2022 Vermont Farmer Conservation & Payment For Ecosystem Services Survey. Vermont Payment For Ecosystem Services Technical Research Report #3a, Alissa C. White

Reports and Policy Briefs

This survey was commissioned by the Vermont Soil Health and Payment for Ecosystem Services Working Group (VT PES Working Group) to gather farmer input on the development of payment for ecosystem services (PES) in Vermont for agriculture. In particular, the survey was intended to help set appropriate levels of compensation for participation in a soil health PES program, although additional information was gathered in the survey to inform the development of a new incentive program. The VT PES Working Group has explored the potential for a performance-based soil health PES program that would compensate farmers on the basis of environmental …

Ecosystem Connectivity For Livable Cities: A Connectivity Benefits Framework For Urban Planning, Carole Hardy, Catherine De Rivera, Leslie Bliss-Ketchum, Eric P. Butler, Sahan Dissanayake, Dorothy A. Horn, Ben Huffine, Amanda M. Temple, Michael Vermeulen, Hailey Wallace, Jennifer Michelle Karps

Environmental Science and Management Faculty Publications and Presentations

Urbanization disrupts landscapes and ecosystem functions, which poses threats to biodiversity, social systems, and human health, particularly among vulnerable populations. Urban land-use planners are faced with competing demands for housing, safety, transportation, and economic development and often lack tools to integrate these with protecting environmental functions. We identify three major barriers to integrating the benefits that flow with connected, functioning ecosystems into land-use planning. The lack of a shared language among planners and stakeholders poses a barrier to the restoration and preservation of ecological features. Methods of incorporating the benefits from connectivity are not standardized because values are not readily …

Factors Influencing Conservation Knowledge: A Survey Of Residents In The United States, Samantha Helgeson, Amanda Fasching, Ashley Kneemueller, Anna Sher

DU Undergraduate Research Journal Archive

Basic principles have been established for visitors of national and state parks, but some visitors may be more aware of conservation practices than others. To understand visitor awareness, this study investigated three factors that influence the general public’s understanding of the Leave No Trace (LNT) conservation ethic: natural areas visitation, state of residence, and media consumption. Each of the factors showed statistically significant impacts on awareness of LNT, supporting our hypotheses that this knowledge will increase with a higher frequency of park visits and media consumption, and that region of residence will also impact LNT knowledge.

Quantifying The Economic Impact Of Conservation Policy Changes Utilizing Precision Agriculture Tools, Kyle Stanley Watkins

Theses and Dissertations

The United States Farm Bill is a multi-billion-dollar federal legislation reenacted every five years to provide funding towards crop protection, nutrition, environmental protection, and other important focuses. The largest conservation program within the Farm Bill is the Conservation Reserve Program, which encompasses many conservation practices such as CP-33: habitat buffers for upland birds. Conservation implementation through the Farm Bill relies on voluntary producer enrollment in exchange for a rental fee to not farm enrolled land for a set time. I used yield data collected across six years from 36 agricultural fields in Humphreys and Holmes counties, Mississippi, USA, and a …

Multi-Criteria Evaluation Model For Classifying Marginal Cropland In Nebraska Using Historical Crop Yield And Biophysical Characteristics, Andrew Laws

School of Natural Resources: Dissertations, Theses, and Student Research

Marginal cropland is suboptimal due to historically low and variable productivity and limiting biophysical characteristics. To support future agricultural management and policy decisions in Nebraska, U.S.A, it is important to understand where cropland is marginal for its two most economically important crops: corn (Zea mays) and soybean (Glycine max). As corn and soybean are frequently planted in a crop rotation, it is important to consider if there is a relationship with cropland marginality. Based on the current literature, there exists a need for a flexible yet robust methodology for identifying marginal land at different scales, which …

Using Ai To Examine Nocturnal Moth Pollination, Conor Moriarty

Biological Sciences Undergraduate Honors Theses

The importance of insect-mediated agriculture cannot be understated especially in the wake of pollinator population declines. Most research of insect-mediated pollination is focused on diurnal pollinators like the honeybee (Apis mellifera). Deepening our understanding of how other pollinators, such as nocturnal pollinators, can benefit agriculture and ecosystems will be very important as honeybee populations decline. I explored nocturnal moth interactions with flowering apple flowers during their pollination season to better understand how these nocturnal pollinators interact with the plants. To accomplish this, I used a University of Arkansas farm area with a dedicated apple orchard. I gathered my raw data …

Zoo Education Efficacy In The Context Of The Modern-Day Zoo: A Study Of Aza-Accredited Zoos And Education Models, Taylor L. Ruscitti

Honors Scholars Collaborative Projects

Zoos have become a built-in component of society and play many roles. One of the roles includes being facilitators of education. Education serves to increase the positive public perception of zoos and works to continue to gain funds and support for a zoo’s overall purpose. Through a literature review and analysis, this thesis explores the modern-day context of zoos and analyzes how education can drive the zoo’s mission. The focus will be on Association of Zoos and Aquariums (AZA) and European Association of Zoos and Aquariums (EAZA) accredited zoos. While many other facilities that house an array of animals, AZA …

Leveraging Land Easements For Grassland Bird Habitat Conservation, Amy N. Marigliano, Hayden E. Dubniczki, Sarah W. Westrick

Student Publications

In addressing the decline of North American grassland bird populations, it is important to consider the various interdisciplinary approaches that can be employed in their conservation. OECMs, or “other effective area-based conservation measures” encompass a wide array of strategies which can be leveraged to conserve natural landscapes and species. Land easements implemented by the Land Conservancy of Adams County (LCAC) are an example of one such strategy. The LCAC seeks primarily to preserve the rural character of Adams County but has more recently turned their focus toward environmental conservation. In partnering with the Land Conservancy, this case study aimed to …

Transdisciplinary Environmental Work: An Evaluation Of Transdisciplinarity In The Field Of Environmental Science And Its Relevance To South Carolina Conservation Efforts In Lake Wateree And The Catawba Indian Reservation, Olivia Mn Shugart

Senior Theses

Transdisciplinarity describes the integration of knowledge and exchange of ideas across diverse academic disciplines, public stakeholders, and decision-makers. In this paper, I discuss the relevance of transdisciplinarity to the environmental field and offer ways in which its principles could be employed to enhance current South Carolina conservation efforts. I advocate for transdisciplinary work through analyzing existing discourse on the value of transdisciplinary research to the environmental field, and I present some of the challenges associated with this mass integration of knowledge. Finally, I describe three models of transdisciplinary research that have been proposed by scholars to address some of these …

All That Breathes, Sheila J. Nayar

Journal of Religion & Film

This is a film review of All That Breathes (2022), directed by Shaunak Sen.

2022 Gray Wolf Questions And Answers, United States Fish And Wildlife Service

United States Fish and Wildlife: Staff Publications

2022 Gray Wolf Questions and Answers

What does the February 10, 2022, ruling mean?

How does this ruling affect wolves in the Northern Rocky Mountains?

When does the court decision to vacate the delisting rule go into effect?

What is the legal status of gray wolves as of this ruling?

Is the Service continuing its status review of wolves in the western United States?

Is emergency listing an option for the Northern Rocky Mountain population?

Are wolf hunts going to stop as a result of the court decision?

How does this ruling affect wolves in Yellowstone National Park?

Where can …

Investigating The Effects Of Climate Change On The Phenology Of Achillea Millefolium, Aquilegia Coerulea, And Penstemon Cyanocaulis, Hannah O’Toole, Kailey Hicks, Lisa Long, Jackson Garske, Anna Sher

DU Undergraduate Research Journal Archive

As the effects of climate change are starting to unearth themselves, the impacts can be observed by tracking the patterns of cyclical natural phenomena also known as phenology, and monitoring how they have changed over time. These cycles are at the crux of making ecosystems viable for their local biodiversity, and understanding the ongoing change allows for further understanding of the ecosystem’s change over time. In this study, we look at the ordinal flowering dates of the Achillea millefolium, Aquilegia coerulea, and Penstemon cyanocaulis over the past century. Our data give insight into how warmer temperatures occurring earlier in …

A Systematic Map Of Human-Carnivore Coexistence, Cassandre C. Venumière-Lefebvre, Stewart W. Breck, Kevin R. Crooks

USDA Wildlife Services: Staff Publications

Carnivore populations globally have largely declined, and coexistence, where humans and carnivores share landscapes, plays a crucial role in carnivore conservation. However, the term “coexistence” is often used in scientific and popular literature without being clearly defined. Herein, we provide a global perspective on what coexistence is and how it is studied. We conducted a systematic map of 366 articles published between 1987 and 2020 to characterize human-carnivore coexistence literature according to coexistence definitions, temporal trends, geographic and taxonomic focus, and four thematic aspects of coexistence: carnivore ecology, human endeavors, social conflict and human-carnivore conflict. We used chi-squared tests and …

The Diffusion Of A Discipline: Examining Social Marketing's Institutionalization Within Environmental Contexts, Liz Foote

Antioch University Full-Text Dissertations & Theses

As a social change discipline, social marketing has demonstrated its effectiveness in addressing many types of wicked problems. However, despite its utility in environmental contexts, it is neither well known nor widespread in its uptake in these settings. This study’s purpose is to reveal opportunities to drive the adoption, implementation, and diffusion (“institutionalization”) of social marketing within the domains of environmental sustainability and natural resource conservation. This research considers the use of social marketing as an innovative practice within a diffusion of innovations framework and uses a systems lens to examine early adopter social marketing professionals and the institutional contexts …

Regenerative Agriculture Effects On Invertebrate And Bird Communities And Insect-Provided Ecosystem Services, Alex Michels

Electronic Theses and Dissertations

Conventional agricultural practices can have unintended consequences on the environment and wildlife. Insects and birds are declining at rapid rates around the world, and the current conventional agricultural paradigm is a major driver through habitat loss and the intensification of production. Invertebrates in agroecosystems provide services to both farmers and the rest of society. Regenerative systems may promote the functioning of an agroecosystem by influencing invertebrate abundance, diversity, and ecosystem services and mitigate bird and insect declines through conservation practices that increase soil health, reduce disturbances, and increase biological diversity. Here I address knowledge gaps of the effects of regenerative …

Detection Of Endangered Fish In Dianchi Lake, Kunming, China, Using Edna And Traditional Fishing, Kai Zhang

Electronic Theses and Dissertations

Dianchi Lake, Yunnan, China is a eutrophic plateau lake. Many native fish species in the lake are currently endangered or extinct due to a variety of stressors. Community surveys are important for ecological management and protection, though efforts are hampered by low abundance of some species. The goal of this thesis was to understand the community structure and distribution of fish in Dianchi Lake and to detect Sinocyclocheilus grahami, a critically endangered species endemic to the lake, using both traditional netting methods and environmental DNA. Using traditional netting and trapping, I found that the fish community of …