Natural Resources and Conservation Commons^™

Implementation Of The Trojan Sex Chromosome Approach In The San Juan River: Investigation And Validation Of Feminization Methods For Channel Catfish, Chad Teal

Funded Research Records

No abstract provided.

Data Repository For "The Influence Of Hydrologic And Salinity Conditions On Drought-Tolerant Great Salt Lake Wetland Plant Species" By Samantha Kurkowski And Karin Kettenring, Samantha Kurkowski

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This greenhouse experiment investigated the effects of salinity (3 levels) and hydrologic condition (5 levels),  on the cover and biomass of a single mix of 11 native drought- and salt-tolerant species.

Identifying Priorities To Guide Extension Water Quality Programming In Utah, Clare Entwistle, Sarah Erwin, Stephanie Vaughn

Outcomes and Impact Quarterly

Utah State University Extension water quality faculty conducted a statewide water quality needs assessment to identify priority contaminants and resource gaps. The results found that elevated nutrient levels and sedimentation were the top concerns where additional resources would be beneficial. In addition, insufficient funding for improvements and low public engagement were identified as key challenges in addressing water quality issues. Results revealed current unmet needs with regional variation to inform Extension resource allocation and programming.

Most Utahns Support Affirming Rights Of Great Salt Lake, Sarah A. Woodbury, Kirsten Vinyeta, Jessica D. Ulrich-Schad, Darren Parry

Utah People and Environment Poll (UPEP)

A combination of water diversions and climate change-related shifts have led to record low water levels and increasing salinity at Great Salt Lake (GSL) (1, 2).  Low water levels not only impact those directly dependent on the lake—brine shrimpers and migratory birds, for example—but also the millions of individuals living along the Wasatch Front. Increasing toxic dust levels from exposed lakebed and potential shifts to snowpack in the region are of primary concern. Children and marginalized communities are especially vulnerable to the respiratory health impacts of toxic dust (3, 4). According to the 2023 Utah People & Environment Poll (UPEP), …

Retaining The Herd: Habitat Restoration Efforts Increase Patch Retention Times In Mule Deer, Jack Rasmussen

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Across much of their range, and the State of Utah, mule deer (Odocoileus hemionus) populations have been declining. Declines in herd numbers can be attributed to alterations to historic habitats through the introduction of exotic annual grasses and the encroachment of pinyon-juniper forests on sagebrush ecosystems, changing resource availability. To combat habitat alterations, the Utah Department of Natural Resources has implemented various habitat restoration treatments through the Watershed Restoration Initiative , broadly to remove exotic species and decrease pinyon juniper woodland encroachment. We investigated how mule deer patch retention times differ on eight different habitat restoration treatment types during summer …

Energy Input-Output Meta-Analysis Reveals Algal Diesel Struggles To Break Even (Supplemental Information), Michelle Arnold

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1. Algal biofuels have been investigated as an alternative to traditional fossil fuels for transportation in the United States since the 1970s. Yet after five decades of development, scalability and implementation remain limited. To evaluate the state of progress, this study harmonized energy inputs and outputs across 39 papers, encompassing 508 observations on the production of algal biofuel energy return on energy investment (EROEI) in the United States. The analysis produced a mean EROEI of 1.01—essentially the break-even point—irrespective of system boundaries. This is lower than bioethanol (2.8) and far below oil (8.7). Life-cycle analysis results showed that hydrothermal liquefaction in …

Increasing Complexity Leads To Declining Productivity Of Innovation In The Algal Biofuel Industry (Supplemental Information), Michelle Arnold

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Liquid biofuels are widely promoted as renewable, lower-emission alternatives to fossil fuels. Yet despite their promise, this sector faces a critical constraint: a long-term decline in the productivity of innovation. This decline—measured by a decreasing number of patents per inventor—suggests that generating technological breakthroughs is becoming more difficult, expensive, and uncertain. As innovation becomes more resource-intensive, the feasibility of replacing petroleum with liquid biofuels grows more tenuous. This is especially problematic given the pre-existing technical disadvantages of biofuels, including their relatively low energy return on energy investment (EROEI) and energy density compared to fossil fuels. Our findings show that the …

Data Accompanying "Landscape Composition Surrounding Restoration Projects Modulates Use By Wildlife: A Case Study Of Mule Deer In Utah", Jaylin Solberg

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With mule deer (Odocoileus hemionus), hereafter, deer, populations in decline, wildlife managers have increased their efforts to improve factors that limit population growth. In the State of Utah (hereafter, Utah), these efforts have included habitat restoration which is expected to improve environmental conditions for deer. Some of these efforts include pinon-juniper removal, prescribed burning, and spraying of invasive plant species. Although previous work has demonstrated the local impacts of restoration on deer populations, it is unknown how the environmental conditions in the landscape surrounding restoration treatments may modify local restoration impacts. Identifying how both local and landscape-scale conditions influence deer …

Chemical Analyses Of Grass Samples, Johan Du Toit, Shantell Garrett

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Results of chemical analyses of grass samples collected in the foothills of the Henry Mountains, south-central Utah, in the fall of 2021.

Plant Biomass (Dry) Per Square Meter, Johan Du Toit, Shantell Garrett

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Results of plant biomass clippings (dry mass / square meter) conducted in the foothills of the Henry Mountains, south-central Utah, over 2012-2022.

Chemical Analyses Of Soil Samples, Johan Du Toit, Shantell Garrett

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Results of chemical analyses of soil collected in the foothills of the Henry Mountains, south-central Utah, in the fall of 2020.

Lagomorph Spotlight Survey Results, Johan Du Toit, Shantell Garrett

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Results of lagomorph spotlight surveys conducted in the foothills of the Henry Mountains, south-central Utah, over 2014-2022.

Reducing Residential Landscape Water Use In Utah: Technologies And Strategies, Maya Cottam, Kendall Becker, Katlyn Stemmler, Shital Poudyal, Wesley Crump, Lewis Kogan, Scott Hotaling

All Current Publications

Water conservation is a critical issue in Utah, and several actions are already underway to help lower residential landscape water use. Strategies include smart irrigation controllers, efficient sprinkler bodies and nozzles, drip irrigation systems, soil amendments that increase water-holding capacity, and drought-tolerant grass cultivars for lawns. While additional conservation efforts will be necessary to reach sustainable water management, statewide adoption of current programs can help reduce water use and loss.

Cutthroat Trout In Utah, Hope Northagen, Ethan Gilliam

All Current Publications

This fact sheet is intended to inform anglers, aquatic recreationalists, and backyard conservationists interested in learning about a Utah native species, current restoration steps, and how their actions can help professionals restore native cutthroat trout populations.

Shifting Frontiers: Understanding Species’ Abundance Range Shifts For Informed Conservation Strategies, T.J. Clark-Wolf

Funded Research Records

No abstract provided.

Developing Resilient Organic Dryland Wheat Systems In The Face Of Climate Change., Jennifer R. Reeve

Funded Research Records

No abstract provided.

Visionary Indigenous Training And Leadership For Natural Resources (Vital4nr), Peter D. Howe

Funded Research Records

No abstract provided.

Enhancing Monthly Streamflow Prediction Using Meteorological Factors And Machine Learning Models In The Upper Colorado River Basin, Saichand Thota

All Graduate Theses and Dissertations, Fall 2023 to Present

Understanding and predicting streamflow along river basins is vital for planning future developments and ensuring safety, especially with climate change challenges. Our study focused on forecasting streamflow at Lees Ferry, a key location along the Colorado River in the Upper Colorado River Basin. We employed four machine learning models - Random Forest Regression, Long short-term memory, Gated Recurrent Unit, and Seasonal Auto-Regressive Integrated Moving Average; and combined historical streamflow data with meteorological factors such as snow water equivalent, temperature, and precipitation. Our analysis spanned 30 years of data from 1991 to 2020.

Our findings revealed that the Random Forest Regression …

2024 Report To The Governor And Legislature On Utah's Land Water & Air, Janet Quinney Lawson Institute For Land, Water & Air

Reports

This report serves as a 2024 snapshot of key issues and concerns with Utah’s shared resources. It highlights a collection of data that is available to provide context to these issues and identifies areas where more study is needed. Addressing these challenges will enable Utah policymakers to make informed decisions for the future. Under the authorship of 52 researchers and with the support of 47 advisory board members, this report includes 6 chapters (Land, Water, Air, Forests and Rangelands, Bear Lake, and Metrics) that address the focus areas of the report.

Utahns' Perceptions Of Climate Change And Disaster Vulnerabilities, Mufti Nadimul Quamar Ahmed, Jennifer E. Givens, Peter D. Howe, Jessica D. Ulrich-Schad

Utah People and Environment Poll (UPEP)

Climate change increases the frequency and severity of extreme weather events, making people more vulnerable in a variety of ways^1-2. It is essential to determine if individuals believe they are susceptible to the effects of climate change in order to develop effective adaptation strategies.

Climate change has contributed to extreme weather occurrences in Utah in recent years. For instance, in the summer of 2022, there was a severe or extreme drought in all of Utah's counties³. Health effects of drought vary with intensity⁴ and can cause climate related deaths directly and indirectly, such as by …

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.

From Mountain Streams To Urban Rivers: An Assessment Of Microplastic Sources And Characteristics, Macy Gustavus

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Plastic products are produced and discarded at an alarming rate. Bottles, bags, toys, and clothing break down into tiny plastic pieces called microplastics, ranging in size from an eraser on the top of a pencil to smaller in size than a red blood cell. Microplastics are becoming so common in the environment that they travel in the atmosphere, rivers, and ocean currents in ways that are similar to other types of Earth Systems Cycles (i.e., the water cycle). In this study, we explored microplastic sources and sinks in a freshwater river system and how seasonal changes in discharge affect how …

Sheep Ingestive Behavior And Tannin Selection In Pampa Grassland And Feedlot, Marina Terra Braga

Green Canyon Environmental Research Area, Logan Utah

The Pampa grassland biome has high plant biodiversity, some with significant secondary compound concentrations such as tannins. Tannin inclusion in ruminant diets may improve meat quality and productivity. However, voluntary intake of this phenolic compound can be a challenge. This dissertation includes three studies within this context. The first study documented whether sheep consume tannin-rich Desmodium incanum (DI), the most common Pampa herbaceous legume species. The second study evaluated how forage tannin and protein concentration influenced sheep feedlot feed selection and the diet affects performance parameters. The third study evaluated sheep feeding behavior in a Pampa native pasture, and how …

Future Of Great Salt Lake Survey, Lisa W. Welsh, Joanna Endter-Wada, Karin M. Kettenring, Anna Mcentire

Reports

The Future of Great Salt Lake Survey was conducted in fall 2022 when state and global attention on Great Salt Lake was ramping up, following record lows of the elevation of lake water levels. In the survey, we asked Utahns their opinions on securing water for Great Salt Lake and focused on strategies that individuals, local communities, and the state of Utah could pursue. When it comes to how water is used and managed in Utah, there are multiple actors and institutions who all make decisions and have authority or ability to take different actions. While the state of …

Red Wolf Multispecies Justice Publication 2023, Eskar, Elizabeth Bennett, Finley Schad, Alex Baldwin, Oluwaseyifunmi Adejugbe, Mufti Nadimul Quamar Ahmed, Maisie Schad, Sadie Braddock, Azra Soyer, Melih Soyer, Anne-Laure Blanche, Zubair Barkat, Amol K, Sarah Ann Woodbury, Kirsten Vinyeta

Publications

Our understanding of multispecies justice is still solidifying. In spring 2023, a group of Utah State University undergraduate and graduate students attended a course by Dr.Kirsten Vinyeta on Multispecies Justice and Indigenous Approaches to the Environment. Throughout this course, we studied the works of scholars and writers from a variety of social locations and identities who challenge Western theoretical frameworks in social science.

This publication celebrates our intellectual struggle with this emerging field and opens a forum for conversations about justice for humans and additional species. This issue features various writings, reflections, and photos from students taking the Multispecies Justice …

Establishing A Volunteer Group To Assist In The Eradication Of Invasive Brown Treesnakes From Islan Dåno' (Cocos Island), Guam, Martin Kastner, Olympia Terral

Human–Wildlife Interactions

Islan Dåno’ (Cocos Island) is an islet of high conservation value located 2.5 km off Guam, USA, in the Western Pacific. It has long been considered free from invasive brown treesnakes (Boiga irregularis; BTS). A recently confirmed breeding population of BTS puts its wildlife populations, including U.S. Endangered Species Act-listed lizard and bird species, at risk. In response, we established Guam’s first volunteer group dedicated to BTS eradication, which we named Friends of Islan Dåno’. We provided training to local volunteer snake searchers and organized regular night searches for BTS on Islan Dåno’. We completed 25 searches between …

The Path To U.S. National Registration Of A Toxic Bait For The Control Of The Small Indian Mongoose, Carmen C. Antaky, Steven C. Hess, Emily W. Ruell, Israel L. Leinbach, Shane R. Siers, Robert T. Sugihara

Human–Wildlife Interactions

The small Indian mongoose (Urva auropunctata [syn. Herpestes auropunctatus]; mongoose) is a highly invasive species in its introduced range that negatively impacts ecosystems. Mongooses depredate native species, serve as a vector of disease posing a risk to human health, and cause sanitation issues in food processing facilities and public areas. Introduced for biocontrol in the late 1800s in Hawaiʻi and the Caribbean, mongooses currently have well-established populations across multiple islands in both island archipelagos and have invaded numerous other locations throughout the world. The concern of accidental introduction to mongoose-free islands, the difficulty in species detection, and the …

The Impact Of Feral Honey Bees On Endangered Seabirds In The Hawaiian Islands, André Francis Raine, Scott Driskill, Stephen Rossiter, Jennifer Rothe, Kyle Pias, Rachel Sprague, Alex Dutcher

Human–Wildlife Interactions

The ʻaʻo (Puffinus newellii; Newell’s shearwater) and ʻuaʻu (Pterodroma sandwichensis; Hawaiian petrel) are both endangered seabirds endemic to the Hawaiian Archipelago. For the last decade, multiple colonies on the islands of Kauaʻi and Lānaʻi have been the focus of intensive management (particularly predator control) and monitoring programs. Management has been effective at reducing the number of introduced mammalian predators recorded within colonies with a resultant increase in reproductive success rates for both seabird species. However, in recent years a new threat has emerged—feral honey bees (Apis mellifera; bees)—which were deliberately introduced to the Hawaiian …

Strategies To Secure Water For Great Salt Lake, Lisa W. Welsh, Joanna Endter-Wada, Karin M. Kettenring

Environment and Society Faculty Publications

Great Salt Lake is the largest saline lake in the Western Hemisphere (Wilsey et al. 2017) and plays an important role in Utah’s economy, environment, and ecology (Baxter and Butler 2020; Great Salt Lake Advisory Committee 2021). It has a long history of commercial and recreational activities including mineral production, brine shrimp harvesting, waterfowl hunting, boating, and sightseeing (Utah Department of Natural Resources 2013a, 2013b). The Great Salt Lake ecosystem supports over 10 million birds representing 338 species and acts as an important stopover for migratory birds between North and South America (Great Salt Lake Ecosystem Program; Wilsey et al. …

Colorado River Basin Water Accounts: 1-Page Summary, David E. Rosenberg

Civil and Environmental Engineering Faculty Publications

26 Colorado River managers and experts constructively improved basin water accounts as a framework to transition emergency reservoir operations into more sustainable, equitable, and adaptive water uses.