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Aerostructural Predictions Combining Fenics And A Viscous Vortex Particle Method, Ryan Anderson, Andrew Ning, Ru Xiang, Sebastiaan P. C. Van Schie, Mark Sperry, Darshan Sarojini, David Kamensky, John T. Hwang Jan 2023

Aerostructural Predictions Combining Fenics And A Viscous Vortex Particle Method, Ryan Anderson, Andrew Ning, Ru Xiang, Sebastiaan P. C. Van Schie, Mark Sperry, Darshan Sarojini, David Kamensky, John T. Hwang

Faculty Publications

Electric Vertical Takeoff and Landing (eVTOL) aircraft experience complex, unsteady aerodynamic interactions between rotors, wings, and fuselage that can make design difficult. We introduce a new framework for predicting aerostructural interactions. Specifically, we demonstrate the coupling of a finite element solver with Reissner-Mindlin shell theory for computing deflections and a viscous vortex particle for capturing wakes. We perform convergence studies of the aerodynamics and the coupled aerostructural model. Finally, we share some preliminary results of the dynamic aeroelastic response of Uber’s eCRM-002 main wing, and share some qualitative observations.

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Isogeometric Boundary-Conforming Body-In-White Crash Model Construction, Analysis, And Comparison With Fem Model, Kendrick M. Shepherd Jan 2023

Isogeometric Boundary-Conforming Body-In-White Crash Model Construction, Analysis, And Comparison With Fem Model, Kendrick M. Shepherd

Faculty Publications

In this paper, we discuss model generation to rebuild the body-in-white of a 1996 Dodge Neon finite element model into a isogeometric conforming analysis-suitable crash model. We then perform the first known boundary-fit isogeometric body-in-white crash analysis of the vehicle and compare results achieved by traditional finite element methods. Results indicate the value and potential of high-order meshes in analysis.

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Ecological-Niche Modeling Reveals Current Opportunities For Agave Dryland Farming In Sonora, Mexico And Arizona, Usa, Hector G. Ortiz-Cano, Robert Hadfield, Teresa Gomez, Kevin Hultine, Ricardo Mata-Gonzalez, Steven L. Petersen, Neil C. Hansen, Michael T. Searcy, Jason Stetler, Teodoro Cervantes-Mendivil, David Burchfield, Pilman Park, J. Ryan Stewart Jan 2023

Ecological-Niche Modeling Reveals Current Opportunities For Agave Dryland Farming In Sonora, Mexico And Arizona, Usa, Hector G. Ortiz-Cano, Robert Hadfield, Teresa Gomez, Kevin Hultine, Ricardo Mata-Gonzalez, Steven L. Petersen, Neil C. Hansen, Michael T. Searcy, Jason Stetler, Teodoro Cervantes-Mendivil, David Burchfield, Pilman Park, J. Ryan Stewart

Faculty Publications

For centuries, humans occupying arid regions of North America have maintained an intricate relationship with Agave (Agavoideae, Asparagaceae). Today Agave cultivation, primarily for beverage production, provides an economic engine for rural communities throughout Mexico. Among known dryland-farming methods, the use of rock piles and cattle-grazed areas stand out as promising approaches for Agave cultivation. Identifying new cultivation areas to apply these approaches in Arizona, USA and Sonora, Mexico warrants a geographic assessment of areas outside the known ranges of rock piles and grasslands. The objective of this study was to predict areas for dryland-farming of Agave and develop models to …

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Triangular Fin Array Passively Actuated By Bimetallic Coils For Cubesat Thermal Control, Josh Cannon, Rydge B. Mulford, Brian D. Iverson Jan 2023

Triangular Fin Array Passively Actuated By Bimetallic Coils For Cubesat Thermal Control, Josh Cannon, Rydge B. Mulford, Brian D. Iverson

Faculty Publications

CubeSat thermal control can be especially demanding due to volume and size constraints, high power dissipation per unit surface area, and highly variable internal and external heat loads. As such, CubeSat developers must rely on thermal control systems that meet the specific requirements of their mission and environmental conditions. Deployable radiators enable satellites to increase their radiative surface area and to reveal highly emissive surfaces during times when increased heat rejection is desired. In colder conditions, when decreased heat loss is preferable, the radiators can be stowed. Passive thermal control systems are unpowered and can increase system reliability by not …

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Anyone Can Make A Religious Object: Undoing Spirituality And Contemporary Art, Mark Graham, Clark Goldsberry, Isaac Calvert Jan 2023

Anyone Can Make A Religious Object: Undoing Spirituality And Contemporary Art, Mark Graham, Clark Goldsberry, Isaac Calvert

Faculty Publications

The spiritual dimensions of art and education have been explored for their potential to offer different ways of understanding or representing knowledge and their potential to inspire transcendence or cultivate wholeness. This article examines connections between transcendent or sacred territories of human existence, teaching, and contemporary art. Experiences of walking in the Himalayan mountains with Tibetan Buddhist monks, conversing with rabbis in Jerusalem, and teaching in state school classrooms are used to illustrate connections between education, spirituality, religion, and contemporary art. We seek to understand how the spiritual dimensions of education and contemporary art could be understood through the lenses …

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Land Prices And The Development Process, Henry J. Munneke, C. F. Sirmans, Barrett Slade Jan 2023

Land Prices And The Development Process, Henry J. Munneke, C. F. Sirmans, Barrett Slade

Faculty Publications

As lot area increases, it is commonly believed that land prices will increase at a nonconstant rate. In the case where the land price-area curve increases at a decreasing rate with respect to parcel area, it is believed the cost of subdividing land is the driving factor behind the concavity. This paper uses a unique data set to explore how the area elasticity of price changes over the development cycle as land moves from raw land to finished lots. The results show the area elasticity of price increases as parcels of land move through the phases of development. The results …

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Barriers To A Cybersecurity Career: Analysis Across Career Stage And Gender, Justin Scott Giboney, Bonnie Brinton Anderson, Geoffrey A. Wright, Shayna Oh, Quincy Taylor, Megan Warren, Kylie Johnson Jan 2023

Barriers To A Cybersecurity Career: Analysis Across Career Stage And Gender, Justin Scott Giboney, Bonnie Brinton Anderson, Geoffrey A. Wright, Shayna Oh, Quincy Taylor, Megan Warren, Kylie Johnson

Faculty Publications

The demand for cybersecurity professionals is high—especially for women. Efforts to attract women to cybersecurity careers are not meeting goals of equal representation. Researchers have not yet identified a theoretical rationale for the differences. To provide a theoretical rationale, we investigate barriers to a cybersecurity career based on career stages defined by Super (1957) and gender. Concerns about a cybersecurity career differ between girls, young adult women, and mid-career women. Girls feel an un- awareness of opportunity and requisite training, whereas adult women are concerned that they will be undervalued in a male-dominated field, and mid-career women are concerned about …

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Measuring State And Trait Attention Control Using Mouse Movements, David W. Wilson, Jeffrey Jenkins, J. S. Valacich Jan 2023

Measuring State And Trait Attention Control Using Mouse Movements, David W. Wilson, Jeffrey Jenkins, J. S. Valacich

Faculty Publications

Attention is a scarce resource in an increasingly distracting world. Although computing devices might well be blamed for much of the distraction we experience, these devices also afford an opportunity for feedback and improvement, as seen in a variety of contexts. This paper provides initial evidence that mouse movement data can be used to measure users’ attention control. Attention control refers to the ability to maintain top-down attention to goal-relevant stimuli and resist the distracting influence of irrelevant stimuli competing for attention. During a controlled experiment with conditions of varying levels of distraction, we captured participants’ mouse movements to determine …

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Human Or Ai? Using Digital Behavior To Verify Essay Authorship, David W. Wilson, Parker Burnett, Joseph S. Valacich, Jeffrey L. Jenkins Jan 2023

Human Or Ai? Using Digital Behavior To Verify Essay Authorship, David W. Wilson, Parker Burnett, Joseph S. Valacich, Jeffrey L. Jenkins

Faculty Publications

Large language models (LLMs) such as OpenAI's GPT-4 have transformed natural language processing with their ability to understand context and generate human-like text. This has led to considerable debate, especially in the education sector, where LLMs can enhance learning but also pose challenges to academic integrity. Detecting AIgenerated content (AIGC) is difficult, as existing methods struggle to keep pace with advancements in generation technology. This research proposes a novel approach to AIGC detection in short essays, using digital behavior capture and follow-up questioning to verify text authorship. We executed a controlled experiment as an initial evaluation to test the prototype …

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Digital Learning Transformation In Higher Education: International Cases Of University Efforts To Evaluate And Improve Blended Teaching Readiness, Charles R. Graham, Ganbat Danaa, Tserenchimed Purevsuren, Adriana Martínez, Cinthia Bittencourt Spricigo, Barbara Maria Camilotti, Tserenkhand Batsukh Jan 2023

Digital Learning Transformation In Higher Education: International Cases Of University Efforts To Evaluate And Improve Blended Teaching Readiness, Charles R. Graham, Ganbat Danaa, Tserenchimed Purevsuren, Adriana Martínez, Cinthia Bittencourt Spricigo, Barbara Maria Camilotti, Tserenkhand Batsukh

Faculty Publications

The global pandemic of 2019 brought heightened awareness to institutions of higher education of the need to engage in a digital transformation that extends beyond university business operations to the pedagogy of the classroom. This paper is a case study that explores three international cases of universities in Colombia, Brazil, and Mongolia that are at different stages along the path of a digital pedagogical transformation. This article tells each story, including (1) what is driving the local need to engage in digital transformation, (2) what the major challenges and barriers are to achieving a transformation, and (3) what efforts are …

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Understanding The Role Of Online Teaching Assistants In Student Engagement, Sara H. Tuiloma, Charles R. Graham Jan 2023

Understanding The Role Of Online Teaching Assistants In Student Engagement, Sara H. Tuiloma, Charles R. Graham

Faculty Publications

In this paper, we examine how online teaching assistants (OLTAs) interact with students in terms of affective, behavioral, and cognitive support and the influence of OLTA training on these interactions. Through a thematic network analysis, using a tracking instrument and semi-structured interviews with 10 OLTAs, we examined how online university students are supported based on the quantity and quality of interactions with OLTAs, and how training contributes to interactions. Our research addressed two key questions: (1) How do OLTAs support learners in the quantity and quality of interactions? and (2) How does OLTA training around affective and behavioral support influence …

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Improving Psychological Well-Being Of Young Adults By Conducting Family History Research At A Religious University, Barry M. Lunt, Kelly R. Summers, David A. Wood Jan 2023

Improving Psychological Well-Being Of Young Adults By Conducting Family History Research At A Religious University, Barry M. Lunt, Kelly R. Summers, David A. Wood

Faculty Publications

Prior research suggests that knowledge of one’s family is correlated with, but does not produce, psychological well-being. We test this conjecture, by examining whether participating in family history research (i.e., genealogical research) is associated with psychological well-being above and beyond the effects of knowledge of one’s family, documented in prior research. To test this, we examine whether students enrolled in a university level family history course, improve in family identification, self-esteem, anxiety, resilience, and locus of control more than a control sample. For students enrolled in the family history course, we find an increase in family identification, which in turn …

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Key Success Factors For “Real World” Projects: A Principal- Agency Theory Perspective, Degan Kettles, Dan Mazzola, Mary Sumner, Mahesh Raisinghani Jan 2023

Key Success Factors For “Real World” Projects: A Principal- Agency Theory Perspective, Degan Kettles, Dan Mazzola, Mary Sumner, Mahesh Raisinghani

Faculty Publications

“Real world” projects are an important component of MIS academic programs. These “real world” projects provide students with problem-based learning opportunities which enable them to address “real world” problems and opportunities. The purpose of this research-in-progress is to determine the key success factors for “real world” projects. The concept of Principal-Agency Theory provides a theoretical lens for understanding these success factors from the viewpoint of students, faculty, and industry sponsors. The SIM academic research team will collect data from project teams across ten universities and for over 250 projects. Having multiple perspectives will contribute to an understanding of how to …

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Charting A Course To The Top: Insights From The Fortune 500 Cios And How They Differ From Other C-Suite Executives, Benjamin Richardson, Degan Kettles, Daniel Mazzola Jan 2023

Charting A Course To The Top: Insights From The Fortune 500 Cios And How They Differ From Other C-Suite Executives, Benjamin Richardson, Degan Kettles, Daniel Mazzola

Faculty Publications

No abstract provided.

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Effects Of Beaver Dams On Stream And Riparian Conditions On Public Lands In The United States’ Inland Northwest, Brett B. Roper Dec 2022

Effects Of Beaver Dams On Stream And Riparian Conditions On Public Lands In The United States’ Inland Northwest, Brett B. Roper

Western North American Naturalist

A before-after control-impact (BACI) design was used to simultaneously evaluate how stream habitat, macroinvertebrate communities, stream temperatures, and riparian conditions responded to beavers building dams within a stream reach. Summarized conditions describing beaver-dammed and undammed stream reaches suggested that 13 of the 18 evaluated metrics differed. After accounting for beavers’ selection of lower-gradient stream reaches with less forested cover, the number of stream and riparian metrics that differed significantly dropped to 5. Beaver dams increased pool area and depth, despite failing to increase the frequency of wood >10 cm in diameter. This suggests that beavers build dams utilizing pieces of …

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Injuries And Abnormalities Of The Southwestern Pond Turtle (Actinemys Pallida) In The Mojave River Of California, Kristy L. Cummings, Jeffrey E. Lovich, Shellie R. Puffer, Sarah Greely, Christopher D. Otahal, James Gannon Dec 2022

Injuries And Abnormalities Of The Southwestern Pond Turtle (Actinemys Pallida) In The Mojave River Of California, Kristy L. Cummings, Jeffrey E. Lovich, Shellie R. Puffer, Sarah Greely, Christopher D. Otahal, James Gannon

Western North American Naturalist

The southwestern pond turtle (Actinemys pallida) is a semiaquatic turtle that occasionally spends time on land to bask, oviposit, make intermittent overland movements, and overwinter in terrestrial locations. Use of both aquatic and terrestrial environments exposes semiaquatic turtles to increased risk of injury or mortality from floods, predation attempts, and other environmental hazards (e.g., human activities such as vehicle strikes, etc.). We collected injury and morphological abnormality data from adult turtles at 3 study sites along the length of the Mojave River in San Bernardino County, California: 1 site on the upper half of the Mojave River (hereafter …

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Surface Modification Of 3d Printed Microfluidic Devices For Controlled Wetting In Two-Phase Flow, Chandler A. Warr, Nicole G. Crawford, Gregory P. Nordin, William G. Pitt Dec 2022

Surface Modification Of 3d Printed Microfluidic Devices For Controlled Wetting In Two-Phase Flow, Chandler A. Warr, Nicole G. Crawford, Gregory P. Nordin, William G. Pitt

Faculty Publications

Microfluidic devices (MFDs) printed in 3-D geometry using digital light projection to polymerize monomers often have surfaces that are not as hydrophobic as MFDs made from polydimethylsiloxane. Droplet microfluidics in these types of devices are subject to droplet adhesion and aqueous spreading on less hydrophobic MFD surfaces. We have developed a post-processing technique using hydrophobic monomers that renders the surfaces of these devices much more hydrophobic. The technique is fast and easy, and involves flowing monomer without initiator into the channels and then exposing the entire device to UV light that generates radicals from the initiator molecules remaining in the …

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The Unexpected Effectiveness Of Strategically Sparse Cooperation, Neal D. Munson Dec 2022

The Unexpected Effectiveness Of Strategically Sparse Cooperation, Neal D. Munson

Theses and Dissertations

In this work, we will show a result derived from a class of economically inspired multi-agent differential games. The result shows that in the class of games we present, only a sparse cooperation structure is needed by the agents to achieve an outcome that is in a particular sense "optimal". One may expect that to achieve such an outcome, a centralized control or full cooperation would be necessary; it is not. Not only is it not necessary - it is never necessary. We precisely characterize what kind of cooperation IS necessary to attain that kind of optimality. Only the sparsest …

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Short-Range Magnetic Correlations, Spontaneous Magnetovolume Effect, And Local Distortion In Magnetic Semiconductor Mnte, Raju Baral Dec 2022

Short-Range Magnetic Correlations, Spontaneous Magnetovolume Effect, And Local Distortion In Magnetic Semiconductor Mnte, Raju Baral

Theses and Dissertations

The antiferromagnetic semiconductor MnTe has recently attracted significant interest as a potential high-performance thermoelectric material. Its promising thermoelectric properties are due in large part to short-range magnetic correlations in the paramagnetic state, which enhance the thermopower through the paramagnon drag effect. Using magnetic pair distribution function (mPDF) analysis of neutron total scattering data, we present a detailed, real-space picture of the short-range magnetic correlation in MnTe, offering a deeper view into the paramagnon drag effect and the nature of the correlated paramagnetic state. We confirm the presence of nanometer-scale antiferromagnetic correlations far into the paramagnetic state, show the evolution of …

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Quantifying Volatile Fatty Acid Concentrations During The Pretreatment And Anaerobic Digestion Process, Sascha Boutelle Dec 2022

Quantifying Volatile Fatty Acid Concentrations During The Pretreatment And Anaerobic Digestion Process, Sascha Boutelle

Theses and Dissertations

Producing renewable energy from biomass or from the wastewater treatment process has gained momentum in the past 20 years. Anaerobic digestion has historically been used as one step in the waste treatment process, to both reduce the mass of waste that needs to be disposed of and to generate biogas. This process is typically only able to reduce 30-40% of the waste mass because of the recalcitrant nature of the waste streams being treated. Anaerobic pretreatment with the thermophilic bacteria Caldicellulosiruptor bescii (C. bescii) has been proven to increase the percentage of mass digested and consequently increase methane production to …

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Understanding The Ahupua'a: Using Remote Sensing To Measure Upland Erosion And Evaluate Coral Reef Structure, Logan Kalaiwaipono Ellis Dec 2022

Understanding The Ahupua'a: Using Remote Sensing To Measure Upland Erosion And Evaluate Coral Reef Structure, Logan Kalaiwaipono Ellis

Theses and Dissertations

Under ever intensifying pressures from land use, climate change, and erosion, tropical islands are among the most vulnerable systems in the world. Terrestrial systems are weakened by intensifying land use patterns, the weakening of which is highlighted when high intensity rainfall events erode sediment and leads to sediment deposition on the marine system. The deposition of sediment on the marine system is a major stressor that can lead to weakened coral reefs and a decrease in marine resources commonly gathered for food. These interactions have led to the emergence of biocultural resource management strategies, one of which is the ahupua'a …

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Low Noise Front End Signal Transport Design For L-Band Phased Array Receivers, Spencer M. Ammermon Dec 2022

Low Noise Front End Signal Transport Design For L-Band Phased Array Receivers, Spencer M. Ammermon

Theses and Dissertations

RF receiver improvements in size, weight, power, and sensitivity are constant goals in the wireless communications community. The combination of phased array antenna systems with high speed analog to digital converters helps engineers meet these goals, because many of the analog components and tasks found in a traditional receive chain are moved into the digital domain. Although the hard work of signal reception is moved into digital signal processing, digital receivers rely on a high performance analog front end to properly condition a signal before analog to digital conversion. In this thesis, two RF front ends are developed for direct …

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Analyzing Patterns Of Complexity In Pre-University L2 English Writing, Zachary M. Lambert Dec 2022

Analyzing Patterns Of Complexity In Pre-University L2 English Writing, Zachary M. Lambert

Theses and Dissertations

The present study involves the creation and analysis of a corpus containing 7747 samples of timed, pre-matriculated L2 English writing from an IEP. The focus of the analysis is on three phrasal complexity measures with time and proficiency as fixed effects, examining their impact on each measure. Results of the analysis suggest that this is true for some phrasal measures, such as nominalizations and attributive adjectives, while others, such as noun-noun phrases, may indicate a lower level of proficiency or lesser allotted writing time. Nominalizations in particular demonstrated a strong relationship with both allotted time and proficiency, further suggesting that …

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Leveraging Fpga Primitives To Improve Word Reconstruction During Netlist Reverse Engineering, Reilly Mckendrick, Corey Simpson, Brent Nelson, Jeffrey Goeders Dec 2022

Leveraging Fpga Primitives To Improve Word Reconstruction During Netlist Reverse Engineering, Reilly Mckendrick, Corey Simpson, Brent Nelson, Jeffrey Goeders

Faculty Publications

While attempting to perform hardware trojan detection, or other low-level design analyses, it is often necessary to inspect and understand the gate-level netlist of an implemented hardware design. Unfortunately this process is challenging, as at the physical level, the design does not contain any hierarchy, net names, or word groupings. Previous work has shown how gate-level netlists can be analyzed to restore high-level circuit structures, including reconstructing multi-bit signals, which aids a user in understanding the behavior of the design. In this work we explore improvements to the word reconstruction process, specific to FPGA platforms. We demonstrate how hard-block primitives …

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Computational Tools For Modeling And Simulation Of Sooting Turbulent Non-Premixed Flames, Victoria B. Stephens Dec 2022

Computational Tools For Modeling And Simulation Of Sooting Turbulent Non-Premixed Flames, Victoria B. Stephens

Theses and Dissertations

Turbulent combustion systems are physically complex processes that involve many interdependent phenomena---including turbulent fluid dynamics, multi-component mass transfer, convective and radiative heat transfer, and multiphase flow---that occur over a wide range of length and time scales. Modeling and simulation studies complement experimental work by implementing and validating models and providing predictive capabilities, but current software tools are often limited by a lack of standardization and best practices, non-robust implementation, or over-specialization. Some topics in combustion CFD research, notably radiative heat transfer and soot modeling, are critically underrepresented in simulation studies as a result of software limitations. This project establishes and …

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Assessing The Knowledge, Attitudes, And Practices Of Elementary Teacher Educators On The Inclusion Of Computational Thinking Through Coding, Megan Christine Swanson Dec 2022

Assessing The Knowledge, Attitudes, And Practices Of Elementary Teacher Educators On The Inclusion Of Computational Thinking Through Coding, Megan Christine Swanson

Theses and Dissertations

This study sought to understand the knowledge, attitudes, and practices of teacher educators regarding Computational Thinking (CT) and coding. All elementary teacher educators in the state of Utah were sent a survey and asked to participate in a follow up interview. Twentynine faculty replied. Five of the 29 survey respondents were interviewed. Teacher educators shared their definitions of CT and coding, which primarily dealt with problem solving and computer programming, respectively. Overall attitudes were positive about incorporating CT and coding, but many participants questioned how it would fit into the already overwhelming nature of the elementary education major. However, those …

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Developing An Accurate Simulation Model For Predicting Friction Stir Welding Processes In 2219 Aluminum Alloy, Kennen Brooks Dec 2022

Developing An Accurate Simulation Model For Predicting Friction Stir Welding Processes In 2219 Aluminum Alloy, Kennen Brooks

Theses and Dissertations

Modeling of friction stir welding (FSW) is challenging, as there are large gradients in both strain rate and temperature that must be accounted for in the constitutive law of the material being joined. Constitutive laws are most often calibrated using flow stresses from hot compression or hot torsion testing, where strain rates are much lower than those of the FSW process. As such, the current work employed a recently developed method to measure flow stresses in AA 2219-T67 at the high strain rates typical of FSW. These data were used in the development of a finite element simulation of FSW …

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Advanced Isogeometric Discretization Techniques, Kyle Dennis Richardson Dec 2022

Advanced Isogeometric Discretization Techniques, Kyle Dennis Richardson

Theses and Dissertations

In this dissertation, I provide a robust, efficient inverse mapping algorithm for use in immersed simulation methods, specifically in the Flex Representation Method. I also explore a structural theory that unifies the theories of solids, shells, beams, and rigid bodies. As part of this, I preform a preliminary exploration of applying the Flex Representation Method to shells. Finally, I explore why higher order elements suffer from small critical time steps in explicit dynamics. I then propose a simple method of remedying this issue by exploiting the properties of U-splines.

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Determining Figure Skating Jump Under-Rotation In Real-Time Using Imu Sensors During Practice, Duncan O. Furgeson Dec 2022

Determining Figure Skating Jump Under-Rotation In Real-Time Using Imu Sensors During Practice, Duncan O. Furgeson

Theses and Dissertations

We explore the use of machine learning to detect under-rotation in figure skating jumps. Under- rotation in jumps is difficult for the skater to sense but learning to recognize under-rotation is an impor- tant part of learning proper jump technique. To address this difficulty, we present the Under-rotation Monitor, or UR Monitor, a system for detecting under-rotated figure skating jumps in real-time. UR Monitor uses a single inertial measurement unit (IMU) attached to the skater's waist that sends a stream of accelerometer and gyroscope data to a mobile phone via Bluetooth. The mobile phone creates and sends an input vector …

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Potential Local Extirpation Of An Imperiled Freshwater Mussel Population From Wildfire Runoff, Andrew J. Lawrence, Cindy Matuch, Jacquelyn J. Hancock, Andrew L. Rypel, Laura A. Eliassen Dec 2022

Potential Local Extirpation Of An Imperiled Freshwater Mussel Population From Wildfire Runoff, Andrew J. Lawrence, Cindy Matuch, Jacquelyn J. Hancock, Andrew L. Rypel, Laura A. Eliassen

Western North American Naturalist

Effects of wildfire and subsequent hydric erosion on freshwater communities are of increasing interest. While freshwater biodiversity is in a global state of decline, examples of climate-driven wildfire impacts to freshwater mussel populations are especially limited. We discovered a population of native floater mussels (Anodonta californiensis/nuttalliana), documented fish species, and recorded data on river substrate characteristics before and after an influx of wildfire runoff in Monterey County, California, USA. Pre-wildfire runoff surveys documented robust and naturally reproducing populations of mussels and 3 species of native fishes (Monterey sucker, Catostomus occidentalis mnioltiltus; Monterey roach, Lavinia symmetricus subditus; …

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