Life Sciences Commons^™

Ecological Studies Of Wolves On Isle Royale, Sarah Hoy, Rolf O. Peterson, John Vucetich

Ecological Studies of Wolves on Isle Royale

Annual Report 2023-2024

Occupational Engagement In Recreational Sports For The Deaf And Hard Of Hearing: An Employee Guidebook, Colleen Mcerlean, Mary Ann Smith, Christopher Ebner

Spring 2024 Virtual OTD Capstone Symposium

An employee guidebook to help increase occupational engagement within recreational sports for the Deaf and Hard of Hearing population in the Austin, TX area.

The Effects Of Land Use Change On Ant Communities In New England, Amelia K.L. Curry, Joseph A. Nelsen, Dale R. Stevens, Kaitlyn A. Mathis

Biology

Urbanisation and agricultural expansion are two of the most prevalent and intense forms of land use change worldwide and can have dramatic consequences on biodiversity and biotic community structure. Ants are extremely widespread, ecologically diverse and small ectotherms that are sensitive to changes from a wide range of environmental factors. Therefore, ants make an ideal study organism to examine the effects of anthropogenic land use change on biotic communities. In this study, we examined differences in ant species richness and community composition between urban parks, farms and forest fragments, and related these differences to environmental factors that vary among each …

3rd Place Research Paper: Cultural Attitudes Towards Ethnic Cuisine In Italy, Rachel Berns

Kevin and Tam Ross Undergraduate Research Prize

Italy has become a common “landing country” for many European and Asian immigrants, creating a perception of invasion that has led to cultural reactionism masked in the reinforcement of “traditional cuisine.” For so-called traditional foods to endure, they must continually be reinvented, bearing different meanings and social values throughout time and space while accumulating rich, cultural baggage that serves as a powerful marker of identity in a given society. This paper explores the role of traditional cuisine in Italian national identity and pride, and the subsequent historical culinary antagonism maintained in widespread attitudes toward ethnic cuisine in Italy. Through an …

Assessing The Impact Of Climate Change On Harbor Seals: Haul-Out Patterns In Iceland Using Cmip6 Projections, Colin Lau

Independent Study Project (ISP) Collection

Harbor seals (Phoca vitulina) are known to exhibit a preference for specific environmental and weather conditions when hauling out, particularly during the pupping and molting cycles during summer. Climate change is projected to have a significant impact on the haul-out patterns and site conditions of harbor seals in Iceland, which could further diminish their dwindling population. A comprehensive literature review was conducted to identify and discuss the environmental variables that can affect haul-out probability. Among them, surface wind speed and air temperature are reported to have the biggest influence on harbor seal haul-out numbers between May and August. Climate projections …

An Ecological Analysis Of The Elevational Gradient Effect On Mushroom Community Diversity Near Andasibe, Madagascar, Zoe Garver

Independent Study Project (ISP) Collection

The effect of elevational gradients on biodiversity has been widely studied in the field of ecology (Rahbek, 1995). The evidence supports a trend for highest biodiversity at mid latitudes and decreasing biodiversity as elevation increases (Rahbek, 1997; Grytnes, 2003; Hariharan and Buckley, 2022). This effect has primarily been explained by variation of temperatures and resource availability at different elevations. However, the effect that elevation plays on fungal communities is relatively underrepresented in the literature (Dahlberg, 2001). This study analyzes changes in mushroom diversity across an elevational gradient in Mitsinjo Reserve and Analamazaotra National Park found in Madagascar. Using the Braun-Blanquet …

Assessing The Progress And Effects Of Exotic Plant Invasions In A Sustainably Used Littoral Forest Fragment In Southeastern Madagascar, Grant Gerhardt

Independent Study Project (ISP) Collection

While it is important to conserve Madagascar’s unique natural forest environments and the biodiversity they contain, it is also essential that populations reliant on these ecosystems for their income and survival have access to the resources they provide. Sustainable use forests, designated by the IUCN as category VI protected areas, are the solution to meeting both of these conditions. At the same time, it is often the case that the use of forests invites disturbance, which in turn encourages the introduction and establishment of nonnative or invasive plant species. This study examines the degree to which the intensity of use …

Feasibility Study Of Coral Farming In Southwest Madagascar: In-Situ And Ex-Situ Approaches, Raquel Reis

Independent Study Project (ISP) Collection

The southwest coast of Madagascar is home to hundreds of miles of coral reefs that for decades have been susceptible to intense degradation due to anthropogenic influences on marine environments. For reasons involving economic opportunity, conservation strategies, human health safeguarding and advancements to coral research, coral aquaculture in the Toliara region presents an opportunity to restore quality of life and the environment. Other countries in the west Indian ocean have seen great success in coral aquaculture; however, Madagascar, despite having ideal natural circumstances, has not deeply explored coral aquaculture. This review presents an investigation into the feasibility of coral farming, …

Mushroom Composition Across An Elevational Gradient During The 2024 Wet Season In Mazumbai Forest Reserve, Tanzania, Christopher Brady

Independent Study Project (ISP) Collection

Mushrooms are key bioindicators that contribute greatly to ecological health, and their diversity is indicative of a healthy ecosystem. However, even with the vital role they play in ecological health, there are few studies which measure the diversity of mushrooms in Mazumbai Forest Reserve (MFR), Tanzania, Africa, and none which focus on diversity along the elevational gradient within the reserve (1300-1900m). This study measures the diversity and equitability of mushrooms growing in six elevational zones within MFR during the rainy season of 2024. A species checklist of mushrooms growing in MFR during the 2024 rainy season was created, tracking the …

Assessing The Impacts Of Anthropogenic Activities On Coral Reef Health In Ushongo, Tanzania Using Coral Diversity And Parrotfish Abundance As Indicators, Thao Mai

Independent Study Project (ISP) Collection

Coral reefs, covering two-thirds of our oceans, are vital and diverse ecosystems, earning them the nickname of “rainforests of the sea”. Despite occupying only 1% of the ocean’s floor, they support 25% of all marine species, providing shelter, nursery ground and food, all the while also protecting the coast and providing job opportunities for local communities. Considered keystone species, coral reefs are highly sensitive to disturbances caused by pollution, climate change, but also anthropogenic activities such as coastal development, destructive fishing practices and tourism, endangering their existence and the entire marine ecosystem. Parrotfish, a crucial resident of these ecosystems, often …

Rock Hyrax: A Study Of Hyrax Energy Budget And Behavior Near Randilen Wildlife Management Area, Tanzania, Alice Thompson

Independent Study Project (ISP) Collection

Conducted at the gate of Randilen Wildlife Management Area (WMA), the purpose of this study was to contribute knowledge regarding rock hyraxes (Procavia capensis) through studying their energy budget and behavior. Rock hyraxes are small mammals belonging to the order hyracoidea. Despite being abundant across most of the African continent and parts of the Middle East, these herbivorous animals remain understudied in Tanzania. During the wet season of spring 2024, a total of 70 hours was applied to this research over the course of 10 days (April 7th to April 16th) using both qualitative and quantitative methods. The …

Early Report Of A Microcosm Of The Fourth Major Global Bleaching Event: A Comprehensive Survey Of Coral Bleaching At Chumbe Island Coral Park, Zanzibar, Christian Boudreaux

Independent Study Project (ISP) Collection

Coral reefs harbor a wealth of the biodiversity present in the ocean. They provide an array of ecological and economic services that make them crucial to the function of a healthy ocean and prosperous coastal communities. Due to an array of anthropogenic stressors, including an increase in ocean temperatures as a result of climate change, reefs have been devastated worldwide. This is, in large part, due to the process of coral bleaching, the expelling of symbiont algae which the coral needs to produce energy, for an extended period until death. This study surveyed bleaching and death at a deeper and …

A Study Of Anthropogenic Impacts On Echinoderms In The Jambiani Intertidal Area, Zanzibar, Amaury O. Halley

Independent Study Project (ISP) Collection

The coastal region of Jambiani, Unguja, hosts a rich diversity of marine life within its extensive intertidal zones. Despite its ecological significance, this area is increasingly exposed to anthropogenic disturbances due to increased human activities. This study examines the impacts of these disturbances on the biodiversity, zonation, and species abundance of echinoderms in the intertidal habitats of Jambiani. Through a comprehensive field study involving fifteen transects and detailed substrate analysis, the project evaluated the distribution and abundance of echinoderm species and assessed the influence of human activities such as seaweed farming, anchor damage, and beach trampling on these communities. The …

Sovereign Seeds: Analyzing The Sustainability Of Peasant Seeds In The Context Of Climate Change And Rural Exodus In Tunisia, Alice Carlson

Independent Study Project (ISP) Collection

How sustainable are peasant seeds? I answer this question on the basis of three elements: environment, economy, and social justice. Using interviews with farmers from various regions of Tunisia, an interview with an expert on climate change and migration, and an interview with a civil society organization working to promote sustainable agriculture, I found that peasant seeds are a sustainable solution for a suffering agricultural sector. Depleted water sources and drought are bringing to light the problems with water-intensive hybrid seeds, and farmers are losing money. As young men increasingly leave the agricultural sector, women are left behind, finding themselves …

Structural Responses To Land Use In Pollination Networks: Effects Of Biodiversity And Alien Plants In The Ecuadorian Chocó, Eric Abrahams

Independent Study Project (ISP) Collection

As a globally recognized hotspot of biodiversity, the Ecuadorian Chocó Andino region is extremely important for research and conservation. However, little research has been done regarding the mutualistic networks that sustain this ecosystem. The analysis of plant-pollinator networks helps us understand how ecosystems respond to change and is vital to conserving ecological productivity across multiple spatial scales. This study establishes a baseline for pollinator network structure across a land use gradient near the western montane cloud forest in Ecuador. Plants and pollinators were sampled along 11 transects in farms, communities, roads in the Río Manduriacu valley. Weedy herbs dominated overall, …

Impacts Of Gas Flaring On Soil Quality In The Ecuadorian Amazon: Measuring Gas Flare Effects On Soils At Comparative Distances In Loma Del Tigre, Orellana, Francesca Lopresti

Independent Study Project (ISP) Collection

Gas flaring, the process of burning off the natural gas excreted during petroleum extraction, has recently been the source of public outcry, citing degraded public and environmental health caused by constant flaring near populated centers. While extensive research has been done on the environmental and health impacts of gas flaring, regionally specific research to the Ecuadorian Amazon is lacking. It is crucial that updated research in this region is produced to inform regulations that have the potential to minimize the physical, environmental, and economic impact of the petroleum industry on nearby, under-resourced, and marginalized communities. While air quality surrounding gas …

Género Y Resiliencia En La Amazonía Peruana: Las Experiencias Y Respuestas De Agricultoras Indígenas Ante El Cambio Climático, Zoe Klausner

Independent Study Project (ISP) Collection

El cambio climático antropogénico está redefiniendo rápidamente las relaciones humano-ambientales, especialmente en la Amazonía peruana, donde más de 66 comunidades indígenas enfrentan mayores sequías y temperaturas, afectando profundamente sus medios de vida. Crucialmente, desde la visión ecofeminista central a esta investigación se subraya que las mujeres indígenas experimentan los impactos del cambio climático más severamente y son a menudo los líderes en el fomento de la resiliencia ambiental. Esta investigación explora cómo las agricultoras indígenas de la Amazonía peruana viven el cambio climático y sus estrategias de adaptación y resiliencia. El trabajo de campo se realizó en la comunidad Ese'Eja …

Anuran Diversity And Abundance Across Two Sites With Varying Levels Of Light Pollution In El Valle De Antón, Coclé, Panamá, Jackson Dray

Independent Study Project (ISP) Collection

The impact of artificial light at night (ALAN) on anuran populations has been a subject of growing concern in ecological research. Anurans are particularly susceptible to the impacts of artificial light due to their nocturnal nature and an extensive exposure throughout various stages of life histories. Exposure to artificial light has been shown to impact the larval development and reproductive behavior of anurans. The impacts on anurans juvenile populations suggest a relationship between light pollution and anuran abundance. This study aimed to investigate the hypothesis that ALAN negatively affects the abundance and diversity of anurans. Field surveys were conducted in …

Variations In Salinity And Forest Structure Between Marginal And Cloistered Mangrove Forests In Boca Del Drago, Bocas Del Toro, Panama, Mary Elizabeth Hodge

Independent Study Project (ISP) Collection

Mangroves are incredibly important ecosystems that have an outsized impact on their surroundings, providing crucial ecosystem services like carbon sequestration and coastal protection. At the same time, mangroves are some of the most threatened habitats due to their valuable position along tropical coastlines. Globally, mangrove forests are deforested and degraded by aquaculture, tourism developments, urbanization, and overharvesting. Due to high rates of mangrove loss, mangrove deforestation is now illegal in Panama, though this legislation is inconsistent and allows for exceptions, especially in tourism developments. This study aims to probe the impacts of localized coastal developments on a small mangrove forest …

Guna Community Perspectives On Attributes, Changes, And Revitalization Of Nainu Agroecological Practices In Isla Tigre, Guna Yala Comarca, Panama, Neshima Vitale-Penniman

Independent Study Project (ISP) Collection

Indigenous agroecological systems are gaining international recognition for their capacity to conserve biodiversity while promoting food security and sovereignty. Nainu is the ancestral agriculture of the Guna people of eastern Panama, and it is characterized by a successional growing system that imitates the regeneration of the tropical forest in which it is practiced. This research aimed to (a) characterize how nainu is practiced by farmers in Isla Tigre, a community in Guna Yala, (b) characterize how nainu practices have changed over time, and (c) describe how farmers and community members in Isla Tigre are envisioning and actualizing the revitalization of …

Vertebrate Diversity In The La Amistad International Park Buffer Zone, Guadalupe, Chiriqui, Panamá, Mina Olson

Independent Study Project (ISP) Collection

Forest fragmentation and increasing agricultural land use are posing threats to the diversity of vertebrates in Panama and across the Mesoamerican Biological Corridor. Protected areas are crucial for providing connectivity and maintaining vertebrate populations. For endemic species with small native ranges, these protected areas are critical for their survival due to sensitivity of habitat change. Higher species diversity and occupancy has been reported for both birds and mammals in protected and forested areas. This pilot survey of vertebrate species was conducted to determine which species live in a primary forest within the buffer zone of La Amistad International Park near …

Population Genomics Provide Insight Into Ancestral Relationships And Diversity Of The Feral Horses Of Theodore Roosevelt National Park, Melissa A. Thompson, Blake E. Mccann, Turk Rhen, Rebecca Simmons

Biology Faculty Publications

Theodore Roosevelt National Park (TRNP) manages a herd of feral horses (Equus caballus) which was present on the landscape prior to the establishment of the park. The population presents a unique scenario in that it has experienced fairly intensive and well-documented management since the park's establishment, including herd size reductions, intentional introduction of diversity, and subsequent attempts to remove introduced lineages. This provides an interesting case study on the genetic effects of diverse evolutionary forces on an isolated feral population. To explore the effects of these forces and clarify the relationship of this feral herd with other horses, …

Old Vs. New: An Experiment On The Efficacy Of Complexity-Focused Reproductive Biology Lectures For Undergraduate Biology Students, Ive N. Muse, Shraddha Patel, Linda Fuselier

Undergraduate Research Events

Undergraduate reproductive biology courses are traditionally taught in a reductive manner, prioritizing a binary understanding of sex which oversimplifies reproductive behaviors and reproductive system development across diverse taxa. Although this binary approach to lessons on reproduction is intended to benefit students in learning foundational human reproductive concepts, it does not teach the most recent research in reproductive biology, which identifies reproductive variation as the norm. We designed and implemented a lesson on reproductive biology informed by the most current and accurate research and compared it to a traditionally taught biology lecture for first year majors. Students who received the experimental …

Tools For Biomolecular Modeling And Simulation, Xin Yang

Mathematics Theses and Dissertations

Electrostatic interactions play a pivotal role in understanding biomolecular systems, influencing their structural stability and functional dynamics. The Poisson-Boltzmann (PB) equation, a prevalent implicit solvent model that treats the solvent as a continuum while describes the mobile ions using the Boltzmann distribution, has become a standard tool for detailed investigations into biomolecular electrostatics. There are two primary methodologies: grid-based finite difference or finite element methods and body-fitted boundary element methods. This dissertation focuses on developing fast and accurate PB solvers, leveraging both methodologies, to meet diverse scientific needs and overcome various obstacles in the field.

Finger Contracture Relief Sensorized Splint, Katia Campos, Alfonso Gonzalez, Olivia Rojas

Posters - 2024

Hand traumas may result from an accident, a burn, or even something far more common like a jammed finger. Due to the pain, the hand is immobilized and this lack of movement, in addition to the healing processes, can lead to a deformity. The specific deformity addressed in this project is a Proximal Interphalangeal Joint Flexion Contracture, which is when the middle knuckles of the fingers are stuck in a flexed position. Contractions can occur after trauma or certain illnesses. It is the shortening of muscles, tendons, skin, and nearby soft tissues that causes the joints to become very stiff. …

Development And Validation Of A Vehicle Front Profile Finite Element Model To Evaluate Pedestrian Impacts, James Wolf

Master's Theses (2009 -)

In 2021, there were nearly 7500 pedestrians killed in traffic crashes in the U.S., the highest since 1981. Since the year 2000, Europe and Japan have adopted pedestrian crash protection programs for vehicles and have seen a decline in pedestrian fatalities; the U.S. has not yet adopted pedestrian crash protection and has seen an increase in pedestrian fatalities in that same time. European New Car Assessment Programme (Euro NCAP) outlines a detailed procedure for evaluations of new vehicles for pedestrian safety through headform, upper legform, and lower legform tests. Euro NCAP also uses generic finite element (FE) front-end vehicle models, …

Kinematics Of Bowing The Re-Strung Violin, Sarah Hayden

Master's Theses (2009 -)

Building upon existing research in motor learning and sensorimotor control, this thesis explores how the performance of a real-world task (playing a simple musical piece on the violin) is impacted by the spatial re-arrangement of the violin’s strings, and how performance recovers with practice (relearning). I recorded audio performances and bow kinematics as violinists with a wide range of prior skills played a familiar 2-octave G-Major arpeggio 50 times. Some subjects played all 50 arpeggios on a violin with the standard string arrangement (the control violin). Another set of subjects played the middle 30 arpeggios with a “similar” violin with …

Monophosphoryl Lipid A-Based Adjuvant To Promote The Immunogenicity Of Multivalent Meningococcal Polysaccharide Conjugate Vaccines, Kishore Alugupalli

Department of Microbiology and Immunology Faculty Papers

Activation of the adaptive immune system requires the engagement of costimulatory pathways in addition to B and T cell Ag receptor signaling, and adjuvants play a central role in this process. Many Gram-negative bacterial polysaccharide vaccines, including the tetravalent meningococcal conjugate vaccines (MCV4) and typhoid Vi polysaccharide vaccines, do not incorporate adjuvants. The immunogenicity of typhoid vaccines is due to the presence of associated TLR4 ligands in these vaccines. Because the immunogenicity of MCV4 is poor and requires boosters, I hypothesized that TLR4 ligands are absent in MCV4 and that incorporation of a TLR4 ligand-based adjuvant would improve their immunogenicity. …

Exploring Cation Exchange: Unveiling Its Significance In Biochar And Bioenergetics Applications, Gyanendra Kharel

Chemistry & Biochemistry Theses & Dissertations

Cation exchange, a cornerstone of soil chemistry and nutrient cycling, is a fundamental chemical process that occurs in soils, sediments, membranes, and other solid materials. It involves the interchange of positively charged ions, or cations, between a solid matrix and a surrounding solution. This process is crucial in various natural and engineered systems, leading to a range of applications across different fields.

This dissertation presents an extensive investigation into the applications of cation exchange in the fields of biochar and bioenergetics, encompassing three distinct aims. The first aim concentrates on the surface oxygenation of biochar through ozonization, aiming to achieve …

Reliability Of Popliteal Artery Flow-Mediated Dilation In The Seated Position, Taskina Akhter

Rehabilitation Sciences Theses & Dissertations

Flow-mediated dilation (FMD) is a noninvasive measurement of endothelial function, which is a useful prognostic tool for cardiovascular disease risk. Despite its widespread use since 1992, the reproducibility of FMD varies widely between studies. This variability in reproducibility is especially significant in the case of the popliteal artery due to different methodological approaches. Studies perform popliteal FMD in various body positions, with the prone and seated positions most common. However, no studies have examined the reproducibility of both the seated and prone positions of the popliteal artery FMD. Therefore, the aim of this study is to examine the test-retest and …