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A Systematic Literature Review Of Telehealth For Health Equity In Pediatric And Women's Health Care: Promise Vs Reality, Sharanya Chandu May 2023

A Systematic Literature Review Of Telehealth For Health Equity In Pediatric And Women's Health Care: Promise Vs Reality, Sharanya Chandu

Honors Scholar Theses

Background: Telehealth interventions can transform the healthcare system to improve accessibility, quality of care, and outcomes for women’s obstetric health.

Objective: This literature review seeks to summarize current research to understand the effect of telehealth on women’s obstetrics and gynecology outcomes.

Methods: A literature review was conducted following the PRISMA methodology to identify a set of papers containing information related to obstetrics and maternal health. The search terms used identified telehealth or telemedicine interventions used for obstetric, maternal, or prenatal care from the period 2013-2023. 19 articles were identified and reviewed.

Results: The literature review considered three primary aspects from …


The Neuroprotective Role Of Vitamin D In Humans With A Traumatic Brain Injury: A Systematic Review, Hailey Jarr May 2023

The Neuroprotective Role Of Vitamin D In Humans With A Traumatic Brain Injury: A Systematic Review, Hailey Jarr

Theses and Dissertations

Traumatic brain injuries (TBI) are a leading cause of death worldwide. Previous research supports a relationship between vitamin D and TBI outcomes; however, they rely on animal studies. This review aimed to examine the neuroprotective role of vitamin D in humans with TBIs. A search was completed (PubMed and Scopus) following PRISMA guidelines to review publications investigating the relationship between vitamin D deficiency (VDD) and TBI or the effect of vitamin D supplementation on TBI outcomes; 8 studies were identified. Patients had the
/="/">following ranges: 26-88% deficiency and 62-88% insufficiency compared to 24% and 49% of the general population. …


Ecomorphology Of A Predatory Deep-Sea Fish Family: Does Trophic Specialization Drive Hyperspeciation?, Ryan P. Mcgonagle, David Kerstetter, Danté Fenolio, Tracey Sutton May 2023

Ecomorphology Of A Predatory Deep-Sea Fish Family: Does Trophic Specialization Drive Hyperspeciation?, Ryan P. Mcgonagle, David Kerstetter, Danté Fenolio, Tracey Sutton

Marine & Environmental Sciences Faculty Articles

Two of the main drivers of speciation among aquatic vertebrates are physical isolation (e.g., lakes and streams) and micro-niche availability (e.g., tropical reefs). In both regards, the mesopelagic domain of the open ocean, Earth’s second largest cumulative ecosystem (behind only the bathypelagic domain), would seem retardant. Ocean circulation makes isolation rare on both contemporary and geological time/space scales, and the lack of substrate precludes stable micro-niches. Paradoxically, some pelagic taxa demonstrate much higher-than-expected species richness on regional scales. A prime example is the dragonfish family Stomiidae, the most speciose family of mesopelagic fishes, owing largely to the subfamily Melanostomiinae (scaleless …


Weight Change In College Freshmen: Personal, Interpersonal And Situational Influences, Kristin L. Kuhlmann May 2023

Weight Change In College Freshmen: Personal, Interpersonal And Situational Influences, Kristin L. Kuhlmann

Dissertations

Obesity has become the most significant noninfectious health risk in the United States, and the major causes of death and disability are shifting to chronic, non-communicable health conditions that are largely attributable to physical inactivity, overweight and obesity, and other diet-related factors. Among children and adolescents, the overweight/obesity rate is approaching 32%, with 17.9% of adolescents becoming obese. While the obesity rate has doubled in all age groups in the United States, it has tripled among young adults aged 18 to 28 years, and 70% of adolescents who are at a healthy weight will become overweight or obese as adults. …


The Green Core Of The Big Apple: The Significance Of Urban Green Spaces In New York City & Beyond, Grace Dailey May 2023

The Green Core Of The Big Apple: The Significance Of Urban Green Spaces In New York City & Beyond, Grace Dailey

Student Theses 2015-Present

This paper addresses the politics of urban green spaces which includes the issue of their inequitable distribution as well as related issues that can arise when communities do not have access to such spaces. There are a variety of types of urban green spaces, however, this paper will be focused on public parks. Together, such outdoor spaces can create cultural, recreational, and community building opportunities that are able to improve environmental and human health. Chapter 1 presents data about the existence and usage of urban green spaces around the world and in New York City in particular. Chapter 2 uses …


Chattahoochee River Front Design: Sustaining A Lost Culture Through Environmental And Social Stewardship Of Native American, Dalvin Ross May 2023

Chattahoochee River Front Design: Sustaining A Lost Culture Through Environmental And Social Stewardship Of Native American, Dalvin Ross

Bachelor of Architecture Theses - 5th Year

How vital is Native American culture in understanding the history and synergy between the social, natural, and built environments? The identity of indigenous people in North America has been stripped and forgotten over years. It is critical to promote rediscovering their ideologies through the establishment of a cultural center which features the architectural contributions of the Native Americans. This undergrade thesis focuses on the city of Atlanta, which has cultural remnants of the first inhabitants of this land. Still, it’s relevance in the community or architecture in Georgia is often overlooked. The Chattahoochee River is a natural tourist attraction, located …


Community And Population Dynamics Of Diatoms In Recovering Agricultural Stream And Ubiquitous Taxon In Low-Impact Sites Across Southeastern United States, Sydney Brown May 2023

Community And Population Dynamics Of Diatoms In Recovering Agricultural Stream And Ubiquitous Taxon In Low-Impact Sites Across Southeastern United States, Sydney Brown

Biology Theses

Streams play vital roles to surrounding communities and provide essential ecosystem services. The protection of streams is important, legally protected under the Clean Water Act (CWA) and can be monitored through the continuous analyses of biological data, like algal or other aquatic communities. Diatoms are a group of algae characterized by rigid glass cell walls and ubiquitous distribution. They are typically identified using the morphological species concept and an ever-varying range of sizes may pose challenges in the identification process. However, when identified and applied correctly, diatoms are robust bioindicators. This research identifies and analyzes low-impact sites across the Southeastern …


Detecting Native Freshwater Mussels In Pennsylvania Waterways: Comparison & Validation Of Environmental Dna Methods, Meredith Bennett May 2023

Detecting Native Freshwater Mussels In Pennsylvania Waterways: Comparison & Validation Of Environmental Dna Methods, Meredith Bennett

Electronic Theses and Dissertations

North America is home to approximately one third of the world's freshwater mussel species. They are highly imperiled organisms due to habitat destruction and invasive species. Traditional surveys rely on visual identification of mussels, but individuals tend to be rare and difficult to identify. An alternative method is to extract environmental DNA (eDNA) from water samples, which has advantages over traditional sampling, including less sampling effort and fewer hazards to researchers and organisms. We conducted a review of the two main eDNA approaches: single-species detection and metabarcoding. We also developed and validated metabarcoding primers for the detection of native mussels. …


Uncover The Underground : Distribution And Population Status Of Blind Snakes And Bogadek’S Burrowing Lizards, Man Ho Chan May 2023

Uncover The Underground : Distribution And Population Status Of Blind Snakes And Bogadek’S Burrowing Lizards, Man Ho Chan

Lingnan Theses (MPhil & PhD)

Globally, 28% of the reptiles are fossorial. Fossorial reptiles, which perform important ecological functions, such as being ecosystem engineers, top predators and bioindicators, are indispensable members of the soil ecosystem. However, the ecology of fossorial reptiles is relatively little known because of their cryptic behavior and rarity. In Hong Kong, there are four species of fossorial reptile, three of which are rare and of potential conservation concern. Among the four fossorial reptile species that occur in Hong Kong, Indotyphlops lazelli and Dibamus bogadeki, are endemic to Hong Kong and are globally threatened species. On the other hand, the distribution …


Evidence For Community Face Masking To Limit The Spread Of Sars-Cov-2: A Critical Review, Ian T. Liu, Vinay Prasad, Jonathan D. Darrow May 2023

Evidence For Community Face Masking To Limit The Spread Of Sars-Cov-2: A Critical Review, Ian T. Liu, Vinay Prasad, Jonathan D. Darrow

Health Matrix: The Journal of Law-Medicine

The use of facemasks in community settings has become an accepted public policy response to decrease disease transmission during the COVID-19 pandemic. Yet evidence of facemask efficacy is based primarily on observational studies that are subject to confounding and on mechanistic studies that rely on surrogate endpoints (such as droplet dispersion) as proxies for disease transmission. The available clinical evidence of facemask efficacy is of low quality and the best available clinical evidence has mostly failed to show efficacy, with fourteen of sixteen identified randomized controlled trials comparing face masks to no mask controls failing to find statistically significant benefit …


State Spending On Public Benefit Programs And The Differential Impact On Child Maltreatment By Race And Ethnicity, Henry T. Puls, Matthew Hall, Reiko Boyd, Paul J. Chung May 2023

State Spending On Public Benefit Programs And The Differential Impact On Child Maltreatment By Race And Ethnicity, Henry T. Puls, Matthew Hall, Reiko Boyd, Paul J. Chung

Research at Children's Mercy Month 2023

Background:

State spending on programs with the capacity to mitigate poverty have been shown to reduce child maltreatment overall. However, given pervasive racial/ethnic disparities across child maltreatment outcomes, it remains unclear if current spending and policies have different effects on child maltreatment by race/ethnicity.

Objective:

To determine if associations between state-level spending on public benefit programs and rates of child maltreatment reporting differ by race and ethnicity. We hypothesized that inverse associations between spending and maltreatment would be greater for non-Hispanic White children than for non-Hispanic Black or Hispanic children.

Design/Methods:

This was an ecological study of all U.S. states …


Hibernating Tricolored Bats At A Southeastern Recreation Site: Microsite Use And Public Perceptions, Rebecca Brown May 2023

Hibernating Tricolored Bats At A Southeastern Recreation Site: Microsite Use And Public Perceptions, Rebecca Brown

All Theses

High bat mortality from white-nose syndrome (WNS) has increased the need to manage hibernation sites. Management decisions should be based on science, and when sites are accessible to the public, also need to consider human dimensions. We used Stumphouse Tunnel, a recreation site and tricolored bat (Perimyotis subflavus) hibernaculum in northwestern South Carolina, as a case study to understand potential conflicts between conservation and recreation. The population declined by 90% after the arrival of white-nose syndrome (WNS), followed by stabilization and slight increases. Because the increase was associated with more bats roosting in the publicly accessible section, a potential …


Genotypic Result Of The Insulin-Like Receptor Gene Knockout In Daphnia Pulex Eb1, Anisa Sarah Kammaz May 2023

Genotypic Result Of The Insulin-Like Receptor Gene Knockout In Daphnia Pulex Eb1, Anisa Sarah Kammaz

2023 Spring Honors Capstone Projects - Archive

CRISPR (clustered regularly interspaced short palindromic repeats)-Cas9 has been used in multiple gene modification studies in various organisms. Daphnia, water fleas, are used in ecological studies due to their ability to sense and respond to environmental factors. Their quick life cycles make them prime candidates for gene modification and evolutionary studies. In our experiment, Daphnia pulex EB1 was used in the knockout of the Insulin-like Receptor gene via CRISPR-Cas9 due to its effect on dwarfism in humans and developmental disorders in mice. Polymerase Chain Reaction (PCR) sequencing was done to compare the EB1 gene of interest to the PA42 reference …


Understanding The Impacts Of Global Change: From Students To Microbes., Kylea Garces May 2023

Understanding The Impacts Of Global Change: From Students To Microbes., Kylea Garces

Electronic Theses and Dissertations

Global change is a crucial process, affecting every organism, from the billions of humans on earth, to the billions of microbes in the soil belowground. Evaluating the impacts of the many drastic changes associated with global change is essential in advancing our understanding in how to mitigate these consequences. Alongside the production of basic ecological knowledge associated with these environmental changes, improving education practices to promote science literacy surrounding global change is another step towards a more optimistic future. This dissertation investigates global change from two standpoints: ecologically, where increased atmospheric nitrogen (N) deposition alters plant-fungal endophyte symbiosis, and pedagogically, …


Leveraging Population Genomics Across Two Taxonomically Diverse Non-Model Systems To Understand Patterns Of Disease Transmission And Consequences Of Hybridization, Zachary Lamar Nikolakis May 2023

Leveraging Population Genomics Across Two Taxonomically Diverse Non-Model Systems To Understand Patterns Of Disease Transmission And Consequences Of Hybridization, Zachary Lamar Nikolakis

Biology Dissertations - Archive

The field of population genomics has been mainly applied to questions centered around understanding molecular variation, impacts of evolutionary processes, and the history of populations. Here I leverage population genomic techniques across two different systems to understand patterns of disease transmission across heavily monitored and controlled parasite populations and consequences of hybridization between divergent rattlesnake lineages. I employed multiple genome sequencing techniques with new methods to infer close-order relatedness from highly inbred human blood fluke populations in order to understand transmission pathways across a region experiencing a resurgence in disease. I then use a comparative population genomic approach by sampling …


Assessing Recreational User Impacts, Motivations, And Knowledge On The Spread Of Invasive Plant Species In A Managed, Multiple-Use Forest Ecosystem, Crystal Strickland May 2023

Assessing Recreational User Impacts, Motivations, And Knowledge On The Spread Of Invasive Plant Species In A Managed, Multiple-Use Forest Ecosystem, Crystal Strickland

All Theses

The spread of invasive plants is ecologically and economically detrimental to native ecosystems, animals, and humans. Recreation is one factor that may influence plant dispersal. The impacts of recreation on invasive plant spread are multifaceted and include the physical act of spreading and transporting seeds and vegetation to new areas on clothes, pets, and equipment, as well as the social aspect of outreach and education. Therefore, I used a multifaceted approach to assess the impact of human trafficked areas where recreational activities frequently occur on four known invasive plant species in the Clemson Experimental Forest (CEF) in South Carolina: Microstegium …


Extranodal Tumors And Chromosomal Abnormalities Associated With Non-Hodgkin Lymphoma In T(14;18)-Positive Patients, Alexis Finch May 2023

Extranodal Tumors And Chromosomal Abnormalities Associated With Non-Hodgkin Lymphoma In T(14;18)-Positive Patients, Alexis Finch

Honors Program: Senior Projects (Public)

Nebraska is mostly an agricultural state with a non-Hodgkin lymphoma (NHL) incidence rate of 20.1 per 100,000 individuals, which is greater than the US incidence rate of 19 per 100,000 individuals. It is possible that the higher incidence rate in Nebraska is due to an increase in pesticide usage. Pesticide exposure is linked to t(14;18), a genetic translocation involving the BCL2 gene that regulates apoptosis. The dysregulation of apoptosis could contribute to the proliferation of NHL. This exploratory study utilized the Nebraska Lymphoma Study Group, which consists of patients with non-Hodgkin lymphoma, Hodgkin disease, or some other neoplastic hematologic disorder …


Community Planning, Environmental Stewardship, And Water: A Comparative Assessment Of Green Infrastructure In Texas Cities, Amruta A. Sakalker May 2023

Community Planning, Environmental Stewardship, And Water: A Comparative Assessment Of Green Infrastructure In Texas Cities, Amruta A. Sakalker

Public Affairs Dissertations - Archive

Riparian lands, the interface between terrestrial and water ecologies, play a critical role in keeping urban ecosystems healthy. However, rapidly sprawling metropolitan regions in Texas continue to urbanize environmentally vulnerable riparian areas. As urban areas are growing, access to green spaces is shrinking, bringing contestation for programming, ownership, and use of lands around water bodies. Over the past two decades, there has been a growing trend of using greenbelt plans for trails, parks, preserves, and wetlands around water bodies. Although these plans mitigate some environmental impacts, their ability to address equity and justice needs to be examined to ensure that …


Alexandrium Spp. And Pseudo-Nitzschia Spp. Cohabitation In The Gulf Of Maine, Tiffany Winter May 2023

Alexandrium Spp. And Pseudo-Nitzschia Spp. Cohabitation In The Gulf Of Maine, Tiffany Winter

Master's Theses and Capstones

Globally, harmful algal blooms are a severe issue for marine ecosystems, animals, and humans both ecologically and economically. The Gulf of Maine is no stranger to harmful algal blooms, specifically the dinoflagellate, Alexandrium catenella, that has routinely been forming toxic blooms since the early 1970s. In 2016, a new species, the diatom Pseudo-nitzschia spp. formed a massive bloom and has had annual blooms since. Anecdotally, these two species do not bloom concurrently, suggesting there may be specific environmental conditions that promote bloom formation for each species. The intent of this research is to uncover potential parameters that are affecting bloom …


The Efficacy Of An Educational Toolkit To Enhance Knowledge Of Pediatric Reflux Management Among Occupational Therapists, Kelly Cullerton May 2023

The Efficacy Of An Educational Toolkit To Enhance Knowledge Of Pediatric Reflux Management Among Occupational Therapists, Kelly Cullerton

UNLV Theses, Dissertations, Professional Papers, and Capstones

This manuscript describes a quality improvement project completed by a student in the University of Nevada Las Vegas Occupational Therapy Doctorate Program. The project tests the efficacy of an educational toolkit for occupational therapists staffed at an acute care hospital in Las Vegas, Nevada, to increase their perceived knowledge of and ability to educate families on conservative management techniques for pediatric reflux management. Results indicate that the toolkit demonstrated efficacy in achieving this objective. The toolkit provided useful staff education and parent handouts for the occupational therapists to utilize in patient care as appropriate. This project’s ultimate aim was to …


Heat Stress Effects On Culex Pipiens Mosquitoes, Valeria Montoya May 2023

Heat Stress Effects On Culex Pipiens Mosquitoes, Valeria Montoya

Theses, Dissertations and Culminating Projects

Extreme weather events such as heat waves are becoming more frequent. This is a concern for both humans and other organisms like insects. Culex pipiens f. molestus mosquitoes are primary vectors of diseases including equine encephalitis, West Nile virus, Rift valley fever, and St. Louis encephalitis. With Cx. pipiens f. molestus being the primary vector of West Nile virus in North America, it is important to understand how more frequent heat waves affect their population dynamics. In this study, I compared the thermal tolerance of larval Cx. pipiens f. molestus that were exposed to prior heat stress to those that …


Improving The Sustainability Of The Channeled Whelk (Busycotypus Canaliculatus) Fishery: An Investigation Into Alternative Baits, Feeding Behavior, And Circadian Rhythms, Mary Munley May 2023

Improving The Sustainability Of The Channeled Whelk (Busycotypus Canaliculatus) Fishery: An Investigation Into Alternative Baits, Feeding Behavior, And Circadian Rhythms, Mary Munley

Master's Theses and Capstones

The channeled whelk (Busycotypus canaliculatus) is a large predatory marine gastropod that supports an important commercial fishery along the eastern coast of the United States. Channeled whelk fisheries are state regulated, with each state enforcing slightly different regulations. In Massachusetts, the fishery is regulated by the Massachusetts’s Division of Marine Fisheries (MA DMF). Massachusetts’ channeled whelk landings peaked in 2012 at 3.6 million lbs., valued at $6.2 million. Since 2012, landings have decreased, 766,975 lbs. were landed in 2021 worth $3.1 million. Catch per unit effort (CPUE; lbs per trap haul) has also steadily decreased, indicating the resource is likely …


Population-Based Estimates Of Children With Congenital Heart Disease And Quantifying Their Burden Of Care, Devin M. Parker May 2023

Population-Based Estimates Of Children With Congenital Heart Disease And Quantifying Their Burden Of Care, Devin M. Parker

Dartmouth College Ph.D Dissertations

Background. This dissertation examined children with congenital heart disease (CHD) in Colorado (CO) from 2012 to 2019. Specifically, three studies were conducted that investigated state prevalence rates, related comorbidities and geographic factors associated with access and outcomes for children with CHD. Methods. A descriptive, retrospective 8-year analysis of CO All Payer Claims Data (APCD). Children were identified by administrative diagnoses codes (CD-9-CM and ICD-10-CM). The population includes all children with CHD (aged < 18 years on Jan 1, 2012) with a documented CO zip-code and at least one healthcare encounter in CO. Coexisting comorbidities were defined by the Pediatric Chronic Complex Condition (PCCC) and Children with Disabilities (CWD) algorithms. Providers were identified by their National Provider ID (NPI) and categorized by APCD. Geographic access was calculated using a network analysis of the road distance weighted by travel speeds from the geographic centroid of every ZIP code in CO to that of the geocoded provider address. Outcomes were defined by Berenson-Eggers Type of Service (BETOS) codes. Multivariable logistic regression and mixed effect negative binomial regression models were used. Results. The first study found a significantly higher prevalence rate compared to the national average. A total of 1,566,328 children received care in CO from 2012 – …


Toward Accelerometer Recording Of Pit Viper Foraging Behavior In Nature: Validation And Case Study With Timber Rattlesnakes (Crotalus Horridus), Morgan L. Thompson May 2023

Toward Accelerometer Recording Of Pit Viper Foraging Behavior In Nature: Validation And Case Study With Timber Rattlesnakes (Crotalus Horridus), Morgan L. Thompson

Biology Theses

Accelerometer dataloggers are becoming increasingly common in field studies of animal behavior. Among the most difficult study subjects, and consequently, the most ideal candidates for accelerometer applications, are those for which simultaneous observation of key fitness-determining behaviors, such as foraging, across a sample of individuals in the wild is traditionally impossible or restricted to the use of proxy measures. This is the case for many solitary vertebrate predators, such as all pit vipers (Viperidae; Crotalinae). Large-bodied pit vipers are ambush (sit-and-wait) specialists that represent uniquely challenging and intriguing study subjects in predator ecology. Unlike many comparable avian or mammalian terrestrial …


Online Dashboards For Sars-Cov-2 Wastewater Data Need Standard Best Practices: An Environmental Health Communication Agenda., Colleen C. Naughton, Rochelle H. Holm, Nancy J. Lin, Brooklyn P. James, Ted Smith May 2023

Online Dashboards For Sars-Cov-2 Wastewater Data Need Standard Best Practices: An Environmental Health Communication Agenda., Colleen C. Naughton, Rochelle H. Holm, Nancy J. Lin, Brooklyn P. James, Ted Smith

Faculty and Staff Scholarship

The COVID-19 pandemic has highlighted the benefits of wastewater surveillance to supplement clinical data. Numerous online information dashboards have been rapidly, and typically independently, developed to communicate environmental surveillance data to public health officials and the public. In this study, we review dashboards presenting SARS-CoV-2 wastewater data and propose a path toward harmonization and improved risk communication. A list of 127 dashboards representing 27 countries was compiled. The variability was high and encompassed aspects including the graphics used for data presentation (e.g., line/bar graphs, maps, and tables), log versus linear scale, and 96 separate ways of labeling SARS-CoV-2 wastewater concentrations. …


The Role Of Sharks In The Human Ecological Systems Of Isla Cedros, Baja California, Alyssa Canoff May 2023

The Role Of Sharks In The Human Ecological Systems Of Isla Cedros, Baja California, Alyssa Canoff

Electronic Theses, Projects, and Dissertations

Remains of sharks are found worldwide in various archaeological contexts, but generally, the relationships between humans and sharks have been rare research topics. This thesis will present and discuss the shark remains found during the archaeological investigations at Isla Cedros, an island off the Pacific coast of the Baja California peninsula. I will discuss the distinct species of sharks in the assemblage, the types of remains, the contexts they were found in, and incorporate what is known about each species to interpret the diverse types of relationships humans have with sharks at Cedros. By incorporating human-behavioral ecology and symbolic behavior …


Characterizing Spatial Variability In Soil Co2 Fluxes In The Chihuahuan Desert Using Geostatistical Techniques, Viridiana Orona May 2023

Characterizing Spatial Variability In Soil Co2 Fluxes In The Chihuahuan Desert Using Geostatistical Techniques, Viridiana Orona

Open Access Theses & Dissertations

Spatial variability in soil CO2 efflux across landscapes is an important feature of the â??Critical Zoneâ?? within dryland ecosystems. In dryland critical zones, resources are often distributed in patches or resource islands. Although this is particularly true in natural settings, the significance of spatial variability in CO2 efflux and its patterns also extends to dryland agriculture. In both irrigated and unirrigated systems, human management practices can significantly impact both organic and inorganic carbon cycling processes, highlighting the importance of studying CO2 efflux in these systems. We examined the spatial patterns of soil CO2 efflux and quantified the magnitude and scale …


Fractally Sampling Diversity-Environment Relationships To Understand Plant Assemblage Health Across Spatial Scales, Elizabeth G. Simpson May 2023

Fractally Sampling Diversity-Environment Relationships To Understand Plant Assemblage Health Across Spatial Scales, Elizabeth G. Simpson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Humans influence the health of ecosystems and rely on healthy ecosystems to support their livelihoods and well-being. By looking at how the parts of ecosystems interact we can understand and improve ecosystem health. Ecosystem interactions change across spatial scales or different size patches of area. For example, individual organisms interact with each other at small spatial scales, while at large spatial scales, communities of organisms interact with weather conditions. However, many research studies do not look at how ecosystem interactions change across spatial scales. To address this gap in ecological research, I use a fractal sampling design which samples at …


The Effects Of Recent Climate Change On Spring Phenology, With A Special Focus On Patterns Of Bee Foraging, Michael Stemkovski May 2023

The Effects Of Recent Climate Change On Spring Phenology, With A Special Focus On Patterns Of Bee Foraging, Michael Stemkovski

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The date on which plants flower and on which bees begin to pollinate varies year-to-year depending on differences in weather. This seasonal timing is known as phenology, and it is already clear that climate change has pushed the spring phenology of many species earlier by increasing temperatures. This is particularly clear in flowering plants, but studying how and why the phenology of pollinators is shifting is more difficult. Most flowering plants rely on pollinators such as bees for their reproduction, and most bees rely on flowers for their sustenance, so bee and flower phenology has to overlap for the crucial …


Habitat Selection By Desert Carnivores: How Water, Intraguild Predation, And Prey Impact Animal Space Use, Nadine A. Pershyn May 2023

Habitat Selection By Desert Carnivores: How Water, Intraguild Predation, And Prey Impact Animal Space Use, Nadine A. Pershyn

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Across North America large carnivores have lost nearly half of their historic range, creating openings for smaller (< 15 kg) carnivores to take over their ecological roles. Coyotes (Canis latrans) have seen a significant range expansion, including into arid deserts. It was believed that the addition of artificial water sources by humans allowed coyotes to expand into desert ecosystems where they were previously unable to survive. The kit fox (Vulpes macrotis) is a small, desert-adapted carnivore with declining populations that faces threats from coyotes of intraguild predation. This is when carnivores compete over the same prey, and the larger carnivore (intraguild predator) kills the smaller carnivore (intraguild …