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Plant Physiological Responses To Environmental Change In A Marsh-Mangrove Ecotone, Matthew Sturchio

UNF Graduate Theses and Dissertations

Globally, photosynthesis (A) and autotrophic respiration (R) are the two largest physiological processes responsible for CO₂ flux. Coastal wetland ecosystems are responsible for some of the highest rates of C sequestration. Marsh grass and mangrove habitats responsible for this service are important in supporting biodiversity and preventing shoreline erosion, yet little is known about how this vegetation will respond physiologically to effects of climate and global change. In the first chapter a warming experiment was used to determine whether a C₄ marsh grass (Spartina alterniflora) and a C₃ mangrove (Avicennia …

Physician Knowledge, Attitudes, And Behaviors Towards Registered Dietitian Nutritionists, Amy Motley Jones

UNF Graduate Theses and Dissertations

Diet is increasingly linked with overall quality of life, and a healthy diet is now being considered one of the cornerstones of preventative care. Physicians rely on Registered Dietitian Nutritionists (RDNs) as most doctors lack the nutrition knowledge to properly treat their patients, especially during their residency. Little published information exists on the specific collaboration of RDNs and resident physicians. This study aimed to determine whether mentoring with an RDN increased physician nutrition knowledge, increased consults to RDNs, and whether physician attitudes improved regarding their understanding of the role of the RDN in healthcare. Knowledge or attitude alone are not …

An Investigation Of The Moderating Effects Of Household Composition And Developmental Age On Food Insecurity Impacting Mental Health, Monique Villamor, Monique V. Villamor

UNF Graduate Theses and Dissertations

The current study examined how developmental stages of adulthood (emerging, middle, and late) and household composition (living with or without children) influence the experiences of food insecurity in regard to food-related protective strategies and mental health consequences. Using a moderated moderation analysis, the impact of age conditional on the effects of household composition aimed to quantify how food-related protective strategies predicted levels of food insecurity thus leading to anxiety and depression. Results indicated developmental stages and household composition are non-significant moderators across three models. However, middle-adult participants demonstrated increased susceptibility to severe food insecurity, further contributing to literature on midlife …

An Investigation Of The Role Of Basigin-Variant-1 In The Immune Response Within The Retina, Abigail D. Tompa

UNF Graduate Theses and Dissertations

The neural retina is considered an immune privileged area, in that the eye attempts to suppress the inflammatory response to preserve vision. If there is damage to the blood-retina barrier, such as in diabetes or macular degeneration, it is possible for monocytes to travel out of the blood vessels and into the retina. While studying retinoblastoma, a research group determined that the protein, Basigin, through its extracellular domain, elicits an immune response by enhancing transcription of the pro-inflammatory cytokine interleukin-6 (IL-6). Basigin is cell adhesion molecule that belongs to the immunoglobulin superfamily. The Basigin gene has two main transcripts, that …

Seed Mix Design, Planting Time, And First-Year Mowing Management To Improve Multifunctionality And Cost-Effectiveness Of Tallgrass Prairie Reconstructions, Alec James Glidden

Dissertations and Theses @ UNI

The conversion of the Midwestern United States’ tallgrass prairies to agriculture has resulted in extensive habitat loss and degradation and a decline in the provisioning of ecosystem services. To restore these services the United States Department of Agriculture created the Conservation Reserve Program (CRP) which provides incentives to agricultural landowners to implement conservation practices designed to meet goals pertaining to single ecosystem services. We studied the effects of seed mix design, planting time, and first-year management on the multifunctionality and cost-effectiveness of prairie reconstructions. We established research plots planted with one of three seed mixes either in the dormant (fall) …

Community Diversity Influences Selection On Nutrient Resorption In Panicum Virgatum, Michael J. Lashbrook

Dissertations and Theses @ UNI

Panicum virgatum L. (switchgrass) is a bioenergy crop shown to conserve and recycle nutrients through a process known as nutrient resorption. While there are many studies looking at various aspects of nutrient cycling in switchgrass, it remains unclear whether selection is acting upon increased nutrient resorption in this species. Further, there are no phenotypic selection studies coupling empirical sexual and asexual reproduction data.

A field study and a modeling study were conducted to determine phenotypic selection on nutrient resorption and the influence of resorption on asexual reproduction in switchgrass. For the field study of phenotypic selection, I hypothesized selection favors …

Front Matter - Table Of Contents - Preface

Iowa Journal of Communication

No abstract provided.

Iowa Journal Of Communication, Volume 53, Number 1, Fall 2021 [Download Entire Issue]

Iowa Journal of Communication

No abstract provided.

The Systematics Of Physaria Sensu Stricto From Wyoming And Surrounding Areas, Jason Ratcliff

Dissertations and Theses @ UNI

Two genera of Brassicaceae – Lesquerella and Physaria – were recently united on the basis of monophyly. Classically, these genera have been distinguished based on morphology with 'traditional” Physaria species having doubly inflated (didymous) fruits. Molecular data consisting of ribosomal internal transcribed spacer (ITS) DNA sequences indicate Physaria has evolved from the larger Lesquerella genus, thus making Lesquerella a paraphyletic grouping as previously described. A revised treatment of the combined Physaria recognized 106 species within the genus, of which 26 taxa occur in Wyoming. Of the Wyoming taxa, those traditionally described as belonging to Physaria (i.e.Physaria sensu stricto) have …

Synaptic Processes And Immune-Related Pathways Implicated In Tourette Syndrome, Douglas W. Woods

Psychology Faculty Research and Publications

Tourette syndrome (TS) is a neuropsychiatric disorder of complex genetic architecture involving multiple interacting genes. Here, we sought to elucidate the pathways that underlie the neurobiology of the disorder through genome-wide analysis. We analyzed genome-wide genotypic data of 3581 individuals with TS and 7682 ancestry-matched controls and investigated associations of TS with sets of genes that are expressed in particular cell types and operate in specific neuronal and glial functions. We employed a self-contained, set-based association method (SBA) as well as a competitive gene set method (MAGMA) using individual-level genotype data to perform a comprehensive investigation of the biological background …

Major Problems: Choice Of Major By Transgender College Students, Lux K. Barton , '21

Senior Theses, Projects, and Awards

Despite the increasing visibility of LGBTQ identities in today's society, there is still a lack of research on how students of these identities navigate higher education. In particular, the factors that determine the choices of major of transgender college students are not well known. This study aimed to answer several questions about how transgender students select majors, including whether they select majors differently than their cisgender peers, what factors drive their decisions, and how they navigate their chosen majors. The study utilized a mixed methods approach, including the use of a survey on major choice and satisfaction with majors distributed …

Qui Est Ourika?: Méditations Sur Une Figure Littéraire Et La Condition De La Femme Noire, Abigail X. Young , '21

Senior Theses, Projects, and Awards

No abstract provided.

Three-Dimensional Mapping Reveals Scale-Dependent Dynamics In Biogenic Reef Habitat Structure, Tim Jackson-Bué, Gareth J. Williams, Guy Walker-Springett, Steven J. Rowlands, Andrew J. Davies

Biological Sciences Faculty Publications

Habitat structure influences a broad range of ecological interactions and ecosystem functions across biomes. To understand and effectively manage dynamic ecosystems, we need detailed information about habitat properties and how they vary across spatial and temporal scales. Measuring and monitoring variation in three-dimensional (3D) habitat structure has traditionally been challenging, despite recognition of its importance to ecological processes. Modern 3D mapping technologies present opportunities to characterize spatial and temporal variation in habitat structure at a range of ecologically relevant scales. Biogenic reefs are structurally complex and dynamic habitats, in which structure has a pivotal influence on ecosystem biodiversity, function and …

Performance Of A Native Butterfly And Introduced Moth On Native And Introduced Lineages Of Phragmites Australis, Adam M. Lambert, Lisa A. Tewksbury, Richard A. Casagrande

Plant Sciences and Entomology Faculty Publications

This study examined the performance of Poanes viator (Edwards) (Hesperiidae), a native North American skipper, and Rhizedra lutosa (Hübner) (Noctuidae), an introduced moth, reared on native and non-native, invasive lineages of Phragmites australis. Poanes viator is a generalist on monocots and larvae were also fed leaves of Zizania aquatica, a native macrophyte that the skipper commonly uses as a host plant. Larval survival and duration, pupal weight, and pupation time were compared for P. viator feeding on leaf tissue and R. lutosa feeding on rhizomes of either native or introduced plants. We also tested an artificial diet supplemented with P. …

Entomological Risk Assessment For Dengue Virus Transmission During 2016-2020 In Kamphaeng Phet, Thailand, Thanyalak Fansiri, Darunee Buddhari, Nattaphol Pathawong, Arissara Pongsiri, Chonticha Klungthong, Sopon Iamsirithaworn, Anthony R. Jones, Stefan Fernandez, Anon Srikiatkhachorn, Alan L. Rothman, Kathryn B. Anderson, Stephen J. Thomas, Timothy P. Endy, Alongkot Ponlawat

Institute for Immunology and Informatics Faculty Publications

Individual houses with high risks of dengue virus (DENV) transmission might be a source of virus transmission within the neighborhood. We conducted an entomological risk assessment for DENV transmission at the household level, comprising family cohort members residing in the same location, to assess the risk for dengue virus transmitted by mosquito vectors. The studies were conducted in Kamphaeng Phet Province, Thailand, during 2016–2020. Entomological investigations were performed in 35 cohort families on day 1 and day 14 after receiving dengue case reports. DENV was found in 22 Aedes samples (4.9%) out of 451 tested samples. A significantly higher DENV …

A Counter-History Of Rhetorical Ecologies, Madison Jones

Professional and Public Writing Faculty Publications

In this essay, I argue that the ecological turn in rhetorical studies has produced spatiotemporal problems and that these problems are directly tied to the material disciplinary history of ecosystems ecology and its connections to the Anthropocene violence of nuclear colonialism. These spatiotemporal concerns result from rhetoric’s “ecological moment”—a kairotic framework that emphasizes flux but elides material histories. Building from rhetorical scholarship in decolonial historiography and place-based methods, I offer a counterhistory of ecology to demonstrate how our field can better engage with the dynamic narrative pasts that shape contemporary rhetorical ecological inquiry. Through this counterhistory, I provide a method …

Deep Mapping For Environmental Communication Design, Shannon Butts, Madison Jones

Professional and Public Writing Faculty Publications

This article shares lessons from designing EcoTour, a multimedia environmental advocacy project in a state park, and it describes theoretical, practical, and pedagogical connections between locative media and community-engaged design. While maps can help share information about places, people, and change, they also limit how we visualize complex stories. Using deep mapping, and blending augmented reality with digital maps, EcoTour helps people understand big problems like climate change within the context of their local community. This article demonstrates the rhetorical potential of community-engaged design strategies to affect users, prompt action, and create more democratic discourse in environmental communication.

Indigenizing Ecosystem Management In Rhode Island, Jackson Cox

Open Access Master's Theses

This project interviewed members of the Narragansett Tribe on the concerns the Tribe has with climate change. Following the guidelines of decolonizing methodologies and the concept of Indigenizing futures, this project aimed to be as respectful and useful to the Narragansett Tribe as possible. The project delves into current and future Narragansett concerns the Narragansett regarding climate change, and it identifies some of the cultural, historical, and societal factors that inform their viewpoints on climate change and climate change adaptation. Some of the concerns for the Tribe included: air quality, the health of forest resources, and energy production and consumption. …

The Big Data Regulator, Rebooted: Why And How The Fda Can And Should Disclose Confidential Data On Prescription Drugs And Vaccines, Christopher J. Morten, Amy Kapczynski

Faculty Scholarship

Medicines and vaccines are complex products, and it is often extraordinarily difficult to know whether they help or hurt. The Food and Drug Administration (FDA) holds an enormous reservoir of data that sheds light on that precise question, yet currently releases only a trickle to researchers, doctors, and patients. Recent examples show that data secrecy can be deadly, and existing laws such as the Freedom of Information Act (FOIA) cannot solve the problem. We present here a wealth of new evidence about the urgency of the problem and argue that the FDA must “reboot” its rules to proactively disclose all …

Removing Carbon Dioxide Through Ocean Alkalinity Enhancement: Legal Challenges And Opportunities, Romany M. Webb, Korey Silverman-Roati, Michael B. Gerrard

Faculty Scholarship

Many scientists now agree that achieving the 2015 Paris Agreement’s goal of limiting global warming to “well below” 2°C, and ideally to 1.5°C, above pre-industrial levels will require both major reductions in greenhouse gas emissions and the removal of massive amounts of carbon dioxide from the atmosphere. Various terrestrial and ocean-based carbon dioxide removal techniques have been proposed, but further research is needed to evaluate their relative benefits and drawbacks. Initial studies suggest that terrestrial carbon dioxide removal techniques, such as bioenergy with carbon capture and storage, may require large amounts of land, which could lead to conflicts with other …

Advances In The Arms Race Between Silkworm And Baculovirus, Liang Jiang, Marian R. Goldsmith, Qingyou Xia

Biological Sciences Faculty Publications

Insects are the largest group of animals. Nearly all organisms, including insects, have viral pathogens. An important domesticated economic insect is the silkworm moth Bombyx mori. B. mori nucleopolyhedrovirus (BmNPV) is a typical baculovirus and a primary silkworm pathogen. It causes major economic losses in sericulture. Baculoviruses are used in biological pest control and as a bioreactor. Silkworm and baculovirus comprise a well-established model of insect–virus interactions. Several recent studies have focused on this model and provided novel insights into viral infections and host defense. Here, we focus on baculovirus invasion, silkworm immune response, baculovirus evasion of host immunity, …

Exploring Social-Ecological Trade-Offs In Fisheries Using A Coupled Food Web And Human Behavior Model, Anne A. Innes-Gold, Tyler Pavlowich, Margaret Heinichen, M. Conor Mcmanus, Jason Mcnamee, Jeremy Collie, Austin T. Humphries

Fisheries, Animal and Veterinary Sciences Faculty Publications

Marine fisheries represent a social-ecological system driven by both complex ecological processes and human interactions. Ecosystem-based fisheries management requires an understanding of both the biological and social components, and management failure can occur when either are excluded. Despite the significance of both, most research has focused on characterizing biological uncertainty rather than on better understanding the impacts of human behavior because of the difficulty of incorporating human behavior into simulation models. In this study, we use the fisheries in Narragansett Bay (Rhode Island, USA) as a case study to demonstrate how coupled modeling can be used to represent interactions between …

Draft Genome Sequence Of Salegentibacter Sp. Strain Bdj18, A Plankton-Associated Bacterium In The Northeast Atlantic Ocean, Elizabeth J. Mcdermith, Alexa R. Sterling, Matthew J. Bertin, Bethany D. Jenkins

Cell and Molecular Biology Faculty Publications

Salegentibacter sp. strain BDJ18 was isolated from a plankton-associated seawater sample from the northeast Atlantic Ocean. We report its draft genome assembly, which includes genes potentially important for microbial interactions in the marine environment.

Novel Use Of Species Distribution Modeling To Identify High Priority Sites For American Woodcock Habitat Management, Bill Buffum, Roger Masse, Scott R. Mcwilliams

Natural Resources Science Faculty Publications

Most species distribution models (SDMs) predict the probability of presence (POP) of a species at any location based on an analysis of known occurrences and environmental variables; however, such SDMs cannot predict how much the POP of a species that requires young forest would change if a new patch of young forest is created at a certain location. We developed a new SDM tool to identify and prioritize sites where forest management efforts to create young forest vegetation would likely have the most positive effect for Scolopax minor (American Woodcock), an important umbrella species for other birds that require …

Do You Copy? Post-Traumatic Stress Disorder, Auditory Processing, And Heart Rate Variability, Lyndsey Johnson

UNF Graduate Theses and Dissertations

Self -report measures used in PTSD research have the potential to limit the degree of symptom severity in military veterans, especially as there is often underreporting in this population (Kline, Falca-Dodson, Susner et al., 2010). Polyvagal Theory provides a framework assessing if physiological measures can tap into PTSD Symptomology (Porges, 1995). It is therefore hypothesized that lower scores on auditory processing tests will be positively correlated with higher scores on Stress and PTSD measures. Additionally, it is thought that lower scores on auditory processing tedts as well as higher scores on PTSD and Stress Measures will be positively correlated with …

Characterization Of A Scalloped Hammerhead (Sphyrna Lewini) Nursery Habitat In Portions Of The Atlantic Intracoastal Waterway, Bryanna N. Wargat

UNF Graduate Theses and Dissertations

The scalloped hammerhead shark (Sphyrna lewini) worldwide population has been in sharp decline, and they are currently listed as a globally critically endangered species by the IUCN. This warrants a need to identify and protect critical habitats for the species, such as nurseries, which promote stable populations. A section of the Tolomato River, in northeastern Florida, has shown to host large and consistent numbers of young of year scalloped hammerhead sharks. This gave cause to determine whether this portion of the Atlantic Intracoastal Waterway (ICW) serves as a nursery habitat for the species and to understand how the …

Disentangling The Role Of Self-Esteem On Eating Disorders In African American Youth, Carly Alexandria Wagner

UNF Graduate Theses and Dissertations

Self- esteem (SE) has been identified to have a significant impact on eating disorders (ED). Although previous studies have found a relationship between SE and EDs, further investigation in needed because SE and EDs affect gender, age, weight status, and ethnicity heterogeneously. In particular, there is limited research and inconsistent findings on the impact of SE on EDs in youth, males, and African Americans (AAs). This study had six aims: 1) Observe gender and age differences in SE, 2) Examine the impact of weight status on SE, 3) Observe gender and age effects on EDs, 4) Examine the impact of …

Minimizing Reaction Systems, Matthew R. Thomas

UNF Graduate Theses and Dissertations

The theoretical model for reaction systems is a relatively new framework originally proposed as a mathematical model for biochemical processes which take place in living cells. Growing interest in this research area has lead to the abstraction of the model for non-biological purpose as well. Reaction systems, with a well understood behavior, have become important for studying transition systems. As with any mathematical model, we want to simplify a given implementation of the model as much as possible while maintaining functional equivalence. This paper discusses the formal model for reaction systems, how we can simplify them with minimization techniques, some …

Parents' Attitudes And Beliefs Towards Dietary Behaviors Of Children With Autism Aged 5-13 Years, Subashree Narayanan

UNF Graduate Theses and Dissertations

Autism is a neurodevelopmental disability that may affect nutritional management of children with autism. Parent’s attitudes and their behavior towards healthy eating reflects on the child’s eating habits and thus, their nutritional health. This study aimed to describe the diet quality of children with autism using the Healthy Eating Index (HEI) scores. It also aimed to assess the relationship between parent’s perceived barriers and self-efficacy and children’s dietary behavior and dietary intake (age 5-13 years). The relationship was assessed using 2 questionnaires, Nutrition and Health Awareness and BAMBI questionnaire for parent’s attitudes and beliefs and dietary behavior, respectively. Dietary intake …

Residency And Sociality Analysis Of Skin Lesions In Bottlenose Dolphins (Tursiops Truncatus) Of The St. Johns River, Fl, Brittney Divittore-Goodrum

UNF Graduate Theses and Dissertations

Photo analysis of skin lesions is a non-invasive method to measure the health of cetacean populations. The St. Johns River (SJR) in NE Florida is an estuarine system inhabited by bottlenose dolphins that is characterized by high levels of anthropogenic activity, which can impact dolphin health. Social transmission of disease may influence lesion formation in dolphins; thus this study aimed to determine if skin lesion prevalence and body coverage differed based on 1) the amount of time spent in the SJR annually and 2) sociality measures. The dataset was restricted to three 12-month periods, based on the occurrence of an …