Digital Commons Network^™

Samaki Salama - Promoting Healthy Child Growth And Sustainable Fisheries In Coastal Kenya: A Study Protocol, Ivy Blackmore, Andrew Wamukota, Elizabeth Kamau-Mbuthia, Austin T. Humphries, Carolyn Lesorogol, Rachel Cohn, Catherine Sarange, Francis Mbogholi, Clay Obata, Christopher Cheupe, Joaquim Cheupe, Lisa Sherburne, Melissa Chapnick, Mary Kate Cartmill, Lora L. Iannotti

Fisheries, Animal and Veterinary Sciences Faculty Publications

Background: One in five young children globally suffer the consequences of stunted growth and development and millions experience deficiencies in zinc, iron, iodine, vitamins A and B12, nutrients found bioavailable in fish foods. Small-scale fisheries have the potential to generate income and augment fish consumption while being environmentally sustainable if appropriately managed. However, those engaged in small-scale fisheries are often marginalized, poor, and malnourished. The Samaki Salama project seeks to better understand and address these challenges through a three-arm, longitudinal matched cluster study which evaluates the impact of an integrated nutrition social marketing and modified fishing trap intervention.

Methods …

Global 16s Rrna Diversity Of Provannid Snail Endosymbionts From Indo-Pacific Deep-Sea Hydrothermal Vents, Corinna Breusing, Jade Castel, Yi Yang, Thomas Broquet, Jin Sun, Didier Jollivet, Pei-Yuan Qian, Roxanne A. Beinart

Graduate School of Oceanography Faculty Publications

No abstract provided.

Global Distribution Of The Cold-Water Coral Lophelia Pertusa, R. Tong, Andrew J. Davies, A. Purser, X. Liu, F. Liu

Graduate School of Oceanography Faculty Publications

Lophelia pertusa plays an important role as a major contributor to many cold-water coral reefs, supporting a high diversity of associated benthic and benthopelagic species. Due to the high sensitivity of L. pertusa to human activity, it has been classified as indicator species for Vulnerable Marine Ecosystems. However, the global spatial distribution of L. pertusa is far from well known. In this study, a database of L. pertusa presence data was compiled derived from the large number of L. pertusa occurrence records appearing in recent years. In conjunction with data layers covering a range of environmental drivers, habitat suitability for …

Assortative Mixing In Eastern Spadefoot (Scaphiopus Holbrookii) Spatial Networks Is Driven By Landscape Features, Anne Devan-Song, M. A. Walden, James R. Watson, Anna E. Jolles, Justine M. Fox, Nancy E. Karraker

Natural Resources Science Faculty Publications

Biotic and abiotic factors drive assortative mixing (preference for or sorting with individuals with similar characteristics) in animal populations on a landscape, with implications for dispersal, population structuring, and other ecological and evolutionary processes. However, patterns and generative mechanisms of assortative mixing are overlooked in amphibians outside of specific life history events such as reproduction. The aims of this project were to determine whether there is assortative mixing by size and life history category in eastern spadefoots (Scaphiopus holbrookii), whether these patterns are preserved across time and spatial scale, and quantify the nature and relative role of various …

Analyte-Sensing Particles And Impact Of Plastics On Environmentally Abundant Bacteria, Tania Thalyta Silva De Oliveira

Open Access Dissertations

Nano and microscale materials exhibit exciting chemical, physical and biological properties that dictate how they function. Furthermore, their surface chemistry influences how they respond to a specific application and interact with their surroundings. In this dissertation, a technique used to synthesize tunable hybrid gold nanoparticles for environmental sensing applications by Raman is presented, as well as the fate of nano and microplastics when in the presence of an abundant bacteria in the aquatic environment.Gold nanoparticles are widely used in many applications due to their various properties, such as facile synthesis, biocompatibility, surface conjugation with various ligand types, and tunability. The …

Impacts Of Hypertension And Thrombosis In A Rat Model Of Cerebral Amyloid Angiopathy (Rtg-Di), Aleksandra Stanisavljevic

Open Access Dissertations

Hypertension (HTN) and thrombotic events cause vascular compromise and are both related to pathology of cerebral amyloid angiopathy (CAA). Both HTN and CAA are cerebral small vessel diseases that cause many of the same pathologies, particularly thrombosis, intracerebral hemorrhage, and stroke. The purpose of this dissertation is to elucidate how introducing the common vascular comorbidity HTN (with two differing rat models) or the pharmacological targeting of thrombin by dabigatran etexilate, impacts pathology in the transgenic rTg-DI rat model of CAA to elucidate mechanisms of the disease with and without a comorbidity.

Cross breeding of rTg-DI with Spontaneously Hypertensive Stroke Prone …

Chemical Biology Of Dna Adduct Repair, Bypass And Mutagenesis, Rui Qi

Open Access Dissertations

DNA is necessarily to be stable and intact since it is the repository of genetic information in each living cell. However, DNA is not inert, and it is vulnerable to the endogenous and environmental assault including reactive oxygen species (ROS), ultraviolet (UV) light, and various carcinogens. Exposure to these DNA damaging agents is associated with various adducts ranging from small methyl or etheno adducts to bulky adducts such as acetylaminofluorene. These resulting damages, if not repaired, will lead to replication block or mutation which can eventually cause cancer or other genetic diseases. The research covered by this dissertation falls into …

Risk And Protective Factors Associated With Opioid Use After In-Patient Detoxification, Megan M. Drohan

Open Access Dissertations

Objective: To identify risk and protective factors for return to opioid use post inpatient detoxification in a sample of persons with opioid use disorder (OUD).

Design and Methods: This study used data from a larger randomized controlled study following 206 eligible individuals who entered in-patient detoxification for OUD. Participants entered the study as part of the observation arm and were assessed for six months following in-patient detoxification. Timeline follow-back assessment was used to identify if and when participants returned to opioid use post-detoxification. A series of bivariate and multivariate logistic regressions were used to identify risk and protective …

The Text(Tiles) Of Adinkra Symbols: West African Art, Gender, & Poetic Translations, Rachel A. Ansong

Open Access Dissertations

The Text(tiles) of Adinkra Symbols: West African Art, Gender, & Poetic Translations is a critical and creative dissertation that interrogates Adinkra symbols from West Africa. These symbols, rediscovered in the nineteenth century, serve as codes, communicating warnings and meanings of proverbs to recipients. Many individual Adinkra symbols are abstract ideographs of the philosophical ideas they represent. My work expands on existing scholarship and further elaborates how Adinkra symbols moved from Ghana to the United States (U.S). Specifically, I trace how these creative-pictorial-philosophical symbols evolved in use as artistic mediums of expression of African/Black tradition and identity for the migrant African/Black …

Learning To Visualize: Middle-Level Learners Analyzing And Designing Science Infographics, Mark Davis

Open Access Dissertations

Infographics are part of daily life because of the rise of digital media and technology, as learners now encounter a barrage of images carefully designed to convey data and information through social media. But what happens in the classroom when young learners first encounter this expressive genre? This case study examined a unit of instruction on analyzing and creating infographics in a content-area middle school classroom. Data included classroom observations through video and audio recording, examination of a student graphic organizer and student-designed infographics, and semi-structured interviews with students and the facilitating teacher. Results show that students learned how to …

The Impacts Of The Invasive Green Iguana (Iguana Iguana) On Agricultural Production And The Communities Of Puerto Rico — An Interdisciplinary Assessment, Christina N. De Jesus Villanueva

Open Access Dissertations

Invasive species are one of the most pressing threats to the conservation of biodiversity, to human health, and the economy today. Agricultural production and invasive species are often entangled in a complex web of interactions that ultimately decrease agricultural yield and lead to billions of dollars in losses. With no indicators of slowing globalization, it is imperative that we monitor the movement of potential pest species, prevent new introductions, and mitigate the impacts of invasive species. Comprehensive monitoring of potential invasions is not always possible, however, since it is often after a species is established that wildlife management and agricultural …

Acoustic And Optical Imaging Techniques For Characterizing Animal Distributions In The Pelagic Ocean, Benjamin Grassian

Open Access Dissertations

Biological processes in midwater habitats -- ocean areas between the sunlit surface layers and sea floor -- are critical drivers of ocean biogeochemical cycling, oxygen availability, fish population dynamics, and ecological interactions over a wide range of scales. Achieving high-resolution observations of the environmental and biological heterogeneity in the ocean's interior is important for understanding the status and evolution of the earth system at large. Traditional ocean sampling platforms (e.g. net systems, moored and shipboard sensors), are often unable to resolve marine biota at fine (cm-m) scales and over submesoscale (sub-km to kms) survey areas comparable to the relevant variability …

To Scale Dragons: Comprising Things Lost And Two Essays On Fantasy, André V. Katkov

Open Access Dissertations

To Scale Dragons comprises two essays on fantasy and a fantasy manuscript, which together form a critical-creative study of fantasy as a cross-media genre of art. In the first essay, “Fantasy as Hypernatural Art: A Look at the Genre’s Chthulucentric Coalescence,” I provide a theoretical foundation for fantasy as art, looking to key developments in the history of fantasy and fantasy criticism to propose a new set of core properties for fantasy as a fuzzy set, à la Brian Attebery, and defend an understanding of fantasy as the art of constructing and conveying immersive hypernature. In particular, I argue that …

Black Feminist Autoethnography: How Identity Can Affect Peer Review Practices In The College Writing Classroom, Eileen M. James

Open Access Dissertations

This dissertation explores the importance of embodied teaching pedagogy as it relates to peer review practices in the college writing classroom. This work uses autoethnography as a research method, exploring issues of (dis)embodiment and experiences with collaborative learning in classrooms. In addition to a review of applicable literature focused on peer review practices, writing pedagogy, and Black Feminist Autoethnography, this dissertation contains narrative sections from the viewpoint of the subject--a Black woman--as a student, an instructor, and a researcher working to examine her experiences and how they demonstrate the need for embodied approaches in the classroom. The purpose of this …

The Mechanistic And Etiological Link Between Bile Acid Dysregulation And Preterm Birth, Syed Fayaz Ul Haq Hashmi

Open Access Dissertations

Preterm birth (PTB) is the major determinant of perinatal morbidity and mortality, and accounts for the second most common cause of neonatal death across the world. Approximately, one in every ten newborns is born prematurely (before 37 completed weeks of gestation) amounting to an estimated global 15 million premature births every year. Preterm neonates are vulnerable to a wide range of short and long term metabolic, infectious, neurological, and respiratory morbidities. PTB is characterized by different complex multifactorial process manifested by diverse pathogenetic mechanisms. Despite many efforts to understand the timing of parturition, the molecular mechanisms through which PTB is …

The American Lobster (Homarus Americanus) In Narragansett Bay During A Time Of Ecosystem Flux: Temperature, Predation, And Larval Dynamics, Kristin Huizenga

Open Access Dissertations

The American lobster (Homarus americanus) in southern New England sustained a particularly prosperous fishery during the 1980s and 1990s. However, in 2001 lobsters in the region began to decline, leading to the eventual collapse of the fishery in Rhode Island. The Narragansett Bay was no exception to this trend, with the number of lobsters caught by the University of Rhode Island Graduate School of Oceanography weekly fish trawl survey peaking in the 1990s before the decline. Today, few lobsters are caught in the Bay.

This dissertation seeks to identify whether environmental stressors and predators drive lobster populations in …

Bacterial Community Dynamics In Rhode Island Coastal Ecosystems, Zachary Pimentel

Open Access Dissertations

In temperate coastal ecosystems, there are a variety of potential environmental niches and lifestyles for bacteria to occupy, along with constantly changing environmental conditions. Residing in such a diverse environment with broad habitats, bacterial adaptation can be observed at both the community and genome level. For example, an individual strain may acquire new mutations or genes to respond to varying conditions or occupy a new niche. In addition, the taxonomic composition of bacterial communities can shift, resulting in higher abundances of strains specialized for a new condition. In this dissertation, community and genome-level adaptations to varying lifestyles and environmental change …

A Qualitative Study Of Early Adolescents’ Critical Thinking About The Content And Consequences Of Media Violence, Erica Scharrer, Yuxi Zhou

Journal of Media Literacy Education

Research shows that young people are likely to encounter considerable amounts of violence in the media they use. Some of those depictions trivialize the severity of violence. Past studies show that media literacy education can spur critical thinking regarding violent portrayals in media texts. But rarely do prior studies employ qualitative methods to understand how young media audience members reason through the key question of whether media violence is either surprising or concerning. In the current study, an in-school media literacy program is offered to 48 6th graders who provide data in the form of written responses to a number …

An Approach To Creative Media Literacy For World Issues, Abduljalil Nasr Hazaea

Journal of Media Literacy Education

This article introduces an approach to creative media literacy for world issues (WIs) such as Covid-19. In so doing, the article integrates four positions on discourse and media as terrible facets of globalization in the context of critical discourse analysis (CDA). The objectivist position deals with WIs as neutral discourse shared among humanity and distributed through English as an international language and educational media. The ideologist position treats creative media literacy as relations of power between global and local identities in the form of competing discourses associated with WIs. The rhetorical position reveals the hidden strategies used in global media …

Usage Statistics: Project Counter R5 Tr_J1 Report Fy2021 - Journal Requests (Excluding Oa_Gold) By Title, Andrée Rathemacher

Technical Services Reports and Statistics

Project COUNTER R5 Report TR_J1 for the University of Rhode Island for the period from July 1, 2020 - June 30, 2021. The TR_J1 report is defined as "Journal Requests (Excluding OA_Gold)." This report presents an annual total only and only includes those platforms successfully configured for automated harvesting via SUSHI.

File for download is Excel spreadsheet generated by Alma Analytics.

Results:

• Total Item Requests - 696,705
• Unique Item Requests - 513,492

Bioaccumulation Of Pcbs, Ocps And Pbdes In Marine Mammals From West Antarctica, Mohammed Khairy, Emily Brault, Rebecca Dickhut, Karin C. Harding, Tero Harkonen, Olle Karlsson, Kristine Lehnert, Jonas Teilmann, Rainer Lohmann

Graduate School of Oceanography Faculty Publications

To understand the bioaccumulation and food web dynamics of persistent organic pollutants (POPs) as a function of species, age and sex in Antarctic mammals, blubber samples of 3 killer whales (Type C) and 77 pinnipeds (Weddell, Ross and crabeater seals) were collected from the Southern Ocean, Antarctica. They were analyzed for polychlorinated biphenyls (PCBs), organochlorine pesticides (OCPs) and polybrominated diphenyl ethers (PBDEs). ΣDDTs, Σ29PCBs and chlordanes (12 – 4,600, 13 – 1,600, and < 1.5 – 1,700 ng/g lipid, respectively) were the most abundant POPs. Killer whales typically displayed several times greater concentrations of POPs compared to seals, except for PBDEs. PCBs and PBDEs were consistently higher in adult crabeater and Weddell seal males, and in adult female Ross seals than in other sex and age groups reflecting an age accumulation and possible influence of segregated diet, foraging areas, and metabolic transformation rates. POPs concentrations significantly correlated with gene transcription of nuclear receptors involved in detoxification of contaminants and immune relevant cell mediators in the crabeater seals, indicating possible immunotoxic and deleterious health effects. This represents one of the largest studies on POPs in Antarctic marine predators and highlights the complexity of POPs bioaccumulation.

Usage Statistics: Project Counter R5 Ir_M1 Report Fy2021 - Multimedia Item Requests, Andrée Rathemacher

Technical Services Reports and Statistics

Project COUNTER R5 Report IR_M1 for the University of Rhode Island for the period from July 1, 2020 - June 30, 2021. The IR_M1 report is defined as "Multimedia Item Requests." This report presents an annual total only and only includes those platforms successfully configured for automated harvesting via SUSHI.

File for download is Excel spreadsheet generated by Alma Analytics.

Results:

Total Item Requests - 6,292

Editorial: Diversifying Farming Systems For Adaptive Capacity, Margiana Petersen-Rockney, Timothy Bowles, Selena Ahmed, Patrick Baur

Fisheries, Animal and Veterinary Sciences Faculty Publications

No abstract provided.

Gregarine Single-Cell Transcriptomics Reveals Differential Mitochondrial Remodeling And Adaptation In Apicomplexans, Eric D. Salomaki, Kristina X. Terpis, Sonja Rueckert, Michael Kotyk, Zuzana Kotyková Varadínová, Ivan Čepička, Christopher E. Lane, Martin Kolisko

Biological Sciences Faculty Publications

Background: Apicomplexa is a diverse phylum comprising unicellular endobiotic animal parasites and contains some of the most well-studied microbial eukaryotes including the devastating human pathogens Plasmodium falciparum and Cryptosporidium hominis. In contrast, data on the invertebrate-infecting gregarines remains sparse and their evolutionary relationship to other apicomplexans remains obscure. Most apicomplexans retain a highly modified plastid, while their mitochondria remain metabolically conserved. Cryptosporidium spp. inhabit an anaerobic host-gut environment and represent the known exception, having completely lost their plastid while retaining an extremely reduced mitochondrion that has lost its genome. Recent advances in single-cell sequencing have enabled the first broad genome-scale …

Editorial: Conflicts And Compromises Between Food Safety Policies And Environmental Sustainability, Patrick Baur, Janne Lundén, Michele Jay-Russell

Fisheries, Animal and Veterinary Sciences Faculty Publications

No abstract provided.

An Analysis Of Companion Animal Tick Encounters As Revealed By Photograph-Based Crowdsourced Data, Heather L. Kopsco, Roland J. Duhaime, Thomas N. Mather

Plant Sciences and Entomology Faculty Publications

Background: Community science is increasingly utilized to track important vectors of companion animal disease, providing a scalable, cost-effective strategy for identifying new foci, changing phenology, and disease prevalence across wide geographies. Objectives: We examined photographs of ticks found attached to predominately dogs and cats reported to a photograph-based tick surveillance program to identify potential areas for improvements in tick prevention education and risk intervention. Methods: We compared estimated days of tick attachment using a Kruskal–Wallis one-way analysis of variance, and a Pearson's chi-square analysis of variance on the number of submissions by host type submitted for each season. Results: The …

Treprostinil Alleviates Hepatic Mitochondrial Injury During Rat Renal Ischemia-Reperfusion Injury, Joyce Hou, Tolbert, Mark Birkenbach, Nisanne S. Ghonem

Pharmacy Practice and Clinical Research Faculty Publications

Background: Renal ischemia-reperfusion injury (IRI) causes acute kidney injury as well as liver injury. Renal IRI depletes hepatic antioxidants, promotes hepatic inflammation and dysfunction through Tlr9 upregulation. There is no treatment available for liver injury during renal IRI. This study examines the hepatoprotective role of treprostinil, a prostacyclin analog, during renal IRI. Methods: Male Sprague-Dawley rats were divided into four groups: control, sham, IRI-placebo, or IRI-treprostinil and subjected to bilateral ischemia (45 min) followed by reperfusion (1–72 h). Placebo or treprostinil (100 ng/kg/min) was administered subcutaneously via an osmotic minipump. Results: Treprostinil significantly reduced peak serum creatinine, BUN, ALT and …

Multiple Melt Source Origin Of The Line Islands (Pacific Ocean), Robert Pockalny, Ginger Barth, Barry Eakins, Katherine A. Kelley, Christina Wertman

Graduate School of Oceanography Faculty Publications

The Line Islands volcanic chain in the central Pacific Ocean exhibits many characteristics of a hotspot-generated seamount chain; however, the lack of a predictable age progression has stymied previous models for the origin of this feature. We combined plate-tectonic reconstructions with seamount age dates and available geochemistry to develop a new model that involves multiple melt regions and multiple melt delivery styles to explain the spatial and temporal history of the Line Islands system. Our model identifies a new melt source region (Larson melt region at ~17°S, ~125°W) that contributed to the formation of the Line Islands, as well as …

A Visual Tour Of Carbon Export By Sinking Particles, Colleen A. Durkin, Ken O. Buesseler, Ivona Cetinić, Margaret L. Estapa, Roger P. Kelly, Melissa Omand

Graduate School of Oceanography Faculty Publications

To better quantify the ocean's biological carbon pump, we resolved the diversity of sinking particles that transport carbon into the ocean's interior, their contribution to carbon export, and their attenuation with depth. Sinking particles collected in sediment trap gel layers from four distinct ocean ecosystems were imaged, measured, and classified. The size and identity of particles was used to model their contribution to particulate organic carbon (POC) flux. Measured POC fluxes were reasonably predicted by particle images. Nine particle types were identified, and most of the compositional variability was driven by the relative contribution of aggregates, long cylindrical fecal pellets, …

The “Sweet Spot” In The Middle: Why Do Mid-Scale Farms Adopt Diversification Practices At Higher Rates?, Kenzo Emiliano Esquivel, Liz Carlisle, Alison Ke, Elissa M. Olimpi, Patrick Baur, Joanna Ory, Hannah Waterhouse, Alastair Iles, Daniel S. Karp, Claire Kremen, Timothy M. Bowles

Fisheries, Animal and Veterinary Sciences Faculty Publications

In the past few decades, farmers and researchers have firmly established that biologically diversified farming systems improve ecosystem services both on and off the farm, producing economic benefits for farmers and ecological benefits for surrounding landscapes. However, adoption of these practices has been slow, requiring a more nuanced examination of both barriers and opportunities to improve adoption rates. While previous research has demonstrated that both individual and structural factors shape farmers' decisions about whether to adopt diversification practices, this study aims to understand the interaction of these individual and structural factors, and how they relate to farm scale. Based on …