Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Social and Behavioral Sciences (1304)
- Arts and Humanities (1240)
- Physical Sciences and Mathematics (1123)
- Life Sciences (685)
- Engineering (632)
-
- Communication (312)
- Mathematics (309)
- Education (307)
- Analysis (289)
- Music (289)
- Other Mathematics (287)
- History (265)
- Psychology (259)
- Philosophy (230)
- Mass Communication (223)
- Environmental Sciences (209)
- Civil and Environmental Engineering (208)
- Aesthetics (203)
- Biology (177)
- Chemistry (171)
- Medicine and Health Sciences (170)
- Business (168)
- Geography (168)
- Oceanography and Atmospheric Sciences and Meteorology (162)
- Anthropology (157)
- Sociology (128)
- Earth Sciences (123)
- Chemical Engineering (119)
- Political Science (114)
- Agriculture (112)
- Keyword
-
- Education (386)
- General (206)
- Biology (126)
- Business administration (124)
- History (124)
-
- Literature (116)
- Louisiana (106)
- Obesity (104)
- Economics (103)
- Music (85)
- Climate change (78)
- Physical (76)
- Psychology (74)
- Agriculture (72)
- Gravitational waves (70)
- Engineering (69)
- Sociology (65)
- Modern (60)
- Chemistry (55)
- Yearbook (53)
- Gumbo (50)
- Gumbo yearbook (50)
- Louisiana state university (50)
- Lsu yearbook (50)
- University archives (50)
- Theater (49)
- Accounting (48)
- Speech communication (46)
- Accretion (43)
- Gulf of Mexico (43)
- Publication Year
- Publication
-
- Faculty Publications (7310)
- LSU Doctoral Dissertations (2034)
- LSU Historical Dissertations and Theses (1737)
- LSU Master's Theses (1626)
- Honors Capstones (755)
-
- Civil War Book Review (370)
- 1650-1850: Ideas, Aesthetics, and Inquiries in the Early Modern Era (199)
- Clinical Research Faculty Publications (182)
- Division of Basic Science Faculty Publications (158)
- Journal of Stochastic Analysis (156)
- Population and Public Health Science Faculty Publications (148)
- Communications on Stochastic Analysis (132)
- LSU Agricultural Experiment Station Reports (132)
- Taboo: The Journal of Culture and Education (105)
- Publications (55)
- Gumbo Yearbook (50)
- LSU General Catalog (50)
- The Journal of Balanced Literacy Research and Instruction (39)
- Tête à Tête: Journal of Francophone Studies (38)
- 2026 LSU Symposium on Control, Learning, and Intelligent Systems (31)
- LSU Faculty Senate Publications (31)
- LSU Fashion and AI x Policy Symposium (27)
- College of Engineering Patents (26)
- Louisiana Agriculture (21)
- Distinguished Undergraduate Researcher Program (20)
- LSU Press Seasonal Catalogs (20)
- Student Senate Enrolled Legislation (20)
- Comparative Woman (17)
- Friends of the LSU Libraries (15)
- LSU Major Papers (15)
- Publication Type
- File Type
Articles 91 - 120 of 15687
Full-Text Articles in Entire DC Network
Exploring Sequential Technical Practices Towards Skill Development And Musical Expression In Violin Performance And String Pedagogy Methods, Erin Kim
LSU Doctoral Dissertations
This dissertation proposes the Erin Kim System, a pedagogical framework designed to support sequential technical development and musical expression in beginning, intermediate, and advanced levels of violin performance. This system examines how structured technical progression, guided repertoire sequencing, and a nurturing learning environment with the teacher and parents can foster skill acquisition and long-term musical engagement among violin students. Musical enjoyment and inspiration serve as primary motivators for learning, particularly when students are encouraged to work toward performing aspirational repertoire such as the Sibelius Violin Concerto. By organizing repertoire and supplemental exercises in a clear step-by-step process, this system enables …
2024-2025 Ecei Annual Report, Cynthia Dicarlo
2024-2025 Ecei Annual Report, Cynthia Dicarlo
Early Childhood Education Institute Annual Reports
No abstract provided.
Who Let The Werewolves Into The Manuscripts: Written And Pictorial Representations Of Werewolves In English Manuscripts, Allison Slowiak
Who Let The Werewolves Into The Manuscripts: Written And Pictorial Representations Of Werewolves In English Manuscripts, Allison Slowiak
LSU Master's Theses
The werewolf – a fictional figure that transforms from human to wolf – serves as a compelling example of how medieval thought shaped ideas about identity and transformation. The motif of the werewolf, present in a small corpus of works from the tenth through the fourteenth century, emerged to explore the limits of change while also comparing the likeness of humanity to its animal counterpart. This paper explores medieval literature - Beowulf, Bisclavret, Biclarel, and Melion – from both French or English descent to offer overlapping and contrasting thoughts about human likeness to wolves. The manuscripts - The Nowell Codex, …
Just City And Racialized Media: How A Non-Profit Provokes Policy And Fights Criminal Injustices, Isabella L. Wollfarth
Just City And Racialized Media: How A Non-Profit Provokes Policy And Fights Criminal Injustices, Isabella L. Wollfarth
LSU Master's Theses
This study explored the intersection of racialized media narratives, nonprofits, and penal policy through a case study of Just City, a nonprofit criminal justice organization located in Shelby County, Tennessee. Through the lens of Just City, this study explored how nonprofits resist racialized media narratives regarding crime and how in turn this contributes to penal policy reforms. This is accomplished using a thematic analysis to draw larger conclusions from coding Just City’s Instagram and through extensive interviews with Just City staff and local Shelby County and Tennessee politicians. These methods are guided by framing theory, an ideological framework that explains …
In The Realm Of Dreams: The Feminine Imagination In Music, Katie Scarlett Ellender
In The Realm Of Dreams: The Feminine Imagination In Music, Katie Scarlett Ellender
LSU Doctoral Dissertations
This project examines selected works by Clara Schumann, Rebecca Clarke, and Lili Boulanger that contain representations of night, dream, and mythology. These composers were influenced by the prevailing artistic movements during their lives, including German Romanticism, Impressionism, and Symbolism, which emphasized nocturnal landscapes, supernatural beings, and liminal states. Descriptive analysis and performance recommendations are provided for selected Lieder by Clara Schumann, Rebecca Clarke’s Morpheus, and Lili Boulanger’s Nocturne. Particular emphasis is given to how each composer uses night, dream, and myth imagery as expressive frameworks that inform decisions on harmonic language, level of cadential resolution, motivic repetition and transformation, texture, …
The Living Archive: Photography, Social Media, And The New Frontier Of Activism, Lundyn C. Herring
The Living Archive: Photography, Social Media, And The New Frontier Of Activism, Lundyn C. Herring
LSU Master's Theses
This thesis seeks to analyze the discursive field and technology of photography and its multi-faceted role in the oppression of colonized people under Western imperialism. Among the main collection highlights of many established state-run archival institutions are photographic records consisting of surveillance images, mugshots, and other visual media as representations of the political hegemony that is exerted over governed peoples. From the mid-19th century to 2026, much has shifted in the realm of photography with the introduction of smartphones, accessible technology, and social media platforms during the beginning of the twenty-first century. As states and powerholders apply the technology of …
Wearable Sensor System Used To Measure Linear And Angular Acceleration Of The Head Of American Football Players, David A. Emerson
Wearable Sensor System Used To Measure Linear And Angular Acceleration Of The Head Of American Football Players, David A. Emerson
LSU Master's Theses
American football players are repeatedly subject to high-velocity impacts; collisions can exceed 100 g in the NFL [1]. Rotational accelerations of the head caused by high-velocity collisions have been proven to be extremely damaging to the highly organized brain fibers at the brain-skull interface [2]. The sensor system (SS) measures the nonplanar acceleration at four locations on a chin strap using ADXL314 accelerometers and utilizes rigid-body kinematics to estimate the head rotational state from the measured acceleration of the SS [3]. The SS was validated through progressive testing, including steady-state, linear impact, and rotational impact testing. The ADLX314 sensor exhibited …
Transcribing Shakuhachi Honkyoku For Bassoon: Notation, Orality, And Perfomance Practice, Adrian Fonseca Tellez
Transcribing Shakuhachi Honkyoku For Bassoon: Notation, Orality, And Perfomance Practice, Adrian Fonseca Tellez
LSU Doctoral Dissertations
This project consists of transcriptions of two pieces from the shakuhachi honkyoku (“original pieces”) repertoire, Kumoi Jishi (Cloud Lion) and Sanya Sugagaki (Three Valleys), with the aim of extending the bassoon’s repertoire outside of the Western canon while exploring the capabilities of the bassoon to emulate the performance practices of the shakuhachi, which include both extended techniques found in current bassoon literature as well as techniques unique to shakuhachi performance. Included in the written document is a brief overview of the shakuhachi and its applications in traditional Japanese music, a description of honkyoku and its characteristics, and the Japanese concept …
Teaching And Performing Ginastera: A Stylistic And Pedagogical Exploration Of Ginastera’S Pampeana No. 1, Paula Toral Navarro
Teaching And Performing Ginastera: A Stylistic And Pedagogical Exploration Of Ginastera’S Pampeana No. 1, Paula Toral Navarro
LSU Doctoral Dissertations
This project examines Alberto Ginastera’s Pampeana No. 1 for violin and piano through both stylistic performance and pedagogy approach. The research has two primary objectives: (1) to propose a performance perspective that draws on traditional Argentine musical idioms alongside Western classical practice, and (2) to create a pedagogical guide that supports the development of the technical and stylistic skills required for the work, including a sequence of preparatory pieces. The written document provides an overview of Ginastera’s life, including cultural and political context and an examination of his compositional style within his nationalist period. It also examines selected elements of …
“Where All Is Playtime And Pleasure”: Feeling The Otherworldly In Late Medieval Literature, Anna K. Mcgill
“Where All Is Playtime And Pleasure”: Feeling The Otherworldly In Late Medieval Literature, Anna K. Mcgill
LSU Doctoral Dissertations
In this dissertation, I present intra-, inter-, and extra-textual felt responses to encounters with the otherworldly as described in Late Medieval texts as a lens through which to consider personal, social, and national imaginative potential surrounding contemporary issues across genres and disciplines. I argue that the use of otherworlds and otherworldly agents as both personally and rhetorically compelling analogues through which contemporary issues can be explored. I start my discussion of the felt impacts of encounters with the Arthurian otherworldly, with a particular focus on Glastonbury and Arthur’s alleged grave there, and how they transmit affects of sovereign authority. Next, …
Acquiring Egypt: Napoleon, Joséphine, And The Formation Of France’S Collections Of Egyptian Antiquities, 1792-1822, Anna E. Dow
Acquiring Egypt: Napoleon, Joséphine, And The Formation Of France’S Collections Of Egyptian Antiquities, 1792-1822, Anna E. Dow
LSU Doctoral Dissertations
This dissertation examines the seizure and acquisition of Egyptian antiquities by the French government between 1792 and 1822. During this period, the French government seized antiquities for a variety of reasons, not the least of which was to benefit the French people politically and financially and to support the French ideals of art and civilization. Egyptian antiquities were collected almost accidentally, as French armies confiscated the collections of the wealthy in Paris and the aristocratic collections in Italy. But the presence of the art prompted the curiosity of the French, which led to a greater interest in Egyptian antiquities. However, …
Spatial Narrative Beyond The Proscenium: Set Design As A Tool For Wellness, Christina Griffey
Spatial Narrative Beyond The Proscenium: Set Design As A Tool For Wellness, Christina Griffey
LSU Master's Theses
Inspired by a health crisis that led to spending time in medical settings, this thesis examines how our surroundings impact our well-being. By developing a framework that explores the topics of storytelling, space, place, theatre, and expanded scenography, I propose that set design can be used as a tool for wellness. I explore several disciplines through the lens of set design and highlight the disciplines, professionals, and designers that are contributing to the creation of therapeutic environments using scenographic practices.
An Analysis And Performer's Guide Of Boulder Canyon, Hoover Dam By Clark Hubbard, Tyler Hawk
An Analysis And Performer's Guide Of Boulder Canyon, Hoover Dam By Clark Hubbard, Tyler Hawk
LSU Doctoral Dissertations
Clark Hubbard is currently the Assistant Director of the Vanderbilt Marching and Athletic Bands. He is active as an American percussionist, composer, artist, and educator. His compositions have been performed throughout the United States and overseas, including solo, chamber, percussion, and electronic compositions. This document aims to analyze Boulder Canyon, Hoover Dam, discussing how the fixed media influences musical decisions. This document is also a performer’s guide for the piece.
Percussion with fixed media has been composed for since the early to middle 1900s. Inspiration from the techniques and early pieces of fixed media composition can be found in …
Key Elements Of Mission-Based Urban Agriculture In The United States Aimed At Addressing The Social Determinants Of Health, Jordan Losavio
Key Elements Of Mission-Based Urban Agriculture In The United States Aimed At Addressing The Social Determinants Of Health, Jordan Losavio
LSU Doctoral Dissertations
Urban agriculture (UA) in the United States (U.S.) is increasingly positioned as a multi-domain strategy for addressing social determinants of health (SDOH), yet evidence is fragmented and often focused on participant outcomes rather than the organizational and environmental conditions that determine whether those benefits can be sustained, expanded, or maintained over time. This dissertation uses an exploratory sequential mixed-methods design to clarify (1) what SDOH outcomes are associated with UA in the peer-reviewed literature, (2) which internal and external factors leaders perceive as driving UA organizational success or failure, and (3) which factors predict comparative organizational functioning across a national …
Polymer Microstructures For Advanced Biomanufacturing, Tongyao Wu
Polymer Microstructures For Advanced Biomanufacturing, Tongyao Wu
LSU Doctoral Dissertations
With the continued growth of the biopharmaceutical industry, the demand for scalable, robust, and resource-efficient platforms for large-scale mammalian cell culture is amplified. Recent developments in microfluidic technology, such as precise control of the microenvironment, showed the potential to improve the performance of cell culture systems. However, constrained by scalability and operational efficiency, applying such approaches to large-scale cell culture and biopharmaceutical production presents challenges. This dissertation addresses these challenges through three independent but conceptually related technological developments. First, a roll-to-roll (R2R) fabrication process was developed for the scalable production of hollow microcarriers (HMCs). HMCs provide three-dimensional microenvironments suitable for …
Biogeochemical Controls On Phosphorus Transport And Legacy Storage Across A Coastal Watershed, Lee Potter
Biogeochemical Controls On Phosphorus Transport And Legacy Storage Across A Coastal Watershed, Lee Potter
LSU Doctoral Dissertations
Excess phosphorus (P) loading is a key driver of eutrophication and harmful algal blooms (HABs) in aquatic systems worldwide. This relationship is of increasing concern in coastal Louisiana, where climate variability, altered hydrology, and land-use change converge, resulting in increased hydrologic and nutrient loading into coastal systems. This dissertation examines controls on P cycling in the Lake Pontchartrain Basin through a multi-scale framework linking estuarine processes, watershed loading, climate and weather patterns, and sediment dynamics. The dissertation begins with an overview of the study region, P dynamics, and changes in hydrology and nutrient loading patterns. Chapter 2 presents a spatial …
Engaging Underrepresented 11- To 14-Year-Olds In Music: An Autoethnographic Case Study Of A New Inner-City Afterschool Group Piano Program, Eden A. Brown
LSU Doctoral Dissertations
Research in music education has documented the underrepresentation of Black students in formal music study in the United States, shaped by economic and cultural barriers (Elpus & Abril, 2024; Alegrado & Winsler, 2020). Access to piano instruction is often limited by the high cost of lessons and instruments, inequitable school funding, and the absence of culturally responsive curricula that reflect the experiences of minority students and families. Traditional piano pedagogy rarely addresses this absence, leaving the piano both symbolically and practically distant for many potential musicians in the United States. This autoethnographic case study chronicles the development, launch, and first …
"By The Sweat Of His Brow"?: Master Mechanics And Class Position In Antebellum New Orleans, Caleb G. Roark
"By The Sweat Of His Brow"?: Master Mechanics And Class Position In Antebellum New Orleans, Caleb G. Roark
LSU Master's Theses
This thesis argues that New Orleans’s skilled laborers profited alongside or from enslaved laborers. Proponents of free labor ideology, largely relegated to the North, charged that the skilled mechanic was the prototypical “free laborer.” In contemporary and modern portrayals, the systems of free and enslaved labor were considered antithetical. This thesis posits that these views are incorrect. Free and enslaved labor flourished together in the Crescent City. Despite their absence in historical understandings of the antebellum South, skilled laborers succeeded in New Orleans. I track societal debates across Louisiana’s newspapers concerning the status and success of mechanics across the state. …
Minimal Supersolution Of Bsdes Driven By Continuous Martingales In A General Filtration, Badr Elmansouri, Mohamed El Otmani
Minimal Supersolution Of Bsdes Driven By Continuous Martingales In A General Filtration, Badr Elmansouri, Mohamed El Otmani
Journal of Stochastic Analysis
In this paper, we study minimal supersolutions of backward stochastic differential equations (BSDEs) driven by a continuous local martingale in a general filtration. We establish existence, uniqueness, and stability results under various mild conditions on the terminal value and the generator. Additionally, we explore the connection between the concept of non-linear expectation and minimal supersolutions, emphasizing the specific properties that are relevant to our framework. We also prove a general monotonic limit theorem and apply this result to determine the smallest constrained supersolution of a BSDE with a possibly non-convex constraint.
An Examination Of Trends And Factors Influencing Teen Retention In 4-H Youth Development Program: A Case Study, Bethany R. Corona
An Examination Of Trends And Factors Influencing Teen Retention In 4-H Youth Development Program: A Case Study, Bethany R. Corona
LSU Master's Theses
Teen participation in 4-H has declined nationally in recent years, raising concerns about long-term program sustainability and youth engagement. Understanding the factors that influence teens’ decisions to remain involved in 4-H is critical for informing program design and delivery. Guided by the theory of planned behavior, this qualitative study explored teen perceptions of 4-H programming, youth voice, social influences, communication, and barriers to participation. Data were collected through two group interviews with teen 4-H members representing multiple parishes. Interviews were audio recorded, transcribed verbatim, and analyzed using the constant comparative method through a three-phase coding process consisting of open, axial, …
Biomechanical Trade-Offs Between Root Tensile Strength And Porosity In Coastal Marshes, M. O. Hassan, N. H. Jafari, A. S. Rovai, R. R. Twilley
Biomechanical Trade-Offs Between Root Tensile Strength And Porosity In Coastal Marshes, M. O. Hassan, N. H. Jafari, A. S. Rovai, R. R. Twilley
Faculty Publications
Root biomechanics play a fundamental role in stabilizing wetland soils and sustaining coastal ecosystems under increasing environmental stress. This study investigates the tensile strength (TS) and internal porosity (n) of roots from two dominant marsh grasses, Spartina alterniflora and Spartina patens, across four sites in the Mississippi River Delta Plain (MRDP), spanning active (Atchafalaya) and inactive (Terrebonne) basins. Through approximately 300 tensile strength tests conducted on live roots across diameter classes and depths, we observed a consistent decline in strength with increasing root diameter and depth. Fine roots (< 2 mm), particularly those in the upper 15 cm, showed the highest tensile resistance, reinforcing their critical role in erosion control. To assess morphological drivers, we employed high-resolution scanning electron microscopy (SEM) with a machine learning (ML) segmentation pipeline to quantify porosity and visualize aerenchyma. Coarse roots exhibited significantly higher porosity due to large central lumens and expanded aerenchyma, while fine roots maintained denser tissue structures. An exponential decay relationship emerged between porosity and tensile strength, indicating a trade-off: increased void space enhances oxygen diffusion in waterlogged soils but compromises mechanical integrity. This inverse relationship was most pronounced in saline environments, suggesting that stress amplifies structural compromises in root traits. This integrative approach, combining precision mechanical testing, advanced imaging, and ML-based analysis, provides a scalable and reproducible framework for characterizing root biomechanics. Findings advance understanding of plant contributions to belowground stability in coastal wetlands and offer practical insights for restoration strategies to enhance shoreline resilience.
Dynamical Analysis Of A Stochastic $Sei_{U}I_{R}Rs$ Epidemic Model With Vaccination And Log-Normal Ornstein-Uhlenbeck Process, Qun Liu
Faculty Publications
In this study, we develop and investigate a stochastic $SEI_{u}I_{r}RS$ (Susceptible-Exposed-Undetected infected-Detected infected-Recovered-Susceptible) epidemic model with vaccination of newborns and the disease transmission rate driven by a log-normal Ornstein-Uhlenbeck process. By establishing a series of Lyapunov functions, we derive sufficient conditions for persistence in the mean of the disease in the long term under the condition $\mathcal{R}_{0}>1$ and these criteria are applied to guarantee the existence of an invariant probability measure of the stochastic system. Subsequently, we also derive sufficient conditions for eradication of the disease when the parameters $\mathcal{R}_{0}< 1$ and $\mathcal{R}_{0}^{E}< 1$. Finally, two numerical examples are given to confirm the theoretical results. This work can help us implement interventions to regulate the disease dynamics.
Qatt&Ck: An Extended Framework For Classifying Adversarial Techniques And Tactics Threatening Quantum Computing Infrastructure Based On Mitre’S Att&Ck, Justin Benjamin Woodring
Qatt&Ck: An Extended Framework For Classifying Adversarial Techniques And Tactics Threatening Quantum Computing Infrastructure Based On Mitre’S Att&Ck, Justin Benjamin Woodring
LSU Master's Theses
The integration of quantum computing into governmental and business processes has raised concerns about potential threats to these systems. To address this, we introduce a novel extension of the MITRE ATT&CK framework, QATT&CK, which provides an extended taxonomy for classifying adversarial Tactics and Techniques in quantum cybersecurity. Our adapted framework bridges the definitions of traditional cybersecurity with a focus on quantum computing infrastructure, enabling a more comprehensive understanding of adversarial behavior in this domain. To evaluate our proposed framework, we leverage current and ongoing research in quantum cyber threats, mapping real-world attacks to our taxonomy to demonstrate its effectiveness in …
Arbitrage-Free Pricing With Diffusion-Dependent Jumps, Hamza A. Virk, Yihren Wu, Majnu John
Arbitrage-Free Pricing With Diffusion-Dependent Jumps, Hamza A. Virk, Yihren Wu, Majnu John
Journal of Stochastic Analysis
Standard jump-diffusion models assume independence between jumps and diffusion components. We develop a multi-type jump-diffusion model where jump occurrence and magnitude depend on contemporaneous diffusion movements. Unlike previous one-sided models that create arbitrage opportunities, our framework includes upward and downward jumps triggered by both large upward and large downward diffusion increments. We derive the explicit no-arbitrage condition linking the physical drift to model pa- rameters and market risk premia by constructing an Equivalent Martingale Measure using Girsanov’s theorem and a normalized Esscher transform. This condition provides a rigorous foundation for arbitrage-free pricing in models with diffusion-dependent jumps.
Effects Of A Group Contingency Arrangement Of Synchronous Reinforcement On Disruptive Behavior In Elementary Classes, Gabriela Gomes
Effects Of A Group Contingency Arrangement Of Synchronous Reinforcement On Disruptive Behavior In Elementary Classes, Gabriela Gomes
LSU Master's Theses
Synchronous schedules of reinforcement are a type of schedule of covarion in which the onset and offset of the response are aligned with the onset and offset of the reinforcer. In this study, we used multiple baseline across classes and reversal designs to determine the effects of a synchronous reinforcement schedule, arranged as a group contingency, on disruptive classroom behavior and time spent following rules during independent work periods in three elementary classrooms: 2 first grade and 1 fourth grade. Additionally, we compared the effects of a synchronous reinforcement schedule with a continuous noncontingent schedule in the fourth-grade classroom. The …
Improving Stem Assessments: Strategies For Increasing The Accessibility And Adoption Of Two-Stage Exams, Kristina Callaghan
Improving Stem Assessments: Strategies For Increasing The Accessibility And Adoption Of Two-Stage Exams, Kristina Callaghan
LSU Doctoral Dissertations
Over three decades of research have shown that students taught using active learning strategies achieve better learning outcomes compared to those taught using traditional methods. Two-stage exams, which pair a traditional exam with a group component, are an increasingly popular method for incorporating active learning within the assessment component of a course. Previous studies have shown this assessment strategy provides a variety of benefits for students, including increased engagement and collaboration, immediate feedback, and potentially increased content retention. However, the unique circumstances of each instructor can pose a non-trivial barrier to the implementation of two-stage exams. In this thesis, we …
Decoupling Of Reproduction And Lifespan Trade-Off In Caenorhabditis Elegans Through Microbial Programming, Nora M. Villafuerte
Decoupling Of Reproduction And Lifespan Trade-Off In Caenorhabditis Elegans Through Microbial Programming, Nora M. Villafuerte
LSU Master's Theses
The microbiome is increasingly recognized as a major regulator of host physiology. Using the Caenorhabditis elegans model, we investigated how natural commensal bacteria modulate host reproduction and lifespan through internal egg hatching, a phenotype in which retained embryos hatch within the maternal body. Screening strains from the CeMbio collection identified four focal strains Ochrobactrum BH3, Lelliottia JUb66, Pantoea BIGb0393, and Enterobacter CEent1 that significantly increased internal egg hatching during the late reproductive period. This contrasts with pathogenic bacteria, which induce early-onset internal egg hatching. Across the focal strains, worms exhibited reduced total brood size but an expanded reproductive window relative …
Metacommunity Coupled Epidemiological And Biophysical Modeling Of An Emergent Coral Disease, Benjamin Holmes Farmer
Metacommunity Coupled Epidemiological And Biophysical Modeling Of An Emergent Coral Disease, Benjamin Holmes Farmer
LSU Doctoral Dissertations
Emerging infectious diseases pose imminent risk to the marine realm and coral reefs in particular. Since its emergence in 2014, stony coral tissue loss disease (SCTLD) has dramatically reduced living coral cover in Florida and charted a similar course in the Caribbean. SCTLD is by far the most severe coral disease in history and has driven highly susceptible species to local extinction, yet the mechanisms driving the regional epizootic are not well understood. Here, we developed reef-scale parameterizations of disease spread using model sites in the lower Florida Keys, developed extensive metacommunity habitat maps for the US Caribbean, and then …
Legacy Phosphorus Dynamics In Subtropical River Sediments: Impacts Of Dredging And Water Column Aeration Status, Lee Potter, John R. White
Legacy Phosphorus Dynamics In Subtropical River Sediments: Impacts Of Dredging And Water Column Aeration Status, Lee Potter, John R. White
Faculty Publications
Excessive loading of phosphorus (P) in coastal systems has been a growing concern for watershed managers due to the link with harmful algal blooms. In particular, legacy P creates a persistent challenge for eutrophication management in a range of aquatic systems, including wetlands, lakes, and estuaries, as a source of indirect, internal P loading. Following reductions in external P loads, internal sediment sources have been known to release bioavailable P back into the water column, undermining nutrient restoration goals. This study investigates the flux dynamics and longevity of sediment legacy P in three subtropical rivers—Amite, Tangipahoa, and Tickfaw—draining into the …
Increasing Wave Heights In The Gulf Of Mexico Driven By Swell Waves, Jesbin George, Matthew Hiatt, Clinton S. Willson
Increasing Wave Heights In The Gulf Of Mexico Driven By Swell Waves, Jesbin George, Matthew Hiatt, Clinton S. Willson
Faculty Publications
This study analyzes the climatology, spatial and temporal trends of wind speeds and significant wave height (Hs) of combined wind-seas and swells and Hs of separated swells and wind-seas on annual and seasonal scales in the Gulf of Mexico (GoM) using 50 years of atmospheric reanalysis data. The Hs data showed strong agreement with in-situ measurements, with minimal bias (+/-< 0.08 m) and high correlation (r > 0.9) across both deep and shallow regions, although a slight underestimation is noted for wind speed data. Wind speeds showed seasonal variability in the GoM, though they did not exhibit significant long-term increases, except for a notable decrease (~ -1.0 …