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Beyond Ssris: Omega-3 Fatty Acids And The Neurobiology Of Impulsivity In Borderline Personality Disorder, Sujean Doo Jan 2026

Beyond Ssris: Omega-3 Fatty Acids And The Neurobiology Of Impulsivity In Borderline Personality Disorder, Sujean Doo

Scripps Senior Theses

Impulsivity is a central and clinically significant dimension of Borderline Personality Disorder (BPD), and is strongly associated with self-harm, aggression, and suicide risk. Despite its prognostic importance, pharmacologic management of impulsivity in BPD remains inconsistent. Selective serotonin reuptake inhibitors (SSRIs) are frequently prescribed; however, randomized controlled trials demonstrate limited efficacy for impulsive-aggression, and some patients experience a paradoxical behavioral activation. Meta-analytic and systematic reviews further suggest that mood stabilizers and second-generation antipsychotics may outperform antidepressants, yet no specific medication is indicated to target impulsive behavioral dyscontrol.

This thesis synthesizes findings from systematic reviews, randomized trials, and neuroimaging research to evaluate …


The Rise Learning Theory: A New Paths-Way For Teaching Social Emotional Learning Curricula, Rebecca L. Demeo Jan 2026

The Rise Learning Theory: A New Paths-Way For Teaching Social Emotional Learning Curricula, Rebecca L. Demeo

Scripps Senior Theses

This study aims to look at the effectiveness of the Promoting Alternative THinking Strategies (PATHS) Social Emotional Learning curriculum when taught through the second and fourth principles of the RISE learning theory. The implementation will take effect within United States elementary schools, and consenting students will participate in the quasi-experimental design where classrooms will either be assigned to the control group, PATHS program taught as normal, or the experiment, PATHS taught with the RISE principles. During the study, participants will complete pre-experiment, post-experiment, and follow-up assessments to measure differences in mean scores of competence and application throughout the implementation. I …


The Effects Of The Opioid Crisis On Contraceptive Decisions And Fertility In Pakistan, Simren R. Khan Jan 2026

The Effects Of The Opioid Crisis On Contraceptive Decisions And Fertility In Pakistan, Simren R. Khan

Scripps Senior Theses

This paper examines how the opioid epidemic influences household fertility behavior in Pakistan by analyzing contraceptive use and fertility outcomes across regions with differing levels of opioid prevalence. Using household-level data from the 2017–18 Pakistan Demographic and Health Survey (DHS) and estimating OLS regression models, the study compares households in high-prevalence regions with those in low-prevalence regions. The results show that exposure to high-opioid regions is associated with lower fertility outcomes and a higher likelihood of respondents wanting their last child. These patterns suggest that households may respond to opioid-related economic and caregiving burdens by limiting family size and treating …


The Dunning-Kruger Effect In Sixth Grade Adolescents: Improving Metacognition For Self-Regulated Learning, Julie H. Chen Jan 2026

The Dunning-Kruger Effect In Sixth Grade Adolescents: Improving Metacognition For Self-Regulated Learning, Julie H. Chen

Scripps Senior Theses

The Dunning-Kruger (DK) effect is a cognitive bias where low-performing individuals overestimate their own abilities, and top-performing individuals underestimate their own abilities relative to their peers. The purpose of this proposed study is to investigate the DK effect in sixth grade adolescents and to use metacognition as an intervention to improve self-assessment calibrations. This study will investigate adolescents in Piaget’s formal operational stage, aiming to improve metacognition levels. The study will occur over 12 weeks, and participants will be given a preparation handbook with or without metacognition activities for the purpose of preparing for the California Assessment of Student Performance …


An Analysis Of Eating Disorders As A Comorbidity Of Autoimmune Diseases, Madeleine Shore Jan 2026

An Analysis Of Eating Disorders As A Comorbidity Of Autoimmune Diseases, Madeleine Shore

Scripps Senior Theses

For many autoimmune disease patients, psychiatric conditions are a common comorbidity. Although there are many shared mechanisms between autoimmune disease and psychiatric conditions, current research surrounding mental health among autoimmune disease patients often focuses on mood disorders rather than eating disorders. Despite the high risk for developing psychiatric conditions, most autoimmune disease patients are not screened for eating disorders. This lack of screening is significant, because if an eating disorder is missed by a healthcare provider, the autoimmune or eating disorder condition could be exacerbated, resulting in severe illness or even fatality. Given an existing link between comorbid psychiatric disorders, …


Effects Of Teacher Training On Identifying Inattentive Type Adhd In Afab Students, Gabrielle A. Boles Jan 2026

Effects Of Teacher Training On Identifying Inattentive Type Adhd In Afab Students, Gabrielle A. Boles

Scripps Senior Theses

Teachers are more likely to detect hyperactive ADHD symptoms than inattentive ones, which often results in students, especially girls with inattentive symptoms, being under-referred (Willcut, 2012). This study evaluates whether a targeted, inattentive-focused, and gender responsive teacher training reduces gendered and symptom-based biases in referral decisions. K-5 teachers will be randomly assigned to receive either standard general ADHD identification training or an inattentive-focused, gender-responsive training, and will then be asked to review vignettes depicting children with hyperactive and inattentive symptoms, with varying student genders. Referral accuracy and knowledge of ADHD will be measured. Training condition, symptom presentation, and student gender …


A Field Test Of The Role Of Biofluorescence In Territorial Salamanders, Kasey Watterson, Cari-Ann M. Hickerson, Carl Anthony Jan 2026

A Field Test Of The Role Of Biofluorescence In Territorial Salamanders, Kasey Watterson, Cari-Ann M. Hickerson, Carl Anthony

2026 Faculty Bibliography

Biofluorescence is recognized as an important form of visual communication, yet its function remains largely untested in many terrestrial species. In Eastern Red-Backed Salamanders (Plethodon cinereus), fluorescence of the postcloacal gland is a sexually dimorphic trait most strongly expressed in males. Because fluorescence can be displayed during territorial contests, we hypothesized that fluorescence in male P. cinereus would be positively related to resource holding potential (RHP) of territorial residents in the field. To test this hypothesis, we examined the relationship between fluorescence and two separate variables: body condition (as a proxy for RHP) and territory quality (the expected payoff from …


Does Voluntary Manslaughter Exist In South Dakota?, Gregory Brazeal Jan 2026

Does Voluntary Manslaughter Exist In South Dakota?, Gregory Brazeal

South Dakota Law Review

The American legal tradition generally distinguishes between cold-blooded, premeditated intentional killing and hot-blooded, spontaneous intentional killing. The former has traditionally been categorized as murder and the latter as the lesser crime of “voluntary manslaughter.” South Dakota’s homicide statutes, interpreted based on their plain meaning, depart from this deeply rooted tradition. The closest equivalent to the crime of voluntary manslaughter appears in South Dakota’s first-degree manslaughter statute, which includes a prohibition on homicide “[w]ithout any design to effect death . . . and in a heat of passion, but in a cruel and unusual manner.” The phrase “heat of passion” suggests …


Bundle Of Bytes: The Legal And Ethical Considerations For The Transfer, Ownership, And Disposition Of Digital Assets, Wendy Donelan Madsen Jan 2026

Bundle Of Bytes: The Legal And Ethical Considerations For The Transfer, Ownership, And Disposition Of Digital Assets, Wendy Donelan Madsen

South Dakota Law Review

The right to transfer, own, and dispose of one’s assets after death is one of Americans’ most cherished rights. For most of the last century, Americans primarily held tangible assets, which were sufficiently managed through estate administration laws. Some key rights, such as transferring, owning, and disposing of tangible assets, are well understood by the bundle of sticks analogy common in property law. However, in the twenty-first century, Americans have accumulated significant digital assets that also require transfer, ownership, and disposition. Yet the current laws governing intangible assets do not adequately address these needs. Therefore, the bundle of bytes offers …


Climate Change And Species Interactions Jointly Shape Migration Timing And Growth At A Critical Ontogenetic Transition In Juvenile Sockeye Salmon, Margaret E. Veatch Jan 2026

Climate Change And Species Interactions Jointly Shape Migration Timing And Growth At A Critical Ontogenetic Transition In Juvenile Sockeye Salmon, Margaret E. Veatch

Honors Theses

Climate change is shifting the timing of biological events globally, but the mechanisms linking environmental variation to phenological changes are poorly understood in many systems, particularly those where individuals undergo ontogenetic habitat shifts. Here, I examined the join influence of climate-driven environmental variability and species interactions migration timing and body size at migration in juvenile sockeye salmon (Oncorhynchus nerka) in Lake Aleknagik, Alaska, using a multi-decadal dataset (1967–2024). Migration timing varied widely among years and was best explained by a combination of ice-out phenology, epilimnetic temperature, and fish densities in littoral habitats. Juvenile sockeye salmon migrated earlier in …


"It's A Dance": Examining Midwives As Choreographers Of Reproduction In Maine, Annie Goldstein Jan 2026

"It's A Dance": Examining Midwives As Choreographers Of Reproduction In Maine, Annie Goldstein

Honors Theses

This thesis examines the contemporary work of community-based Maine midwives through the theoretical framework of choreography. In the context of this work, choreography can be understood as the well-thought-out, purposeful undertaking of a process during which negotiation, coordination, and improvisation are required to adapt to constantly changing circumstances. Using choreography, this thesis attempts to understand how Maine midwives navigate global market processes and practice under authoritative forms of biomedicine, ultimately linking them to other midwives across various global sites. Situated within Maine’s maternal health landscape that is characterized by the ongoing closure of labor and delivery units and rural hospitals, …


The Role Of Mscs In The Il23/17 Pathway And Their Response To Mechanical Stress, Norma Aileen Dominguez Jimenez Jan 2026

The Role Of Mscs In The Il23/17 Pathway And Their Response To Mechanical Stress, Norma Aileen Dominguez Jimenez

Honors Theses

Mechanical stress plays a central role in shaping cellular behavior within skeletal tissues. At the enthesis, where tendons and ligaments attach to bone, repeated mechanical loading is strongly associated with inflammation and the development of ankylosing spondylitis (AS). Although mesenchymal stem cells (MSCs) are known to contribute to tissue structure and repair at these sites, their potential role in inflammatory signaling, particularly within the I 23/IL 17 pathway, remains unclear. In this thesis I investigated whether MSCs are capable of expressing cytokines involved in this pathway and how mechanical stress and differentiation influence this expression. Using the mouse derived C3H/10T1/2 …


Ultra-Processed Or Ultra-Addictive? A Demand-Based Redefinition Of Ultra-Processed Foods, Braden Jondro Jan 2026

Ultra-Processed Or Ultra-Addictive? A Demand-Based Redefinition Of Ultra-Processed Foods, Braden Jondro

Honors Theses

Ultra-processed foods now comprise the majority of the U.S. food supply and have been directly associated with 32 chronic diseases including obesity, cardiovascular disease, cancer, and diabetes. Current classification systems such as NOVA provide a useful framework for identifying food processing, but rely on broad and subjective categorizations that may not capture the mechanisms most closely associated with promoting persistent overconsumption. In particular, existing classification systems remain limited in their ability to evaluate addiction-like behaviors associated with highly processed foods, including persistent purchasing patterns, reinforcement effects, and substitution responses. This paper introduces the Ultra-Processed Food Intensity (UPFI) index, an objective, …


Blood And Belonging: Remembering Massacres Of The American West In The Twentieth Century, Mountain Meadows And Sand Creek, Kenzie Burns Jan 2026

Blood And Belonging: Remembering Massacres Of The American West In The Twentieth Century, Mountain Meadows And Sand Creek, Kenzie Burns

Honors Theses

The late nineteenth and early twentieth centuries marked a turning point in mainstream America’s sense of national identity. A wave of nostalgia for the American Frontier enshrined the region’s idealized nineteenth-century past as myth. A key part of the story is romanticized violence—often depicted through cultural imagery of cowboys, gunfights, and battles with American Indians. This project seeks to understand more about how violence is represented in the cultural memory of the American Western past. Within the past twenty years, scholars of the American West have begun to incorporate the study of memory into their scholarship, frequently with how cultural …


Changing Student Perspectives On Alcohol, Smoking & Vaping Through The Use Of Tetrahymena, Courtney Hausner, Douglas L. Chalker, Alexandra Forgerson, Carol E. Colaninno, Alison Brockhouse, Rachel Ruggirello Jan 2026

Changing Student Perspectives On Alcohol, Smoking & Vaping Through The Use Of Tetrahymena, Courtney Hausner, Douglas L. Chalker, Alexandra Forgerson, Carol E. Colaninno, Alison Brockhouse, Rachel Ruggirello

Institute for School Partnership: Research & Publications

We describe the redesign and classroom testing of an Advancing Secondary Science Education through Tetrahymena (ASSET) module addressing adolescent alcohol, smoking, and vaping. Using the 5E instructional model, the module has students investigate how alcohol, cigarette smoke extract, and vape extract affect the ciliated protozoan Tetrahymena, an accessible proxy for effects on ciliated human respiratory cells. Students analyze public health data, conduct guided and self-designed investigations, and create outreach posters communicating evidence-based risks to peers. We report on observations from two classroom implementations, describing gains in students' ability to articulate toxicology concepts, connect cellular findings to whole-body health, and express …


Girl, Just Shut Up & Take An Advil: A Zine About Periods, Participation, And Why We All Became Experts At The Tampon-To-Sleeve Transfer, Alexa Ford Jan 2026

Girl, Just Shut Up & Take An Advil: A Zine About Periods, Participation, And Why We All Became Experts At The Tampon-To-Sleeve Transfer, Alexa Ford

OTD 721: Cultural Responsiveness & Occupation

Like many people, I learned early on that menstruation was something to manage quietly. I learned how to check for stains without making it obvious. I learned how to strategically tie a sweatshirt around my waist. I learned that asking, "Do you have one?" across a public restroom often resullts in an immediate and enthusiastic, "Yes, girl. What do you need?" Over time, I realized these weren't just funny shared experiences. They reflected something bigger. The silence. The stigma. The expectation that people should function through discomfort without complaint.

As I've learned more through occupational therapy, I've started to understand …


How To Be 2slgbtqia+ And Neurodivergent Affirming As An Occupational Therapist, Ellie Shoop Jan 2026

How To Be 2slgbtqia+ And Neurodivergent Affirming As An Occupational Therapist, Ellie Shoop

OTD 721: Cultural Responsiveness & Occupation

When we were asked at the beginning of our class, "What is one thing you have experienced that you wish no one would ever have to experience again?", by author and occupational therapist Elizabeth Ching, OTD, M.Ed., BSOT, OTR/L, my mind began to swirl with ideas. I identify as a gay, white, neurodivergent, non-binary person, and I wish that no one would be misgendered or have their sexuality assumed by health professionals ever again. I also wish that people with neurodivergent brains would be given the support they need to thrive in a world that was not built with us …


Cochlear Micropump Drug Delivery System: A Noninvasive Technique For Murine Intracochlear Drug Delivery, Janette Collins Jan 2026

Cochlear Micropump Drug Delivery System: A Noninvasive Technique For Murine Intracochlear Drug Delivery, Janette Collins

Theses

In a 2018 World Health Organization (WHO) study, over 400 million people worldwide were affected by hearing loss (World Health Organization, 2023). Cochlear implants have provided a conventional route to aid inner ear issues but are ineffective either delivering to unintended targets or delivering unknown concentrations of a particular drug and create toxicity to the user. With medical advances and using 3-D printing technology, new opportunities to use programmable drug delivery systems to treat auditory disorders have been created. Borkholder Labs in Rochester, NY have created and improved a miniaturized implantable and scalable peristaltic micropump that provides programmable and accurate …


Evaluating Rate Of Perceived Exertion And Heart Rate In High School Weight Training Students For Assessing, Enhancing, And Maintaining Health-Related Fitness, Nicholas Searcy Jan 2026

Evaluating Rate Of Perceived Exertion And Heart Rate In High School Weight Training Students For Assessing, Enhancing, And Maintaining Health-Related Fitness, Nicholas Searcy

Theses and Dissertations

This mixed-methods study evaluated the relationship between rating of perceived exertion (RPE) and heart rate (HR) among high school weight-training students during circuit training sessions. The purpose of this study was to determine whether RPE could serve as a practical method for gauging moderate to vigorous physical activity (MVPA) among high school weight-training students while allowing students to assess and enhance their health-related components of fitness. Participants were high school students enrolled in weight-training classes who completed upper- and lower-body circuit training sessions over a 4-week period, or a total of 16 school days. RPE was self-reported using Borg’s CR10 …


Machine Learning For Predicting Prosthetic Limb Movements, Jessica Alexandra Cegarra Arraiz Jan 2026

Machine Learning For Predicting Prosthetic Limb Movements, Jessica Alexandra Cegarra Arraiz

Theses and Dissertations

This thesis develops and evaluates a deep learning-based prediction model capable of identifying intended limb movement from surfaced electromyography (sEMG) signals using sequence learning techniques. sEMG signals change over time due to multiple factors such as muscle fatigue or user variability. Traditional prosthetics control methods rely on static feature extraction, ignoring how signals change over time, thereby limiting their ability to capture the temporal changes of muscle activity. As a result, these approaches often lead to poor accuracy, robustness, and generalization. Limited experimental validation has been conducted on sequence-based machine learning approaches using temporal sEMG data from publicly available datasets …


Green Synthesis Of Tio2 Nanoparticles Via Graphene Oxide-Doped Malabar Spinach Leaf Extract For Perovskite Solar Cells, Nofrijon Sofyan, Ichsan Pandu Wicaksono, Fiona Angellinnov, Aga Ridhova, Akhmad Herman Yuwono, Donanta Dhaneswara Jan 2026

Green Synthesis Of Tio2 Nanoparticles Via Graphene Oxide-Doped Malabar Spinach Leaf Extract For Perovskite Solar Cells, Nofrijon Sofyan, Ichsan Pandu Wicaksono, Fiona Angellinnov, Aga Ridhova, Akhmad Herman Yuwono, Donanta Dhaneswara

Baghdad Science Journal

This study investigates a green synthesis route for titanium dioxide (TiO2) nanoparticles (NPs) using Malabar spinach (Basella rubra) leaf extract, with graphene oxide (GO) as a dopant, for application as an electron transport layer in perovskite solar cells (PSCs). The synthesized TiO2 NPs were characterized using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRS), and field emission scanning electron microscopy equipped with energy dispersive X-ray spectroscopy (FESEM/EDX). XRD results confirmed the presence of a pure anatase phase with a smaller crystallite size than that of commercial TiO2, …


Low Temperature Ac Photoelectrochemical Etching Of Si-Doped N-Type Gan: Nanostructure Fabrication For Enhanced Msm Photodetector Performance, Nur Iwani Nor Izaham, Ainorkhilah Mahmood, Rosfariza Radzali, Alhan Farhanah Abd Rahim, Nur Maizatul Azra Mothtar, Mahayatun Dayana Johan Ooi, Naser Mahmoud Ahmed Jan 2026

Low Temperature Ac Photoelectrochemical Etching Of Si-Doped N-Type Gan: Nanostructure Fabrication For Enhanced Msm Photodetector Performance, Nur Iwani Nor Izaham, Ainorkhilah Mahmood, Rosfariza Radzali, Alhan Farhanah Abd Rahim, Nur Maizatul Azra Mothtar, Mahayatun Dayana Johan Ooi, Naser Mahmoud Ahmed

Baghdad Science Journal

This study has investigated the fabrication of porous Si-doped gallium nitride (GaN) using low-temperature alternating current photoelectrochemical (ACPEC) etching at varying etching durations for MSM photodetector applications. The structural and optical characteristics of the porous GaN samples were examined using a 400 W high-pressure mercury-vapour lamp (Hg-HPVL) and 4% KOH electrolyte with 50 Hz of 100 mA alternating current (AC). Current-voltage (I-V) measurements were conducted to analyse the platinum-deposited GaN for MSM photodetector performance. FESEM micrographs of the etched samples revealed coral-like and nano-tunnel pore formations, while AFM topography showed a significant increase in surface roughness compared to in the …


Land Suitability For Seasonal Crops: Limiting Factors And Sdg-Aligned Management Strategies, Rahmawaty Rahmawaty, Abdul Rauf, T Alief Aththorick, R Hamdani Harahap, Christine Pepah, Rohani Simbolon, Minhajul Abidin, Nawang Wulan, Anggiat Hosea O Siregar, Mohd Hasmad Ismail, Seca Gandaseca Jan 2026

Land Suitability For Seasonal Crops: Limiting Factors And Sdg-Aligned Management Strategies, Rahmawaty Rahmawaty, Abdul Rauf, T Alief Aththorick, R Hamdani Harahap, Christine Pepah, Rohani Simbolon, Minhajul Abidin, Nawang Wulan, Anggiat Hosea O Siregar, Mohd Hasmad Ismail, Seca Gandaseca

Baghdad Science Journal

A land evaluation study of Muara Batang Toru Sub-district is essential to determine its development prospects for seasonal crops. This study evaluates land suitability for six seasonal plants, including red chili, cucumber, shallot, tomato, eggplant, and bitter melon, in Muara Batang Toru Sub-district, South Tapanuli Regency. This study employs a survey method, integrating field observations and laboratory analysis with predetermined criteria based on a combination of internationally recognized standards and local conditions. Geographic information systems are used to map the actual and potential land suitability classes for vegetable crops. The findings indicate that most of the actual land suitability classes …


Research Initiative For Northeast Grazing Soils (Rings) Soil Carbon Data Report, Karla M. Jarecke, Joseph P. Amsili, Alexandra Contosta, Caitlin Hicks Pries, Kelsey H. Jensen, Morgan Mcclure, Alexander Steiner, Eric Von Wettberg, Mojtaba Zeraatpisheh Jan 2026

Research Initiative For Northeast Grazing Soils (Rings) Soil Carbon Data Report, Karla M. Jarecke, Joseph P. Amsili, Alexandra Contosta, Caitlin Hicks Pries, Kelsey H. Jensen, Morgan Mcclure, Alexander Steiner, Eric Von Wettberg, Mojtaba Zeraatpisheh

Faculty Publications

The Research Initiative for Northeast Grazing Soils (RINGS) is a multi-institutional collaboration with a mission to advance the understanding of soil organic carbon (SOC) dynamics in grazing systems across the northeastern United States. RINGS distributed a survey between October 2025 and June 2026 to researchers and practitioners across the Northeast to identify where SOC data has been collected and the basic field and lab methods used. The survey asked participants to describe existing soil datasets collected on land directly or indirectly impacted by grazing livestock. The survey was distributed to colleagues of RINGS researchers that work at university, corporate and …


Revisiting The Life Cycle Of Margalefidinium Polykrikoides Group Iii, Eduardo Pérez-Vega, Kenneth N. Mertens, Pjotr Meyvisch, Margaret R. Mulholland Jan 2026

Revisiting The Life Cycle Of Margalefidinium Polykrikoides Group Iii, Eduardo Pérez-Vega, Kenneth N. Mertens, Pjotr Meyvisch, Margaret R. Mulholland

OES Faculty Publications

Dinoflagellates produce cysts as a strategy to withstand environmental stressors, with nutrient depletion generally considered a key trigger for cyst production. Resting cysts are thick-walled, typically composed of one to several layers, and characterized by a prolonged dormancy period. In contrast, pellicle cysts possess a thin, single wall and exhibit no dormancy or a markedly shorter dormancy than resting cysts of the same species. Margalefidinium polykrikoides produces pellicle and resting cysts, whereas its congener, M. fulvescens, has been shown to produce pumpkin-like structures. Using phase-contrast microscopy, time-lapse microscopy, FlowCam, and attenuated total reflection Fourier transform infrared microspectroscopy (ATR μ-FTIR), …


Efficient Preservation Of Old Methane-Derived Organic Carbon In Deep-Sea Surface Sediments, Rui Bao, Yangli Che, Mingzhi Liu, Naiyu Zhang, Yang Zhou, Lihua Dong, Shen Li, Owen A. Sherwood, Min Yu, Zongheng Chen, Shengxiong Yang, Nan Wang, Longhai Zhu, Jiawang Chen, Mutai Bao, Haoshuai Li, Luonan Chen, Weifeng Wu, Haiyue Ma, David J. Burdige Jan 2026

Efficient Preservation Of Old Methane-Derived Organic Carbon In Deep-Sea Surface Sediments, Rui Bao, Yangli Che, Mingzhi Liu, Naiyu Zhang, Yang Zhou, Lihua Dong, Shen Li, Owen A. Sherwood, Min Yu, Zongheng Chen, Shengxiong Yang, Nan Wang, Longhai Zhu, Jiawang Chen, Mutai Bao, Haoshuai Li, Luonan Chen, Weifeng Wu, Haiyue Ma, David J. Burdige

OES Faculty Publications

Methane released from the subseafloor is significantly attenuated during upward migration, yet the preservation of methane-derived organic carbon (OC) in global deep-sea sediments remains poorly understood. Here, we measured carbon isotopes coupled with temperature-ramped analyses on various methane seepage sediments. Our results reveal a correlation between the radiocarbon (¹⁴)C) content in deep-sea surface sediments and sulfate-methane transition depth. Notably, our findings suggest that a substantial amount of (¹⁴)C-depleted OC may originate from deep-seated methane and is efficiently preserved in surface seepage sediments. We propose that the efficient OC preservation is related to microbial-mediated aggregate formation at the seawater-sediment interface, where …


Chesapeake Bay Water Clarity: Challenges And Successes, Jessica S. Turner, Carl T. Friedrichs, David B. Parrish, Kelsey A. Fall Jan 2026

Chesapeake Bay Water Clarity: Challenges And Successes, Jessica S. Turner, Carl T. Friedrichs, David B. Parrish, Kelsey A. Fall

OES Faculty Publications

The Chesapeake Bay is a large estuarine system spanning multiple jurisdictions and serves as a model for estuarine health worldwide. Historically, nutrient loading degraded water quality, prompting the need for regulation. Water clarity, one component of water quality, is vital for benthic communities and serves as a key indicator of overall ecosystem health. Here, physical resuspension and salinity gradients, nutrient and sediment inputs, production of organic detritus by phytoplankton, and benthic communities all interact to drive clarity patterns, with high spatial variability. Trends over the last 50 years show improvement, though with a temporary increase in organic detritus in response …


A Tale Of Two Microbialities: Stromatolites And Microbially Induced Sedimentary Structures, Nora Noffke, Stanley M. Awramik Jan 2026

A Tale Of Two Microbialities: Stromatolites And Microbially Induced Sedimentary Structures, Nora Noffke, Stanley M. Awramik

OES Faculty Publications

Microbialites are biosedimentary structures built by microbial mats. Five microbialite groups are distinguished: stromatolites, thrombolites, dendrolites, leiloites and microbially induced sedimentary structures (MISS). This contribution discusses the two most abundant microbialite groups in marine settings, stromatolites and MISS. Microbial interactions with clastic sediment are very similar in both stromatolite and MISS formation. However, in stromatolites, syngenetic carbonate production caused by photoautotrophic and heterotrophic metabolisms and by calcimicrobes also takes place. More so, carbonate may precipitate within the extracellular polymeric substances. Due to the various carbonate forming processes as well as recrystallisation, the microscopic mat fabrics within stromatolite laminae are rarely …


How-To: Academic Job Interviews (In The United States), Erin K. Peck, Kendall Valentine, Serina S. Wittyngham, Jessie S. Turner Jan 2026

How-To: Academic Job Interviews (In The United States), Erin K. Peck, Kendall Valentine, Serina S. Wittyngham, Jessie S. Turner

OES Faculty Publications

[Introduction] "I (EKP) bombed my first interview on the tenure-track academic market. After I entered the Zoom room filled with search committee volunteers, the chair performed a quick round of introductions, and I was told that I would have strictly five minutes to answer each question. I smiled nervously, wringing my hands under the desk, and waited to be asked to derive a diagenetic equation or defend the methods I used in my recent manuscript.

“We'll start with something easy. Tell us about yourself,” began the chair.

I opened my mouth. I closed my mouth. My mind went blank. “Um …


Seasonal And Geologic Controls On Submarine Groundwater Discharge-Derived Nutrient Fluxes To Two Coastal Embayments, Moira Taylor, Joseph J. Tamborski, Aaron Alorda-Kleinglass, Nathaniel Maynard Jan 2026

Seasonal And Geologic Controls On Submarine Groundwater Discharge-Derived Nutrient Fluxes To Two Coastal Embayments, Moira Taylor, Joseph J. Tamborski, Aaron Alorda-Kleinglass, Nathaniel Maynard

OES Faculty Publications

Submarine groundwater discharge and porewater exchange are critical but often overlooked sources of nutrients to coastal systems. This study investigates how sediment permeability and summer-winter seasonal dynamics influence the magnitude and biogeochemistry of nutrient fluxes from submarine groundwater discharge and porewater exchange. Reaction rates in the subterranean estuary were used to identify the transformations and drivers of nutrient loading in two geologically distinct embayments in the U.S. East Coast: the highly permeable Peconic Bay estuary (NY), and the surficially fine-grained coastal embayments of the southern Delmarva Peninsula (VA). We applied radium isotope mass balances to distinguish total submarine groundwater discharge …