Oceanography and Atmospheric Sciences and Meteorology Commons^™

Growing Pains: A Genetic Comparison Of Nurse Sharks (Ginglymostoma Cirratum) With Differing Growth Rates, Michelle Gargiulo

Ocean Engineering and Marine Sciences Student Publications

Nurse sharks, Ginglymostoma cirratum, range throughout the tropical and subtropical Atlantic, and are commonly found in coastal ecosystems in Southern Florida and the Keys. Nurse sharks like all Elasmobranchs (sharks, skates, and rays) are slowgrowing and long lived, making them susceptible to extinction. Recently listed as vulnerable on the IUCN Red List1,2, nurse sharks are relatively underrepresented in scientific literature, and much research remains to be done to understand and protect this species. Growth rates and body size between fish populations of the same species can vary widely. Individuals in the tropics often grow faster and mature at a smaller …

Microburst Day Potential Index: Improving Launch And Public Safety, Zachary Kopel

Ocean Engineering and Marine Sciences Student Publications

Microbursts

•  A common convective wind event 
• Capable of causing damage from wind exceeding 30kts (NWS) 
• Cape Canaveral is a prime microburst environment 
• Can affect launch ops and daily activities by exceeding safety standards

Influence Of Sediment Composition On Seagrass Growth, Hattie Lechner, Joshua Ahrens

Ocean Engineering and Marine Sciences Student Publications

Seagrass Beds are a vital component of the Indian River Lagoon (IRL). They support biodiversity and improve water quality, yet they have experienced significant declines in recent years. Multiple restoration efforts have attempted to replant seagrass in the lagoon and have experienced varying levels of success. Sediment characteristics such as grain size, pH, and nutrient/sulfide concentrations can influence seagrass health and growth, but the relative importance is unclear. This study investigated the relationship between sediment characteristics and the performance of the seagrass Halodule wrightii across multiple different types of sediments found within the IRL in order to identify ideal sediments/locations …

The Carbon Dioxide Utilization Potential Of Marine Algae, Declan O'Leary, Giovanni Williams, Joey Ciocher, Aidan Yeilding, Eddie Wawrzycki-Stein, Melvin Jarrett, William Marple, Olivia Mullenski, Abby Tickett, Connor Burnand, David Kulcsar

Ocean Engineering and Marine Sciences Student Publications

Excessive atmospheric CO₂ drives ocean acidification, lowering seawater pH and carbonate ion availability, which impairs calcification in corals, mollusks, and many plankton—threatening reef structure, biodiversity, and food webs (1, 2).

The goal of this research is to explore the potential of marine algae or seaweeds in reducing carbon dioxide in the oceans.

Finding Jaws: Dna Barcoding Shark Cartilage To Identify Species, Kenna Peters

Ocean Engineering and Marine Sciences Student Publications

Elasmobranchs (sharks and rays) are vital keystone predators that help regulate the health of marine ecosystems, and some of the largest and most wide-ranging fishes in the ocean1. Elasmobranch identification is difficult due to morphological similarities between species, and the high risk of encountering cryptics. These are evolutionarily distinct, but physically identical to more common taxa, and can only be identified using genetics. Misidentification is a major obstacle to shark science, especially considering new data showing that >70% of all elasmobranchs have been lost in the past 50 years, and many sharks are now shifting ranges in response to global …

Growth And Nutrient Uptake Of Ulva Lactuca: Theoretical Nutrient Removal And Fertilizer Reuse Potential, Audrey Crawford

Ocean Engineering and Marine Sciences Student Publications

• Eutrophication is a major problem in the Indian River Lagoon (IRL)  
• One natural response to eutrophication is increased algal growth
• Previous studies identified Ulva lactuca as one of the fastest-growing macroalgal species in the lagoon (Whitehouse and Lapointe, 2015) 
• Ulva lactuca also has potential use as a fertilizer, creating a link between nutrient removal and beneficial reuse
• This study aimed to quantify nutrient uptake rates of Ulva lactuca in order to estimate how much nutrient load could theoretically be reduced through large-scale cultivation

Impact Of Bryozoans On The Psii Efficiency Of Sargassum, Maxwell Ronan Stanfield

Ocean Engineering and Marine Sciences Student Publications

Sargassum species such as s. fluitans and s. natans support epiphytic organisms on its surface, such as diatoms, hydrozoans, and encrusting bryozoans. Evidence previous studies suggests that marine epiphytic organisms have a negative effect on the photosynthetic pathways of the algae they live on (Khan, Du, Khan, Che, and Khurshid 2021; Cancino, Mufioz, Mufioz, and Orellana 1987). Interestingly, some evidence shows that even when epiphytic encrusting bryozoans limit the light reaching red algae, the algae was able to produce more photosynthetic pigments to compensate for the lowered light intensity (Muñoz, Cancino, and Molina 1991). No data is currently available on …

Does Information Loss Bias Our Estimates Of Predation In The Fossil Record?, Ashcon Davachi

Ocean Engineering and Marine Sciences Student Publications

• Predation in fossil marine-ecosystems is generally estimated through analysis of time-averaged prey assemblages.
• Do time-averaged assemblages reflect predation on smaller ecological time scales?
• In this project I compared estimates of predation-related damage to snail shells derived on two ecological time scales to determine whether information loss biases our estimates of predation in the fossil record

Reefstarter Deployment System, Dylan Alvarez, Jacob Elston, Alex Ketchen, Jaidyn Lodens

Ocean Engineering and Marine Sciences Student Publications

• Threats from coastal erosion drive the need for effective and sustainable protection methods. 
• Interlocking concrete reef blocks dissipate wave energy while also supporting habitat restoration.
• Current deployment methods are inefficient and require significant human interaction.
• A compact hydraulic lifting system should enable increased safety, control, and efficiency

The September 17th, 2025, Gigantic Jet Off The Puerto Rican Coast: A Case Study, Jaedon Benbow

Ocean Engineering and Marine Sciences Student Publications

Gigantic jets (GJs) are an electrical discharge that propagates upward from the top of a thunderstorm, reaching altitudes between 70 and 90 km, terminating in the lower ionosphere (Lazarus et al., 2021). This GJ event occurred on 5:33:53 UTC on September 17th, 2025. Despite the rarity of gigantic jets, tropical regions like Puerto Rico have a higher likelihood of occurrence due to more available convection. This GJ event was caught on radar. This provides additional data helpful for analyzing this case.

Current Capture, Maggie Palmer, Colin Stefan, Ricky Gay, Sofia Scarpa, Hayden Linkel

Ocean Engineering and Marine Sciences Student Publications

Current Capture aimed to design, develop, and test a prototype of a hydropower turbine that is scalable and deployable. The design considers the harsh ocean environment, corrosion in the material selection, efficiency in the blade choice, and structural positioning in the housing extremities. Two NACA foil composite blades were designed and manufactured to perform an experiment and analyze the velocities and RPMs.

The Forecasting Challenge Of Snow Cover Induced Temperature Depressions, Lucas Silva

Ocean Engineering and Marine Sciences Student Publications

• Snow cover can keep the surface layer cool in the day and amplify cooling at night
• Unexpected SCITDs can cause sudden freezes, deteriorating travel conditions
• To what extent is the forecast accuracy of the NWS affected during SCITDs?

Midwest Extremes: Quantifying 26 Years Of Excessive Heat Events And Demographic Risk, Nasir Grant

Ocean Engineering and Marine Sciences Student Publications

• According to Vose et al. (2017), the Midwest experienced the largest increase in average minimum temperature among all regions of the United States which is a noticeable risk to the Midwest population.
• The climatology of the Midwest is majority hot summer humid continental and includes warm summer humid continental and cold semi-arid.
• This study investigated cities that have experienced high counts of (EHEs) and positive population growths in between 2000 and 2020 while plotting the cities into a risk map.

Plant Growth Promoting Phenotypes Of Fungal Isolates From The International Space Station, Shane Doyle, Frances A. Edmonson

Ocean Engineering and Marine Sciences Student Publications

• In situ (on site) space crop production is vital for sustainability and dietary health of astronauts. 
• We hypothesize that International Space Station (ISS) derived fungal isolates will stimulate plant growth and express PGP phenotypes.
• Eleven space-viable fungi were screened via phenotypic testing to identify plant growthpromoting (PGP) activity.
• Prior research has been conducted solely with ISS derived bacteria, while ISS fungi are unexplored, which could reveal new or improved symbiotic relationships and growth factors.

Panoramic Analysis And Strategic Proposals Of Helium Research In China Based On Knowledge Graph, Huayang Li, Quanyou Liu, Dongya Zhu, Xiaoqi Wu, Chi Zhang, Zehui Shi

Bulletin of Chinese Academy of Sciences (Chinese Version)

Helium is a critical rare gas essential for aerospace, medical devices, and semiconductor production. With about 85% of its helium coming from imports, China’s advancement of exploration and development technologies is vital for national resource security. This study analyzes helium-related publications from CNKI (2000–2025) using advanced data visualization and statistical methods. It introduces a three-pronged approach–data-driven analysis, visual representation, and mechanistic explanation–to offer the first comprehensive examination of China’s helium exploration and development research, revealing its evolution and current state from multiple perspectives and providing fresh insights. By examining publication trends, institutional contributions, and evolving research priorities, the study maps …

Exploring Alternate Methods Of Flood Output Estimation During Natural Disasters, Finley Gardner

Honors College Theses

In April of 2025, extreme flooding damaged many homes and buildings of people across Kentucky. The Federal Emergency Management Agency (FEMA) produces maps that show the potential for flooding in areas around water bodies, but many of the April flooding damaged areas were well outside of the FEMA classification zones. The main purpose of this thesis research was to create an accurate model of potential flood extent in Kentucky and compare it to FEMA maps. This model did not require extensive computing power and produced a map that accurately depicted flood extent through the use of Digital Elevation Model (DEM) …

Risks And Challenges Under Approaching Climate Tipping Points And Governance Recommendations, Chengdong Huang, Xiaohong Chen, Zhifang Zhou

Bulletin of Chinese Academy of Sciences (Chinese Version)

Climate tipping points represent critical thresholds at which Earth’s climate subsystems undergo abrupt transitions, characterized by irreversibility, self-perpetuation, and complex interconnections, posing severe challenges to global climate governance. This study systematically elucidates the scientific implications and key features of climate tipping points, with a focus on analyzing the multifaceted risks triggered by their activation, including climatic physical risks, socio-economic systemic risks, and national security risks. To address these challenges, the research proposes a governance framework centered on “preventing abrupt changes—maintaining resilience—actively adapting”, emphasizing pathways such as enhanced monitoring and early warning, cultivating new quality productive forces, and constructing a global …

Dynamics And Energetics Of Fast Waves From The Earth's Surface To The Lower Thermosphere, Richard L. Walterscheid, Michael P. Hickey Ph.D.

Publications

We use a Full Wave Model to examine the dynamics and energetics of waves that can be excited in the troposphere by a large explosive event. We find resonant structures in phase speed wavenumber space that can have substructures with distinct properties. The primary waves found are Lamb waves and fast deep waves (denoted 𝐿′) that have a hybrid internal-external wave nature and were recently identified in observations. Lamb waves and thermospherically ducted waves are branches of two continuous forms separated by a gap in which Lamb waves are preempted by Lamb speed waves oscillating with the buoyancy frequency. We …

Recent Wetland Elevation Dynamics In Coastal Louisiana, Usa, Elizabeth Harris

LSU Master's Theses

Coastal marshes globally are increasingly vulnerable to accelerating relative sea-level rise (RSLR), which threatens their capacity to maintain elevation through feedbacks among sediment supply, vegetation productivity, hydrology, and soil processes. Although many marshes can persist under moderate rates of sea-level rise through vertical accretion and belowground biomass production, this resilience is strongly constrained by sediment availability and subsurface processes such as autocompaction and organic matter decomposition. High accretion is often assumed to confer marsh resilience; however, subsurface processes, particularly autocompaction driven by surface loading, can substantially offset elevation gains. Coastal Louisiana experiences among the highest rates of RSLR worldwide due …

Characterizing The Unique Chemical Imprint Of On-Axis, Lower-Temperature Hydrothermal Flow To The Deep Ocean (Southern East Pacific Rise, 16.5°–18.0°S), Laura E. Moore, Randelle M. Bundy, Joseph A. Resing, Scott M. White, Tamara Baumberger, Peter N. Sedwick, Nathaniel J. Buck, Anson M. Antriasian, Isaac Keohane

Faculty Publications

In addition to high-temperature vents, lower-temperature flow (LTF) (< 300°C) is abundant along mid-ocean ridges and contributes globally-important fluxes of heat and water along with largely-unconstrained geochemical influences on the ocean. We examined the impact of on-axis LTF on the chemical composition of the overlying water column (< 40 m above seafloor) along the 16.5°–18.0°S sector of the ultrafast-spreading southern East Pacific Rise using autonomous underwater vehicle Sentry surveys and conductivity-temperature-depth rosette casts. LTF sites were typically spatially isolated from high-temperature systems and imparted unique chemical signatures to the overlying ocean. Water column samples impacted by LTF exhibited low particulate iron:sulfur ratios and high methane: total-dissolvable manganese ratios, whereas samples influenced by high-temperature venting exhibited opposite trends. We confirmed that LTF imparts a distinct and measurable chemical signature to the water column, independent from high-temperature vents. Isolated, on-axis LTF will be important to consider when assessing hydrothermal circulation impacts upon ocean biogeochemistry.