199949,
2024
Nova Southeastern University
199949, David Kerstetter
PERC Albacore sPAT Data
Datasets (and supporting material) from 4sPAT electronic tags deployed on albacore caught by pelagic longline gear in the western North Atlantic.
199946,
2024
Nova Southeastern University
199946, David W. Kerstetter
PERC Albacore sPAT Data
Datasets (and supporting material) from 4sPAT electronic tags deployed on albacore caught by pelagic longline gear in the western North Atlantic.
Using Single Cell Genomics To Explore The Impact Of Marine Viruses On Microbial Respiration.,
2024
University of Connecticut - Storrs
Using Single Cell Genomics To Explore The Impact Of Marine Viruses On Microbial Respiration., Paxton Tomko
MCB Articles
Viral metabolic reprograming of marine prokaryotes, through the use of virally encoded auxiliary metabolic genes (AMGs), plays a critical role in marine ecosystem function by influencing biochemical cycles and genetic diversity in these environments. Despite the fundamental role viruses play in global environmental ecosystems, they remain an understudied aspect of microbial ecology and evolution, in part due to the methods available for studying virus host interactions in natural systems. Thus far, metagenomic analyses have been used to study the interactions of virus host pairs, but these types of analyses have their limitations in accurately linking viruses to hosts, or culture-based …
Late Summer Plankton Community Variation In Near Shore Environments,
2024
University of San Diego
Late Summer Plankton Community Variation In Near Shore Environments, Aidan Jacobs-Walker
Copley Library Undergraduate Research Awards
Phytoplankton communities have profound impacts on ecosystem health and function. In the Southern California Bight, hydrographic conditions play a key role in determining the composition of phytoplankton communities. This study conducted hydrographic and plankton community analyses of the nearshore environment off Dana Point, California, during late September. Similar to other studies in the SCB during fall, we observed weakly stratified, oligotrophic waters dominated by dinoflagellates under 10 μm. However, the recorded plankton abundances onshore vs. offshore deviated from the “green ribbon” typical of the SCB, in which phytoplankton are much more abundant onshore than offshore. Additionally, while the onshore community …
Spatial Variation In Mercury Contamination In Freshwater Fish Species Across Rhode Island,
2024
Roger Williams University
Spatial Variation In Mercury Contamination In Freshwater Fish Species Across Rhode Island, David L. Taylor, Brianna Lotti, Jonathan Serbst, Jim Lake, Alan Libby, Mariel Sorlien
Student Research Symposium
Fish provide essential nutrients and proteins beneficial to human health, yet may pose certain risks due to contaminants in edible tissues. For example, mercury (Hg) is a widespread toxicant that bioaccumulates in fish muscle (filet) tissue. Accordingly, federal and state government agencies issue consumption advisories to minimize diet related Hg exposure. Fish consumption advisories, however, often fail to account for small-scale spatial variations in Hg contamination, especially in freshwater fishes. This study examined site-specific Hg concentrations in bluegill sunfish (Lepomis macrochirus), pumpkinseed sunfish (L. gibbosus), largemouth bass (Micropterus salmoides), chain pickerel (Esox niger), and yellow perch (Perca flavescens), all of …
Maternal Mercury Transfer From Pregnant Spiny (Squalus Acanthias) And Smooth (Mustelus Canis) Dogfish To Their Pups Through Differing Reproductive Strategies,
2024
Roger Williams University
Maternal Mercury Transfer From Pregnant Spiny (Squalus Acanthias) And Smooth (Mustelus Canis) Dogfish To Their Pups Through Differing Reproductive Strategies, David L. Taylor, Maxwell Ajemian, Abrielle Remick
Student Research Symposium
Mercury (Hg) is a bioaccumulative contaminant that can be transferred from pregnant females to developing embryos (i.e., intrauterine maternal Hg transfer); thus, leading to health deficits in offspring. This study examined Hg transfer in the ovoviviparous spiny dogfish (Squalus acanthias) and viviparous smooth dogfish (Mustelus canis). Female dogfish were collected from Narragansett Bay, Rhode Island Sound, and Block Island Sound via rod & reel, gillnet, and trawling. In the laboratory, intrauterine pups were excised from pregnant dogfish, after which samples of mother and pup muscle tissue were analyzed for total Hg concentrations ([Hg] in ppm dry weight) using automated atomic-absorption …
Mercury Content In The Baleen Plates Of Rorqual Whales,
2024
Roger Williams University
Mercury Content In The Baleen Plates Of Rorqual Whales, David L. Taylor, Ava Cieplinkski, Max Ajemian, Matthew Savoca
Student Research Symposium
Mercury is a persistent environmental contaminant posing significant risks to wildlife health due to its propensity for bioaccumulation in organismal tissues. This study investigated total mercury concentrations in the baleen plates of rorqual whales (Family Balaenopteridae), specifically the Fin whale (Balaenoptera physalus), Blue whale (B. musculus), and Rice’s whale (B. ricei). Archived baleen samples were sourced from the Smithsonian’s National Museum of Natural History and analyzed for total mercury (Hg) content (ppm dry weight) using atomic absorption spectroscopy. Male Fin and Blue whales from the Antarctic, South Pacific region (1947-1948), with body lengths ranging from 21 to 24 m, exhibited …
The Methane-Oxidizing Microbial Communities Of Three Maar Lakes In Tropical Monsoon Asia,
2024
University of Santo Tomas, Manila
The Methane-Oxidizing Microbial Communities Of Three Maar Lakes In Tropical Monsoon Asia, Iona Eunice C. Bicaldo, Karol Sophia Agape R. Padilla, Tzu Hsuan Tu, Wan Ting Chen, Milette U. Mendoza-Pascual, Carmela Vannette B. Vicera, Justine R. De Leon, Kamille N. Poblete, Eleanor S. Austria, Mark Louie D. Lopez, Yuki Kobayashi, Fuh Kwo Shiah, Rey Donne S. Papa, Noboru Okuda, Pei Ling Wang, Li Hung Lin
Environmental Science Faculty Publications
Methane-oxidizing bacteria (MOB) is a group of planktonic microorganisms that use methane as their primary source of cellular energy. For tropical lakes in monsoon Asia, there is currently a knowledge gap on MOB community diversity and the factors influencing their abundance. Herewith, we present a preliminary assessment of the MOB communities in three maar lakes in tropical monsoon Asia using Catalyzed Reporter Deposition, Fluorescence In-Situ Hybridization (CARD-FISH), 16S rRNA amplicon sequencing, and pmoA gene sequencing. Correlation analysis between MOB abundances and lakes’ physicochemical parameters following seasonal monsoon events were performed to explain observed spatial and temporal patterns in MOB diversity. …
Short-Term Temporal Trends Of A Coral Reef In Samana (Dominican Republic): The Value Of A Permanent Monitoring Program To Identify Drivers Of Rapid Change,
2024
The Nature Conservancy, Caribbean Division
Short-Term Temporal Trends Of A Coral Reef In Samana (Dominican Republic): The Value Of A Permanent Monitoring Program To Identify Drivers Of Rapid Change, Aldo Croquer, Someira Zambrano, D. Yasmín Evangelista-Perez, Samuel King, Sergio Guendulain-Garcia, Maria F Villalpando, Rita Sellares-Blasco
Gulf and Caribbean Research
Permanent monitoring programs are valuable to identify drivers of ecosystem trends. For example, in 2021, we reported the first record of Stony Coral Tissue Loss Disease (sctld) along the northeastern coast of the Dominican Republic, affecting major reef—building coral species with a prevalence above 30%. However, a few sites such as Carenero remained unaffected by sctld for almost 2 years. The average coral cover in this site was about 18—25% (mean 18.3% ± sd 1.5), and disease prevalence did not exceed 7% in the coral community. During the first quarter of 2022, a few colonies (
Quantifying Public Support For Culling Crown-Of-Thorns Starfish (Acanthaster Spp.) On The Great Barrier Reef,
2024
James Cook University
Quantifying Public Support For Culling Crown-Of-Thorns Starfish (Acanthaster Spp.) On The Great Barrier Reef, Stewart Lockie, Henry A. Bartelet, Brent W. Ritchie, Lintje Sie, Gillian Paxton
Quantitative Methods and Information Technology Faculty Publications
Population surges of crown-of-thorns starfish (COTS) (Acanthaster spp.) are a leading cause of coral cover loss on Australia's Great Barrier Reef (GBR). While COTS culling has been undertaken since 2012 little is known about how the public perceive COTS culling or how perceptions vary among social groups. Drawing on survey data collected in 2018 and 2022 we test the relative influence of demographic variables, social and institutional variables, and beliefs concerning the risks and benefits of culling, on public acceptance for the culling of COTS on the GBR. In contrast with previous research suggesting a polarization of views, we found …
A Preliminary Investigation Of Adherence To Shell Length Regulations And Adaptive Capacity Of The Turneffe Atoll Queen Conch (Aliger Gigas) Fishery, Belize,
2024
Boston University
A Preliminary Investigation Of Adherence To Shell Length Regulations And Adaptive Capacity Of The Turneffe Atoll Queen Conch (Aliger Gigas) Fishery, Belize, Elsa M. K. Brenner, Vincent Sollitto, Vincent Baribeau, Rebecca Branconi, Paul Simonin
Gulf and Caribbean Research
No abstract provided.
Lessons From An Iconic Grouper: Sex, Science, And Serendipity,
2024
University of Hong Kong
Lessons From An Iconic Grouper: Sex, Science, And Serendipity, Yvonne J. Sadovy De Mitcheson
Gulf and Caribbean Research
From a common little damselfish and spectacular grouper aggregations, to disappearing reef fishes and the dark side of the international seafood trade, my journey has passed through a fascinating and worrying period of change in the way we view and treat our oceans. Although much of my career has been in the Indo—Pacific, I focus here mainly on my professional ‘roots’ in the Caribbean and on the Nassau Grouper Epinephelus striatus, a species that kept me curious, taught me patience, never to assume and always to stay hopeful. This fish is almost an obsession; why can we not better safeguard …
The Influence Of Intracellular Photosymbiosis On The Evolution And Function Of Cnidarian Immunity,
2024
University of Texas at Arlington
The Influence Of Intracellular Photosymbiosis On The Evolution And Function Of Cnidarian Immunity, Madison A. Emery
Biology Dissertations - Archive
Intracellular photosymbiosis with Symbiodiniaceae is facilitated by cnidarian immunity as it is required for symbiont recognition and is subsequently suppressed to maintain stable intracellular symbiosis. To date, it is unclear how the cnidarian-Symbiodiniaceae symbiosis influences immune gene repertoires, immune gene expression, and disease pathology across its independent evolutions. To address these knowledge gaps, my dissertation approaches studying the cnidarian-Symbiodiniaceae symbiosis through a comparative lens to determine how it shapes immune gene evolution and immune responses in divergent symbiotic cnidarian species. In chapter two I survey eight non-symbiotic and seven symbiotic cnidarians proteomes for four families of pattern recognition receptors (PRRs) …
Fretting Corrosion Wear Of Titanium-Based Alloy (Ti-6al-4v) In 0.9 Wt.% Nacl Solution,
2024
Energy College, Quanzhou Vocational and Technical University, China.
Fretting Corrosion Wear Of Titanium-Based Alloy (Ti-6al-4v) In 0.9 Wt.% Nacl Solution, Chen-En Lu, Wen-Ken Li, Hung-Hua Sheu, Jeou-Long Lee, Hung-Bin Lee
Journal of Marine Science and Technology–Taiwan
In this study, a high precision fretting tribo-corrosion tester used to analyze the wear and corrosion behavior of Ti alloys in a fretting motion condition. The tester, operated in a ball-on-plate mode, was employed in the fretting corrosion study of metallic bio-materials (Ti and Ti-6Al-4V) under different loads (0 and 10 N), electrolytes (0.9 wt% NaCl and SBF) and fixed displacement frequency (1 Hz). Using profilometer, optical microscope in the experimental analysis and three-body mechanism in the theoretical analysis, the fretting corrosion performances of these bio-medical metals, such as velocity accommodation characteristics, friction, wear, and scratch profile were examined in …
A New-Type Deep Learning Model Based On Shapley Regulation For Containerized Freight Index Prediction,
2024
Department of Shipping and Transportation Management, National Taiwan Ocean University, Keelung 202301, Taiwan
A New-Type Deep Learning Model Based On Shapley Regulation For Containerized Freight Index Prediction, Yen-Chang Shih, Ming-Shue Lin, Taih-Cherng Lirn, Jih-Gau Juang
Journal of Marine Science and Technology–Taiwan
In this study, we have crafted an innovative methodology that represents a groundbreaking synthesis of deep learning techniques with cooperative game theory. In this study, we use the accuracy of data prediction by different LSTM models as a measurement index and assign different LSTM models corresponding weights through the Shapley value calculation method to construct a more accurate predictive analysis model. We use this improved Shapley regulation model to calibrate a long short-term memory (LSTM) neural network by using historical freight data to predict the China Container Freight Index (CCFI), the leading export container freight index commonly used in China. …
Applicability Of Reducing Valve Timing Overlap For Diesel Engines Under High Exhaust Back Pressure,
2024
Department of Mechanical and Mechatronic Engineering, National Taiwan Ocean University, Taiwan, ROC
Applicability Of Reducing Valve Timing Overlap For Diesel Engines Under High Exhaust Back Pressure, Chien-Cheng Chen, Yuan-Liang Jeng, Shun-Chang Yen
Journal of Marine Science and Technology–Taiwan
The exhaust back pressure of diesel engines becomes increasing higher nowadays. As an example, the De-NOx system and DE-SOx system necessitated by the increasingly stringent emission standards, would result in increased exhaust back pressure for those diesel engines adopting such systems. Some ships adopt underwater exhaust system to save space on the working deck and to reduce noise and air pollution, while the hydrostatic pressure under water level has made the exhaust back pressure of diesel engines getting much higher. Under high exhaust back pressure, to keep discharging exhaust unhindered and operating smoothly for diesel engine, it often results in …
Elimination Of Noise In A Ship Cabin Using Multi-Layered Acoustic Boards: An Apso And Sa Approach,
2024
Department of Mechanical and Materials Engineering, Tatung University, Taiwan, ROC
Elimination Of Noise In A Ship Cabin Using Multi-Layered Acoustic Boards: An Apso And Sa Approach, Min-Chie Chiu, Ho-Chih Cheng
Journal of Marine Science and Technology–Taiwan
A high level of noise, combined with pure tones, is often encountered in ship's cabins, leading to severe psychological and physiological issues for the crew. To address this problem, an indoor noise abatement solution becomes necessary that utilizes efficient acoustic boards integrated with resonators, positioned along the inner walls of the cabin. However, the thickness of the acoustic boards must be strictly limited due to maintenance and operational considerations. This limitation results in insufficient sound absorption capabilities and a restricted range of tuned frequencies, as the resonating frequency of a standard Helmholtz resonator is closely tied to its cavity. A …
Numerical Study On The Aerodynamic Performance Of Four Flettner Rotors By Varying Distance And Spin Ratio,
2024
Shipbuilding & Marine Simulation Center, Tongmyong University, Busan, Republic of Korea
Numerical Study On The Aerodynamic Performance Of Four Flettner Rotors By Varying Distance And Spin Ratio, Janghoon Seo, Dong-Woo Park
Journal of Marine Science and Technology–Taiwan
The Flettner rotor is a wind-assisted propulsion system applied in eco-friendly ship to reduce greenhouse gas emissions. As the requirements of international regulations on greenhouse gas emissions become increasingly strict, multiple Flettner rotors are being applied, necessitating the evaluation of their performance with varying design parameters. The present study focuses on the aerodynamic performances of four Flettner rotors with variable design parameters of distance and spin ratio. Distances and spin ratios, including relative spin ratios, are considered. The drag and lift coefficients and lift-to-drag ratio of Flettner rotors are determined using Computational Fluid Dynamics (CFD), and the associated flow fields …
Underwater Image Enhancement Algorithm For Dual Color Spaces,
2024
Henan University, Software College, Longting District, Kaifeng, China, 475000
Underwater Image Enhancement Algorithm For Dual Color Spaces, Xingsheng Shen, Yalin Song, Shichang Li, Xiaoshu Hu
Journal of Marine Science and Technology–Taiwan
Targeting issues related to low contrast, blurring, and loss of detail prevalent in underwater image enhancement algorithms, we propose a dual-color space multiscale residual network (DMR-SCNet) based on SCNet. First, we introduce the HSV color space feature extraction module, which aims to optimize the color representation and saturation of underwater images. Subsequently, we propose the RGB color space denoising module, which focuses on repairing the content and structure of underwater images to enhance their clarity and visual quality. Finally, by designing the residual attention (RAB) module, we aim to further refine the detailed representation and feature extraction of underwater images. …
A Novel Identity Authentication Mechanism For Unmanned Maritime Vessels Communication Based On Mitre Att&Ck Framework,
2024
Dept. of Computer Science and Information Engineering Tamkang University New Taipei City, Taiwan
A Novel Identity Authentication Mechanism For Unmanned Maritime Vessels Communication Based On Mitre Att&Ck Framework, Junxian He, Shih-Hao Chang
Journal of Marine Science and Technology–Taiwan
With the development of the smart shipping industry, unmanned vessel technology is rapidly evolving, accompanied by a demand for robust Internet of Things (IoT) communication security practices. Key communication technologies for the operation of unmanned vessels include external vessel communication. One crucial aspect is the verification of the identities of the parties involved in these communication systems, as this ensures secure and trusted interactions between unmanned vessels and port management authorities. Identity authentication plays a vital role in ensuring the secure communication of unmanned vessels.This paper aims to analyze potential risks related to identity authentication technology in unmanned vessel communication …
