Marine Biology - Science topic

It is necessary to overcome the real-life challenges encountered in detecting marine animals in underwater bodies through computer vision for monitoring their populations and biological data. At the same time, the detectors for such tasks are limited by large parameters, high computation costs, low accuracy, low speed, and unfriendly deployment in...

Seagrass habitats support biodiversity, improve water quality, protect coastlines, and sequester carbon, among other essential ecosystem functions, yet they are declining worldwide due to human activity. Seagrass restoration and conservation can act as nature-based solutions for climate change, garnering growing interest from a diversity of stakeho...

Plankton are microorganisms that play an important role in marine food webs as primary producers in the trophic web. Traditional plankton identification methods using manual microscopy and sampling are time-consuming, labor-intensive, and prone to errors. Deep learning has improved the automation of plankton identification, but it remains challengi...

Con el objetivo de determinar la diversidad de macroinvertebrados y su importancia en el ecositema dulceacuícola de ri?o Seco, se dividio? el ri?o en a?rea de amortiguamiento (sitio 1 y 2) y a?rea de impacto directo (sitio 3), siendo monitoreadas entre los meses de julio y septiembre de 2019. Las muestras fueron tomadas de hojarascas, piedras y pal...

A exploração submarina é um campo de grande importância para os desenvolvimentos científico e tecnológico, com significativas contribuições para diversas áreas. Esta monografia busca compreender a importância da exploração do oceano, identificar os avanços potencialmente alcançáveis, investigar a história e os possíveis futuros desdobramentos no ca...

To make the best-informed decisions on managing marine resources whilst also restoring biodiversity, the creation and analysis of benthic maps is highly valuable. This study focuses on benthic mapping to study patch - and landscape - level processes affecting epifauna and demersal species using Stereo Baited Remote Underwater Video (SBRUV) and Drop...

Whereas all sampling methods induce biases, implementation of different methodologies may amplify challenges associated with numerical comparisons within and across case studies. SCUBA-based underwater sediment sampling, commonly utilised in marine biology and palaeontology, employs two popular meth-odologies: hand collection and HVAC-suction sampl...

VII Всероссийская научная конференция с международным участием “Водоросли: проблемы таксономии и экологии, использование в мониторинге и биотехнологии” проходила в г. Владивосток (Приморский край) с 16 по 20 сентября 2024 г. Организаторами конференции выступили Федеральный научный центр биоразнообразия наземной биоты Восточной Азии ДВО РАН и Национ...

Background Background Stenotrophomonas maltophilia has increasingly become a significant hospital-acquired pathogen due to its multi-resistance and ability to colonize surfaces. While ocular infections caused by S. maltophilia are documented, endogenous endophthalmitis (EE) is rare with only six cases reported in adults, mostly in immunocompromised...

Background and Aims: The genus Pseudobryopsis currently encompasses seven species distributed in tropical and warm-temperate waters. They are separated from the morphological similar genus Trichosolen by chloroplast morphology and the presence of a plug at the base of the gametangia. During the 2022 Seaflower Scientific Expedition, an undescribed s...

Aiming at the influence of factors such as the special optical characteristics of water bodies on the perceptual quality of generated images, this paper proposes the DifSG2-CCL model for reducing the special optical characteristics of water bodies and the DPL-SG2 model for introducing perceptual loss. Combining the ideas of cyclic consistency and s...

The Richard E. Peter 16th Annual Biology Conference is organized by the Biology Graduate Student’s Association at the University of Alberta. This event is a multi-day, interdisciplinary, student run conference that showcases research conducted by graduate and senior undergraduate students in the biological sciences. In alignment with the conference...

Jetting dynamics from bursting bubbles play a key role in mediating mass and momentum transport across the air–liquid interface, and have attracted widespread interest from researchers across disciplines. In marine environments, this phenomenon has drawn considerable attention due to its role in releasing biochemical contaminants, such as extracell...

Placozoa are small disc-shaped animals representing one of the early branching metazoan lineages with only a dozen cell types, fast effector reactions, and complex behaviors. The simplest organization and small cell sizes limit standard microscopy applications. Here, we implement a new methodology and protocol for expansion microscopy, improving bo...

Background. The effects of war on biodiversity, habitats, ecosystem services, and water, seafood, and fishing resources are complex and long-lasting, yet their ongoing environmental analyses are limited. The Russia–Ukraine War (2022–present) comprises a unique ecological situation to examine biodiversity effects on the distinctive cold-temperate no...

Objective. In this study, we performed a bibliometric analysis of the Peruvian scientific production of solid waste.Methodology. A bibliometric analysis was conducted based on records indexed in the Scopus database from 2003 to 2023. The bibliometric indicators examined were productivity by journals, productivity by institutions, productivity by au...

Mauritamide B (1a) is a taurine-connected cyclic guanidino-bromopyrrole alkaloid originally isolated from the marine sponge Agelas linnaei. To date, the total synthesis of taurine-connected guanidino-bromopyrrole alkaloids, including this compound, has not yet been reported. Herein, a total synthesis of (±)-mauritamide B (1b) was achieved by oxidat...

La colección de referencia del Departamento Biología Marina y Limnología y el Centro de Biología Marina y Limnología de la Universidad de Panamá pasa a convertirse en el Museo de Biología Marina y Limnología “Dr. Luis Howell Rivero” en el año 1966. Las colectas de peces se realizaron durante el siglo pasado, en los años 60, 70 y 80. La actualizació...

The oxygen inventory of the global ocean is declining. This phenomenon, known as ocean deoxygenation, has emerged as a fundamental pathway for climate change to alter marine ecosystems. An important concern is how this global oxygen decline will manifest in coastal and oceanic systems that are already subject to low oxygen, or hypoxic conditions. T...

Marine net primary production supports critical ecosystem services and the carbon cycle. However, the lack of consensus in the direction and magnitude of projected change in net primary production from models undermines efforts to assess climate impacts on marine ecosystems with confidence. Here we use contemporary remote sensing net primary produc...

The mudskipper fish is one of the native fishes inhabit in mangrove ecosystem. Mangrove ecosystems are suitable habitats for marine life with high fauna diversity. Information about the feeding habits of mudskipper fish is essential to make domestication efforts for the conservation of mudskipper. Food determine the extent of distribution type and...

A marine-derived Pleosporales fungus, Uzbekistanica storfjordensis, was isolated from driftwood and described as a new species. The fungus was cultivated in liquid media and a molecular networking-driven approach was used to identify potential new secondary metabolites. The targeted compounds were isolated using preparative HPLC-MS, and through ext...

The Krueng Raya waters in Aceh Besar, which serve as a habitat for coral reef ecosystems, face the threat of microplastic pollution. This pollution is caused by human activities such as tourism, fishing, and domestic waste, leading to the generation of plastic waste and microplastics. Microplastics have the potential to disrupt the balance of marin...

We investigate the behavior of a flexible stem completely submerged under a surface gravity wave of finite amplitude using fully resolved direct numerical simulations. By varying the rigidity of the stem over ten orders of magnitude, we explore its motion in the drag-dominated regime with realistic air and water properties. Our findings reveal two...

Bioluminescent bacteria play a crucial role in marine ecosystems, often forming symbiotic associations with marine organisms. In the present study, Photobacterium leiognathi, a bioluminescent bacterium, was isolated and identified from marine squid. A total of 30 samples were collected, and initial screening revealed nine non-luminescent isolates a...

Counting marine species is a challenging task for biologists and marine experts. This paper presents an efficient temporal technique for counting underwater static objects. The proposed method employs deep learning techniques to detect objects over time and an efficient spatial–temporal algorithm to track them, allowing for accurate counting of obj...

Marine life exploration is constrained by factors such as limited scuba diving time, depth restrictions for divers, costly expeditions, safety risks to divers’ health, and minimizing harm to marine ecosystems, where traditional diving often risks disturbing marine life. This paper introduces Nu (named after an ancient Egyptian deity), a 3D-printed...

Underwater image enhancement (UIE) is critical in various applications, including marine biology research, underwater archaeology, and autonomous underwater vehicle (AUV) navigation. The unpredictable nature of underwater environments frequently leads to degradation in contrast, color, and perceptual visual quality. Previous methods using the singl...

Imaging in marine environment is a challenging task due to several reasons, including light variations, color distortions, noise, and limited datasets, which causes inaccurate target classification problems. This paper presents a methodology for image classification in marine biology and environmental research. We proposed the Attention-Driven Dens...

The dissolution of CO2 in seawater as bicarbonate ions (HCO₃⁻) offers a promising alternative to geological storage, provided the process ensures long-term stability and avoids harming marine ecosystems. Storing CO2 in the form of bicarbonate ions could remain effective for geologic timescales, potentially up to 10,000 years [1–3]. This approach in...

Trait-based approaches are revolutionizing our understanding of high-diversity ecosystems by providing insights into the principles underlying key ecological processes, such as community assembly, species distribution, resilience, and the relationship between biodiversity and ecosystem functioning. In 2016, the Coral Trait Database advanced coral r...

Comparto esta "Guía de invertebrados marinos intermareales de la Región del Biobío", desarrollada a través de una metodología de Aprendizaje Basado en Proyectos, aplicada en el curso de Introducción a la Biología Marina de la Universidad Católica de la Santísima Concepción.

Citizen Science initiatives have a worldwide impact on environmental research by providing data at a global scale and high resolution. Mapping marine biodiversity remains a key challenge to which citizen initiatives can contribute. Here we describe a dataset made of both underwater and aerial imagery collected in shallow tropical coastal areas by u...

Anisarchus medius (Reinhardt, 1837) is a widely distributed Arctic fish, serving as an indicator of climate change impacts on coastal Arctic ecosystems. This study presents a chromosome-level genome assembly for A. medius using PacBio sequencing and Hi-C technology. The PacBio assembly totaled 739.07 Mb across 697 contigs, with a Contig N50 of 10.0...

Squid primary cells from various tissues and ages are isolated, maintained in culture, and express exogenous genes. This protocol opens up numerous opportunities in molecular biology, neuroscience, and marine biology, enabling molecular and cellular-level investigations into processes specific to squids, including their complex behaviors, rapid col...

Marine habitats are increasingly facing human-induced stressors, posing significant threats to global marine biodiversity. Understanding the ecological, economic, and social importance of marine ecosystems is paramount. This study conducts a comprehensive bibliometric analysis of seaweed biodiversity from 1992 to 2023, aiming to (i) quantify the li...

In recent years, there has been a surge of research focused on underwater image enhancement using Generative Adversarial Networks (GANs), driven by the need to overcome the challenges posed by underwater environments. Issues such as light attenuation, scattering, and color distortion severely degrade the quality of underwater images, limiting their...

Studying the ecology of ancient organisms requires a tremendous amount of data, as in the case of prehistoric sharks where our knowledge is based mostly on teeth. Shark Tooth Forensics is a participatory science project tackling the problem of deciphering the ecology of ancient sharks with assistance from public school students. Traditionally, pale...

Mangrove forests thrive along global tropical coasts, acting as a barrier that protects coastlines against storm surges and as nurseries for an entire food web. They are also known for their high carbon sequestration rates and soil carbon stocks. We introduce a new global mangrove canopy height map generated from TanDEM-X spaceborne elevation measu...

The environmental impact of the textile industry is a growing concern, with significant contributions to global pollution and waste. This thesis examines the interplay between fashion, consumer behavior, and sustainability, focusing on the role of synthetic textiles in microplastic pollution. Key topics include the lifecycle of clothing, from mater...

Controls on organic carbon preservation in marine sediments remain controversial but crucial for understanding past and future climate dynamics. Here we develop a conceptual-mathematical model to determine the key processes for the preservation of organic carbon. The model considers the major processes involved in the breakdown of organic carbon, i...

A partnership between the Iberostar Foundation and the University of the Balearic Islands through the Chair of the Sea, Coastal Health Monitoring Scheme has a dual purpose: training students in marine biodiversity monitoring and collecting critical coastal ecosystem data. Launched in 2021 on Ibiza with 12 stations, it now boasts 50 stations: 20 in...

This article explores the possibilities of teaching about how perspectives on the Abrahamic religions could influence climate change action-taking. Resources feature the perspectives of a Reform Judaism organization, a Christian climate scientist, five leading theologians on Islamic thought and the environment, a distinguished scholar in marine bio...

Segmentation of digital images of fish is an important challenge in image processing in the field of marine biology and aquaculture. Extraction of fish shape features through image segmentation can improve accuracy in species identification and fish population monitoring. The U-Net method, which is based on deep learning, has been proven effective...

The world beneath the waves has always fascinated and mystified us. The oceans, covering more than two-thirds of our planet, remain a realm largely unexplored and unknown. Yet, as technology advances, we are beginning to unveil the secrets of the deep, and one of the key tools in this exploration is the underwater sensor network. This note is a jo...

En el marco del diseño de vehículos de exploración de océanos subterráneos en cuerpos celestes como Europa y Encélado, este estudio propone un enfoque biomimético basado en organismos marinos de las profundidades, como peces invertebrados y microbios resistentes a altas presiones y bajas temperaturas. La metodología incluyó una revisión exhaustiva...

Underwater image processing is deemed an essential aspect of marine exploration that provides a high-level approach toward good visibility and acquisition of data in harsh environments. In this study, the use of a fully-equipped underwater robot with the latest imaging technologies to survey underwater data and analyze it properly forms the nucleus...

We investigate the behaviour of a flexible stem completely submerged under a surface gravity wave of finite amplitude using fully resolved direct numerical simulations. By varying the rigidity of the stem over ten orders of magnitude, we explore its motion in the drag-dominated regime with realistic air and water properties. Our findings reveal two...

Jeannette Villepreux Power (1794–1871), francese, fu una donna estremamente poliedrica che visse per 25 anni a Messina (1818–1842) interessandosi a diversi settori delle scienze naturali e occupandosi di divulgazione. É considerata una pioniera della biologia marina, nota principalmente per l’invenzione degli acquari e per la risoluzione della ques...

The ocean has absorbed ~one third of the excess atmospheric carbon dioxide (CO2) released since the Industrial Revolution. When the ocean absorbs excess CO2, a series of chemical reactions occur that result in a reduction in seawater pH, a process called ocean acidification. The excess atmospheric CO2 is also resulting in warmer seawater temperatur...

In this research, students at SMPN 9 Tanjungpinang, a school in a unique coastal region of Indonesia which is Tanjungpinang, are asked about their knowledge of and concerns about the maritime environment. 33 coastal students filled out written questionnaires as part of a descriptive qualitative research approach, and National Geographic educational...

Se presenta un análisis bibliométrico basado en los artículos científicos producidos por investigadores chilenos en los primeros 21 años del siglo XXI para trazar el desarrollo de la ciencia sobre mamíferos marinos, identificar las especies y temas de investigación más estudiados, así como los investigadores e instituciones chilenas involucradas. L...

Underwater acoustic communication plays a critical role in various applications such as marine biology, environmental monitoring, and underwater navigation. However, the underwater environment presents unique challenges, particularly the phenomenon of multipath propagation, which can severely impact the performance of communication systems. This pa...

The Southern Ocean, a region highly vulnerable to climate change, plays a vital role in regulating global nutrient cycles and atmospheric CO2 via the biological carbon pump. Diatoms, photosynthetically active plankton with dense opal skeletons, are key to this process as their exoskeletons are thought to enhance the transfer of particulate organic...

Pinfish (Lagodon rhomboides) are highly abundant in coastal ecosystems of the Gulf of Mexico and western Atlantic Ocean and serve as a crucial link in marine food webs. Despite their ecological relevance, little is known about this species' susceptibility to anthropogenic climate change. Here, we characterized patterns of mitochondrial genetic dive...

Since 2004, marine biodiversity inventory data have been systematically collected with diving, video, and benthic sampling methods in Finland. To date, this collection of data consists of more than 194 000 spatially explicit observations, covering more than 280 aquatic genera, representing mainly macroalgae, vascular plants, water mosses, and inver...

Marine microorganisms are central to global ecological and biogeochemical systems, with their intricate interactions shaping community dynamics. While meta-omics data sets have revolutionized marine microbial ecology, they often provide fragmented insights, underscoring the need for advanced integrative modeling frameworks. In this review, we highl...

The marine ecosystem is now a noticeable topic in the worldwide range, affecting the lives of billions of people as well as the entire environment of the planet. The fishing industry, which is closely combined with the marine ecosystem, might have a wide negative impact on the marine ecosystem, such as the destruction of marine biodiversity, destru...

Underwater fish object detection serves as a pivotal research direction in marine biology, aquaculture management, and computer vision, yet it poses substantial challenges due to the complexity of underwater environments, occultations, and the small‐sized and frequently moving fish in aquaculture. Addressing these challenges, we propose a novel und...

Terrestrial actinomycetes in the genus Streptomyces have long been recognized as prolific producers of small-molecule natural products, including many clinically important antibiotics and cytotoxic agents. Although Streptomyces can also be isolated from marine environments, their potential for natural product biosynthesis remains underexplored. The...

In May and June of 2021, marine microbial samples were collected for DNA sequencing in East Sound, WA, USA every 4 hours for 22 days. This high temporal resolution sampling effort captured the last 3 days of a Rhizosolenia sp. bloom, the initiation and complete bloom cycle of Chaetoceros socialis (8 days), and the following bacterial bloom (2 days)...

O Ciclo de Seminários Temáticos do PET Biologia da Universidade Federal do Maranhão é uma das atividades indispensáveis no planejamento do grupo. São priorizados temas pouco abordados nas disciplinas ou que estejam em evidência na área de biodiversidade. Os seminários são abertos e ministrados pelos petianos, normalmente em duplas, e tem grande imp...

This paper examines the impact and effectiveness of educational Universally Designed (UD) Augmented Reality (AR) applications compared to traditional paper-based counterparts. The study evaluates accessibility, usability, user experience, and short-term learning outcomes in marine biology, human anatomy, and cultural history. Thirty-six participant...

Knowledge of the geographic distribution and connectivity of marine populations is essential for ecological understanding and informing management. Previous works have assessed spatial structure by quantifying exchange using Lagrangian particle-tracking simulations, but their scope of analysis is limited by their use of predefined subpopulations. T...

Effective ocean management asks for up-to-date knowledge of marine biogeography. Here we compare eDNA and gear-based assessments of marine fish populations using an approach that focuses on the commonest species. The protocol takes advantage of the “hollow curve” of species abundance distributions, with a minority of species comprising the great ma...

Fucoid forests are areas dominated by marine brown seaweed in the taxonomic order Fucales that, like the better‐known marine foundation species—corals, kelps, seagrasses, salt marshes, and mangroves—are threatened by anthropogenic stressors. Fucoid forests are fabulous and important because they, like the better‐known marine foundation species (i)...

Machine Learning is the branch of Artificial Intelligence in which a computer is fed with data and based on that data it tries to find out solution on its own. It encompasses the procedure for feeding algorithms information to create the algorithms realize patterns in the data and then increase the performance of the algorithms. A Convolutional Neu...

This is a Systematic Literature Review (SLR) research that aims to identify the marine potential of Tarakan City which can be used as teaching material in Marine Biology courses. Search using the Publish or Perish 8 application by analyzing articles indexed by Google Scholar and Crossref. After carrying out the process of identification, screening,...

Physics and biology are two branches of science that have many connections. In marine biology courses, students must have a good basic concept of physics. The purpose of this study was to determine whether students’ physics knowledge is sufficient to follow marine biology lectures. This study is a quantitative descriptive study. The study was condu...

Glycolysis is a fundamental topic in the biochemistry curriculum, pivotal for understanding glucose metabolism, and it stands as a challenging subject in various life science disciplines, including microbiology, marine biology, zoology, cell biology, and bioengineering. The process of glycolysis encompasses 10 successive reactions, involving nume...

Tetrodotoxin (TTX) was first isolated in the early 20th century and has significant public health implications, especially in areas where puffer fish are consumed, such as Japan. Research on TTX spans multiple disciplines, including toxicology, pharmacology, marine biology, and neurology, and efforts are underway to understand its mechanism of acti...

Underwater Wireless Sensor Networks (UWSN) is one of the most emerging branches of wireless sensor networks. They are used extensively in environmental monitoring, oceanography, and marine biology. Energy efficiency, signal attenuation, and changeable climatic conditions are just a few of the major obstacles these networks must overcome. The criter...

I dati storici sulla biodiversità contenuti nelle collezioni museali sono fondamentali per lo studio e la comprensione delle dinamiche di funzionamento dei sistemi ecologici attuali. Per tale motivo è indispensabile garantirne la migliore conservazione e fruibilità. In questo quadro è stato avviato un progetto pilota che ha riguardato 100 lotti di...

This article presents Alfredo Magalhães Ramalho’s scientific correspondence between 1919 and 1949, both nationally and internationally. It consists of 181 unpublished letters, exchanged with 30 relevant figures belonging to 11 countries, including France, the UK, Croatia, Japan, Germany, Canada, Sweden, Norway, Morocco, Belgium and Spain. This corr...

The establishment of a well-adapted and accurate feeding regimen is a fundamental determining factor in the maintenance of shark species in captivity. Replicating the natural diet in captivity is commonly accepted and recommended. Given the diverse nutritional composition of prey, supplementation may become necessary. The captive environment poses...

Riverine nutrient export is an important process in marine coastal biogeochemistry and also impacts global marine biology. The nitrogen cycle is a key player here. Internal feedbacks are shown to regulate not only nitrogen distribution, but also primary production and thereby oxygen concentrations. Phosphorus is another essential nutrient and inter...

Sonar image synthesis is crucial for advancing applications in underwater exploration, marine biology, and defence. Traditional methods often rely on extensive and costly data collection using sonar sensors, jeopardizing data quality and diversity. To overcome these limitations, this study proposes a new sonar image synthesis framework, Synth-SONAR...

This paper outlines the history of scientific research developed in the Portofino Promontory, located in the centre of the Ligurian Sea. The chronicles span over two centuries, from the late 18th century to the present day. Portofino is now recognised as one of the best-known areas in the world regarding marine biological communities and their temp...

The world of fishes is as diverse and fascinating as the aquatic environments they inhabit. This book, *Mesmerizing World of Fishes*, offers a deep dive into the remarkable lives of fish, focusing on their behaviors, adaptations, and the various roles they play in ecosystems and as food commodities. From their unique survival strategies to thei...

Dori is an autonomous soft robotic fish. The inspiration behind creating Dori stems from the desire to develop underwater robots that can mimic the fluid movements of real fish. This technology aims to enhance underwater exploration, surveillance, and environmental monitoring by providing a more maneuverable and less intrusive alternative to tradit...

Simple Summary Haploid embryonic stem cells (ESCs), with pluripotency and haploidy, hold significant value in the fields of developmental biology and reproductive technology. Here, the resources of haploid ESC line (hMMES1) from marine medaka, an emerging fish model for marine biology, were derived to address this need. The hMMES1 line was characte...

Underwater object detection is vital for diverse applications, from studies in marine biology to underwater robotics. However, underwater environments pose unique challenges, including reduced visibility due to color distortion, light attenuation, and complex backgrounds. Traditional computer vision methods have limitations, prompting the implement...

Long before marine laboratories were commonplace, a few visionary scientists created the first of a growing number of biological field stations in the second half of the 19th century. This article tells the 150‐year tale of the rise and fall of six marine stations that belonged to three different universities and were sometimes operated simultaneou...

As an important research content in the field of marine biology and ecology, aquatic biological signal (ABS) recognition is of great significance for understanding marine ecosystems, protecting biodiversity, and monitoring environmental changes. To improve the recognition accuracy of ABS, this paper proposes a new ABS recognition method based on mo...

Object segmentation, a key type of image segmentation, focuses on detecting and delineating individual objects within an image, essential for applications like robotic vision and augmented reality. Despite advancements in deep learning improving object segmentation, underwater object segmentation remains challenging due to unique underwater complex...