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Molecular characterization of a short neuropeptide F signaling system in the swimming crab, Portunus trituberculatus, and its role in ovarian development Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-25 Qi Zhou, Xiafei Li, Xiquan Shen, Dongfa Zhu, Xi Xie
Short neuropeptide F (sNPF) is a neuropeptide that widely distributed among arthropods. This neuropeptide has been proposed to play pleiotropic roles in insects, but its physiological functions in crustaceans are poorly understood. Here, we cloned the cDNA sequences of sNPF and its putative receptor (sNPFR) from the swimming crab, Portunus trituberculatus, and determined their possible roles during
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Retrieval and spatiotemporal variation of total suspended matter concentration using a MODIS-derived hue angle in the coastal waters of Qinhuangdao, China Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-25 Lin Wang, Xiang Wang, Qinghui Meng, Yanlong Chen, Xinxin Wang, Lingling Jiang, Yuhao Shang
The CIE hue angle has significant potential in marine ecology and environment monitoring using remote sensing methods. It is calculated from the remote sensing reflectance (Rrs) of all visible bands, which serves as a comprehensive indicator of seawater radiance information and represents one of the key quantitative parameters for assessing seawater color. In this study, a remote sensing retrieval
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The impact of tropical cyclone outer size on ocean surface responses Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-25 Zhenxin Ruan, Bo Li, Chengcheng Yu, Ruibin Ding, Peng Bai, Qiong Wu
We used daily sea surface temperature (SST) data and hourly drifter data to investigate ocean responses to tropical cyclone (TC) intensity and outer size (wind radius of 34 kt, or R34) in the Northwest Pacific. Results showed that SST cooling is more sensitive to TC R34 than to TC intensity; namely, TCs with a larger R34 cause stronger SST cooling regardless of their intensity. TCs with an R34 ≥125
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Understanding ocean stratification and its interannual variability in the northeastern Chukchi Sea Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-25 Jiaxu Zhang, Wei Cheng, Phyllis Stabeno, Milena Veneziani, Wilbert Weijer, Ryan M. McCabe
Ocean stratification on Arctic shelves critically influences nutrient availability, essential for primary production. However, discerning the changes in stratification and their drivers is challenging. Through the use of a high-resolution ocean–sea-ice model, this study investigates the variability in stratification within the northeastern Chukchi Sea over the period from 1987 to 2016. Our analysis
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Distribution of native and non-indigenous bivalves and their settlers along an urban gradient Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-25 Robin Pierre Maximilien Gauff, Francesco Mugnai, Francesco Paolo Mancuso, Francesca Porri, Federica Costantini, Laura Airoldi
Marine coastal habitats are often characterized by strong gradients of anthropogenic disturbance such as pollution, typically most severe at urban waterfronts. These variations create stress for local organisms leading to their distribution along the disturbance as a function of their tolerance. non-indigenous species (NIS) are considered more tolerant to anthropogenic disturbances than their native
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Pattern of total organic carbon in sediments within the mangrove ecosystem Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-25 Yue Li, Chuqi Long, Zhijun Dai, Xiaoyan Zhou
The sedimentary total organic carbon (TOC) in mangrove ecosystems plays an essential role in the global carbon storage. Nevertheless, little information is available about the pattern of TOC in sediments varying from bare and flat to those beneath mangroves. To find out the roles of new-developing mangroves in sedimentary TOC accumulation, a serials of sediment samples were collected from the creek
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Machine learning-based modeling of chl-a concentration in Northern marine regions using oceanic and atmospheric data Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-25 Maxim Aleshin, Svetlana Illarionova, Dmitrii Shadrin, Vasily Ivanov, Vladimir Vanovskiy, Evgeny Burnaev
Chl-a concentration is one of the key characteristics of marine areas related to photosynthesis, along with oxygen levels and water salinity. Most studies focus on estimating chl-a concentration in closed water bodies, rivers, and coastal areas of the tropical and temperate Earth belts and are therefore limited to specific regions and also require direct measurements and chemical analysis to obtain
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Information on operational sea ice products and current and future activities of the German ice service Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-24 Wiebke Aldenhoff, Jürgen Holfort
The ice service at the German Federal Maritime and Hydrographic Agency and its predecessors has been committed to the safety and easiness of ship navigation for more than 100 years. Within this paper, an overview of the operational products issued by the German ice service on a daily to weekly basis throughout the northern hemisphere winter season is given. These comprise written reports, ice charts
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Hydrodynamic performance of a submersible net cage integrated with an offshore platform Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-24 Zhenglin Tian, Hui Yang, Hongjie Wen
The integrated development of offshore platform and net cage is a significant concern in ocean engineering. To optimize cost-effectiveness and maximize the utilization of limited ocean space resources, a composite structure is proposed, which integrates a submersible net cage onto the steel pipe piles of offshore platform. Based on the OpenFOAM software package, a numerical model is developed to assess
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Iron species and sulfur isotopic compositions of authigenic pyrite in deep-sea sediments at southern Hydrate Ridge, Cascadia margin (ODP Leg 204): implications for non-steady-state depositional and diagenetic processes Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-24 Chenhui Liu, Shao-Yong Jiang, Xin Su, Xiaopeng Bian, Hai Ding, Da Li, Tao Yang
Two accretionary sediment sequences from Sites 1245 and 1252 recovered during Ocean Drilling Program (ODP) Leg 204 at southern Hydrate Ridge were investigated to explore the response of geochemical partitioning of iron and sulfur isotopic composition of authigenic pyrite to non-steady-state depositional and diagenetic scenarios. Five iron species were characterized by a modified sequential extraction
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Decadal timescale evolution of coral islands: insights from Lakshadweep Archipelago Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-24 Shradha Menon, Pankaj Khanna, Saikat Kumar Misra, Stephan J. Jorry
Low–lying coral islands are susceptible to rising sea levels and climate change, posing risks to island habitability over the next century. The decadal timescale evolution of the islands can provide an understanding of the governing controls of change and island response. This study investigates variations in the shoreline morphology of the Lakshadweep coral islands (Northern Indian Ocean/Arabian Sea)
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Nutritional composition and transcriptome analysis of the newly hatched Anguilla japonica from embryo to preleptocephali obtained from artificial reproduction Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-24 Kang Li, Yuangu Li, Tiezhu Li, Rongfeng Cui, Liping Liu
The starter diet for Japanese eel (Anguilla japonica) has always been a difficult problem for the realization of total artificial reproduction. Therefore, this research analyzed the nutritional composition of artificially fertilized eggs, and transcriptome of samples from early hatchlings of fry to better understand nutrients requirements. The composition of crude lipid and crude protein in fertilized
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Chronicles of Kyphosus in the Mediterranean Sea: new records and complete mitogenomes support the scenario of one expanding fish species Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-24 Alessandro Nota, Francesco Tiralongo, Alfredo Santovito, Antonio Torroni, Anna Olivieri
The Mediterranean Sea is a biodiversity hotspot, being home to a vast array of marine species. Furthermore, seawater warming is facilitating the arrival and spread of new thermophilic species, posing a severe threat to biodiversity. Among the species currently extending their range and increasing in abundance in Mediterranean waters, sea chubs (genus Kyphosus) are one of the most enigmatic. One challenge
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Behavioral response of megafauna to boat collision measured via animal-borne camera and IMU Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-24 Taylor K. Chapple, David E. Cade, Jeremy Goldbogen, Nick Massett, Nicholas Payne, Alexandra G. McInturf
Overlap between marine megafauna and maritime activities is a topic of global concern. Basking sharks (Cetorhinus maximus; CM) are listed as Globally Endangered under the IUCN, though reported sightings appear to be increasing in Ireland. While such trends in the region are welcome, increasing spatiotemporal overlap between CM and numerous water users poses an increased risk of boat strikes to the
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Groundwater level fluctuation caused by tide and groundwater pumping in coastal multi-layer aquifer system Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-23 Qiaona Guo, Jinhui Liu, Xufen Zhu, Yunfeng Dai
This paper considered the groundwater head fluctuation induced by tide and pumping in the coastal multi-layered aquifer system. The multi-layered aquifer system comprises an unconfined aquifer, an upper confined aquifer, and a lower confined aquifer. An aquiclude exists between each two aquifers. All the layers terminate at the coastline. The new analytical solutions describing groundwater head variation
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Eliciting expert opinion on GIS use for surveillance and disease response in the aquatic animal health domain Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-23 Giorgia Riuzzi, Federica Sbettega, Saraya Tavornpanich, Paulette Posen, Barbara Contiero, Matteo Mazzucato, Severino Segato, Nicola Ferrè
Since the 1980s, Geographical Information Systems (GIS) have been integrated into animal farming technologies for purposes such as enhancing production performances and veterinary epidemiology. In aquaculture, however, there seems to be limited application of GIS, and its potential is widely overlooked, especially for aquatic animal health management. This study describes the results of a world expert
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“Dynamics of chromophoric dissolved organic matter in the Atlantic Ocean: unravelling province-dependent relationships, optical complexity, and environmental influences” Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-23 Bita Sabbaghzadeh, Guenther Uher, Robert Upstill-Goddard
We report on the spatial distributions and optical characteristics of chromophoric dissolved organic matter (CDOM) in the sea surface microlayer (SML), subsurface seawater (SSW), and water column profiles down to 500 m across a range of Atlantic Ocean biogeochemical provinces during two cruises of the UK Atlantic Meridional Transect program (AMT24 and AMT25). We measured the CDOM absorption coefficient
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Geophysical and geochemical investigations of underwater sulphurous seeps from Western Black Sea (Mangalia area, Romania), in support of habitat conservation Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-23 Adrian Popa, Irina Marilena Stanciu, Virgil Drăguşin, Adrian Teacă, Sorin Vasile Balan, Mihai Emilian Popa, Gabriel Ion, Bogdan-Adrian Ispas
Mangalia area harbors in the western Black Sea a distinctive marine environment thriving under specific hydrochemical conditions, largely influenced by a significant number of sulphurous springs occurring in shallow marine waters. These springs led to the designation of the area as part of the Natura 2000 Marine Protected Area (MPA) network at European level (Underwater Sulphurous Springs from Mangalia
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Evolution characteristics and mechanisms of the spring warm pool in the Bay of Bengal Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-23 Wenshu Lin, Yun Qiu, Xutao Ni, Xinyu Lin, Tongtong Liu
Knowledge of spring warm pool in the Bay of Bengal (BoBWP) is key for further understanding the climate variability in this region and beyond, but little is known about the BoBWP climatological state and the related mechanisms. In this study, we investigate the spatial structure and evolution of the BoBWP using daily Optimum Interpolation SST data from 1982-2022 in combination with multi-source data
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Effects of dietary Silphium perfoliatum L. on the growth performance, immunity, intestinal health, and resistance against Nocardia seriolae of largemouth bass (Micropterus salmoides) Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-23 Hao Tang, Sheng Luo, Jifeng Chen, Qianjin Zhou, Guanjun Yang, Jianfei Lu, Jiong Chen
The present study was conducted to evaluate the effect of dietary Silphium perfoliatum L. on growth performance, immunity, intestinal health, and resistance against Nocardia seriolae of largemouth bass. Four dietary concentrations of S. perfoliatum L. were prepared: 0% (SPL0), 1% (SPL1), 2.5% (SPL2.5), and 5% (SPL5). After 60 d feeding, a challenge test was conducted by injecting N. seriolae intraperitoneally
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Mapping for connection, a life beyond mapping for control: lessons from ‘mapping-as-performance’ with Empatheatre in South Africa Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-23 Jennifer Whittingham, Dylan McGarry
This paper critically examines the intersections of Science, colonialism, and cartography in shaping perceptions of the ocean and its human-nature relationships. Drawing on Postcolonial Science and Technology Studies (PCSTS) and Decolonial Theory, it scrutinizes historical mapping practices, revealing how they perpetuated ontological hierarchies and controlled narratives of the ocean. Through archival
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Effects of exercise training on growth and physiology of large-mouth bass (Micropterus salmoides) reared in a recirculating aquaculture system Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-22 Mingdong Ji, Haijun Li
Large-mouth bass originally lived in rivers and lakes and now is often raised in recirculating aquaculture systems (RAS). However, the shortcoming of RAS is that there is very limited space for swimming fish in a high-density culture environment, thus leading to a lack of exercise. To investigate the effects of exercise training on growth performance, digestive enzymes, stress, and antioxidant capacity
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Morphometric characteristics of Antarctic krill (Euphausia superba) and finfish bycatch in the krill fishery in the waters of South Orkney Islands during the 2022/23 fishing season Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-22 Zhongqiu Wang, Shuo Ma, Yongjin Wang, Lumin Wang
Determination of bar spacing of bycatch reduction devices (BRDs) should consider species composition and morphometric characteristics (particularly width) of target species krill and bycatch. This study conducted a scientific investigation of the finfish bycatch in the Antarctic krill (Euphausia superba) trawl fishery by the fishing vessel SHEN LAN in the waters surrounding the South Orkney Islands
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Configuration analysis of marine economic resilience based on 11 coastal provinces of China: an fsQCA approach Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-22 Dong Liu, Zhenyu Huang
IntroductionThe marine economy has played an important role in stabilizing national economic growth and ensuring economic security. Achieving high-quality and sustainable development of the marine economy is a strategic task for China to build a maritime power. Confronting various risk factors such as financial crises, natural disasters, geopolitical conflicts, industrial transformation, and public
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UV-absorbing mycosporine-like amino acids in the eyes of temperate marine and freshwater fish species Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-22 Jane Bonin, Fabian J. Hammerle, Markus Ganzera, Uwe Krumme, Ulf Karsten
Ultraviolet radiation (UVR) is the photochemically most reactive waveband of incident solar irradiation. Despite high absorption in aquatic environments, UVR causes numerous biochemical, genetic, and cytotoxic effects in aquatic organisms. To counteract UVR stress, many of those species are able to synthesize, accumulate, or acquire UV-sunscreen compounds for photoprotection from their diet. The most
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Fish Acoustic Detection Algorithm Research: a deep learning app for Caribbean grouper calls detection and call types classification Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-22 Ali K. Ibrahim, Hanqi Zhuang, Michelle Schärer-Umpierre, Caroline Woodward, Nurgun Erdol, Laurent M. Chérubin
In this paper, we present the first machine learning package developed specifically for fish calls identification within a specific range (0–500Hz) that encompasses four Caribbean grouper species: red hind (E. guttatus), Nassau (E. striatus), yellowfin (M. venenosa), and black (M. bonaci). Because of their ubiquity in the soundscape of the grouper’s habitat, squirrelfish (Holocentrus spp.) sounds along
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Effects of Bacillus subtilis-fermented soybean meal replacing fish meal on antioxidant activity, immunity, endoplasmic reticulum stress and hepatopancreas histology in Pacific white shrimp (Litopenaeus vannamei) Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-22 Songming Chen, Jieyu Dai, Yan Chen, Qiang Chen, Fen Dong, Congcong Wang, Yulong Sun, Jiteng Wang, Tao Han
IntroductionScreening excellent bacterial strains for fermentation is the key to improving the nutritional value and bioavailability of soybean meal (SBM). This study investigated the application of Bacillus subtilis-fermented soybean meal (FSBM) on the feed of Pacific white shrimp (Litopenaeus vannamei).MethodsFSBM was used to replace 0%, 25%, 50%, 75%, and 100% fish meal, and the feeding trial was
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Research on the economic loss prediction and vulnerability risk zoning of coastal erosion disaster: a case study from Liaoning, China Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-22 Chuanjun Wang, Yixiong He, Gongbo Ma, Weiwei Wang
IntroductionCoastal erosion is widely distributed globally, with sandy coasts being particularly prominent, causing significant economic losses to coastal areas. This study focuses on the coastal areas of Liaoning Province, China, which represent typical sandy beach erosion.MethodsBased on the assessment of coastal erosion disaster losses, a multivariate variable-weight combination prediction model
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Effects of dietary hot water extracts of Chlorella vulgaris on muscle component, non-specific immunity, antioxidation, and resistance to non-ionic ammonia stress in Pacific white shrimp Litopenaeus vannamei Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-22 Dan Zhang, Shuyi Shi, Xuying Jia, Wenli Zhou, Xiaoyu Sun, ChaoJie Han, Yunliang Lu
Hot water extract of Chlorella vulgaris (CVE) is a biologically substance that enhances organism’s immune function and antioxidative capacity. This study evaluated the effect of supplementation with various concentrations of CVE on muscle nutritional components, non-specific immunity, antioxidation, and resistance to non-ionic ammonia (NH3-N) stress in Litopenaeus vannamei over 45 days using diets
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Sea ice concentration inversion based on different Arctic sea ice types Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-19 Xingdong Wang, Zehao Sun, Zhi Guo, Yanchuang Zhao, Yuhua Wang
The ASI algorithm uses the same sea ice and seawater tie-points when inverting polar sea ice concentration (SIC), but this approach does not fully consider the differences between different polar sea regions and the impact of different sea ice characteristics on SIC results. To make up for this deficiency, the SIC inversion algorithm based on different types of Arctic sea ice is proposed. The proposed
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Is OSPAR 98/3 science-based politics or politics-based science? Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-19 Nicole Paces, Abigail J. Davies, Astley Hastings
Man-made structures in the marine environment such as offshore Oil & Gas infrastructure are known to provide a hard substrate that enables ecosystems to develop on and around them. Current decommissioning practices on the UK Continental Shelf are mandated by the OSPAR Decision 98/3 with the premise of a clean seabed at its core, meaning that it is the expectation that all infrastructure is completely
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Shifts in macroalgae composition alters carbon flow in Coastal Baltic Sea ecosystems: implications for dissolved organic carbon bioavailability and flux Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-19 Jack R. Hall, Kristjan Herkül, Federico Baltar, Christopher D. Hepburn, Georg Martin
The extracellular release of dissolved organic carbon (DOC) from marine macroalgae supports coastal ecosystem function by supplying photosynthetically fixed carbon to higher trophic levels via the microbial loop. Despite its widely acknowledged biogeochemical importance, DOC is not typically included in primary production estimates of coastal systems. Additionally, little is known about how changes
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Impacts of phytoplankton availability on bigeye tuna (Thunnus obesus) recruitment in the Indian Ocean Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-19 Yang Wang, Yuying Zhang, Zhe Geng, Jiangfeng Zhu
IntroductionA sustainable fishery relies on consistent and substantial recruitment. There is, however, considerably high mortality among fish larvae during their early development. One of the most important factors determining larval survival is foraging success. Bigeye tuna is among the most important commercial species in the Indian Ocean. Despite being routinely researched and assessed, it remains
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Integrative computational framework to decipher the functions of shell proteins in biomineralization Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-19 Wentao Dong, Liping Xie, Rongqing Zhang
Mollusk shells contain biominerals with remarkable mechanical properties enabled by a small fraction of embedded organic matrix proteins. However, the specific molecular functions of most shell proteins have remained elusive. Traditional genomics and functional studies are extremely laborious to identify key components. To address this, we developed an in-silico pipeline integrating protein structure
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Cetaceans of north-western continental Africa (Morocco to Liberia): diversity and distribution Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-19 Ana M. Correia, Marieta Mihova, Ágatha Gil, Cláudia Oliveira-Rodrigues, Luís Afonso, Raul Valente, Massimiliano Rosso, Isabel Sousa-Pinto, Graham J. Pierce
The north-western coast of Africa is one of the most productive marine systems in the world, where a high diversity of cetacean species has been recorded. However, management of human activities that impact cetacean populations in the area is inadequate, in part due to poor knowledge on cetacean occurrence and the lack of systematic surveys. We reviewed existing knowledge on cetacean distribution between
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High-light pronounced the effects of stocking density on photosynthesis and nutrients uptake of the bloom-forming green alga, Ulva linza Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-19 Menglin Bao, Qi Zhang, Zihan Xu, Baoqi Li, Hongyan Wu, Shasha Zang, Fang Yan, Zhiguang Xu, Ning Liu
In recent years, the periodic outbreak of green tides in the coastal areas of China, caused by the combined effects of environmental changes and human activities, has been attracting extensive attention due to the serious negative impacts on the coastal marine ecosystem. In the study, the samples of Ulva linza, a green tide species, were cultivated under two light intensities (LL: 80 μmol photons m-2
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Artificial intelligence in marine ecosystem management: addressing climate threats to Kenya’s blue economy Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-18 Brigid K. Gesami, Jacob Nunoo
This study investigates the application of Artificial Intelligence (AI) in monitoring and managing marine ecosystems to address the impacts of climate change on Kenya’s Blue Economy. It aims to assess the threats posed by climate change to these ecosystems and explore the potential of AI solutions to enhance adaptation and resilience. The research employs a comprehensive review of secondary data sources
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3D imaging shows nano- and microparticles are internalized by salmon skin and corneal epithelial cells Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-18 Dhivya B. Thiyagarajan, Marie H. S. Stette, Bilal M. Afzal, Balpreet S. Ahluwalia, Krishna Agarwal, Roy A. Dalmo, Deanna L. Wolfson
The rising problem of plastic pollution is becoming one of the major environmental issues for the world. In the ocean, plastics undergo degradation into smaller microplastics (MPs) and nanoplastics (NPs). Wild fish and farmed salmon would likely be exposed to these NPs and MPs both through skin and through skin wounds. Keratocyte cells, located in the skin epithelial layer, are scavenger cells which
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Sedimentary biogeochemical gradients across the Sunda Shelf in the South China Sea and correlations with satellite observations Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-18 Yuanfang Zhang, Lin Deng, Zaiming Ge, Lin Guo, Qian P. Li
The sediment biogeochemistry of phosphorus (P) and biogenic silica (BSi) in the southern South China Sea shelf (SSCS) is inadequate understood. Here, we examine the spatial distributions of P species and BSi in surface sediments across the Sunda Shelf and explore their relationships with satellite data of sea surface chlorophyll-a (Chla), suspended particulate matter (SPM), particulate organic carbon
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Forecasting storm tides during strong typhoons using artificial intelligence and a physical model Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-18 Yulin Wang, Jingui Liu, Lingling Xie, Tianyu Zhang, Lei Wang
The combination of typhoon-induced storm surges and astronomical tides can result in extreme seawater levels and disastrous effects on coastal socioeconomic systems. The construction of an appropriate wind field has consistently been a challenge in storm tide forecasting and disaster warning. In this study, we optimized a nonlinear regression formula based on the C15 model to determine the maximum
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Integrated transcriptome and 16S rDNA analyses reveal that acute heat stress induces intestinal damage in Gymnocypris eckloni Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-18 Yuting Duan, Hejiao Li, Junting Li, Shuhao Bai, Suxing Fu, Yinhua Zhou, Shidong Liu, Rundong Li, Haiping Liu, Chaowei Zhou, Luo Lei
Gymnocypris eckloni (G. eckloni), a cold-water economic fish, is widely cultivated in southwestern China. The increase in extreme summer weather conditions owing to global warming can significantly affect their survival and health. The fish intestine and its microbiota are closely associated with fish feeding and growth, nutritional metabolism, and immune defense. However, the mechanisms underlying
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Abundance, production, and migrations of nesting green turtles at Rose Atoll, American Samoa, a regionally important rookery in the Central South Pacific Ocean Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-17 Shawn K. Murakawa, Alexander R. Gaos, Devin S. Johnson, Brian Peck, Mark MacDonald, Elyse Sachs, Frank Pendleton, Camryn D. Allen, Marylou K. Staman, Shelbie Ishimaru, Kyle S. Van Houtan, Alphina Liusamoa, T. Todd Jones, Summer L. Martin
Sea turtles are a taxon of conservation concern and are highly migratory, exposing them to a variety of threats (e.g., fisheries bycatch, direct harvest) across their lifetime. Understanding the abundance of nesting females, hatchling production, and migratory movements - three of the most basic biological data needs for this species group - is imperative for population assessment. This study summarizes
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Biological and fishery indicators for the small-scale marble crab fishery in Northern Patagonia: recommendations for improving a monitoring program and stock assessment of a data-limited fishery Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-17 Madeleine Hamamé, Gustavo Aedo, Paula Ortiz, Andrés Olguín, Luis Miguel Pardo
Small-scale fisheries have been typically data-limited despite their economic importance for local communities. This is especially true in zones where fishing operations occur in remote areas under harsh weather conditions. Crab fishery in Chile is exclusively artisanal, and marble crab (Metacarcinus edwardsii) has the highest landing records. This species is found in most parts of the coast of Chile
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Biogeographic variation in environmental and biotic resistance modifies predicted risk of marine invasions by ships Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-17 Mariana Bonfim, Samuel L. Bunson, Andrew J. Sellers, Mark E. Torchin, Gregory M. Ruiz, Amy L. Freestone
IntroductionGlobal shipping has accelerated the spread of non-native species. Factors such as environmental filtering and interactions with local biota can affect invasion likelihood, yet their relative contribution to predicting invasion risk remains unresolved. To test how abiotic filters and an experimentally-derived measure of biotic resistance interact with propagule pressure, we developed an
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A taste of youth: Seasonal changes in the diet of immature white sharks in eastern Australia Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-16 Rebecca S. Lipscombe, Lauren Meyer, Peter Butcherine, Stephen Morris, Charlie Huveneers, Anna Scott, Paul A. Butcher
White sharks (Carcharodon carcharias) play a crucial ecological role, shaping ecosystems through direct predation and risk effects. On the east coast of Australia, immature white sharks are broadly distributed, inhabiting a wide range of habitats and ecosystems from temperate Tasmania to tropical North Queensland. Using stable isotopes and fatty acids of muscle and plasma, we examined the diet and
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Provincial marine carbon sink transfer in China: structural drivers and key consumption pathways Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-16 Yan Li, Cunfen Deng, Peng Jiang, Yigang Wei, Ke Wang
The ocean is the largest carbon sink on Earth and an important pathway to China achieving carbon neutrality. From a consumption perspective, studying the capacity of marine carbon sink in each of China’s provinces and its inter-regional transfer is of great significance in harnessing the increase in ocean carbon sink driven by final demand. This article first calculates the production-side carbon sink
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Niche differentiation in microorganisms capable of using alternative reduced nitrogen sources studied across depth and between oxic and anoxic ocean regions Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-16 Paulina Huanca-Valenzuela, Jacob A. Cram, Clara A. Fuchsman
IntroductionAssimilation of reduced nitrogen is less energetically costly than assimilation of oxidized forms. In the open ocean, ammonium is generally absent from the water column, including in oxygen-deficient zones (ODZs). Some microorganisms can use alternative organic reduced nitrogen forms like urea and cyanate, as indicated by the presence of cyanase (cynS) and urease (ureC) genes.MethodsHere
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Distribution of species in deep-sea biogeographic provinces and molecular phylogeny for the superfamily Neotanaoidea (Peracarida; Tanaidacea) indicate high levels of connectivity Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-16 Emma Palacios Theil, Magdalena Błażewicz
Here we analyze available recorded occurrences for species of Neotanaoidea, a deep-sea peracarid superfamily, in the frame of biogeographic bathyal, abyssal, and hadal provinces. In addition, we provide the first phylogeny based on molecular data for this group. Despite the existence of large knowledge gaps, the observed patterns reveal levels of connectivity across biogeographic provinces, oceans
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Short-term time-series observations of phytoplankton light-absorption and productivity in Prydz Bay, coastal Antarctica Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-15 Sarat C. Tripathy, Anvita U. Kerkar, P. Sabu, Sunil K. Padhi, Sudarsana R. Pandi, Amit Sarkar, Bhaskar V. Parli, Rahul Mohan
The optical characteristics of coastal Antarctic waters exhibit complexity due to the dynamic hydrography influenced by meltwater intrusion, which alters nutrient levels, thermohaline structure, and optically active substances (OAS) regimes. Studies on bio-optical variability and its implications on phytoplankton productivity (PP) are scanty in coastal polar regions. On this backdrop, time-series measurements
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The therapeutic potential and application of marine alkaloids in treating breast cancer Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-15 Jing Yu, Xinmin Wang, Peixin Du, Hubing Shi
Breast cancer is a major threat to women’s health worldwide. Although the 5-year survival rate is relatively high, treating recurrent and metastatic breast cancer remains challenging. Existing anticancer drugs are often accompanied by adverse reactions; thus, there is an urgent need to explore safer and more effective treatment options. Marine natural compounds, especially alkaloids, are considered
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Applications of deep learning in physical oceanography: a comprehensive review Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-15 Qianlong Zhao, Shiqiu Peng, Jingzhen Wang, Shaotian Li, Zhengyu Hou, Guoqiang Zhong
Deep learning, a data-driven technology, has attracted widespread attention from various disciplines due to the rapid advancements in the Internet of Things (IoT) big data, machine learning algorithms and computational hardware in recent years. It proves to achieve comparable or even more accurate results than traditional methods in a more flexible manner in existing applications in various fields
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Deep underwater image compression for enhanced machine vision applications Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-15 Hanshu Zhang, Suzhen Fan, Shuo Zou, Zhibin Yu, Bing Zheng
Underwater image compression is fundamental in underwater visual applications. The storage resources of autonomous underwater vehicles (AUVs) and underwater cameras are limited. By employing effective image compression methods, it is possible to optimize the resource utilization of these devices, thereby extending the operational time underwater. Current image compression methods neglect the unique
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Capture and killing of small cetaceans in the Faroe Islands is inhumane and offers little scope for improvement Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-15 Alick Simmons
The capture and killing of free-living small cetaceans in the Faroe Islands is described. After being driven on-shore by motor vessels, the animals are killed without pre-stunning using officially-prescribed methods that involve severing the spinal cord and the associated blood vessels using a long-handled lance. The claim that this induces near instantaneous unconsciousness and death lacks supporting
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Beyond equilibrium thinking: dynamic area-based management tools in a changing ocean Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-15 Bastiaan E. Klerk, Katharina Heinrich, Raul Primicerio
Area-based management tools (ABMTs), including marine protected areas (MPAs) are often static and fail to reflect the dynamic realities of marine ecosystems. Marine ecosystems are characterized by their embodiment of constant change, which is further amplified by anthropogenic stressors, particularly climate change. ABMTs and MPAs are, however, premised on an implicit assumption of environmental equilibrium
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Applications of Finite-Time Lyapunov Exponent in detecting Lagrangian Coherent Structures for coastal ocean processes: a review Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-15 Yue Peng, Xin Xu, Qi Shao, Haiyong Weng, Haibo Niu, Zhiyu Li, Chen Zhang, Pu Li, Xiaomei Zhong, Jie Yang
Addressing the threats of climate change, pollution, and overfishing to marine ecosystems necessitates a deeper understanding of coastal and oceanic fluid dynamics. Within this context, Lagrangian Coherent Structures (LCS) emerge as essential tools for elucidating the complexities of marine fluid dynamics. Methods used to detect LCS include geometric, probabilistic, cluster-based and braid-based approaches
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Reduced seagrass resilience due to environmental and anthropogenic effects may lead to future die-off events in Florida Bay Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-15 Jimmy de Fouw, Christopher J. Madden, Bradley T. Furman, Margaret O. Hall, Yvon Verstijnen, Sander Holthuijsen, Thomas A. Frankovich, Theresa Strazisar, Michelle Blaha, Tjisse Van Der Heide
Coastal systems often depend on foundation species such as seagrasses that are supported by self-facilitation. Seagrass meadows, however, are threatened worldwide due to climate change and local human impact, disrupting self-facilitation leading to system instability. Florida Bay is a large seagrass dominated coastal ecosystem that suffered from multiple seagrass mortality events over the last half
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Using passive acoustics to identify a quiet winter foraging refuge for an endangered beluga whale population in Alaska Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-15 Manuel Castellote, Verena A. Gill, Christopher D. Garner, Andrea J Gilstad, Benjamin X. Hou, Arial M. Brewer, Jessica M. Knoth
Cook Inlet beluga (CIB), Delphinapterus leucas, have not recovered from subsistence overharvest despite conservation efforts initiated in 2000. Reasons for this lack of recovery are still unclear with anthropogenic noise identified as a high threat in this population’s recovery plan. Baseline information on CIB habitat use and soundscape characterization is crucial in evaluating impacts from anthropogenic
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Coral spawning patterns on the Luhuitou fringing reef in Hainan Island of the northern South China Sea Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-15 Youfang Sun, Yuyang Zhang, Lei Jiang, Xiaolei Yu, Lintao Huang, Tao Yuan, Jianhui Yang, Jiansheng Lian, Chengyue Liu, Put Ang, Hui Huang
Observation of coral spawning times is valuable to detect spawning patterns and identify the potential mechanisms behind coral reproduction. Although large amount of data on global coral spawning records have become available over the past decades, information on coral spawning in the northern South China Sea remains scarce. In this study, we investigated the spawning patterns of scleractinian corals
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Frontiers | Efficacy of calcein as a chemical marker of Potamocorbula laevis Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-12 Jin Gao, Xi Xie, Xiang-Feng Liu, Yong-An Bai, Miao Yang, Wei-Ming Teng, Hai-Jiao Liu, Qing-Zhi Wang
IntroductionCalcein was used to develop a shell marking method for Potamocorbula laevis.MethodsThe suitable conditions for marking were investigated, including marking concentration, immersion time, and water temperature. The impacts and feasibility of the marking method were assessed based on the survival rate of P. laevis, the success rate of fluorescence marking, marking quality, and alterations
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Surface latent and sensible heat fluxes over the Pacific Sub-Arctic Ocean from saildrone observations and three global reanalysis products Front. Marine Sci. (IF 2.8) Pub Date : 2024-07-12 Subhatra Sivam, Chidong Zhang, Dongxiao Zhang, Lisan Yu, Isabella Dressel
Sea surface latent and sensible heat fluxes are crucial components of the air-sea energy exchanges that influence the upper-ocean heat content and the marine atmospheric boundary layer. Due to the limited availability of in situ observations, assessing their impact on Arctic weather and climate has mainly been done using data assimilation products and numerical model simulations. The accuracy of the