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Hybrid quantum-classical convolutional neural network for phytoplankton classification Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-26 Shangshang Shi, Zhimin Wang, Ruimin Shang, Yanan Li, Jiaxin Li, Guoqiang Zhong, Yongjian Gu
The taxonomic composition and abundance of phytoplankton have a direct impact on marine ecosystem dynamics and global environment change. Phytoplankton classification is crucial for phytoplankton analysis, but it is challenging due to their large quantity and small size. Machine learning is the primary method for automatically performing phytoplankton image classification. As large-scale research on
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From the modeling of diadromous species’ marine distributions to the characterization of their current and future marine habitats Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-26 Clara Navarro, Anais Janc, Géraldine Lassalle, Patrick Lambert, Chloé Dambrine
IntroductionMany diadromous fish species are currently facing the threat of generalized population extirpations across their range, and conservation efforts implemented primarily within the continental domain may not be sufficient to ensure their viability. In consequence, better understanding the use of the marine environment by these species turned out to be critical.Material and methodWe developed
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Bridging soil biogeochemistry and microbial communities (archaea and bacteria) in tropical seagrass meadows Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-26 Gabriel Nuto Nóbrega, Pedro Avelino Maia de Andrade, Hermano Melo Queiroz, Arthur Prudêncio de Araújo Pereira, Margareth da Silva Copertino, Daniel Gorman, Wen Zhuang, Jinming Song, Fernando Dini Andreote, Xosé Luis Otero, Tiago Osório Ferreira
IntroductionSeagrass meadows are among the most valuable ecosystems, providing numerous ecosystem services and functions. Despite its importance, there is a lack of knowledge about soil’s biogeochemical process variability, which can control microbiological communities. Thus, this study aimed to evaluate whether seagrass meadows in different geo-environments exhibit varying Fe and sulfate reduction
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Impacts of coral bleaching on reef fish abundance, biomass and assemblage structure at remote Aldabra Atoll, Seychelles: insights from two survey methods Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-26 Anna Koester, Cesc Gordó−Vilaseca, Nancy Bunbury, Sebastian C. A. Ferse, Amanda Ford, Philip Haupt, Luke A’Bear, Maria Bielsa, April Jasmine Burt, Jake Letori, Emma Mederic, Ella Nancy, Cheryl Sanchez, Matt Waller, Christian Wild
IntroductionCoral bleaching immediately impacts the reef benthos, but effects on fish communities are less well understood because they are often delayed and confounded by anthropogenic interactions.MethodsWe assessed changes in fish abundance, biomass and community composition before and after the 2015/16 coral bleaching event at Aldabra Atoll, Seychelles, where local human impacts are minimal, but
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Assessment of the current status and effectiveness of area-based conservation measures banning trawling activities in the Adriatic Sea Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-26 Carmen Ferrà, Giuseppe Scarcella
The marine environment is highly stressed by anthropogenic pressures, among which fisheries, and in particular bottom trawling, are one of the main sources of impact. Area-based conservation measures can help conserve and restore ecosystems and population structures and therefore constitute a key tool to the achievement of the 14th Sustainable Development Goal, preservation of the ocean. The purpose
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Suspended particulates at the Point Loma, California wastewater outfall Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-22 M. Dale Stokes, James J. Leichter, David Nadeau
A recent study conducted at the Point Loma wastewater outfall in San Diego used a novel sampling technique, the Pelagic Laser Tomographer (PLT), in combination with traditional water column profiling instruments to analyze suspended particulate distributions and effluent plume dynamics. Coastal wastewater discharges create buoyant plumes that interact with the surrounding water, and the tracking and
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A novel subsurface sediment plate method for quantifying sediment accumulation and erosion in seagrass meadows Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-22 Carolyn J. Ewers Lewis, Karen J. McGlathery
Sediment dynamics in seagrass meadows are key determinants of carbon sequestration and storage, surface elevation, and resilience and recovery from disturbance. However, current methods for measuring sediment accumulation are limited. For example, 210Pb dating, the most popular tool for quantifying sediment accretion rates over decadal timescales, relies on assumptions often at odds with seagrass meadows
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Toward efficient deep learning system for in-situ plankton image recognition Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-22 Junbai Yue, Zhenshuai Chen, Yupu Long, Kaichang Cheng, Hongsheng Bi, Xuemin Cheng
Plankton is critical for the structure and function of marine ecosystems. In the past three decades, various underwater imaging systems have been developed to collect in-situ plankton images and image processing has been a major bottleneck that hinders the deployment of plankton imaging systems. In recent years, deep learning methods have greatly enhanced our ability of processing in-situ plankton
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Methods to get more information from sparse vessel monitoring systems data Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-22 Hans D. Gerritsen
Vessel Monitoring Systems (VMS) and other vessel tracking data have been used for many years to map the distribution of fishing activities. Mapping areas with low levels of fishing activity can be of particular interest; for example to avoid conflicts between fishing and other ocean uses like offshore renewable energy or to protect relatively pristine ecosystems from increasing fishing pressure. A
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Impact of connected conduit on pumping-induced seawater intrusion in a coastal karst aquifer Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-21 Xiujie Wu, Zhongyuan Xu, Zexuan Xu, Bill X. Hu
IntroductionCoastal karst aquifers face the risk of seawater intrusion due to groundwater development. Based on the conceptualization of Woodville Karst Plain (WKP), this study investigates the effect of karst conduit and pumping conditions on the aquifer vulnerability and pumping security.MethodsAccording to the purposes of this study, two cases are considered: one with conduit and one without. Salinization
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MSGNet: multi-source guidance network for fish segmentation in underwater videos Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-21 Peng Zhang, Hong Yu, Haiqing Li, Xin Zhang, Sixue Wei, Wan Tu, Zongyi Yang, Junfeng Wu, Yuanshan Lin
Fish segmentation in underwater videos provides basic data for fish measurements, which is vital information that supports fish habitat monitoring and fishery resources survey. However, because of water turbidity and insufficient lighting, fish segmentation in underwater videos has low accuracy and poor robustness. Most previous work has utilized static fish appearance information while ignoring fish
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Perceptions and attitudes of residents toward small-scale longline tuna fishing in the Galapagos Marine Reserve: conservation and management implications Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-21 Mauricio Castrejón, Omar Defeo
Longlining represents a cost-effective fishing modality for catching tuna, but its use is contentious due to the unintended catch of endangered, threatened, and protected (ETP) species. In 2000, longlining was banned in the Galapagos Marine Reserve, Ecuador. Since then, local small-scale fishers have contested this decision. In contrast, longlining ban supporters argue that this regulation is fundamental
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Molecular characterization, spatiotemporal expression patterns of fatty acid elongase (elovl8) gene, and its transcription changes in response to different diet stimuli in yellow catfish (Pelteobagrus fulvidraco) Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-21 Wan-Hong Zeng, Xiu-Ying Wei, Wei Qin, Chuan-Jie Qin, Qiong Shi, Sheng-Tao Guo, Panita Prathomya, Shi-Yong Zhang, Peng Fu, Wei Hu, Han-Wen Yuan, Zheng-Yong Wen
Elongase of very long-chain fatty acid 8 (Elovl8) is a new member identified in the Elovl family that is involved in the synthesis of highly unsaturated fatty acids (HUFAs). However, the evolutionary and physiological roles of this enzyme are still largely unknown. In the present study, the elovl8 gene was identified and characterized from yellow catfish Pelteobagrus fulvidraco, and then its evolutionary
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Using Photo-ID to document and monitor the prevalence of fibropapilloma tumours in a foraging aggregation of green turtles Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-21 Joana M. Hancock, Jenni Choma, Leah Mainye, Paul Wambi, Martin R. Stelfox, Maximilian M. R. Polyak, Sammy Wambua, Stephanie Köhnk
Sea turtle in-water monitoring has been conducted in Diani-Chale National Marine Reserve (DCMR) in Kenya’s South Coast since 2018, where green sea turtles (Chelonia mydas) may be found resting or foraging. Underwater surveys are conducted at a regular basis to collect data on sea turtle occurrence, abundance, and distribution, incorporating photographic identification (Photo-ID) as a capture-mark-recapture
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A SST-constructed Ocean Heat Content index in crossing ENSO spring persistence barrier Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-21 Xing Meng, Hui Chen, Li Zhang, Yishuai Jin, Lixin Wu
The El Niño-Southern Oscillation (ENSO) spring persistence barrier (SPB) describes the feature in which the predictive skills of ENSO decrease significantly in the boreal spring. This paper investigates an index constructed using sea surface temperature (SST), namely SSTH, which is based on tropical Pacific Ocean Heat Content (OHC) in crossing ENSO SPB. Inspired by the dynamical relationship between
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Performance of European oysters (Ostrea edulis L.) in the Dutch North Sea, across five restoration pilots Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-21 Oscar G. Bos, Stephanie Duarte-Pedrosa, Karin Didderen, Joost H. Bergsma, Sonia Heye, Pauline Kamermans
IntroductionThe European flat oyster (Ostrea edulis) is a biogenic reef former, internationally recognised as threatened and declining in the NE Atlantic by OSPAR and one of the focal species in nature inclusive designs in offshore windfarms in The Netherlands. Oyster reefs offer habitat to many other benthic hard substrate and fish species and provide ecosystem functions such as shelter and feeding
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Climate change with increasing seawater temperature will challenge the health of farmed Atlantic Cod (Gadus morhua L.) Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-21 Elisabeth Ytteborg, Lynne Falconer, Aleksei Krasnov, Lill-Heidi Johansen, Gerrit Timmerhaus, Gunhild Seljehaug Johansson, Sergey Afanasyev, Vibeke Høst, Solfrid Sætre Hjøllo, Øyvind J. Hansen, Carlo C. Lazado
Aquaculture is one of the fastest growing food production sectors in the world and further expansion is expected throughout the 21st century. However, climate change is threatening the development of the sector and action is needed to prepare the industry for the coming challenges. Using downscaled temperature projections based on the Intergovernmental Panel on Climate Change (IPCC) climate projection
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Microbiome-assisted restoration of degraded marine habitats: a new nature-based solution? Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-21 Cinzia Corinaldesi, Silvia Bianchelli, Marco Candela, Antonio Dell’Anno, Cristina Gambi, Eugenio Rastelli, Stefano Varrella, Roberto Danovaro
Microorganisms interact with all biological components in a variety of ways. They contribute to increase the efficiency of marine food webs and facilitate the adaptation of multicellular organisms to climate change and other human-induced impacts. Increasing evidence suggests that microbiomes are essential for the health of marine species, for maintaining productive marine ecosystems, and thus for
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Effects of marine seismic surveys on free-ranging fauna: a systematic literature review Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-21 Alice Affatati, Angelo Camerlenghi
Among anthropogenic activities, marine seismic surveys are a fundamental tool for oil and gas explorations, geophysical research, environmental hazard, and risk analysis. This resulting noise may affect a range of species, eliciting masking, behavioral responses, and changes in acoustic repertoires. There is an urgency to understand in depth the potential effects of seismic surveys on marine ecosystems
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Effects of climate change and variability on large pelagic fish in the Northwest Atlantic Ocean: implications for improving climate resilient management for pelagic longline fisheries Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-21 Andrea Dell’Apa, Robert Boenish, Rod Fujita, Kristin Kleisner
Climate change influences marine environmental conditions and is projected to increase future environmental variability. In the North Atlantic, such changes will affect the behavior and spatiotemporal distributions of large pelagic fish species (i.e., tunas, billfishes, and sharks). Generally, studies on these species have focused on specific climate-induced changes in abiotic factors separately (e
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Geographic variation in population structure and grazing features of Calanus glacialis/marshallae in the Pacific Arctic Ocean Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-21 Minami Ishihara, Kohei Matsuno, Koki Tokuhiro, Yasuhiro Ando, Kazutoshi Sato, Atsushi Yamaguchi
Calanus glacialis/marshallae is a dominant zooplankton species in the Pacific Arctic Ocean that is widely distributed in shelf areas, and it plays a vital role in connecting primary production to higher trophic levels. Its phenology is well adapted to hydrography, but there is little available information about regional and diel changes in population structure and grazing features. In this study, we
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Wild salmon enumeration and monitoring using deep learning empowered detection and tracking Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-21 William I. Atlas, Sami Ma, Yi Ching Chou, Katrina Connors, Daniel Scurfield, Brandon Nam, Xiaoqiang Ma, Mark Cleveland, Janvier Doire, Jonathan W. Moore, Ryan Shea, Jiangchuan Liu
Pacific salmon have experienced declining abundance and unpredictable returns, yet remain vital to livelihoods, food security, and cultures of coastal communities around the Pacific Rim, creating a need for reliable and timely monitoring to inform sustainable fishery management. Currently, spawning salmon abundance is often monitored with in-river video or sonar cameras. However, reviewing video for
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Reconstruction of subsurface ocean state variables using Convolutional Neural Networks with combined satellite and in situ data Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-21 Philip A. H. Smith, Kristian Aa. Sørensen, Bruno Buongiorno Nardelli, Anshul Chauhan, Asbjørn Christensen, Michael St. John, Filipe Rodrigues, Patrizio Mariani
Subsurface ocean measurements are extremely sparse and irregularly distributed, narrowing our ability to describe deep ocean processes and thus also limiting our understanding of the role of ocean and marine ecosystems in the Earth system. To overcome these observational limitations, neural networks combining remotely-sensed surface measurements and in situ vertical profiles are increasingly being
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Intermittent shading can moderate coral bleaching on shallow reefs Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-21 Peter Butcherine, Alejandro Tagliafico, Sophia L. Ellis, Brendan P. Kelaher, Conor Hendrickson, Daniel Harrison
The health of coral reefs is declining from the effects of human activity and climate change. Mass coral bleaching is often triggered by elevated water temperature and excessive solar irradiance. Shading can reduce coral bleaching risk. Shading-based management interventions, such as whole-of-reef marine fogging, have been proposed as a conservation tool for periods when coral undergoes excessive thermal
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Extreme marine heatwaves and cold-spells events in the Southern North Sea: classifications, patterns, and trends Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-20 Bayoumy Mohamed, Alexander Barth, Aida Alvera-Azcárate
In this study, we examined the long-term spatiotemporal trend of marine heatwaves (MHW) and marine cold spells (MCS) characteristics in the southern North Sea over the last four decades (1982-2021). We then estimated the difference between their annual mean values and the possible relationship with the large-scale climate modes of natural sea surface temperature (SST) and atmospheric variability using
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Influence of atmospheric dust deposition on sinking particle flux in the northwest Pacific Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-20 Hyung Jeek Kim, Dongseon Kim, Young-Gyu Park, Jong-Yeon Park, Ki-Young Choi, Joon Sang Park, Sung Min An, Kyungman Kwon, Jae Hoon Noh, Jeomshik Hwang
We examined the flux and composition of sinking particles collected at a water depth of 800 m in the northwest Pacific from November 2017 to August 2018 to assess the impact of dust deposition on organic carbon export. The fluxes of total particulate matter and particulate organic carbon averaged over the study period were 88 ± 63 mg m-2 d-1 and 9.0 ± 5.8 mg m−2 d−1, respectively. Biogenic particles
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Monsoon-driven seasonal hypoxia along the northern coast of Oman Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-20 Steven F. DiMarco, Zhankun Wang, Piers Chapman, Lubna al-Kharusi, Leila Belabbassi, Hilal al-Shaqsi, Marion Stoessel, Stephanie Ingle, Ann E. Jochens, Matthew K. Howard
Dissolved oxygen and current observations from a cabled ocean observatory in the Sea of Oman show that the annual recurrence of coastal hypoxia, defined as dissolved oxygen concentrations ≤63 μM, is associated with the seasonal cycle of local monsoon winds. The observations represent the first long-term (5+ years) continuous moored observations off the northern Omani coast. During the summer/fall southwest
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Probiotics mitigate thermal stress- and pathogen-driven impacts on coral skeleton Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-20 Mahdi Moradi, Phillipe R. Magalhaes, Raquel S. Peixoto, Cassia C.A.C. Jonck, Daniel François, Anna Clara F. Bellot, Jonatã B. Teixeira, Carla S. Silveira, Gustavo Duarte, Heitor Evangelista, Catia F. Barbosa
Threats leading to a reduction in coral populations are apparent worldwide. Several different approaches have been tested to accelerate the adaptation of corals to a changing climate. Here, we evaluated the skeleton structure, crystal habit, and chemical changes of the coral Pocillopora damicornis in response to the pathogen (Vibrio coralliilyticus) and probiotic (Beneficial Microorganisms for Corals
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Alien species established in the Bay of Biscay suggest significant contribution of both fouling and dry ship compartments Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-20 Deva Menéndez-Teleña, Veronica Soto-López, Marlene Bartolomé, Monica González Arenales, Horacio J. Montes, Alba Ardura, Eva Garcia-Vazquez
IntroductionThe majority of studies on marine biosecurity focus on aquatic species, but invaders can also use dry ship compartments for dispersal; this pathway has been less explored than fouling or ballast water. Here we analysed the maritime traffic of the international Port of Gijon (south Bay of Biscay, Spain) as a case study.MethodsMain donor countries were identified from traffic data. From the
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Marine litter-fauna interactions: a standardised reporting framework and critical review of the current state of research with a focus on submarine canyons Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-20 Alice Lauren Bruemmer, Awantha Dissanayake, Jaime Selina Davies
Litter is ubiquitous in the ocean, interacting with fauna and causing impacts that are unquantified at present. Mainly sourced from land, marine litter is very persistent, and undergoes slow degradation upon settling on the ocean floor. Submarine canyons contain more litter than other oceanographic features due to hydrological processes, but study of litter in canyons is made difficult by logistical
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Spatiotemporal variability in ocean-driven basal melting of cold-water cavity ice shelf in Terra Nova Bay, East Antarctica: roles of tide and cavity geometry Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-19 Taekyun Kim, Ji-Seok Hong, Emilia Kyung Jin, Jae-Hong Moon, Sang-Keun Song, Won Sang Lee
Mass loss from ice shelves occurs through ocean-driven melting regulated by dynamic and thermodynamic processes in sub-ice shelf cavities. However, the understanding of these oceanic processes is quite limited because of the scant observations under ice shelves. Here, a regional coupled sea-ice/ocean model that includes physical interactions between the ocean and the ice shelf is used as an alternative
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Oyster reef restoration - aquaculture interactions: maximizing positive synergies Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-19 Melanie J. Bishop, Brendan S. Lanham, Juan R. Esquivel-Muelbert, Victoria J. Cole, Kristine M. Faelnar, Charlotte Jenkins, Jillian Keating, Francisco Martínez-Baena, Wayne A. O’Connor
Globally, oyster reef restoration is on the rise. In many instances, restoration is occurring alongside established oyster aquaculture industries that grew to prominence following oyster reef demise. This paper examines the potential positive and negative interactions between the two industries and identifies key factors that may promote positive interactions. Interactions between the two industries
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Nonlinear seismic response analysis of layered seabed considering seawater-seabed coupling effects Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-19 Hong-Fei Fan, Yan-Zhen Wang, Guo-Xing Chen, Wei-Yun Chen, Kai Zhao, Sheng-Dong Zhu
Earthquake in the sea area is an important factor affecting the safety of marine engineering construction, seabed site seismic response analysis is an important preliminary work for marine engineering construction. Based on a fluid-solid weak coupling model which could simulate seawater-seabed interaction, four typical borehole sections along the proposed tunnel at Qiongzhou strait are selected to
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Reconstruction of daily chlorophyll-a concentrations in the transit of severe tropical cyclone Hudhud using the ExDINEOF method Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-19 Zheng Wang, Shike Qiu, Qun Zeng, Peijun Du, Xiaoyan Dang, Jiping Liu, Jun Du
Tropical regions experience a diverse range of dense clouds, posing challenges for the daily reconstruction of chlorophyll-a concentration data. This underscores the pressing need for a practical method to reconstruct daily-scale chlorophyll-a concentrations in such regions. While traditional data reconstruction methods focus on single variables and rely on specific factors to infer missing data at
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Large-scale seabird community structure along oceanographic gradients in the Scotia Sea and northern Antarctic Peninsula Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-19 Victoria Marja Sofia Ollus, Martin Biuw, Andrew Lowther, Per Fauchald, John Elling Deehr Johannessen, Lucía Martina Martín López, Kalliopi C. Gkikopoulou, W. Chris Oosthuizen, Ulf Lindstrøm
IntroductionThe Scotia Sea and Antarctic Peninsula are warming rapidly and changes in species distribution are expected. In predicting habitat shifts and considering appropriate management strategies for marine predators, a community-level understanding of how these predators are distributed is desirable. Acquiring such data, particularly in remote areas, is often problematic given the cost associated
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Isotopic niches of juvenile and adult green turtles (Chelonia mydas) in feeding and nesting areas in Brazil, southwestern Atlantic Ocean Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-19 Amanda Fernandes, Leandro Bugoni, Adalto Bianchini, Cleverson Zapelini, Alexandre Schiavetti
Stable isotope analysis is an approach that allows inferring feeding ecology and trophic structure of populations, especially for species that are difficult to observe in natural habitats, such as marine turtles. This study investigated the niche breadth of adult and juvenile green sea turtles (Chelonia mydas) through δ15N and δ13C values in carapace scutes. During 2017 and 2018, tissues were collected
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Further evidence of humpback whale presence in deep tropical ocean during the breeding season: confirmation and extension of acoustic detections between Hawaii and Mexico Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-19 James D. Darling, Beth Goodwin
During winter humpback whales converge on tropical breeding grounds characterized by shallow, warm seas. In the eastern half of the North Pacific two such breeding grounds are located along the shorelines and shallows of Mexico, and in mid-ocean around Hawaii, separated by 4,500-6,000 km of deep ocean basin. A 2018 acoustic survey by an autonomous Wave Glider from Hawaii eastward towards Mexico, at
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Tracer particle motion driven by vortex formation in the bottom boundary layer underneath internal solitary waves Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-19 Thea Josefine Ellevold, John Grue, Joakim Soløy Sletten
Internal solitary waves (ISWs) of large amplitude moving in the coastal ocean induce sizeable horizontal velocities above the sea bed. In turn, these give rise to instability and vortex formation in the bottom boundary layer (BBL), and sediment resuspension and concentration maintenance in the water column. We present two-dimensional laminar simulations in a numerical tank suitable for internal wave
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Propidium Monoazide based selective iDNA monitoring method improves eDNA monitoring for harmful algal bloom Alexandrium species Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-18 Kun-Woo Yun, Hwa-Seong Son, Min-Jun Seong, Mu-Chan Kim
eDNA, also known as environmental DNA, has garnered significant attention due to its potential applications in various fields such as biodiversity assessment, species distribution monitoring, ecological interaction analysis, and quantitative analysis. However, the presence of non-selective DNA signals in eDNA samples poses challenges in accurately detecting species, assessing biodiversity, and conducting
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From coastal geomorphometry to virtual environments Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-18 Felix Gross, Lennart Petersen, Carolin Wallmeier, Rachel Barrett, Tom Kwasnitschka, Svenja Karstens
Communicating environmental change and mitigation scenarios to stakeholders and decision-makers can be challenging. Immersive environments offer an innovative approach for knowledge transfer, allowing science-based scenarios to be discussed interactively. The use of such environments is particularly helpful for the analysis of large, multi-component geospatial datasets, as commonly employed in the
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Distribution of siphonophores in the Northwest Pacific Ocean and links to environmental conditions Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-18 Nayeon Park, Hyuntae Choi, Kyung-Hoon Shin, Wonchoel Lee
Despite their abundance in marine ecosystems, studies on siphonophores are limited. In this study, 26 species of siphonophores in the Northwest Pacific Ocean were identified during multiple cruises of the R/V ISABU from 2018–2020, and various factors that may affect the occurrence of siphonophores, including water temperature, salinity, zooplankton biomass, and trophic niche were investigated. Statistical
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High-resolution study of the air-sea CO2 flux and net community oxygen production in the Ligurian Sea by a fleet of gliders Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-18 Laurent Coppola, Marine Fourrier, Orens Pasqueron de Fommervault, Antoine Poteau, Emilie Diamond Riquier, Laurent Béguery
Intense glider monitoring was conducted in the Ligurian Sea for five months to capture the Net Community Production (NCP) variability in one of the most dynamic and productive regions of the Mediterranean Sea. Using the SeaExplorer glider technology, we were able to observe continuously from January to the end of May 2018 the physical and biogeochemical variables during the last period of intense convection
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Summer bottom oxygen depletion dynamics and the associated physical structure in the Bohai Sea Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-18 Jing Zhang, Wei Yang, Guisheng Song, Haiyan Zhang, Liang Zhao
Summertime oxygen depletion has been more and more frequently observed in the bottom water of the Bohai Sea in the last decade. Based on comprehensive hydrography and microstructure measurements in summer in the Bohai Sea, the physical structure and bottom dissolved oxygen (DO) dynamics were investigated. The study area is characterized by strong tidal currents and obvious horizontal temperature and
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Constraining the origin of sedimentary organic matter in the eastern Guangdong coast of China using δ13C and δ15N Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-18 Junwen Wu, Jisheng Chen, Cui Wang, Xiuli Yan, Xijie Yin, Qian Liu
The source apportionment of organic carbon is of great scientific significance for understanding the carbon sink pattern in the coastal ocean. The concentrations of total organic carbon (TOC) and total nitrogen (TN) and their isotopic compositions (δ13CTOC and δ15NTN) were determined in surface sediments and sediment cores (Y3 and Y5) collected in the eastern Guangdong coast (EGDC) during spring, summer
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Trophic guilds of marine predators in the California current large marine ecosystem Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-18 Joseph J. Bizzarro, John C. Field, Jarrod A. Santora, K. Alexandra Curtis, Brian K. Wells
Quantifying trophic relationships of marine species is fundamental to the construction and performance of ecosystem models, development of effective ecosystem-based fisheries management strategies, and support of trait-based approaches to ecological risk assessment. Accounting for food web dynamics in taxonomically diverse ecosystems, such as the California Current Large Marine Ecosystem (CCLME), is
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The benthic-pelagic coupling affects the surface water carbonate system above groundwater-charged coastal sediments Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-14 Beata Szymczycha, Michael Ernst Böttcher, Magdalena Diak, Katarzyna Koziorowska-Makuch, Karol Kuliński, Przemysław Makuch, Cátia Milene Ehlert von Ahn, Aleksandra Winogradow
Submarine groundwater discharge (SGD) can be a significant source of dissolved nutrients, inorganic and organic carbon, and trace metals in the ocean and therefore can be a driver for the benthic-pelagic coupling. However, the influence of hypoxic or anoxic SGD on the carbonate system of coastal seawater is still poorly understood. In the present study, the production of dissolved inorganic carbon
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Factors controlling the distribution of dissolved organic carbon and nitrogen in the coastal waters off Jeju Island Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-14 Young Kyoung Song, Jeonghyun Kim, Yong Hwa Oh, DongJoo Joung, Tae-Hoon Kim
The composition of dissolved organic matter (DOM) in the coastal waters off Jeju Island, Korea, originates from a complex mixture of organic sources. This study examined the dynamics and sources of dissolved organic carbon (DOC) and dissolved organic nitrogen (DON) in the coastal waters off Jeju Island. Seasonal variation in the DOC and DON concentrations was observed, with significantly higher levels
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Variability in thermal stress thresholds of corals across depths Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-14 Parviz Tavakoli-Kolour, Frederic Sinniger, Masaya Morita, Takashi Nakamura, Saki Harii
Mesophotic habitats are potential refugia for corals in the context of climate change. The seawater temperature in a mesophotic habitat is generally lower than in a shallow habitat. However, the susceptibility and threshold temperatures of mesophotic corals are not well understood. We compared 11 mesophotic and shallow species to understand their thermal stress thresholds using physiological parameters
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Ecological and environmental predictors of juvenile coral density across the central and western Pacific Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-13 Courtney S. Couch, Thomas A. Oliver, Kyle Dettloff, Brittany Huntington, Kisei R. Tanaka, Bernardo Vargas-Ángel
The persistence of Pacific coral reefs is threatened by large-scale mortality resulting from heat stress, storms, overfishing, disease, and land-based pollution. While reefs have demonstrated the ability to recover from these disturbances, recovery potential is highly variable; in part driven by the high spatial variability in the abundance of coral juveniles. However, our understanding of the patterns
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Effect of live-storage period and temperature on oxygen consumption rate in the cold-water sea cucumber Parastichopus tremulus Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-13 Anja M. Landes, Jan Sunde, Gyda Christophersen
Sea cucumbers are of great significance in marine ecosystems all over the world. The red sea cucumber Parastichopus tremulus is also considered commercially interesting but very little information is available on its ecology and physiology. This study aimed at investigating this North Atlantic species` oxygen demand in relation to live-storage period and temperature in an attempt to deliver some physiological
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Harassment and obstruction of observers in U.S. fisheries Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-13 Jessica L. Dobson, Matthew R. Kahley, Anna M. Birkenbach, Kimberly L. Oremus
Fishery observers play a crucial role in the management and conservation of fish stocks, but the treatment they receive aboard fishing vessels can affect their ability to perform their duties. Using law enforcement data from the Northeast and Alaska regions, home to the most important commercial fisheries in the United States, we explore the extent of observer harassment, assault, interference, and
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A study of the feeding characteristics of a small and medium-sized copepod species (Sinocalanus tenellus) using genetic analysis techniques: seasonal comparison of potential/eaten food sources focused on phytoplankton Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-13 Yeon-Ji Chae, Hye-Ji Oh, Ihn-Sil Kwak, Kwang-Hyeon Chang, Hyunbin Jo
In aquatic ecosystem, the food web structure based on composition and abundance of prey species influences the feeding characteristics of predators, resulting in changes to the structure and function of the entire food web. Zooplankton mainly feed on phytoplankton, but the method of analyzing the feed source through visual and microscopic identification of gut contents has limitations in applicable
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Feeding and water temperature modulate the potential activity of gut microbiota in greater amberjack juveniles (Seriola dumerili) Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-13 Carmen Navarro-Guillén, Eirik Degré Lorentsen, Erick Perera, Manuel Yúfera, Olav Vadstein
Gut microbial communities are highly dynamic and respond to factors such as diet and host metabolism. However, there is limited knowledge on changes in gut microbiota during the daily cycle. To investigate how interactions between feeding and water temperature affected the diurnal dynamics and activity of the microbiota, we analyzed the qualitative and quantitative composition in feces of the potentially
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Analysis of the evolution of the Yellow River Delta coastline and the response of the tidal current field Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-13 Lili Zhang, Hongyuan Shi, Hao Xing, Pingping Li, Pengcheng Ma
The coastline of the Yellow River Delta has undergone continual alterations due to both natural forces and human activity. Studying these changes is crucial for promoting economic growth and preserving the region’s ecological balance. Based on imagery captured by the Landsat5 and Landsat8 satellites, this study uses statistical data from the Digital Shoreline Analysis System (DSAS), including Net Shoreline
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Temporal dynamics of zooplankton community in an oyster farming area of the Yellow Sea in China via metabarcoding Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-13 Beibei Qian, Xiaojing Miao, Fei Xu
IntroductionThe coastal ecosystem is a hub of both marine organisms and human activities. It plays a crucial role in human food production and affects facilities through biofouling. Long-read amplicon sequencing provides more accurate species identification and demonstrates numerous advantages in community diversity studies, making it an effective tool for ecological monitoring.MethodsTo investigate
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Heatwaves hinder mussel invasion by weakening byssus production Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-13 Xin Xu, Ke Yang, Yong Liu, Yuewen Deng, Liqiang Zhao
Heatwaves and bioinvasion are among the most pressing ecological issues worldwide. The highly invasive South American mussels (Mytella strigata) can construct extremely dense byssal mats in intertidal habitats they invade, causing serious threats to local biodiversity and ecosystems. Yet, little is known about whether intensifying heatwaves might facilitate their invasions. Here, we investigated how
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A robust array geometry inversion method for a deep-towed multichannel seismic system with a complex seafloor Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-11 Jing Li, Yanliang Pei, Chenguang Liu, Liancheng Zhang, Xiaohu Luo, Kai Liu, Weilu Li
Deep-towed multichannel seismic exploration technology has better applicability and more development potential when utilized to invert the geoacoustic properties of deep-sea sediment. The accurate geometric inversion results of the receiving array are crucial for fine submarine sediment imaging and physical property parameter inversion based on deep-towed multichannel seismic data. Thus, this study
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Phytoplankton control by stocking of filter-feeding fish in a subtropical plateau reservoir, southwest China Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-11 Chaoshuo Zhang, Feng Mei, Bin Luo, Dongxu Zhang, Xinyu Cheng, Yongying Xiong, Jianghui Bao, Rui Duan, Hao Jiang, Erik Jeppesen, Ming Duan
Stocking of filter-feeding fish (mainly Hypophthalmichthys molitrix and Aristichthys nobilis) is a common method used in lakes and reservoirs in (sub)tropical China to control phytoplankton, but the results are ambiguous and lack long-term data to support. We analysed a decade (2010-2020) of monitoring data from a subtropical plateau reservoir, southwest China, to which filter-feeding fish were stocked
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Research on integrated coastal zone management from past to the future: a bibliometric analysis Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-11 Lu Jiang, Tang Yang, Xuyi Wang, Jing Yu, Jia Liu, Kuncheng Zhang
Integrated coastal zone management (ICZM) has been regarded as an effective tool for achieving sustainable development of coastal ecosystems and reducing potential human health risks, but questions remain regarding its research status and future directions. Therefore, a bibliometric analysis was conducted using screened 6151 publications collected from Web of Science Core Collection databases. An exponential
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Survey of epiphytic microalgae to evaluate risk of ciguatera fish poisoning across natural and artificial reefs in North Carolina Front. Marine Sci. (IF 3.7) Pub Date : 2023-09-11 Prisca Lim, Avery B. Paxton, J. Christopher Taylor, Nathan S. Hall
Epiphytic microalgae are important contributors to the carbon and nutrient cycles yet are often overlooked during ecological surveys. In reef habitats, epiphytes are often found living on host organisms, including seaweeds or corals, and can influence community composition of higher trophic level taxa. Hence, understanding how epiphytes respond to different reef substrate materials can help inform