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Seasonal patterns of phytoplankton photoacclimation in a dimictic oligotrophic lake over 5 yr: Implications for chlorophyll as an estimate of biomass Limnol. Oceanogr. (IF 4.5) Pub Date : 2024-03-16 Scott Girdner, Joshua Sprague
Chlorophyll a is commonly used as a surrogate for algal biomass in lakes and oceans even though phytoplankton can readily adjust intracellular chlorophyll concentration to changes in the environment through a cellular process termed photoacclimation. Marine studies have documented fluctuations in cellular chlorophyll to year‐round changes in light intensity and nutrients using the chlorophyll : carbon
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Characteristics and mechanism of winter marine heatwaves in the cold tongue region of the South China Sea Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-15 Linxi Meng, Yunwei Yan, Lei Zhang, Wen Xing, Yi Yu, Xiaogang Xing
Marine Heatwaves (MHWs) are persistent anomalous sea surface temperature warming events that can affect the marine ecological environment and ecosystems. Here, we study the winter MHWs in the cold tongue region of the South China Sea (SCS) from 1982 to 2022. Our results show that the winter MHWs in the cold tongue region have the strongest cumulative intensity in the SCS, exceeding 45°C·day/time. These
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Environmental drivers modelling the mangrove Kinorhyncha community along an urban-to-natural gradient in French Guiana (western Atlantic Ocean) Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-15 Diego Cepeda, Nuria Sánchez, Adriana Spedicato, Emma Michaud, Daniela Zeppilli
Meiofaunal communities are dominated by free-living nematodes and harpacticoid copepods. Most of the studies defining the environmental drivers that influence meiofauna focus on these profuse groups. The ‘rare’ meiofaunal organisms (densities <5%) are frequently overlooked, making it difficult to know which abiotic variables influence their populations, or their ecological role in the benthic ecosystems
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Programmable flow injection: a versatile technique for benchtop and autonomous analysis of phosphate and silicate in seawater Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-15 Marine Lebrec, Maxime M. Grand
High-resolution, autonomous monitoring of phosphate and silicate in the marine environment is essential to understand their complex dynamics and implications for the functioning of marine ecosystems. In the absence of dependable reagent-less sensors for these nutrients, leveraging established colorimetric techniques using miniaturized analyzers, such as programmable Flow Injection (pFI), offers the
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Unraveling the chemical identification and biological potential of the genus Asparagopsis: a comprehensive review Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-15 Kit-Leong Cheong, Guanghui Li, Min Wang, Yufeng Yang, Saiyi Zhong
The genus Asparagopsis has garnered escalating attention in the spheres of marine biology and biotechnology due to its diverse chemical composition and promising biological capabilities. This all-encompassing review is dedicated to conducting an exhaustive inquiry into the chemical identification and biological importance of Asparagopsis species. By meticulously dissecting the array of chemical compounds
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Utilizing residual networks for remote sensing estimation of total nitrogen concentration in Shandong offshore areas Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-15 Hongxia Zheng, Yulin Wu, Haifeng Han, Juan Wang, Shanwei Liu, Mingming Xu, Jianyong Cui, Muhammad Yasir
Nitrogen is one of the critical factors in water pollution and eutrophication, so applying the deep learning method in remote sensing inversion of nitrogen can provide basic information for environmental management. This paper proposes a two-step feature extraction method to solve the problem that the number of bands in water quality inversion is insufficient and the deep learning method cannot be
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Environmental, behavioral, and design-related factors affect accuracy and precision of beluga abundance estimates from aerial surveys Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-15 Véronique Lesage, Sara Wing, Alain F. Zuur, Jean-François Gosselin, M. Tim Tinker, Arnaud Mosnier, Anne P. St-Pierre, Robert Michaud, Dominique Berteaux
Abundance estimation of wildlife populations is frequently derived from systematic survey data. Accuracy and precision of estimates, however, depend on the number of replicate surveys, and on adjustments made for animals unavailable to (availability bias), or available but undetected (perception bias) by observers. This study offers a comprehensive analysis of the relative influence of methodological
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Fluorescently labeled prey surrogates in combination with fluorescence‐activated cell sorting successfully discriminate actively feeding mixotrophs in a lake water sample Limnol. Oceanogr. (IF 4.5) Pub Date : 2024-03-14 Javier Florenza, Anna‐Maria Divne, Stefan Bertilsson
Mixotrophic protists are capable of acting both as primary producers and primary consumers at the base of the aquatic food web, thus constituting key organisms in ecosystems where they are abundant. However, their identity, abundance, ecological dynamics, and biogeochemical impact in aquatic ecosystems remain understudied in comparison to classically demarcated autotrophs or heterotrophs. In this study
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Unraveling sources of cyanate in the marine environment: insights from cyanate distributions and production during the photochemical degradation of dissolved organic matter Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-14 Rui Wang, Jihua Liu, Yongle Xu, Li Liu, Kenneth Mopper
Cyanate is a nitrogen and energy source for diverse marine microorganisms, playing important roles in the nitrogen cycle. Despite the extensive research on cyanate utilization, the sources of this nitrogen compound remain largely enigmatic. To unravel the sources of cyanate, distributions and production of cyanate during photochemical degradation of natural dissolved organic matter (DOM) were investigated
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DF-ParPINN: parallel PINN based on velocity potential field division and single time slice focus Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-14 Jingjian Chen, Chunxin Yuan, Jiali Xu, Pengfei Bie, Zhiqiang Wei
Modified Benney-Luke equation (mBL equation) is a three-dimensional temporal-spatial equation with complex structures, that is a high-dimensional partial differential equation (PDE), it is also a new equation of the physical ocean field, and its solution is important for studying the internal wave-wave interaction of inclined seafloor. For conventional PDE solvers such as the pseudo-spectral method
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Submarine groundwater discharge and ocean acidification: Implications from China's coastal waters Mar. Pollut. Bull. (IF 5.8) Pub Date : 2024-03-13 Zhe Zhang, Lixin Yi, Yubin Hu, Nan Liu, Lu Ren
Ocean acidification (OA) is a global environmental concern, and submarine groundwater discharge (SGD) is a potentially process that enhances OA. This review summarizes the relationship between two types of constituents carried by SGD into China's seawater and OA. 1) Current research predominantly concentrates on constituent fluxes from SGD, neglecting its ecological impacts on carbon and nutrients
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Occurrence and distribution of phycotoxins in the Antarctic Ocean Mar. Pollut. Bull. (IF 5.8) Pub Date : 2024-03-13 Jiale Tang, Xiuping He, Junhui Chen, Wei Cao, Tongzhu Han, Qinzeng Xu, Chengjun Sun
Lipophilic phycotoxins (LPTs) and domoic acid (DA) in Antarctic seawater, as well as parts of the South Pacific and the Southern Indian Oceans were systematically investigated. DA and six LPTs, namely pectenotoxin-2 (PTX2), okadaic acid (OA), yessotoxin (YTX), homo-yessotoxin (h-YTX), 13-desmethyl spirolide C (SPX1), and gymnodimine (GYM), were detected. PTX2, as the dominant LPTs, was widely distributed
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Short-term buoyant microplastic transport patterns driven by wave evolution, breaking, and orbital motion in coast Mar. Pollut. Bull. (IF 5.8) Pub Date : 2024-03-13 Soyoung Kim, Dae-Hong Kim
Recently, there has been a notable rise in social and scientific interest regarding microplastic pollution in coasts where waves significantly influence flow patterns and material transport. This study explores typical short-term movement of buoyant microplastics driven by surf zone processes including wave transformation, breaking, and orbital motion. To track microplastics, Lagrangian Particle Tracking
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Controlling effects of terrestrial organic matter on metal contamination and toxicity risks in port sediments Mar. Pollut. Bull. (IF 5.8) Pub Date : 2024-03-13 Chih-Feng Chen, Yee Cheng Lim, Ming-Huang Wang, Frank Paolo Jay B. Albarico, Chieh-Wei Hsu, Chiu-Wen Chen, Cheng-Di Dong
The contents of metals, total carbon, total nitrogen (TN), total organic carbon (TOC), and stable isotope composition (δC and δN) of sediment organic matter (SOM) were investigated to explore the sources and spatial distribution of metals and SOM in the surface sediments (Kaohsiung Port, Taiwan). Results showed that TOC and metals in estuarine sediments are high, gradually decreasing toward the port
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Microplastic and mesoplastic pollution in surface waters and beaches of the Canary Islands: A review Mar. Pollut. Bull. (IF 5.8) Pub Date : 2024-03-13 Andrea García-Regalado, Alicia Herrera, Rodrigo Almeda
The Canary Archipelago is a group of volcanic islands located in the North Atlantic Ocean with high marine biodiversity. This archipelago intercepts the Canary Current, the easternmost branch of the Azores Current in the North Atlantic Subtropical Gyre, which brings large amounts of litter from remote sources via oceanic transportation. It is, therefore, particularly vulnerable to marine plastic pollution
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Temporal fluctuation of metallic trace elements concentrations in three morphotypes of floating holopelagic Sargassum from the Caribbean coast (Guadeloupe, French West Indies) Mar. Pollut. Bull. (IF 5.8) Pub Date : 2024-03-13 Océanne-Amaya Cipolloni, Patrice Couture, Sébastien Cordonnier, Pierre-Yves Pascal
Since 2011, the Caribbean coasts have unprecedented stranding of a pelagic brown macroalgae inducing damages for coastal ecosystems and economy. This study evaluated the temporal fluctuations of metallic trace elements (MTE) in freshly arrived on the Caribbean coast. From May 2020 to September 2021, 12 floating samples of three morphotypes ( III and I and VIII) were regularly collected in the Petit
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Underwater acoustic signal classification based on a spatial–temporal fusion neural network Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-13 Yan Wang, Jing Xiao, Xiao Cheng, Qiang Wei, Ning Tang
In this paper, a novel fusion network for automatic modulation classification (AMC) is proposed in underwater acoustic communication, which consists of a Transformer and depth-wise convolution (DWC) network. Transformer breaks the limitation of sequential signal input and establishes the connection between different modulations in a parallel manner. Its attention mechanism can improve the modulation
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Development of a nature-based solution for mitigation of Pacific oyster summer mortality: use of the intertidal zone to improve resilience to environmental stressors Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-13 Clara L. Mackenzie, Monique R. Raap, Sarah Leduc, Chen Yin V. Walker, Timothy J. Green, Eliah Kim, Emaline M. Montgomery, Sierra L. M. Gray, Amy Long, Christopher M. Pearce
In recent years, Pacific oyster growers in British Columbia (BC), Canada have experienced devastating losses due to summer mortality syndrome. While anecdotal evidence suggests that intertidally-grown oysters may fare better during mass mortality events than deep-water counterparts, there remains a lack of research examining how different culture conditions may influence severity. To address this,
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Patterns of distribution of mollusc fauna associated with Halopteris scoparia (Linnaeus) Sauvageau: a baseline study in the Azores archipelago helps understanding the impact of climate change/invasive species on biodiversity Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-13 Sérgio P. Ávila, Ana Cristina Costa, Patrícia Madeira, João Brum, Afonso C. L. Prestes, João Faria, Gustavo M. Martins
This work was done on 1996 and 1997, and presents an extremely valuable baseline to compare the recent and future changes on the insular shallow habitats of the Azorean islands. We examined the structure of the molluscan communities of the macroalgae Halopteris scoparia in São Miguel Island (Azores, Portugal). This island was chosen because it is the largest and the most populated of the archipelago
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A study of forecast sensitivity to observations in the Bay of Bengal using LETKF Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-13 Biswamoy Paul, Balaji Baduru, Arya Paul
IntroductionAssimilating all available observations in numerical models may lead to deterioration of the analysis. Ensemble Forecast Sensitivity to Observations (EFSO) is a method that helps to identify all such observations which benefit the analyses. EFSO has never been tested in an ocean data assimilation system because of a lack of robust formulation of a squared norm against which beneficiality
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Dynamic typhoon visualization based on the integration of vector and scalar fields Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-13 Chongjun Feng, Tao Qin, Bo Ai, Jun Ding, Tianyu Wu, Ming Yuan
Typhoons and other marine meteorological disasters often bring significant losses to human beings, and their data are characterized by multiple sources and scales, making traditional visualization methods unable to accurately express the characteristics and movement trends of the disasters. To address the above problems, this study proposes a typhoon dynamic visualization method based on the integration
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A study on the pathways and their interannual variability of the Fukushima-derived tracers in the northwestern Pacific Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-13 Sang-Yeob Kim, Ho Jin Lee, Kyung Tae Jung, Haejin Kim, Kyeong Ok Kim
This study investigates that the subsurface pathways, travel time, and its interannual variability of Fukushima-derived tracers subducted with the North Pacific subtropical mode water (NPSTMW) using 22-year-long (1994–2015) eddy-resolving (1/12°) and eddy-permitting (1/4°) ocean reanalysis. The NPSTMW is a thick subsurface layer with low potential vorticity and relatively uniform potential density
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Benefits and approaches of incorporating land–sea interactions into coastal spatial planning: evidence from Xiamen, China Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-13 Shuo Wang, Jiaju Lin, Xiongzhi Xue, Yanhong Lin
As the land–sea interface, the coastal zone has become an increasingly key life-support system. However, it is also highly threatened by exposure to both ocean- and land-based human activities. The interdependencies of the land and sea systems require the integration of land and sea spatial planning to achieve sustainable development of coastal zones. There are different forms of land–sea spatial management
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Large protistan mixotrophs in the North Atlantic Continuous Plankton Recorder time series: associated environmental conditions and trends Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-13 Karen Stamieszkin, Nicole C. Millette, Jessica Y. Luo, Elizabeth Follett, Nicholas R. Record, David G. Johns
Aquatic ecologists are integrating mixotrophic plankton – here defined as microorganisms with photosynthetic and phagotrophic capacity – into their understanding of marine food webs and biogeochemical cycles. Understanding mixotroph temporal and spatial distributions, as well as the environmental conditions under which they flourish, is imperative to understanding their impact on trophic transfer and
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Mapping seabird vulnerability to offshore wind farms in Norwegian waters Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-13 Per Fauchald, Victoria Marja Sofia Ollus, Manuel Ballesteros, Arild Breistøl, Signe Christensen-Dalsgaard, Sindre Molværsmyr, Arnaud Tarroux, Geir Helge Systad, Børge Moe
IntroductionOffshore wind energy development (OWED) has been identified as a major contributor to the aspired growth in Norwegian renewable energy production. Spatially explicit vulnerability assessments are necessary to select sites that minimize the harm to biodiversity, including seabird populations. Distributional data of seabirds in remote areas are scarce, and to identify vulnerable areas, species
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Estimating nearshore infragravity wave conditions at large spatial scales Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-13 Tim W. B. Leijnse, Maarten van Ormondt, Ap van Dongeren, Jeroen C. J. H. Aerts, Sanne Muis
Infragravity waves may contribute significantly to coastal flooding, especially during storm conditions. However, in many national and continental to global assessments of coastal flood risk, their contribution is not accounted for, mostly because of the high computational expense of traditional wave-resolving numerical models. In this study, we present an efficient stationary wave energy solver to
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Enhancing climate change planning and adaptive management in marine protected areas through targets, thresholds, and social-ecological objectives Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-13 Kaia Bryce, Karen L. Hunter
Marine Protected Areas (MPAs) are being deployed globally to protect the Earth’s biodiversity in rapidly changing oceans. Nesting climate change considerations within adaptive MPA management and monitoring is becoming a more common approach, and while climate change is increasingly addressed in MPA planning, implementation gaps remain. This study applied the climate robustness index (CRI) to MPA monitoring
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Measuring coral disease lesions: a comparison of methodologies Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-13 Karen L. Neely
The presence of stressors, particularly disease, on corals necessitates assessments of their severity in order to compare threat levels and to plan for impacts. Diseases in particular are often measured via the rate at which a lesion moves across a coral (lesion progression rate) to determine the impact of those lesions and also to compare virulence across species, regions, and disease types. Lesion
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Phenotypic plasticity and carryover effects in an ecologically important bivalve in response to changing environments Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-13 Lindsay Alma, Paul McElhany, Ryan N. Crim, Jan A. Newton, Michael Maher, John B. Mickett, Jacqueline L. Padilla-Gamiño
Phenotypic plasticity can improve an organism’s fitness when exposed to novel environmental conditions or stress associated with climate change. Our study analyzed spatiotemporal differences in phenotypic plasticity and offspring performance in Olympia oysters Ostrea lurida. This species is an ecosystem engineer and is of great interest for commercial and restoration aquaculture. We used a multidisciplinary
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Entanglement and ingestion of microfibers by the oyster pea crab Zaops ostreum, an endosymbiont of the eastern oyster Crassostrea virginica Mar. Pollut. Bull. (IF 5.8) Pub Date : 2024-03-12 Linda J. Walters, Sidney J. Busch, Sophia Vermeulen, Casey A. Craig
The kleptoparasitic pea crab lives within the gills of bivalves, including the economically important eastern oyster . Previous research along the east coast of central Florida has found an average of 2.3 pieces of plastic per oyster. The goals of our research were to determine if filter-feeding oysters transfer microfibers to via the crab: 1) actively consuming plastic particles, or 2) passively becoming
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Nutrient characteristics driven by multiple factors in large estuaries during summer: A case study of the Yangtze River Estuary Mar. Pollut. Bull. (IF 5.8) Pub Date : 2024-03-12 Lilian Wen, Jinming Song, Jiajia Dai, Xuegang Li, Jun Ma, Huamao Yuan, Liqin Duan, Qidong Wang
Nutrients directly control the level of primary productivity and are crucial for the stability of marine ecosystems. Focusing on the survey results in August 2020 of the Yangtze River Estuary, this study elucidated the distribution characteristics and controlling factors of three nutrients: NO-N, PO-P, SiO-Si. The results showed that the concentrations of NO-N, PO-P, SiO-Si in the study area were generally
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Corrigendum to ‘Assessment of microplastic contamination in shrimps from the Bay of Bengal and associated human health risk’ [Mar. Pollut. Bull. (2024) 116185] Mar. Pollut. Bull. (IF 5.8) Pub Date : 2024-03-12 Fariha Tahsin Mercy, A.K.M. Rashidul Alam
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Detecting climate‐related shifts in lakes: A review of the use of satellite Earth Observation Limnol. Oceanogr. (IF 4.5) Pub Date : 2024-03-12 Elisa Calamita, J. Jelle Lever, Clement Albergel, R. Iestyn Woolway, Daniel Odermatt
Climate change exerts a profound impact on lakes, eliciting responses that range from gradual to abrupt transitions. When reaching critical tipping points, the established lake dynamics stand to undergo substantial modifications, setting off a chain reaction that reverberates through the entire ecosystem. This lake shift ripples into related ecosystem services and even influences the well‐being of
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The roles of river discharge and sea ice melting in formation of freshened surface layers in the Kara, Laptev, and East Siberian seas Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-12 Alexander Osadchiev, Ekaterina Kuskova, Vladimir Ivanov
Wide areas of the Siberian Arctic shelf are covered by freshened surface water layers, which are among the largest in the World Ocean. River discharge is the main freshwater source for formation of these layers; therefore, they are commonly referred to as river plumes (the Ob-Yenisei plume in the Kara Sea and the Lena plume in the Laptev and East Siberian seas). The contribution of sea ice meltwater
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Long-term trends and extreme events of marine heatwaves in the Eastern China Marginal Seas during summer Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-12 Jing Xu, Yunwei Yan, Lei Zhang, Wen Xing, Linxi Meng, Yi Yu, Changlin Chen
Marine heatwaves (MHWs) are a type of widespread, persistent, and extreme marine warming event that can cause serious harm to the global marine ecology and economy. This study provides a systematic analysis of the long-term trends of MHWs in the Eastern China Marginal Seas (ECMS) during summer spanning from 1982 to 2022, and occurrence mechanisms of extreme MHW events. The findings show that in the
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Nutrient enrichment alters phytoplankton biomass and composition via silicon limitation Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-12 Kriste Makareviciute-Fichtner, Birte Matthiessen, Heike K. Lotze, Ulrich Sommer
Despite management efforts, anthropogenic nutrient enrichments continue to enhance phytoplankton blooms worldwide. Release of nitrogen and phosphorus compounds not only provides surplus of nutrients but also disbalances their stoichiometry. Declines in the relative availability of dissolved silicon might induce limitation in diatoms, major primary producers with silicified shells. We studied experimentally
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Coastal cities governance in the context of integrated coastal zonal management: a sustainable development goal perspective under international environmental law for ‘coastal sustainability’ Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-12 Shijun Zhang, Qian Wu, M. Jahanzeb Butt, Yan-Ming Lv, Yan-E- Wang
Literature on integrated coastal zonal management (ICZM) for coastal sustainability from a legal perspective provided significant measures. Recently, sustainable development goals (SDGs) have become a focus in ICZM literature, which establishes coastal goals and connects these goals with other goals. Although integrating coastal goals into ICZM under international law challenges the existing models
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Risk level assessment of typhoon-induced wave fields around a large-scale suspended mussel farm Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-12 Yanjiao Li, Jun Lin, Wei Zhong, Sijian Wang, Long Li
Suspended shellfish aquaculture, utilizing longlines and buoys fixed on the sea surface, is a crucial source of global seafood. However, typhoons, as the most common disasters in coastal regions, can generate massive waves and pose a threat to the safety of suspended aquaculture facilities. Therefore, it is essential to investigate the risk levels associated with suspended aquaculture farms during
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Biomass estimations of cultivated kelp using underwater RGB images from a mini-ROV and computer vision approaches Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-12 Martin Molberg Overrein, Phil Tinn, David Aldridge, Geir Johnsen, Glaucia M. Fragoso
Seaweed farming is the fastest-growing aquaculture sector worldwide. As farms continue to expand, automated methods for monitoring growth and biomass become increasingly important. Imaging techniques, such as Computer Vision (CV), which allow automatic object detection and segmentation can be used for rapid estimation of underwater kelp size. Here, we segmented in situ underwater RGB images of cultivated
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Dynamics of currents in the Qiongzhou strait during spring and summer based on a numerical simulation Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-12 Quanxin Zheng, Huiqun Wang, Song Li, Zhenyi Cao, Min Bao
A high-precision three-dimensional hydrodynamic model based on the Semi-implicit Cross-scale Hydroscience Integrated System Model (SCHISM) was constructed to investigate the characteristics of residual currents in the Qiongzhou Strait during spring and summer. Results reveal an overall westward transport in the strait during spring and summer. However, the results also support the potential occurrence
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Genetic characterization of minor carp (Labeo gonius) from Indian rivers revealed through mitochondrial ATPase 6/8 and D-loop region analysis: implications for conservation and management Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-12 Suvra Roy, Bijay Kumar Behera, Ramya V. L., Ajay Kumar Rout, Vikash Kumar, Pranay Kumar Parida, Asim Kumar Jana, Pronob Das, Dharmendra Kumar Meena, Dibakar Bhakta, Absar Alam, Basanta Kumar Das, Joykrushna Jena
India is the habitat of many freshwater fish species that make a significant contribution to endemism. However, the native species population is declining at a very fast rate due to pollution, habitat loss or degradation, new species introduction, hydrologic alterations, and overfishing. The minor carp, Labeo gonius, is one of the important fish species in the Indian river systems and holds enormous
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Underwater small target detection based on dynamic convolution and attention mechanism Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-12 Chensheng Cheng, Can Wang, Dianyu Yang, Xin Wen, Weidong Liu, Feihu Zhang
In ocean observation missions, unmanned autonomous ocean observation platforms play a crucial role, with precise target detection technology serving as a key support for the autonomous operation of unmanned platforms. Among various underwater sensing devices, side-scan sonar (SSS) has become a primary tool for wide-area underwater detection due to its extensive detection range. However, current research
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Yarrowia lipolytica as a promising protein source for Pacific white shrimp (Litopenaeus vannamei) diet: impact on growth performance, metabolism, antioxidant capacity, and apparent digestibility Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-12 Lei Zhang, Pian Zhang, Peng Tan, Dongdong Xu, Ligai Wang, Zhili Ding, Qingjun Shao
Exploring alternatives to fishmeal (FM) in aquaculture nutrition remains a hot topic in this area. Yarrowia lipolytica (YL), a promising single-cell protein source, has yet to be evaluated for its use on the Pacific white shrimp (Litopenaeus vannamei) diet. This investigation assessed the effects of YL on growth performance, metabolism, antioxidant capacity, and nutrient digestibility in shrimp. Seven
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Effects of medium- and long-term high-salinity environments on free amino acid content and related genes of Sinonovacula constricta Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-12 Jie Zhu, Hongqiang Xu, Zihao Zou, Hanhan Yao, Zhihua Lin, Yinghui Dong
IntroductionThe razor clam, Sinonvacula constricta, one of the important mariculture bivalves in China, has unique flavor and wide salinity adaptability. The unique flavor mainly depends on the content of free amino acids and other umami substances in vivo. However, the flavor divergence of razor clam caused by the variable salinity breeding environment, while the mechanisms remain unclear.MethodsHere
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Plastic additives in commercial fish of Aegean and Ionian Seas and potential hazard to human health Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-12 Dimitra Marmara, Maria Violetta Brundo, Roberta Pecoraro, Elena Maria Scalisi, Martina Contino, Carmen Sica, Greta Ferruggia, Stefania Indelicato, Rosario Velardita, Francesco Tiralongo, Evangelia Krasakopoulou
Plastic additives include a wide range of pollutants, added throughout the production process of plastics aiming to improve their properties. Given that they are not chemically bound to the plastic items, they can easily migrate in the marine environment allowing their uptake by marine organisms and accumulation in their tissues. Representatives of Phthalic acid esters (PAEs) and bisphenols have been
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Microplastics in retail shellfish from a seafood market in eastern Thailand: Occurrence and risks to human food safety Mar. Pollut. Bull. (IF 5.8) Pub Date : 2024-03-11 Parnuch Hongsawat, Waleerat Thinjong, Bopit Chouychai, Patiparn Punyapalakul, Panida Prarat
This study aimed to investigate the presence of microplastics in three economically essential shellfish species: green mussels, cockles and spotted babylon. The average abundance of microplastics ranged from 2.41 to 2.84 particles/g wet weight. The predominant shape was fiber, with colors ranging from black-grey to transparent. The size of the microplastics discovered was <1.0 mm. Polystyrene and polyethylene
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Changes in isotope fractionation during nitrate assimilation by marine eukaryotic and prokaryotic algae under different pH and CO2 conditions Limnol. Oceanogr. (IF 4.5) Pub Date : 2024-03-11 Yawen Chen, Jin‐Yu Terence Yang, Jin‐Ming Tang, Haizheng Hong, Shuh‐Ji Kao, Minhan Dai, Dalin Shi
The impact of environmental factors on nitrogen (N) and oxygen (O) isotope effects during algal nitrate assimilation causes uncertainty in the field application of sedimentary N isotope records and nitrate isotopes to understand the marine nitrogen cycle. Ocean acidification is predicted to change nitrogen cycling including nitrate assimilation, but how N and O isotope effects during algal nitrate
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Geochemical behavior of C, N, and S in sediments of Hangzhou Bay, Southeastern China: implications for the study of paleoclimate and sea-level changes Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-11 Qin Gao, Alexander M. Piotrowski, Zilong Li, Pei Sun Loh, Cuicui Han, Zixuan Wang, Shihang Yang, Zengqing Guo, Dongqin Huang, Yanting Chen
The correlation between the amount of organic carbon (OC) and sulfur (S) in sediments has been widely used as a paleosalinity indicator to distinguish between marine and freshwater environments. However, whether the ratio of total OC to total S (TOC/TS) can be used to identify unsteady or dynamic marine environments across sedimentary strata is still contended. An HZW1907 sediment core of 80 m in length
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Effective “off-on” switch for fertility control in female zebrafish Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-11 Shengchi Shi, Yuqing Zhang, Jianfei Huang, Qiyong Lou, Xia Jin, Jiangyan He, Gang Zhai, Zhan Yin
The implementation of a controllable sterility strategy is crucial for the commercialization of precise trait improvements in farmed fish using genome editing and sustainable development of fisheries. Our previous research has demonstrated that females deficient in pituitary gonadotropin luteinizing hormone β-subunit (lhβ) or gonadal steroidogenesis gene steroidogenic acute regulatory protein (star)
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Taxonomic and functional-trait metrics track recovery of demersal fish and shrimp communities following system collapse Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-11 Magnus Aune, Virginie Ramasco, Nadine Wells, Margaret Warren, Frédéric Cyr, Eric J. Pedersen, Mariano Koen-Alonso, Elena Eriksen, Raul Primicerio, Ulf Lindstrøm, Paul E. Renaud
Monitoring programs that integrate both structural and functional ecosystem components play integral roles in ecosystem management and conservation planning. In the early 1990’s, the marine ecosystem of the waters surrounding Newfoundland and Labrador (NL) underwent a regime shift. Several demersal and pelagic fish stocks collapsed simultaneously, and this had significant ecological and socioeconomic
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A demographic model to forecast Dinophysis acuminata harmful algal blooms Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-11 Vasco Manuel Nobre de Carvalho da Silva Vieira, Teresa Leal Rosa, Luís Sobrinho-Gonçalves, Marcos Duarte Mateus, Bernardo Mota
Harmful algal blooms (HABs) in marine environments have significant adverse effects on public health, aquaculture and recreational activities. Surges of certain phytoplanktonic toxin-producing microalgae (mostly dinoflagellates or diatoms species) can induce Amnesic, Diarrhetic or Paralytic Shellfish Poisoning (ASP, DSP and PSP). Among HAB species, the genus Dinophysis leads to DSP in human consumers;
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A hybrid CEEMDAN-VMD-TimesNet model for significant wave height prediction in the South Sea of China Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-11 Tong Ding, De’an Wu, Yuming Li, Liangshuai Shen, Xiaogang Zhang
Accurate prediction of significant wave height is of great reference value for wave energy generation. However, due to the non-linearity and non-stationarity of significant wave height, traditional algorithms face difficulties in achieving satisfactory prediction results. In this study, a hybrid CEEMDAN-VMD-TimesNet model is proposed for non-stationary significant wave height prediction. Based on the
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Fungal endophytes from Thalassia testudinum show bioactivity against the seagrass pathogen, Labyrinthula spp. Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-11 Kelly Ugarelli, Annika Jagels, Chang Jae Choi, Sandra Loesgen, Ulrich Stingl
Thalassia testudinum has undergone die-offs in the past century due to seagrass wasting disease caused by Labyrinthula sp. Little is known about how seagrasses resist Labyrinthula infections, but metabolites that inhibit Labyrinthula were previously extracted from seagrass leaves. Furthermore, leaf fungal endophytes from seagrasses possess antipathogenic potential, but their activity against Labyrinthula
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Biologically Important Areas II for cetaceans within U.S. and adjacent waters - West Coast Region Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-11 John Calambokidis, Michaela A. Kratofil, Daniel M. Palacios, Barbara A. Lagerquist, Gregory S. Schorr, M. Bradley Hanson, Robin W. Baird, Karin A. Forney, Elizabeth A. Becker, R. Cotton Rockwood, Elliott L. Hazen
Here we update U.S. West Coast Biologically Important Areas (BIAs) that were published in 2015 using new data and approaches. Additionally, BIAs were delineated for two species that were not delineated in the 2015 BIAs: fin whales and Southern Resident killer whales (SRKW). While harbor porpoise BIAs remained the same, substantial changes were made for other species including identifying both larger
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Research for development: evidence-based hilsa management improvements in Myanmar Front. Marine Sci. (IF 3.7) Pub Date : 2024-03-11 Michael Akester, Annabelle Bladon, John Conallin
The hilsa (Tenualosa ilisha) fishery in Myanmar is of importance as it provides an income for around 1.6 million artisanal low-income fisher households and generated USD 237.32M in export earnings from 156,000 metric tons in 2021. Fisheries Performance Indicator assessments have shown that the fishery, both artisanal and industrial, is close to economic collapse. Research was undertaken to find ways
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Spatial distribution, mass flux, and ecological risk of antibiotics in Taiwan and Luzon Straits: A case in the West Pacific Region Mar. Pollut. Bull. (IF 5.8) Pub Date : 2024-03-10 Jieyi Diao, Jianwen Wang, Yuxin Xie, Jiaer Zhang, Tieyu Wang
Emerging pollutants are hazardous to the ecological environment and human health, and these issues have attracted increasing attention from scholars. In the current study, the Taiwan Strait is long and narrow, highly influenced by terrestrial domains, and frequently disturbed by human activities. Conversely, the Luzon Strait is an open sea far from the shore, and the impact of human activities on it
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Corrigendum to “Why, and where, is commercial fishing gear lost? A global review and case study of Pacific Canada” [Mar. Pollut. Bull. 196 (2023) 1–12 (115528)] Mar. Pollut. Bull. (IF 5.8) Pub Date : 2024-03-10 Caitlin Frenkel, Megan Eadie, Adrienne Murphy, Josephine C. Iacarella, Natalie C. Ban
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Plant‐sediment interactions decouple inorganic from organic carbon stock development in salt marsh soils Limnol. Oceanogr. Lett. (IF 7.8) Pub Date : 2024-03-09 Dirk Granse, Antonia Wanner, Martin Stock, Kai Jensen, Peter Mueller
The storage of organic carbon in the soils of salt marshes and other coastal blue carbon ecosystems has gained considerable attention by the scientific community for more than a decade now, while the relevance and mechanisms of soil inorganic carbon accumulation remain poorly understood. Using long‐term annual accretion monitoring over 17 years in N = 50 permanent plots distributed across a 1050‐ha
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Particulate organic carbon sedimentation triggers lagged methane emissions in a eutrophic reservoir Limnol. Oceanogr. Lett. (IF 7.8) Pub Date : 2024-03-09 Andrés Martínez‐García, Ignacio Peralta‐Maraver, Eva Rodríguez‐Velasco, Gema L. Batanero, Miriam García‐Alguacil, Félix Picazo, Juan Calvo, Rafael Morales‐Baquero, Francisco J. Rueda, Isabel Reche
Reservoirs act as carbon sinks when sedimentation of particulate organic carbon (POC) exceeds CO2 and CH4 emissions. Here, we study the poorly explored process where phytoplankton‐derived acidic polysaccharides (APs) aggregate into particulate organic matter, promoting carbon export to sediments. This source of POC in sediments can mineralize to CO2 and CH4 over various timescales. Our research, centered
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Vertical trophic structure and niche partitioning of gelatinous predators in a pelagic food web: Insights from stable isotopes of siphonophores Limnol. Oceanogr. (IF 4.5) Pub Date : 2024-03-09 Elizabeth D. Hetherington, Hilary G. Close, Steven H. D. Haddock, Alejandro Damian‐Serrano, Casey W. Dunn, Natalie J. Wallsgrove, Shannon C. Doherty, C. Anela Choy
Gelatinous zooplankton are increasingly recognized as key components of pelagic ecosystems, and there have been many recent insights into their ecology and roles in food webs. To examine the trophic ecology of siphonophores (Cnidaria, Hydrozoa), we used bulk (carbon and nitrogen) and compound‐specific (nitrogen) isotope analysis of individual amino acids (CSIA‐AA). We collected samples of 15 siphonophore