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Exploring spatio-temporal heterogeneity and inter-domain ecological networks of biological community in a marine ranching habitat: Implications for fishery resources conservation

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Reproduction and Breeding 2025年第2期5卷 1-10页

作者： Lei, Zeng Guobao, Chen Tingting, Zheng Yuxiang, Chen jie, Yu Wuhui, Li Engineering Research Center of Polyploid Fish Reproduction and Breeding of the State Education Ministry State Key Laboratory of Developmental Biology of Freshwater Fish College of Life Sciences Hunan Normal University Hunan Changsha 410081 China Key Laboratory of Marine Ranch Technology South China Sea Fisheries Research Institute Chinese Academy of Fishery Sciences Guangdong Guangzhou 510300 China

Habitat changes in marine ranching can cause variations in biological resources and community structure. However, the complex inter-domain ecological network (IDEN) in this particular habitat are not well understood. Thus, we employed field surveys and multivariate statistical analyses to explore the spatio-temporal heterogeneity and the IDEN of biological communities within a marine ranching in southern Yintan of Beihai City, China. Our findings indicated that seasonal succession and artificial reefs (ARs) deployment had simultaneous effects on both biotic and abiotic factors, and the former effect was more pronounced. Based on orthogonal partial least squares discriminant analysis (OPLS-DA), various biota (phytoplankton, zooplankton, and nekton) can be broadly categorized into four groups on seasonal and spatial scales. Variable importance projection (VIP) and redundancy analysis (RDA) demonstrated that autumn biomarkers such as Hemidiscus hardmannianus, Oikopleura rufescens, Lagocephalus lunaris were positively correlated with water temperature (WT), salinity (Sal) and inorganic nitrogen (IN), whereas spring biomarkers such as Rhizosolenia robusta, Euconchoecia aculeata, Penaeus penicillatus were positively correlated with dissolved (DO), chemical oxygen demand (COD), and inorganic phosphorus (IP). The IDEN analysis revealed that 23 species such as Chaetoceros densus, Centropages tenuiremis, and Parargyrops edita played a key role in maintaining the stability of the biological communities in the studied sea area. This study can provide novel insights and theoretical supports for the ecological effects analysis and species protection in marine ranching. © 2025 The Authors

关键词： Community structure Habitat change marine ranching Network relationship Resource dynamic

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Advancements in research and current applications of

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The European Physical Journal Special Topics 2025年 1-29页

作者： Zhou, Zhengrong Zhang, Hongwei Huang, Rongjin He, Feng Xu, Dong Yan, Xiuwen Li, Laifeng Technical Institute of Physics and Chemistry Key Laboratory of Cryogenic Science and Technology Chinese Academy of Sciences Beijing China Hunan Key Laboratory of High-Performance Intelligent Sensor and Detection System The 48th Research Institute of CETC Changsha China Hunan National Defense Key Laboratory of Thin Film Sensing Technology The 48th Research Institute of CETC Changsha China School of Future Technology University of Chinese Academy of Sciences Beijing China

In recent years, superconducting quantum interference devices (SQUIDs) based on the Josephson effect have undergone significant advancements. As one of the most sensitive and precise instruments for measuring magnetic fields, SQUIDs are widely used in low-frequency communications, biomagnetic measurements, aerial magnetometry, nondestructive testing, magnetic measurement microscopy, and other fields. The development of SQUIDs involves theories and technologies such as electromagnetic theory, superconductivity, semiconductor technology, thin film fabrication technology, packaging technology, electronic circuits, and cryogenics, reflecting a product of multidisciplinary integration. This paper reviews and summarizes the principles, types, processes, system structures, and current research status of SQUIDs while anticipating future developments in this field.

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Ai Forecasting of High-Spatiotemporal Resolution Three-Dimensional Ocean Temperature Structures: Remote Sensing Data Driven Becomes a New Possibility

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SSRN 2025年

作者： Jiang, Jiawei Mo, Huier Wan, Liying Wang, Jun Zhang, Bin Zhang, Lin Zhang, Xiangguang Key Laboratory of Ocean Observation and Forecasting Key Laboratory of Ocean Circulation and Waves Institute of Oceanology Chinese Academy of Sciences Qingdao266071 China Laboratory for Ocean Dynamics and Climate Qingdao Marine Science and Technology Center Qingdao266237 China University of Chinese Academy of Sciences Beijing100049 China Key Laboratory of Research on Marine Hazards Forecasting National Marine Environmental Forecasting Center Beijing100081 China College of Meteorology and Oceanography National University of Defense Technology Changsha410073 China Hunan Key Laboratory for Marine Detection Technology Changsha410073 China Oceanographic Data Center Institute of Oceanology Chinese Academy of Sciences Qingdao266071 China Navy Submarine Academy Qingdao266199 China Laoshan Laboratory Qingdao266237 China Qingdao Institute of Collaborative Innovation Qingdao266071 China

Accurate prediction of three-dimensional (3D) ocean structures is essential for understanding oceanic processes and guiding marine activities. Although large, numerically driven oceanographic models offer good forecasting performance, they are limited by their reliance on physically driven, numerically simulated profiles for their input, leading to high computational costs and usage constraints. This study explores a method for directly forecasting high-spatiotemporal resolution 3D ocean temperature structures using multisource remote sensing data in surface-to-profile (S2P) mode, comparing it with predictions from numerical simulation profiles in profile-to-profile (P2P) mode. We propose lightweight network model with a multiscale residual spatiotemporal window attention mechanism (MSWO) to forecast 3D ocean temperature structures at a 1/12° resolution. Extensive experiments are conducted using the world’s leading Intercomparison and Validation Task Team framework (IV-TT) to evaluate the model’s performance in test dataset. Compared with mainstream ocean forecasting systems, such as the Forecast Ocean Assimilation Model, BLUElink OceanMAPS (BLK), Global Ice Ocean Prediction System (GIOPS), and Mercator Ocean Physical SYstem (PSY4), the MSWO model provides results comparable to operational forecasting models in S2P mode and delivers superior accuracy in P2P mode. Furthermore, the MSWO model outperforms other data-driven artificial intelligence models in terms of training cost and accuracy. This study provides a new approach to accurate marine environment forecasting, demonstrating that high-temporal and spatial resolution 3D ocean environment predictions can be effectively obtained from satellite remote sensing data. © 2025, The Authors. All rights reserved.

关键词： Ocean structures

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Colorimetry/Smartphone Dual-Mode Sensing of Ascorbic Acid by a Co-Fe Pba-Based Peroxidase-Like Platform

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SSRN 2025年

作者： Shi, Weiyan Yang, Xin Yang, Tong Bai, Long Guo, Ruike Xie, Yu Ye, Tai Zhang, Xinning Yu, Jinsong Xu, Fei Shanghai Engineering Research Center of Food Rapid Detection School of Health Science and Engineering University of Shanghai for Science and Technology Shanghai200093 China Key Laboratory of Research and Utilization of Ethnomedicinal Plant Resources of Hunan Province Hunan Engineering Laboratory for Preparation Technology of Polyvinyl Alcohol Fiber Material Huaihua University Huaihua418000 China Huaihua University China

Recently, large enthusiasm in catalysts-based nanozymes for different catalytic systems continues heating up. However, the low catalytic capacity of the reported enzyme-mimic catalysts does not achieve the actual application. In this work, Co-Fe prussian blue analogs yolk-shelled nanocubes (Co-Fe PBAs YSHCs) successfully prepared by a template-assistant ion exchange method are demonstrated for efficient AA sensing. The as-prepared Co-Fe PBAs YSHCs displays a superior and desirable peroxidase-like activity. The unique YSHCs structures can expose large active sites and boost the stability during the colorimetric sensing process. As a result, the Co-Fe PBAs YSHCs sensing platform can sensitively and accurately determinate AA in the colorimetric and smartphone modes with consistent data. In colorimetry and smartphone sensing modes, the wide linear ranges of AA were 1-95 mM with a low limit of detection of 0.9 mM. In addition, the Co-Fe PBAs YSHCs sensing platform can be explored for AA detection in human serum samples with good satisfactory recoveries. This work provides an ideal for preparing catalysts and pioneers the investigation of nanozymes with peroxidase-like activity in biosensing platform. © 2025, The Authors. All rights reserved.

关键词： Colorimetry

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Effects of Active and Reactive Power Control on Inertia in DFIG-Based Wind Turbines

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IEEE Transactions on Power Electronics 2025年

作者： Guo, Xiang Tang, Qingbo Zhu, Donghai Zhou, Yini Zou, Xudong Hu, Jiabing Kang, Yong China University of Mining and Technology School of Electrical Engineering Xuzhou221116 China Hubei Key Laboratory of Marine Electromagnetic Detection and Control Wuhan430064 China Huazhong University of Science and Technology State Key Laboratory of Advanced Electromagnetic Technology School of Electrical and Electronic Engineering Wuhan430074 China

The inertia analysis for wind turbines (WTs) typically focuses on the electromechanical timescale. Active power control (APC) and phase-locked loop (PLL) are essential considerations while reactive power control (RPC) is often deemed negligible, particularly in stiff grid. However, such assumptions may be inappropriate. Therefore, this article aims to comprehensively examine the effects of APC and RPC on the inertia for doubly fed induction generator (DFIG)-based WTs. Firstly, phase motion models are developed by incorporating various combinations of control loops, including APC, RPC, and different PLL configurations. Subsequently, the impacts of the APC and RPC on the inertia are examined in detail. The analysis reveals that the APC diminishes inertia, whereas the RPC significantly enhances the inertia. Additionally, special attention should be given to phase characteristics of the inertia transfer function, as they can substantially influence inertial performance. Furthermore, an improved frequency support method is proposed, which achieves superior frequency response without necessitating the PLL bandwidth to be adjusted to extremely low values, such as 1 Hz or lower. Finally, the analysis and the proposed method are validated through experiments. © 1986-2012 IEEE.

关键词： Wind turbines

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Predefined-time terminal sliding mode cooperative trajectory tracking control for USV-AUV under weak communication

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Ocean Engineering 2025年 333卷

作者： Hu, Ruilin Wu, Defeng You, Zheng Wu, Dongjie Tu, Wanli School of Marine Engineering Jimei University 176 Shigu Road Fujian Xiamen361021 China Fujian Provincial Key Laboratory of Naval Architecture and Ocean Engineering 176 Shigu Road Fujian Xiamen361021 China Fujian Institute of Innovation for Marine Equipment Detection and Remanufacturing Industrial Technology 176 Shigu Road Fujian Xiamen361021 China

This study presents a novel predefined-time terminal sliding mode control (PTSMC) strategy for a heterogeneous cooperative system consisting of an unmanned surface vehicle (USV) and an autonomous underwater vehicle (AUV). To facilitate coordination, a three-dimensional vertical projection guidance method is employed, enabling the USV to transmit state information to the AUV. Subsequently, a predefined-time terminal sliding mode controller is developed to enhance convergence efficiency and steady-state performance. To avoid singularity issues, the sliding surfaces are designed to switch adaptively under different conditions. The control scheme ensures that the cooperative system reaches stability within a predefined time, which can be explicitly configured by tuning specific control parameters. To enhance robustness, a nonlinear disturbance observer is introduced to estimate unknown external disturbances. Furthermore, under weak communication conditions, a predictive compensation approach based on curve fitting is proposed to mitigate performance degradation caused by packet loss. The effectiveness of the proposed cooperative control method, along with its advantages in rapidity and reliability, is demonstrated through simulation results. © 2025 Elsevier Ltd

关键词： Robustness (control systems)

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Colorimetry/smartphone dual-mode sensing of ascorbic acid by a Co-Fe Prussian blue analog-based peroxidase-like platform

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Results in Chemistry 2025年 16卷

作者： Shi, Weiyan Zhang, Xinning Yang, Xin Bai, Long Yu, Jinsong Xu, Fei Ye, Tai Shanghai Engineering Research Center of Food Rapid Detection School of Health Science and Engineering University of Shanghai for Science and Technology Shanghai 200093 China Key Laboratory of Research and Utilization of Ethnomedicinal Plant Resources of Hunan Province Hunan Engineering Laboratory for Preparation Technology of Polyvinyl Alcohol Fiber Material College of Chemistry and Materials Engineering Huaihua University Huaihua 418000 China

Recently, enthusiasm for catalysts-based nanozymes in various catalytic systems has been growing significantly. However, the low catalytic capacity of reported enzyme-mimic catalysts has not met the requirements for practical applications. In this work, Co-Fe Prussian blue analogs yolk-shelled nanocubes (Co-Fe PBAs YSHCs) successfully prepared by a template-assisted ion exchange method are demonstrated for efficient AA sensing. The as-prepared Co-Fe PBAs YSHCs display superior and desirable peroxidase-like activity. The unique YSHCs structures can expose large active sites and enhance the stability during the colorimetric sensing process. As a result, the Co-Fe PBAs YSHCs sensing platform can sensitively and accurately determine AA in both colorimetric and smartphone sensing modes, the wide linear ranges for AA were 1–95 μM with a low limit of detection of 0.9 μM. In addition, the Co-Fe PBAs YSHCs sensing platform can be explored for AA detection in human serum samples, yielding satisfactory recoveries. This work provides an ideal method for preparing catalysts and pioneers the investigation of nanozymes with peroxidase-like activity in biosensing platform. © 2025

关键词： Ascorbic acid Co-Fe Prussian blue analogs Dual-mode Nanozymes Template-assistant ion exchange

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Mariculture increases microbially-driven carbon metabolism and sequestration in coastal ecosystems

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Journal of Environmental Management 2025年 386卷 125756页

作者： Liu, Huanping Fan, Yijun Su, Erxin Liu, Shengwei Ming, Yuzhen Huang, Zhenyu Yu, Huang Liu, Fei Wang, Cheng Yu, Xiaoli Niu, Mingyang Wu, Kun Yang, Yufeng He, Zhili Zhang, Tao Yan, Qingyun Guangdong Provincial Observation and Research Station for Marine Ranching in Lingdingyang Bay China ASEAN Belt and Road Joint Laboratory on Mariculture Technology State Key Laboratory for Biocontrol Sun Yat-sen University Guangdong Guangzhou510006 China School of Agriculture and Biotechnology Sun Yat-sen University Guangdong Shenzhen518107 China Department of Ocean Science The Hong Kong University of Science and Technology Clear Water Bay Hong Kong 999077 Hong Kong Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy University of South China Hunan Hengyang421001 China

Mariculture has expanded significantly in recent decades due to rising seafood demand and its contribution to ocean carbon sequestration. While the mechanisms of carbon sequestration in mariculture are well-established, the roles of microorganisms in sedimentary carbon sequestration have rarely been explored. How microorganisms mediate organic carbon metabolism and their effects on coastal carbon pools remain unclear. Here we tested the carbon fraction and contents, as well as extracellular hydrolase activities in macroalgae culture area, fish or abalone culture area, and control area without mariculture. We profiled microbial community composition and carbon metabolism characteristics in sediments through 16S rRNA gene amplicon sequencing and metagenomics. Our findings revealed that macroalgae culture areas exhibited a significantly greater potential for carbon sequestration than the control area, the concentration of TOC in seawater and the contents of SOC, DOC, and ROC in sediments were significantly (p 3−) could potentially enhance microbial degradation of organic carbon, decreasing carbon stock within coastal sediments. This study enhanced our understanding of microbial regulation of the organic carbon pool in the mariculture ecosystem. © 2025 Elsevier Ltd

关键词： Carbon sequestration Mariculture sediments Metagenomics Microbial metabolism

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Estimation of S-wave Velocity for Gas Hydrate Reservoir in the Shenhu Area,North South China Sea

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Journal of Ocean University of China 2018年第5期17卷 1091-1102页

作者： LIU Xueqin XING Lei LIU Huaishan Key Laboratory of Submarine Geosciences and Prospecting Techniques MOE and College of Marine GeosciencesOcean University of China Evaluation and Detection Technology Laboratory of Marine Mineral Resources Qingdao National Laboratory for Marine Science and Technology

Estimation of S-wave velocity using logging data has mainly been performed for sandstone, mudstone and oil and gas strata, while its application to hydrate reservoirs has been largely overlooked. In this paper we present petxophysical methods to estimate the S-wave velocity of hydrate reservoirs with the P-wave velocity and the density as constraints. The three models used in this paper are an equivalent model （MBGL）, a three-phase model （TPBE）, and a thermo-elasticity model （TEM）. The MBGL model can effectively describe the internal relationship among the components of the rock, and the estimated P-wave velocities are in good agreement with the measured data （2.8% error）. However, in the TPBE model, the solid, liquid and gas phases axe considered to be independent of each other, and the estimation results are relatively low （46.6% error）. The TEM model is based on the sensitivity of the gas hydrate to temperature and pressure, and the accuracy of the estimation results is also high （3.6% error）. Before the estimation, the occurrence patterns of hydrates in the Shenhu area were examined, and occurrence state one （the hydrate is in solid form in the reservoir） was selected for analysis. By using the known P-wave velocity and density as constraints, a reasonable S-wave velocity value （ranging from 400 to 1100 m s 1 and for a hydrate layer of 1100 m s 1） can be obtained through multiple iterations. These methods and results provide new data and technical support for further research on hydrates and other geological features in the Shenhu area.

关键词： S-wave velocity estimation hydrate reservoir rock physical model

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A Global Review of the Zoonotic Potential and Disease Risks of Amphibian Parasites in Bullfrog Aquaculture

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Reviews in Aquaculture 2025年第3期17卷

作者： Weng, Meiqi Liu, Xinhua Zhang, Chenxi Shu, Rui Wang, Andrew Zhang, Haotian Wang, Xingqiang Yang, Huirong Zhang, Jinyong Jiangsu Key Laboratory of Marine Biotechnology School of Marine Science and Fisheries Jiangsu Ocean University Liangyungang China Hunan Engineering Research Center for Utilization of Characteristics of Aquatic Resources College of Fisheries Hunan Agricultural University Changsha China Guangzhou Guanxing Agricultural Science and Technology Co. Ltd Guangzhou China Hillsdale High School San Mateo CA United States College of Marine Sciences South China Agricultural University Guangzhou China School of Marine Science and Engineering Qingdao Agricultural University Qingdao China

Amphibians are a diverse group of tetrapod vertebrates comprising three orders: Anura, Caudata, and Gymnophiona, which play important roles in worldwide ecosystems. Over the past 40 years, amphibian populations have sharply declined and some of them are even endangered. Specifically, it is estimated that 35 species have gone extinct, while 653 species are considered critically endangered, and 55 species are data deficient. Infectious diseases are a significant contributor to amphibian declines, with parasites being a key driving factor. A comprehensive understanding of amphibian parasites and their pathogenicity is essential for elucidating their detrimental effects on wild amphibian populations and potential risk for cultured frogs. This review summarizes the reported amphibian parasites globally, focusing on the notable pathogens that threaten the health of these populations. More than 1600 species across 19 taxa have been recorded, including 16 amoebae species, 147 apicomplexans, 86 ciliates, 52 euglena, 17 mesomycetozoans, 30 metamonads, 92 Opalinata, 11 perkinsus, 9 microsporidia, 31 myxozoans, 105 acanthocephalans, 91 cestodes, 310 trematodes, 11 monopisthocotyla, 125 polyopisthocotyla, 427 nematodes, 19 pentastomids, 11 branchiura, and 10 copepods. Their pathology and potential disease risks in bullfrog aquaculture were fully documented. Finally, their possible zoonotic risk and the potential for wild amphibian population declines are discussed. Conclusively, the consumption custom, cooking culture, increasing awareness of unscientific medical usage of frog meat and skin, and application of zoonotic parasites' transmission biology-based healthy aquaculture models and techniques determine the extremely low zoonotic risk of edible cultured bullfrogs. © 2025 John Wiley & Sons Australia, Ltd.

关键词： amphibian aquaculture bullfrog disease risk parasites zoonotic risk

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