Regional Studies in Marine Science最新文献_第2页

Investigating volatility, connectedness and portfolio strategies between bulk shipping and commodity market: A DCC-GARCH R2 decomposed connectedness measure 研究散货航运和大宗商品市场之间的波动性、连通性和投资组合策略：一个dc - garch R2分解的连通性度量

IF 2.1 4区环境科学与生态学

Regional Studies in Marine Science Pub Date : 2025-07-10 DOI: 10.1016/j.rsma.2025.104325

Jackson Jinhong Mi , Shek Ahmed , Yanhui Chen , Congzhi Zhang

{"title":"Investigating volatility, connectedness and portfolio strategies between bulk shipping and commodity market: A DCC-GARCH R2 decomposed connectedness measure","authors":"Jackson Jinhong Mi , Shek Ahmed , Yanhui Chen , Congzhi Zhang","doi":"10.1016/j.rsma.2025.104325","DOIUrl":"10.1016/j.rsma.2025.104325","url":null,"abstract":"<div><div>The bulk shipping sector is notably exposed to risks stemming from fluctuations in freight rates and the inherent volatility of commodity markets. Recent literature has extensively examined the asymmetric spillover connectivity between freight diversity and commodity markets; however, conventional methodologies cannot properly investigate return propagation dynamics. We apply the DCC-GARCH-based <span><math><msup><mrow><mi>R</mi></mrow><mrow><mn>2</mn></mrow></msup></math></span> decomposed connectedness measure to investigate conditional volatility connectedness within the major dry bulk freight market, incorporating the natural gas and iron ore futures markets from February 24, 2014, to April 5, 2024. In addition, this study introduces the frameworks of multivariate hedging portfolios and minimum decomposed connectedness portfolio techniques. The empirical results indicate that dynamic total connectedness exhibits time-varying behavior and is significantly affected by major economic events. Additionally, the empirical results indicate that the round voyage freight market between China and Brazil functions as a net transmitter, while the transpacific round voyage freight market serves as a significant net receiver within the system. Finally, we find that the decomposed connectedness portfolio technique outperforms both the natural gas and iron ore markets compared to multivariate portfolio techniques based on hedging effectiveness. These findings enhance the understanding of interconnectedness across interregional freight markets and provide valuable insights for market participants and stakeholders to refine hedging strategies and mitigate risks based on market interdependencies.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"89 ","pages":"Article 104325"},"PeriodicalIF":2.1,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144652995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preliminary assessment of microplastic contamination in fish species from Lake Maninjau, West Sumatra, Indonesia 印尼西苏门答腊岛马尼佐湖鱼类微塑料污染初步评估

IF 2.1 4区环境科学与生态学

Regional Studies in Marine Science Pub Date : 2025-07-10 DOI: 10.1016/j.rsma.2025.104346

Deswati Deswati , Aula Fatihatul Rizka , Zaki Aiwa Putra , Wiya Elsa Fitri , Suparno Suparno , Hilfi Pardi

{"title":"Preliminary assessment of microplastic contamination in fish species from Lake Maninjau, West Sumatra, Indonesia","authors":"Deswati Deswati , Aula Fatihatul Rizka , Zaki Aiwa Putra , Wiya Elsa Fitri , Suparno Suparno , Hilfi Pardi","doi":"10.1016/j.rsma.2025.104346","DOIUrl":"10.1016/j.rsma.2025.104346","url":null,"abstract":"<div><div>Lake Maninjau, a volcanic lake in West Sumatra, Indonesia, is increasingly affected by microplastic (MP) pollution, raising concerns over ecological integrity and potential human exposure via the food web. Despite its ecological and socio-economic relevance, few studies have explored MP contamination in fish from this lake. This preliminary and descriptive study investigates the abundance and basic characteristics of MPs found in several fish species, considering biological factors such as fish size and weight, and environmental factors based on sampling stations. Fish samples were collected from four locations within the lake. MPs were extracted using chemical digestion, filtered, and analyzed. MP concentrations ranged from 725 ± 25–1450 ± 100 particles/kg of fish tissue. Fragmented particles were predominant (60.56 %), with most measuring ≤ 101 µm (26.67 %) and appearing black in color (76.11 %). Polymer characterization using ATR-FTIR was limited to particles > 500 µm, identifying polyamide, polyethylene, and polyester. The findings suggest a high degree of MP contamination in Lake Maninjau fish, although limitations in polymer identification and statistical depth must be acknowledged. This study serves as a foundational reference for future research on microplastic pollution in freshwater systems and highlights the urgent need for more comprehensive investigations and pollution mitigation strategies.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"89 ","pages":"Article 104346"},"PeriodicalIF":2.1,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144604768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessment of treatment efficiency and potential marine environmental risk of petrochemical effluents from the GL3-Z Refinery in Arzew, Algeria 阿尔及利亚Arzew GL3-Z炼油厂石化废水处理效率和潜在海洋环境风险评估

IF 2.1 4区环境科学与生态学

Regional Studies in Marine Science Pub Date : 2025-07-10 DOI: 10.1016/j.rsma.2025.104339

Abdessamed Mahboubi , Ali Kherraz , Anas Mami

{"title":"Assessment of treatment efficiency and potential marine environmental risk of petrochemical effluents from the GL3-Z Refinery in Arzew, Algeria","authors":"Abdessamed Mahboubi , Ali Kherraz , Anas Mami","doi":"10.1016/j.rsma.2025.104339","DOIUrl":"10.1016/j.rsma.2025.104339","url":null,"abstract":"<div><div>This study presents a 27-month monitoring (January 2021–March 2023) of treated industrial effluents from the GL3-Z refinery wastewater treatment plant (WWTP) in Arzew, Algeria. A total of 27 samples were analyzed using standard methods to investigate physicochemical parameters from the industrial effluent, including temperature, pH, total suspended solids (TSS), chemical oxygen demand (COD), biochemical oxygen demand over 5 days (BOD₅), phosphate (PO₄³⁻), cyanide (CN⁻) and concentrations of selected heavy metals ions such as Cr(VI), Fe(II), Cu(II), Zn(II). The obtained results were: temperature (15.10–28.13 °C), pH (4.04–5.97), TSS (8.00–272.00 mg/L), COD (15.50–317.33 mg/L), BOD₅ (0.80–108.93 mg/L), PO₄³ ⁻(36.75–103.95 mg/L), Zn(II) (0.037–0.90 mg/L), Fe(II) (0.16–26.30 mg/L), Cr(VI) (0.002–0.18 mg/L), Cu(II) (0.02–25.57 mg/L), and CN⁻ (0.001–0.16 mg/L). The major findings of this research work reveal the ineffectiveness of the treatment system employed by the WWTP in reducing TSS, COD, BOD₅, PO₄³ ⁻, Cu(II), Zn(II), Cr(VI), and CN⁻ levels to comply with the regulatory standards of the Ministry of Land Planning and Environment of Algeria, the World Bank Group, and the Australian and New Zealand Environment and Conservation Council. The results showed that effluents from this WWTP are potential sources of marine pollution and call for urgent improvement of WWTP operations to ensure safe effluent discharge.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"89 ","pages":"Article 104339"},"PeriodicalIF":2.1,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144596024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Stratigraphic sequences off NE Hainan Island: Controls on sand resource distribution in the South China Sea 海南岛东北缘地层层序：对南海砂资源分布的控制

IF 2.1 4区环境科学与生态学

Regional Studies in Marine Science Pub Date : 2025-07-09 DOI: 10.1016/j.rsma.2025.104327

Guowei Fu , Wanli Chen , Shiguo Wu , Siyu Wang , Junjin Chen , Fanchang Zeng , Yue Sun , Xuelin Li

{"title":"Stratigraphic sequences off NE Hainan Island: Controls on sand resource distribution in the South China Sea","authors":"Guowei Fu , Wanli Chen , Shiguo Wu , Siyu Wang , Junjin Chen , Fanchang Zeng , Yue Sun , Xuelin Li","doi":"10.1016/j.rsma.2025.104327","DOIUrl":"10.1016/j.rsma.2025.104327","url":null,"abstract":"<div><div>Sand ridges represent key components of Quaternary transgressive successions. Understanding their sediment routing history is critical for developing predictive models of marine sand resource distribution under rising sea-level scenarios. In the NE Hainan offshore area, while modern sand ridges dominate the seafloor, their sediment provenance and evolutionary trajectory remain poorly constrained, impeding systematic resource exploration. To address this knowledge gap, we integrate high-resolution single-channel seismic profiling with sequence stratigraphic analysis to reconstruct the depositional architecture and sediment routing pathways in this region. Six reflection boundaries and five seismic sequences (SU1-SU5) were distinguished by the abrupt changes in reflection termination patterns, continuity, amplitude variations, and stratal geometry. The stratigraphic record reveals a systematic migration from progradational deltaic facies to transgressive tidal ridges, reflecting a regressive-to-transgressive succession. This evolution is characterized by a complete regressive-transgressive cycle, initiating with forced regression (SU5–SU4) driven by high sediment influx, followed by transgression (SU3–SU1) marked by tidal reworking of antecedent deltaic sands. Such stratigraphic architecture directly controls the distribution of high-quality sandy facies: delta-front sands and tidal-ridge complexes, serving as primary targets for resource exploration. Sequence stratigraphy is shaped by sea-level changes, sediment supply, and hydrodynamics, where SU4 represents the sediment-rich phase while SU2 marks the main sand-ridge construction period. These findings establish a predictive model for marine sand resource exploration by integrating stratigraphic architecture analysis with paleoenvironmental reconstructions to reduce assessment uncertainties.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"89 ","pages":"Article 104327"},"PeriodicalIF":2.1,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144581129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Role of antibiotic residues in development of antibiotic resistance in coastal bacterial communities 抗生素残留在沿海细菌群落抗生素耐药性发展中的作用

IF 2.1 4区环境科学与生态学

Regional Studies in Marine Science Pub Date : 2025-07-09 DOI: 10.1016/j.rsma.2025.104340

Maheshawari Behere , Pooja Thathola , Tarini Prasad Sahoo , Ishan Raval , Soumya Haldar

{"title":"Role of antibiotic residues in development of antibiotic resistance in coastal bacterial communities","authors":"Maheshawari Behere , Pooja Thathola , Tarini Prasad Sahoo , Ishan Raval , Soumya Haldar","doi":"10.1016/j.rsma.2025.104340","DOIUrl":"10.1016/j.rsma.2025.104340","url":null,"abstract":"<div><div>Antibiotics are becoming pollutants in water bodies due to inadequate wastewater treatment, inappropriate dumping, and runoff from agriculture and other pathways. The growth of bacteria resistant to antibiotics are promoted through contamination, endangering both human health and marine aquatic life. Antibiotic resistance in water sources has emerged as a significant environmental and public health concern. Antibiotic-resistant bacteria use the aquatic environment as a reservoir, which contributes significantly to the spread of antibiotic resistance due to its ability to collect, amplify, and disseminate resistant bacteria. The Gulf of Khambhat, located in the western part of India, a vital marine ecosystem, faces increasing antibiotic contamination from industrial discharges, agricultural runoff, and aquaculture effluents. This study aims to examine the presence of antibiotic residues and their impact on bacterial resistance in marine waters. Using LC-MS, six antibiotics (Ampicillin, Cefadroxil, Ceftazidime, Nitrofurantoin, Norfloxacin, and Penicillin G) were detected across multiple sites. Bacterial resistance profiling, conducted via the disc diffusion method and the ABCD kit, revealed widespread multidrug resistance, even in areas with undetectable residues, suggesting horizontal gene transfer and co-selection with pollutants. Statistical analysis linked antibiotic resistance with elevated biological oxygen demand (BOD), nitrate levels, and total dissolved solids (TDS), indicating pollution-driven selection pressures. Given the Gulf’s ecological and economic significance, these findings highlight the urgent need for stricter wastewater management and pollution control to curb the spread of antibiotic-resistant bacteria in marine environments.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"89 ","pages":"Article 104340"},"PeriodicalIF":2.1,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144604662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Identification of risk factors and pathways of mangrove carbon sink projects: From perspective of supply 红树林碳汇项目风险因素及路径识别——基于供给视角

IF 2.1 4区环境科学与生态学

Regional Studies in Marine Science Pub Date : 2025-07-09 DOI: 10.1016/j.rsma.2025.104345

Yixiong He , Yanwei Wang , Sumei Xie

{"title":"Identification of risk factors and pathways of mangrove carbon sink projects: From perspective of supply","authors":"Yixiong He , Yanwei Wang , Sumei Xie","doi":"10.1016/j.rsma.2025.104345","DOIUrl":"10.1016/j.rsma.2025.104345","url":null,"abstract":"<div><div>Mangrove carbon sink is a strategic way to solve the problem of climate change, and developing it into a project is an important carrier to realize its value, but the risks in the project development process will affect the utilization of mangrove carbon sinks. From the perspective of the supply entities, this article divided the entire life cycle of mangrove carbon sink projects into five stages: decision stage, design stage, construction stage, verification and filing stage, and operation and maintenance stage. With the goal of achieving project success, structural equation model was hereby established, and the impact paths and coefficients of 61 risk factors in the entire life cycle of mangrove carbon sink projects were obtained, and the key risk factors and their stages were clarified accordingly. The research results indicate that: (1) different life cycle stages exhibit different risk impact paths and coefficients, with the design stage and the operation and maintenance stage bearing the greatest impact of risk in the project; (2) for mangrove carbon sink projects, policy risks, technical risks, and market risks are the three major types of risks that require special attention; (3) about 1/4 of all risk factors belong to the category of first level risk. These research results can provide a theoretical basis for the effective implementation of risk management plans for mangrove carbon sink projects, so as to ensure greater project effectiveness, promote the development of mangrove carbon sink projects, and ultimately contribute to the realization of the goal of carbon neutrality.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"89 ","pages":"Article 104345"},"PeriodicalIF":2.1,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144604769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Applying artificial intelligence to predict the fishing performance of stow net constructed with noctilucent sticks 应用人工智能预测夜光棒筑网的渔捞性能

IF 2.1 4区环境科学与生态学

Regional Studies in Marine Science Pub Date : 2025-07-09 DOI: 10.1016/j.rsma.2025.104333

Wei Liu , Minghua Min , Zhongqiu Wang , Lei Wang , Yongli Liu , Guangrui Qi , Xun Zhang , Lumin Wang

{"title":"Applying artificial intelligence to predict the fishing performance of stow net constructed with noctilucent sticks","authors":"Wei Liu , Minghua Min , Zhongqiu Wang , Lei Wang , Yongli Liu , Guangrui Qi , Xun Zhang , Lumin Wang","doi":"10.1016/j.rsma.2025.104333","DOIUrl":"10.1016/j.rsma.2025.104333","url":null,"abstract":"<div><div>The application of artificial light to attract marine organisms was demonstrated to enhance fishing gear efficiency. This study presented a novel stow net design incorporating noctilucent sticks to optimize catch performance. Specifically, the research examined the impact of different colores of noctilucent sticks on the efficiency of catch in stow nets. The results revealed the use of noctilucent sticks could significantly increase the catch weight of stow nets (p < 0.01). Notably, the color of the noctilucent sticks influenced their effectiveness, with olive green sticks increasing catch weight by 40.65 %, followed by azure sticks (12.57 %) and bluish green sticks (8.88 %). The predominant species caught was the small yellow croaker, whose catch proportion rose from 19.18 % to 22.80 % due to the noctilucent sticks. In addition, a comprehensive analysis was conducted using the generalized additive model (GAM) to assess the impact of noctilucent sticks, lunar phases, and tidal cycles on stow net catch weights, complemented by a backpropagation (BP) neural network for predictive modeling of catch weights. It was confirmed that lunar phase, tidal cycle, and noctilucent stick presence significantly affected stow net catches. While the BP neural network predictions closely matched the measured data, with the accuracy exceeding 89.63 % and 91.72 %. This study provided theoretical guidance for stow net fishing practices in the Yellow Sea.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"89 ","pages":"Article 104333"},"PeriodicalIF":2.1,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144587868","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Control factors and contamination assessment of organic matter in Korean coastal sediments 韩国沿海沉积物有机质污染控制因素及污染评价

IF 2.1 4区环境科学与生态学

Regional Studies in Marine Science Pub Date : 2025-07-09 DOI: 10.1016/j.rsma.2025.104343

Junsik Woo , Teaha Kim , Hyojin Lee , Mansik Choi

{"title":"Control factors and contamination assessment of organic matter in Korean coastal sediments","authors":"Junsik Woo , Teaha Kim , Hyojin Lee , Mansik Choi","doi":"10.1016/j.rsma.2025.104343","DOIUrl":"10.1016/j.rsma.2025.104343","url":null,"abstract":"<div><div>Using data from the Korea National Marine Ecosystem Monitoring Program (2017–2022), this study investigates the spatiotemporal distribution of organic matter across five ecoregions designated by the Marine Environment Management Act. Three analytical approaches were applied to identify key factors influencing organic matter distribution: (1) correlation with sediment particle surface area and clay content, (2) characterization of organic matter sources, and (3) evaluation of sedimentary productivity. Background concentrations were established for each ecoregion, reflecting their unique sedimentary characteristics. Based on these baselines, contamination trends were found to be decreasing in the Central West Sea and Western South Sea, while increasing in the East Sea, Korea Strait, and Jeju Sea. Despite certain methodological limitations in defining background concentrations and contamination thresholds, this study provides valuable insights into the drivers of organic matter contamination and offers essential baseline data for future environmental assessments and coastal management strategies.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"89 ","pages":"Article 104343"},"PeriodicalIF":2.1,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144653737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thresholds of visible light detection in hawksbill turtle (Eretmochelys imbricata) hatchlings 玳瑁幼龟可见光探测阈值的研究

IF 2.1 4区环境科学与生态学

Regional Studies in Marine Science Pub Date : 2025-07-08 DOI: 10.1016/j.rsma.2025.104337

Robert T. Gammariello , Stephen G. Dunbar

{"title":"Thresholds of visible light detection in hawksbill turtle (Eretmochelys imbricata) hatchlings","authors":"Robert T. Gammariello , Stephen G. Dunbar","doi":"10.1016/j.rsma.2025.104337","DOIUrl":"10.1016/j.rsma.2025.104337","url":null,"abstract":"<div><div>Light is the primary environmental cue that hatchling sea turtles use to find the ocean post-emergence from the nest. The process of seafinding is interrupted by any form of light stronger than natural, ambient light. Three of the seven species of sea turtles have been investigated to determine their thresholds of detection for various wavelengths of light across the visible spectrum to help reduce hatchling misorientation. Hawksbill turtles, however, have not yet been investigated, and their general preference for nesting under vegetation, rather than on open sand, justifies the hypothesis that their vision may be more sensitive to lower light intensities than other species. Using a Y-maze choice experiment, we discerned the detection threshold for hawksbill hatchlings for visible light of 415, 470, 535, 555, 590, 601, and 660 nm. Hawksbills were most sensitive to light of 555 nm, least sensitive to light of 660 nm, and exhibited detection thresholds that are intermediate compared to previously studied species of sea turtles. Our results may be critical for informing changes in beachfront lighting, as we illustrate that even at very low intensities, light across the visible spectrum may still attract and misorient hawksbill hatchlings.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"89 ","pages":"Article 104337"},"PeriodicalIF":2.1,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144604661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Water-sediment regulation drives multi-taxon biodiversity and ecological network dynamics in the Yellow River Estuary 水沙调节驱动黄河口多类群生物多样性和生态网络动态

IF 2.1 4区环境科学与生态学

Regional Studies in Marine Science Pub Date : 2025-07-07 DOI: 10.1016/j.rsma.2025.104336

Cheng-Rui Yan , Li-Sha Hu , Xiao-Min Zhang , Shao-Wen Li , Fan Li , Yun-Wei Dong

{"title":"Water-sediment regulation drives multi-taxon biodiversity and ecological network dynamics in the Yellow River Estuary","authors":"Cheng-Rui Yan , Li-Sha Hu , Xiao-Min Zhang , Shao-Wen Li , Fan Li , Yun-Wei Dong","doi":"10.1016/j.rsma.2025.104336","DOIUrl":"10.1016/j.rsma.2025.104336","url":null,"abstract":"<div><div>The Yellow River's high sediment load requires the Water-Sediment Regulation Scheme (WSRS) to manage sediment and water flow, leading to significant environmental changes and changes in biodiversity in the Yellow River Estuary (YRE). The present study used an environmental DNA approach to assess changes in biodiversity and community structure of invertebrates and fish in the YRE during WSRS. A total of 301 invertebrate species were identified using COI, and invertebrate communities remained stable from July to August 2022. Fish diversity declined significantly, with 14 detected species. Community stability analysis based COI revealed increased average degree and strong connections in invertebrates but reduced modularity in August, while the co-occurrence networks shifted from multiple modules (July) to a single dominant structure (August). Dominant species <em>S. crassa</em> abundance significantly declined from 24 % in July to 7 % in August (<em>p</em> < 0.05), but functioned as a bridging species in the invertebrate taxa. Redundancy analysis revealed significant shifts in invertebrate taxa between July and August (<em>p</em> = 0.001), driven by temperature, pH, dissolved oxygen, nitrate nitrogen, and ammonia nitrogen. Fish species were mainly influenced by suspended solids and phosphate. The results show that environmental factors have varying effects on different biological taxa in YRE. This study helps to better understand the impact of water-sediment regulation on the ecological structure and provides new insights for future ecological management in the YRE.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"89 ","pages":"Article 104336"},"PeriodicalIF":2.1,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144581128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0