Regional Studies in Marine Science最新文献

First report on the distribution of Acantharia (Radiolaria) in Korean coastal waters: Comparison with their distribution in the northwestern Pacific 韩国近海棘虫属（放射菌属）分布的首次报道：与西北太平洋分布的比较

IF 2.4 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2026-02-01 DOI: 10.1016/j.rsma.2026.104794

Young-Ok Kim , Jungmin Choi , Noritoshi Suzuki , Intae Kim , Jimin Lee

Acantharia, a major group of microzooplankton inhabiting warm open-ocean waters, have not previously been studied in Korean coastal regions, despite these areas being frequently influenced by warm-water intrusions from the East China Sea and the Kuroshio Current. This study investigated the distribution of Acantharia in southern Korean coastal waters through a summer field survey and compared their local distribution with that observed at an open-ocean site in the Kuroshio region. At the coastal site, the highest acantharian abundance (33 cells L⁻¹) observed in surface waters. Large acantharian cells, with endoplasm diameter exceeding 50 μm, were concentrated in the upper water layer, coinciding with abrupt increases in temperature and decreases in salinity. In contrast, smaller acantharian cells with endoplasm diameters below 20 μm were sparsely distributed throughout the water column at the open-ocean site. At both sites, peaks in acantharian abundance did not coincide vertically with layers of high chlorophyll concentration. Satellite-derived chlorophyll maps indicate that the dense occurrence of acantharian cells in the Korean coastal waters may be associated with an immigration-driven hotspot along the eastern boundary of the Changjiang diluted water plume. Further studies across the waters surrounding the Korea Peninsula are required to better understand the distribution patterns and ecological roles of Acantharia in this region.

刺虫是一种主要的生活在温暖的开放海域的微型浮游动物，尽管这些地区经常受到来自东中国海和黑潮的温水入侵的影响，但以前没有在韩国沿海地区进行过研究。本研究通过夏季野外调查调查了刺虫在韩国南部沿海水域的分布，并将其局部分布与在黑潮地区一个开阔海域观察到的分布进行了比较。在沿海地区，地表水的棘虫丰度最高（33个细胞L−1）。内质直径超过50 μm的棘层细胞主要集中在上层水层，温度急剧升高，盐度急剧下降。相比之下，在开放海域，内质直径小于20 μm的棘虫细胞在整个水柱中稀疏分布。在这两个地点，棘虫丰度的高峰在垂直方向上与高叶绿素浓度层不重合。卫星衍生的叶绿素图谱显示，朝鲜沿海海域棘细胞的密集分布可能与沿长江稀释水羽东部边界的移民驱动热点有关。为了更好地了解棘虫在该地区的分布格局和生态作用，需要进一步研究朝鲜半岛周围水域。

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引用次数: 0

Brazil’s role in the illegal sea cucumber trade: A synthesis of historical accounts, literature, reports, and seizure records 巴西在非法海参贸易中的作用：历史记载、文献、报告和缉获记录的综合

IF 2.4 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2026-02-01 DOI: 10.1016/j.rsma.2026.104802

Luciana Ribeiro Martins , Yara Aparecida Garcia Tavares , Yara Nantes Vasconcelos , Francisco José Reyes Sánchez , Pablo Damian Borges Guilherme , Guilherme Rupp , Camilla Souto

The global exploitation of sea cucumbers spans roughly 90 countries and involves 84 species. Here, we provide a historical overview and current assessment of Brazil’s illegal sea cucumber trade by integrating lexicometric analysis with media reports, unpublished field observations, and specimens seized by the national compliance authorities. We also review literature with population-level data for two key species—Holothuria (Halodeima) grisea and Isostichopus badionotus—and evaluate the role of Brazilian legislation and taxonomic resolution in their conservation. Sea cucumber fisheries in Brazil were first documented in the early 20th century, with the first illegal apprehension recorded in the early 2000s. Holothuria (Halodeima) grisea and I. badionotus have been harvested without regulation throughout the coast. While the biology of H. (Halodeima) grisea is relatively well known in southern Brazil, local knowledge of this species in northern Brazil, as well as that of I. badionotus, is scarce, hindering effective management. Both local and foreign harvesters process specimens on-site before export, primarily to Hong Kong, with some shipments to Europe. Nearly 40 % of confiscated individuals were juveniles, indicating both reduced market value and intense harvesting pressure. Although the full extent of exploitation remains unclear, overharvesting has already driven stock declines in Ceará State. The combination of limited research capacity and regulatory gaps makes both the conservation and sustainable use of Brazilian sea cucumbers especially challenging, underscoring the urgent need for baseline biological data and the development of effective management strategies.

全球大约有90个国家捕捞海参，涉及84种海参。在这里，我们将词汇计量学分析与媒体报道、未发表的实地观察和国家合规当局缴获的标本相结合，提供巴西非法海参贸易的历史概述和当前评估。我们还回顾了两个关键物种- holothuria (Halodeima) grisea和Isostichopus badionotus -的种群水平数据，并评估了巴西立法和分类学决议在其保护中的作用。巴西的海参渔业最早记录于20世纪初，第一次非法捕捞记录是在21世纪初。Holothuria (Halodeima) grisea和I. badionotus在整个海岸都没有受到监管。虽然巴西南部对稻瘟病人（Halodeima）的生物学了解相对较多，但巴西北部对稻瘟病人（I. badionotus）的当地知识却很少，这阻碍了有效的管理。本地和国外的采集者在出口前都会对标本进行现场处理，主要出口到香港，部分出口到欧洲。近40% %的被没收的个体是幼鱼，这表明市场价值下降和收获压力大。尽管目前尚不清楚捕捞的全面程度，但过度捕捞已经导致该州的鱼类数量下降。有限的研究能力和管理空白使巴西海参的保护和可持续利用特别具有挑战性，突出表明迫切需要基线生物数据和制定有效的管理战略。

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引用次数: 0

Safeguarding coastal health: Marine pollution as a catalyst of food insecurity and ecological risk in Island nations 保护沿海健康：海洋污染是岛屿国家粮食不安全和生态风险的催化剂

IF 2.4 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2026-02-01 DOI: 10.1016/j.rsma.2026.104758

Qunyu Chen , Dale Stain

Marine pollution threatens food security and ecological integrity in China’s coastal and near-shore regions(CCNR), yet quantitative evidence linking pollutant pathways to health outcomes remains limited. This study presents original empirical analysis of marine pollution impacts across major Chinese coastal provinces (Shandong, Jiangsu, Zhejiang, Fujian, Guangdong, and Hainan) using a One Health framework. We conducted systematic data collection between 2022 and 2024, including: (i) seafood contaminant measurements (n = 847 samples; heavy metals via ICP-MS, microplastics via FTIR spectroscopy) from artisanal fishing sites and aquaculture facilities; (ii) 312 structured household surveys measuring food security indicators; (iii) spatial analysis of pollution entry points using satellite imagery and port authority records; and (iv) comparative policy assessment across all six nations using semi-structured interviews with 48 government officials and environmental managers.Results demonstrate that microplastics (detected in 73 % of samples, mean 4.2 particles/g) and heavy metals (lead: 0.34 mg/kg; mercury: 0.18 mg/kg; both exceeding WHO limits in hotspot areas) constitute primary contamination vectors, with significant inter-island variation (p < 0.001). Port proximity emerged as the strongest predictor of contamination (OR=3.8, 95 % CI: 2.1–6.9), followed by inadequate wastewater infrastructure (OR=2.4). Food-borne disease incidence correlates positively with contamination levels (r = 0.67, p < 0.01), with aquaculture and artisanal fisheries jointly explaining 64 % of community-level exposure variance. Integrated multi-trophic aquaculture (IMTA) systems achieved 45–67 % nutrient load reductions while maintaining 89 % of baseline yields. Gear-marking initiatives reduced abandoned fishing gear by 52 % across pilot sites. Veterinary-monitored AMR surveillance in aquaculture reduced antibiotic resistance prevalence by 38 % over 18 months.Cost-effectiveness analysis reveals that bundled interventions—combining wastewater upgrades (USD 2.3 M per island), IMTA conversion pilots (USD 450 K), gear-marking programs (USD 120 K), and AMR surveillance systems (USD 85 K annually)—offer economically viable pathways to simultaneously improve food safety, protect coastal ecosystems, and enhance community resilience in China's coastel and near-shore regions contexts.

海洋污染威胁着中国沿海和近岸地区（CCNR）的粮食安全和生态完整性，但将污染物途径与健康结果联系起来的定量证据仍然有限。本研究采用“一个健康”框架对中国主要沿海省份（山东、江苏、浙江、福建、广东和海南）的海洋污染影响进行了初步实证分析。我们在2022年至2024年期间进行了系统的数据收集，包括：(i)对来自手工渔场和水产养殖设施的海产品污染物进行测量（n = 847个样本；ICP-MS检测重金属，FTIR光谱检测微塑料）；测量粮食安全指标的312项结构住户调查；（iii）利用卫星图像和港务局记录对污染进入点进行空间分析；（iv）通过对48名政府官员和环境管理者的半结构化访谈，对所有六个国家的政策进行比较评估。结果表明，微塑料（在73% %的样品中检测到，平均4.2个颗粒/g）和重金属（铅：0.34 mg/kg；汞：0.18 mg/kg；均超过热点地区的世卫组织限制）是主要的污染载体，岛屿间差异显著（p <； 0.001）。港口邻近是污染的最强预测因子（OR=3.8, 95 % CI: 2.1-6.9），其次是污水处理基础设施不足（OR=2.4）。食源性疾病发病率与污染水平呈正相关（r = 0.67,p <； 0.01），水产养殖和手工渔业共同解释了社区水平暴露方差的64 %。综合多营养水产养殖（IMTA）系统实现了45-67 %的营养负荷减少，同时保持了89 %的基线产量。渔具标记计划使试验点的废弃渔具减少了52% %。兽医监测的水产养殖业抗菌素耐药性监测在18个月内将抗生素耐药性流行率降低了38% %。成本效益分析表明，在中国沿海和近岸地区，将污水升级（每个岛屿2.3 万美元）、IMTA转换试点（450 万美元）、装备标记项目（120 万美元）和抗菌素耐药性监测系统（每年85 万美元）结合起来的一揽子干预措施，为同时改善食品安全、保护沿海生态系统和增强社区抵御能力提供了经济上可行的途径。

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引用次数: 0

Exploring the role of seaweeds in environmental pollution mitigation for clean water: Mechanisms of adsorption and desorption 探讨海藻在清洁水环境污染缓解中的作用：吸附和解吸机制

IF 2.4 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2026-02-01 DOI: 10.1016/j.rsma.2026.104811

P. Thamarai, A. Saravanan, P.R. Yaashikaa

The rapid expansion of global industrialization and population growth has intensified water contamination, making it essential to explore sustainable remediation strategies. Among various natural biosorbents, seaweeds have emerged as promising candidates for pollutant removal due to their unique biochemical composition and high biosorption efficiency. Naturally occurring seaweeds play an essential role in maintaining ecological balance by passively accumulating heavy metals and organic pollutants, whereas cultivated seaweeds can be optimized for targeted clean water restoration and wastewater treatment applications. Their abundant availability, eco-friendliness, and cost-effectiveness further enhance their applicability in large-scale water treatment. This review examines the occurrence of major toxic pollutants in water bodies and their environmental consequences while critically evaluating the potential of seaweed-based bioremediation. The specific mechanisms of removal include ion exchange and complexation with carboxyl, hydroxyl, and sulfate groups for heavy metals; electrostatic attraction and π–π interactions for synthetic dyes; hydrogen bonding and hydrophobic interactions for phenolic compounds; and adsorption through van der Waals forces and surface complexation for pharmaceutical residues. Additionally, factors influencing biosorption efficiency, including biosorbent dosage, initial pollutant concentration, pH, and temperature, are analyzed. Findings from this study indicate that seaweed biomass demonstrates significant adsorption capacities across pollutant classes, with desorption and regeneration studies confirming its reusability. However, challenges such as large-scale implementation, regeneration efficiency, and cost-effectiveness remain critical hurdles. The review highlights the necessity for interdisciplinary approaches to optimize seaweed-based remediation, including process modifications, composite development, and hybrid treatment systems. Overall, seaweed-based remediation represents a sustainable and practical solution for mitigating water pollution and advancing eco-friendly wastewater treatment.

全球工业化的快速发展和人口的快速增长加剧了水污染，因此探索可持续的修复策略至关重要。在各种天然生物吸附剂中，海藻因其独特的生化成分和较高的生物吸附效率而成为去除污染物的有前途的候选者。自然生长的海藻通过被动积累重金属和有机污染物在维持生态平衡中发挥重要作用，而人工养殖的海藻可以在有针对性的清洁水恢复和废水处理应用中得到优化。其丰富的可用性、生态友好性和成本效益进一步增强了其在大规模水处理中的适用性。本文综述了水体中主要有毒污染物的发生及其环境后果，同时批判性地评估了海藻生物修复的潜力。去除重金属的具体机制包括离子交换和与羧基、羟基和硫酸盐基的络合作用；合成染料的静电吸引和π -π相互作用酚类化合物的氢键和疏水相互作用；以及通过范德华力和表面络合对药物残留物的吸附。此外，还分析了生物吸附剂用量、初始污染物浓度、pH和温度等因素对生物吸附效率的影响。本研究结果表明，海藻生物量对各类污染物具有显著的吸附能力，解吸和再生研究证实了其可重复使用性。然而，诸如大规模实施、再生效率和成本效益等挑战仍然是关键障碍。该综述强调了跨学科方法优化海藻修复的必要性，包括工艺修改、复合开发和混合处理系统。总的来说，以海藻为基础的修复是缓解水污染和推进生态友好型废水处理的可持续和实用的解决方案。

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引用次数: 0

Assessment of community structure and spatio-temporal dynamic of mangrove vegetation in East Java Province, Indonesia using multi-decadal satellite remote sensing 基于多年代际卫星遥感的印尼东爪哇省红树林植被群落结构及时空动态评价

IF 2.4 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2026-02-01 DOI: 10.1016/j.rsma.2026.104788

Zainul Hidayah , Herlambang Aulia Rachman , Abd Rahman As-Syakur , Dwi Budi Wiyanto

The mangrove ecosystem in Indonesia has experienced substantial degradation over the past two decades. Development of agricultural land, fish ponds for aquaculture, settlements, and illegal deforestation are examples of anthropogenic-driven factors that can damage mangrove ecosystems. The advancement of cloud computing-based platforms that support high-performance geospatial data processing is very useful to the study of environmental changes, particularly in mangrove areas. This study focuses on measuring long-term spatio-temporal changes in four mangrove ecosystem hotspots in East Java, namely the mangrove forest of Ujung Pangkah, the Surabaya East Coast, Alas Purwo National Park, and Pang Pang Bay. This study aims to determine the dynamics of multi-temporal mangrove area coverage in East Java Province and to investigate the driving factors causing changes in mangrove forest areas in those locations. Using multi-temporal Landsat imagery data from 1995 to 2022 and processed in Google Earth Engine (GEE), the study employed supervised classification using the Random Forest algorithm to mapping mangrove areas and analyze their changes. Field data were collected to validate remote sensing results and assess mangrove species composition and structural diversity. This study reveals an increase of approximately 2837.17 ha in the total mangrove forest area across four main sites in East Java, based on nearly three decades of Landsat satellite images analysis. Moreover, the overall accuracy (OA) of mangrove classification in this study reached > 80 % with a Kappa coefficient > 0.75.The most significant increase in mangrove forest area occurred in Ujung Pangkah with an increase of more than 1600 ha. The increased mangrove forest area was also accompanied by an increase in vegetation density. This trend is indicated by the average NDVI increasing from approximately 0.32–0.63 at the end of the observation period. The combination of sedimentation, conservation status, and the role of local communities in mangrove rehabilitation programs are the main driving factors that determine the improvement of mangrove forest conditions in East Java.

在过去的二十年中，印度尼西亚的红树林生态系统经历了严重的退化。农业用地的开发、用于水产养殖的鱼塘、定居点和非法砍伐森林都是可能破坏红树林生态系统的人为驱动因素。支持高性能地理空间数据处理的基于云计算的平台的进步对研究环境变化，特别是红树林地区的环境变化非常有用。本研究主要测量了东爪哇4个红树林生态系统热点地区的长期时空变化，即乌荣邦加红树林、泗水东海岸红树林、阿拉普沃国家公园红树林和庞庞湾红树林。本研究旨在确定东爪哇省红树林面积覆盖的多时间动态，并探讨导致这些地点红树林面积变化的驱动因素。利用谷歌Earth Engine （GEE）处理的1995 - 2022年的多时相Landsat影像数据，采用随机森林（Random Forest）算法进行监督分类，对红树林区域进行制图并分析其变化。收集现场数据，验证遥感结果，评估红树林物种组成和结构多样性。根据近30年的Landsat卫星图像分析，本研究显示，东爪哇四个主要地点的红树林总面积增加了约2837.17 ha。此外，本研究红树林分类的总体准确率（OA）达到>； 80 %，Kappa系数>； 0.75。红树林面积增加最显著的是Ujung Pangkah，增加了1600 公顷以上。红树林面积的增加也伴随着植被密度的增加。在观察期结束时，平均NDVI从0.32 ~ 0.63增加，表明了这一趋势。沉积、保护状况和当地社区在红树林恢复计划中的作用是决定东爪哇红树林状况改善的主要驱动因素。

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引用次数: 0

Integrated CMS-PTM modelling of tidally and wave-driven hydrodynamics and particle transport at the kitchener drain estuary, Egypt 综合CMS-PTM模型潮汐和波浪驱动的流体动力学和粒子输运在厨房排水河口，埃及

IF 2.4 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2026-02-01 DOI: 10.1016/j.rsma.2026.104807

Nada Mansour , Tharwat Sarhan , Mahmoud El-Gamal , Karim Nassar

Anticipating the final destination of sediments and other water-borne particles is a crucial aspect of coastal engineering and dredged material management. Pollutant movement, sensitive habitats, endangered species, rehabilitation, and beneficial use activities can all be evaluated with the use of these forecasts when dredging and placement projects are underway. To study a prospective candidate site for the near shore deployment of dredged material, the Particle Tracking Model (PTM), a Lagrangian particle tracker, simulates the movement of different sediment types in a flow field related to the output of Coastal Modelling System (CMS). Many coastal and river applications employ the (PTM) model to estimate the eventual position of debris discharged during dredging and placement activities. The principal application of the PTM model in this study is to estimate the movement and deposition of sediments in the Kitchener Drain Estuary. Although this study primarily investigates general sediment transport, the model’s capability extends to analysing contaminated sediment deposits, which is crucial for future dredging and restoration projects. In order to evaluate existing and prospective dredging methods, the (PTM) integrates powerful visualisation tools with precise and efficient transportation computations. The coupled hydrodynamic numerical model CMS-PTM is integrated into the Surface-water Modelling System (SMS) Version 11.1, and it uses algorithms that accurately represent the transportation, sedimentation, mixing, and suspension processes in near shore wave conditions.

预测沉积物和其他水生颗粒的最终目的地是海岸工程和疏浚材料管理的一个重要方面。在进行疏浚和安置工程时，可使用这些预测来评估污染物的移动、敏感生境、濒危物种、修复和有益的利用活动。为了研究近岸疏浚材料部署的潜在候选地点，拉格朗日粒子跟踪模型（PTM）模拟了与海岸模拟系统（CMS）输出相关的流场中不同沉积物类型的运动。许多沿海和河流应用使用（PTM）模型来估计在疏浚和放置活动中排放的碎片的最终位置。PTM模型在本研究中的主要应用是估计基奇纳排水沟口沉积物的运动和沉积。虽然这项研究主要研究一般的沉积物运输，但该模型的能力扩展到分析受污染的沉积物，这对未来的疏浚和恢复项目至关重要。为了评估现有和未来的疏浚方法，（PTM）集成了强大的可视化工具和精确高效的运输计算。耦合水动力数值模型CMS-PTM集成到地表水模拟系统（SMS） 11.1版本中，它使用的算法准确地表示近岸波浪条件下的运输，沉积，混合和悬浮过程。

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引用次数: 0

Metagenomic exploration of microbial diversity and their plastic degradation potential in deep sea sediments of Bay of Bengal 孟加拉湾深海沉积物微生物多样性及其塑料降解潜力的宏基因组研究

IF 2.4 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2026-02-01 DOI: 10.1016/j.rsma.2026.104795

Shilpa Sunny, Amit Kumar, S. Prakash

Metagenomic analysis of deep-sea sediments from the Bay of Bengal reveals largely unexplored microbial diversity and their functional capabilities, particularly in plastic degradation. Illumina-based shotgun metagenome sequencing of sediment collected at 1750 m in Krishna Godavari basin in the Bay of Bengal identified Bacillota as the predominant phylum, followed by Pseudomonadota, Actinomycetota, Myxococcota. We further identified 3 metagenome assisted genomes as Mesobacillus subterraneus, Cytobacillus oceanisediminis, and Fictibacillus arsenicus. A Search against the PlasticDB database identified 29 types of plastic degrading enzymes, linked to 27 different plastic polymers, including 14 natural and 13 synthetic polymers. The highest number of plastic degrading enzymes - associated hits were involved in the degradation of polyacetic acid, followed by polyhydroxyalkanoates, polyethylene glycol, and others. Functional annotation of the complete metagenome assembly revealed 6 classes of antibiotic drugs and 61 Biosynthetic Gene Clusters alongside metabolic pathways essential for biodegradation, and biogeochemical cycles including carbon, sulfur and nitrogen cycle. This study underscores that Bay of Bengal deep sea sediments as a highly dynamic environmental niche for further exploration.

对孟加拉湾深海沉积物的宏基因组分析揭示了大量未开发的微生物多样性及其功能，特别是在塑料降解方面。在孟加拉湾Krishna Godavari盆地1750 m采集的沉积物中，基于illumina的鸟枪基因组测序发现Bacillota是优势门，其次是Pseudomonadota，放线菌ta，粘球菌ta。我们进一步鉴定了3个宏基因组辅助基因组，分别是地下中杆菌、海洋细胞芽孢杆菌和砷芽孢杆菌。通过对PlasticDB数据库的搜索，发现了29种塑料降解酶，与27种不同的塑料聚合物有关，其中包括14种天然聚合物和13种合成聚合物。塑料降解酶中与聚乙酸相关的酶数量最多，其次是聚羟基烷酸酯、聚乙二醇和其他。全基因组的功能注释揭示了6类抗生素药物和61个生物合成基因簇，以及生物降解必需的代谢途径和包括碳、硫和氮循环在内的生物地球化学循环。本研究强调孟加拉湾深海沉积物是一个高度动态的环境生态位，值得进一步探索。

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引用次数: 0

Organophosphate triesters and diesters in surface waters and sediments of an urbanized river in Eastern China: Spatial patterns and ecological implications 中国东部城市化河流地表水和沉积物中有机磷三酯和二酯的空间格局及其生态意义

IF 2.4 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2026-01-28 DOI: 10.1016/j.rsma.2026.104819

Haibin Sun , Yuanren Liang , Qingwei Bu , Lei Yang , Jianfeng Tang , Yaoyang Xu

In aquatic ecosystems, tri-organophosphate esters and their di-metabolites are commonly found and may present significant ecological risks. Nonetheless, there is still a scarcity of data regarding the contamination characteristics and how OPEs and their metabolites partition at the interface between sediment and water. This research aimed to examine the spatial variation, interface exchange, and diffusion processes of 13 tri-OPEs and 5 di-OPEs within the surface water and sediment of the Yong River, which is situated in heavily urbanized regions of eastern China. The concentration levels of tri-OPEs in the aquatic environment ranged from 428.84 to 4024.01 ng/L, whereas concentrations of di-OPEs spanned from 92.6 to 440.39 ng/L. The most prevalent category of contaminants identified were Chlorinated OPEs. In the sediment, the concentration levels varied from 0.16 to 2400.5 ng/g (dw), with tributyl phosphate (TnBP) being the primary constituent. Fugacity fraction analysis indicates that most OPEs, including TMP, TEP, and TCEP, are likely to migrate into the water phase. Others, such as TiBP, TBEP, TCIPP, and TPHP, tend to maintain equilibrium at the sediment-water interface. The composition of the compound in terms of carbon atom count and the level of soot carbon present in the sediment significantly influence the dispersal patterns of OPEs. The analysis of potential sources revealed that the main contributors to tri-OPEs stemmed from discharges linked to wastewater treatment facilities and various industrial processes. Conversely, di-OPEs emerged primarily from industrial manufacturing and the breakdown of tri-OPEs. The analysis of ecological risks across multiple levels indicated that tris(1,3-dichloro-2-propyl) phosphate (TDCP) represents a minimal threat to aquatic ecosystems. These results can provide insights into the dynamics of OPE and their metabolites within urban river water ecosystems that experience significant human influence.

在水生生态系统中，三有机磷酸酯及其二代谢物普遍存在，并可能带来重大的生态风险。尽管如此，关于污染特征以及OPEs及其代谢物如何在沉积物和水之间的界面上分配的数据仍然缺乏。研究了位于中国东部高度城市化地区的永河地表水和沉积物中13种三组分和5种二组分的空间变化、界面交换和扩散过程。水体环境中三opes的浓度范围为428.84 ~ 4024.01 ng/L，二opes的浓度范围为92.6 ~ 440.39 ng/L。所确定的最普遍的污染物类别是氯化环氧乙烷。在沉积物中，浓度水平在0.16 ~ 2400.5 ng/g （dw）之间变化，以磷酸三丁酯（TnBP）为主要成分。逸度分数分析表明，大多数OPEs（包括TMP、TEP和TCEP）都可能迁移到水相。其他的，如TiBP， TBEP， TCIPP和TPHP，倾向于在沉积物-水界面保持平衡。化合物的碳原子数组成和沉积物中烟灰碳的含量显著影响OPEs的扩散模式。对潜在来源的分析显示，三种有机磷的主要来源是与废水处理设施和各种工业过程有关的排放。相反，二业务主要来自工业制造业和三业务的分解。多层面生态风险分析表明，三磷酸（1,3-二氯-2-丙基）对水生生态系统的威胁最小。这些结果可以深入了解城市河流生态系统中OPE及其代谢物的动态，这些生态系统受到人类的显著影响。

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引用次数: 0

Trace element accumulation in green turtles (Chelonia mydas) foraging in locations of differing chemical input 不同化学物质输入环境下绿海龟觅食过程中微量元素的积累

IF 2.4 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2026-01-28 DOI: 10.1016/j.rsma.2026.104817

Nicole B. Rowberry , Arthur D. Barraza , Colin J. Limpus , Jason P. van de Merwe , Kimberly A. Finlayson

Green sea turtles (Chelonia mydas) have high ecological, economic and cultural importance, and their high fidelity to foraging grounds and long lifespan make them good bioindicators of trace element pollution. Trace elements accumulate in green turtles through food, and are linked with disease and abnormalities. Previous studies suggest higher concentrations of trace elements within inshore locations, closer to anthropogenic activities and coastal run-off, compared to remote offshore sites. This project investigated trace element accumulation in blood of green turtles foraging in locations of differing chemical input. Blood was collected from green turtles foraging at three sites: Port Curtis (adjacent to industrial port), Heron Reef (adjacent to tourist resort and research station), and Hoskyn/Fairfax reefs (remote offshore reefs). The blood was acid digested and analysed using ICP-MS for trace element concentrations. Concentrations of individual elements were statistically analysed for differences between locations, and a principal components analysis was used to assess multivariate differences between locations. Trace element concentrations were also compared to reference intervals (RIs) from the literature. Antimony, cobalt, manganese, and molybdenum concentrations were significantly higher in Port Curtis turtles, and elevated above the reference intervals. Arsenic, selenium and cadmium were significantly higher in both offshore locations compared to Port Curtis, and elevated above reference intervals. Vanadium was significantly higher in Hoskyn/Fairfax turtles, and elevated above reference intervals. Principal component analyses found a distinct separation between Port Curtis and the Capricorn Bunker, as well as some separation between Heron and Hoskyn/Fairfax reefs. The higher concentrations of elements in turtle blood compared to the reference intervals, and other global populations, demonstrates natural and anthropogenic sources of elements are accumulating in these green turtles at elevated levels, with suspected risk to their health and the health of the marine environment.

绿海龟（Chelonia mydas）具有很高的生态、经济和文化价值，对觅食地的保真度高，寿命长，是良好的微量元素污染生物指标。微量元素通过食物在绿海龟体内积累，并与疾病和异常有关。先前的研究表明，与偏远的近海地点相比，靠近人类活动和沿海径流的近海地点的微量元素浓度更高。本项目研究了绿海龟在不同化学输入地点觅食时血液中微量元素的积累情况。在三个地点采集绿海龟的血液：柯蒂斯港（毗邻工业港）、鹭礁（毗邻旅游胜地和研究站）和霍斯金/费尔法克斯珊瑚礁（偏远的近海珊瑚礁）。血酸消化后用ICP-MS测定微量元素浓度。个别元素的浓度被统计分析不同地区之间的差异，并使用主成分分析来评估不同地区之间的多变量差异。微量元素浓度也与文献中的参考区间（RIs）进行了比较。在柯蒂斯港龟中，锑、钴、锰和钼的浓度显著高于参考区间。与柯蒂斯港相比，这两个近海地点的砷、硒和镉含量明显高于参考区间。在Hoskyn/Fairfax龟中，钒含量显著高于参考区间。主成分分析发现，柯蒂斯港和摩羯座地堡之间存在明显的分离，苍鹭礁和霍斯金/费尔法克斯礁之间也存在一定的分离。与参考区间和其他全球种群相比，海龟血液中的元素浓度较高，这表明这些绿海龟体内的自然和人为元素来源正在以较高的水平积累，可能对它们的健康和海洋环境的健康构成风险。

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引用次数: 0

Depth-dependent biochemical changes in Plesionika edwardsii: Inverse correlation between amino acids and astaxanthin edward Plesionika的深度依赖性生化变化：氨基酸与虾青素的负相关

IF 2.4 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2026-01-28 DOI: 10.1016/j.rsma.2026.104818

Hanife Aydan Yatmaz , Turhan Kebapcioglu , Pinar Yerlikaya

The amino acid profile of Plesionika edwardsii in relation to its astaxanthin content, was examined in shrimp captured from traps at varying depths (210, 350, 450, and 500 m), with an attempt to establish a correlation between the two factors. The effect of the presence of the egg has also been evaluated. Total essential amino acid (EAA) content increased with depth, regardless of egg presence, while total non-EAA content was positively influenced by both depth and egg presence. Lysine, arginine, and leucine were identified as the predominant EAAs, while glutamic acid and aspartic acid were the major non-EAAs at all depths. Notably, shrimp caught at 210 m with eggs exhibited lower amino acid content compared to those from deeper depths, particularly 450 and 500 m. The lightness and redness of shrimps decrease with increasing depth, while b* value remained consistent across all conditions. A clear trend of decreasing astaxanthin values was observed, with some statistically significant differences suggesting a possible effect of depth. There is more concentrated astaxanthin in shrimp caught at shallower depths and decreases as the depth increases. A significant negative correlation was observed between astaxanthin content and most amino acids, particularly methionine, valine, and alanine, with this trend more pronounced in shrimp with eggs. These findings indicate that astaxanthin and amino acids could experience functional variations depending on environmental conditions.

研究了从不同深度（210、350、450和500 m）捕获的虾中捕获的爱德华Plesionika edwardsii的氨基酸分布与其虾青素含量的关系，试图建立这两个因素之间的相关性。鸡蛋存在的影响也被评估过。总必需氨基酸（EAA）含量随深度的增加而增加，而总非EAA含量与深度和鸡蛋的存在均呈正相关。赖氨酸、精氨酸和亮氨酸是主要的eaa，而谷氨酸和天冬氨酸是所有深度的主要非eaa。值得注意的是，与深度更深的虾相比，在210 m捕获的虾的氨基酸含量较低，特别是450和500 m。虾的亮度和红度随深度的增加而降低，而b*值在所有条件下保持一致。观察到虾青素值有明显的下降趋势，有一些统计学上显著的差异表明深度可能有影响。虾青素在较浅深度捕获的虾中更集中，随着深度的增加而减少。虾青素含量与大多数氨基酸呈显著负相关，尤其是蛋氨酸、缬氨酸和丙氨酸，这种趋势在带卵虾中更为明显。这些发现表明虾青素和氨基酸可以根据环境条件经历功能变化。

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引用次数: 0